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{
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"Event" : {
"analysis" : "2" ,
"date" : "2019-12-23" ,
"extends_uuid" : "" ,
"info" : "OSINT - Reversing a real-world 249 bytes backdoor!" ,
"publish_timestamp" : "1577112250" ,
"published" : true ,
"threat_level_id" : "3" ,
"timestamp" : "1577112228" ,
"uuid" : "5e00d123-d688-417f-aafe-40fb02de0b81" ,
"Orgc" : {
"name" : "CIRCL" ,
"uuid" : "55f6ea5e-2c60-40e5-964f-47a8950d210f"
} ,
"Tag" : [
{
"colour" : "#004646" ,
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"local" : false ,
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"name" : "type:OSINT" ,
"relationship_type" : ""
} ,
{
"colour" : "#0071c3" ,
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"local" : false ,
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"name" : "osint:lifetime=\"perpetual\"" ,
"relationship_type" : ""
} ,
{
"colour" : "#0087e8" ,
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"local" : false ,
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"name" : "osint:certainty=\"50\"" ,
"relationship_type" : ""
} ,
{
"colour" : "#ffffff" ,
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"local" : false ,
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"name" : "tlp:white" ,
"relationship_type" : ""
} ,
{
"colour" : "#2c0037" ,
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"local" : false ,
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"name" : "ms-caro-malware:malware-type=\"Backdoor\"" ,
"relationship_type" : ""
}
] ,
"Attribute" : [
{
"category" : "External analysis" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"timestamp" : "1577112123" ,
"to_ids" : false ,
"type" : "link" ,
"uuid" : "5e00d23b-051c-4038-866e-4aaa02de0b81" ,
"value" : "https://anee.me/reversing-a-real-world-249-bytes-backdoor-aadd876c0a32?gi=af1848a0c8d6"
}
] ,
"Object" : [
{
"comment" : "Apparently it tries to make a socket and connect to the IP address: 104.248.237.194 on port number 1337. This ip address is owned by Digital Ocean." ,
"deleted" : false ,
"description" : "An IP address (or domain or hostname) and a port seen as a tuple (or as a triple) in a specific time frame." ,
"meta-category" : "network" ,
"name" : "ip-port" ,
"template_uuid" : "9f8cea74-16fe-4968-a2b4-026676949ac6" ,
"template_version" : "8" ,
"timestamp" : "1577111942" ,
"uuid" : "5e00d186-98c8-4333-8ce9-464802de0b81" ,
"Attribute" : [
{
"category" : "Network activity" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "ip" ,
"timestamp" : "1577111942" ,
"to_ids" : true ,
"type" : "ip-dst" ,
"uuid" : "5e00d186-906c-4b0f-90c6-4b2002de0b81" ,
"value" : "104.248.237.194"
} ,
{
"category" : "Network activity" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : true ,
"object_relation" : "dst-port" ,
"timestamp" : "1577111943" ,
"to_ids" : false ,
"type" : "port" ,
"uuid" : "5e00d187-21a0-4462-af53-411602de0b81" ,
"value" : "1337"
}
]
} ,
{
"comment" : "Epic! This 249 byte backdoor can run any shellcode we give it. The attackers can deploy it on an offshore IP address and execute arbitrary instructions on the victim\u00e2\u20ac\u2122s box." ,
"deleted" : false ,
"description" : "File object describing a file with meta-information" ,
"meta-category" : "file" ,
"name" : "file" ,
"template_uuid" : "688c46fb-5edb-40a3-8273-1af7923e2215" ,
"template_version" : "18" ,
"timestamp" : "1577112228" ,
"uuid" : "5e00d1ba-d438-4138-90ad-427802de0b81" ,
"ObjectReference" : [
{
"comment" : "" ,
"object_uuid" : "5e00d1ba-d438-4138-90ad-427802de0b81" ,
"referenced_uuid" : "5e00d186-98c8-4333-8ce9-464802de0b81" ,
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"relationship_type" : "connects-to" ,
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"timestamp" : "1577112019" ,
"uuid" : "5e00d1d4-c114-4a6e-af6e-401902de0b81"
} ,
{
"comment" : "" ,
"object_uuid" : "5e00d1ba-d438-4138-90ad-427802de0b81" ,
"referenced_uuid" : "5e00d259-cf84-4973-84be-41ac02de0b81" ,
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"relationship_type" : "related-to" ,
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"timestamp" : "1577112228" ,
"uuid" : "5e00d2a4-5050-4d46-8eb9-422c02de0b81"
}
] ,
"Attribute" : [
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "md5" ,
"timestamp" : "1577111994" ,
"to_ids" : true ,
"type" : "md5" ,
"uuid" : "5e00d1ba-00d8-454c-8dea-434e02de0b81" ,
"value" : "93363683dcf1ccc4db296fa5fde69b71"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "sha1" ,
"timestamp" : "1577111995" ,
"to_ids" : true ,
"type" : "sha1" ,
"uuid" : "5e00d1bb-a874-4883-aed0-478f02de0b81" ,
"value" : "0d4570ae80f9fca2d4b68a7f4b88dd0eb2df3573"
}
]
} ,
{
"comment" : "" ,
"deleted" : false ,
"description" : "File object describing a file with meta-information" ,
"meta-category" : "file" ,
"name" : "file" ,
"template_uuid" : "688c46fb-5edb-40a3-8273-1af7923e2215" ,
"template_version" : "17" ,
"timestamp" : "1577112202" ,
"uuid" : "565a1793-5fe6-4024-aa00-e20ba4508e7d" ,
"ObjectReference" : [
{
"comment" : "" ,
"object_uuid" : "565a1793-5fe6-4024-aa00-e20ba4508e7d" ,
"referenced_uuid" : "2be25da5-2716-4bb5-b8e7-cc49a557b6ea" ,
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"relationship_type" : "analysed-with" ,
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"timestamp" : "1577112077" ,
"uuid" : "5e00d20d-70a0-4d2a-b4f3-4be702de0b81"
} ,
{
"comment" : "" ,
"object_uuid" : "565a1793-5fe6-4024-aa00-e20ba4508e7d" ,
"referenced_uuid" : "5e00d186-98c8-4333-8ce9-464802de0b81" ,
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"relationship_type" : "connects-to" ,
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"timestamp" : "1577112202" ,
"uuid" : "5e00d28a-3a3c-40f9-8c10-43f902de0b81"
}
] ,
"Attribute" : [
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "md5" ,
"timestamp" : "1577111995" ,
"to_ids" : true ,
"type" : "md5" ,
"uuid" : "46d8a2f5-3b3f-429f-a4da-f5997e0e248d" ,
"value" : "93363683dcf1ccc4db296fa5fde69b71"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "sha1" ,
"timestamp" : "1577111995" ,
"to_ids" : true ,
"type" : "sha1" ,
"uuid" : "b0f200bb-2129-4771-9280-e60954c4346d" ,
"value" : "0d4570ae80f9fca2d4b68a7f4b88dd0eb2df3573"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "sha256" ,
"timestamp" : "1577111995" ,
"to_ids" : true ,
"type" : "sha256" ,
"uuid" : "5e7c2942-9b88-48a6-99e8-00c5246bd169" ,
"value" : "5141d29d0278c8da4eac177126cbf4d15623502d4763abd6d3a4dca2a3ea616e"
}
]
} ,
{
"comment" : "" ,
"deleted" : false ,
"description" : "VirusTotal report" ,
"meta-category" : "misc" ,
"name" : "virustotal-report" ,
"template_uuid" : "d7dd0154-e04f-4c34-a2fb-79f3a3a52aa4" ,
"template_version" : "2" ,
"timestamp" : "1577112076" ,
"uuid" : "2be25da5-2716-4bb5-b8e7-cc49a557b6ea" ,
"Attribute" : [
{
"category" : "Other" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "last-submission" ,
"timestamp" : "1577111995" ,
"to_ids" : false ,
"type" : "datetime" ,
"uuid" : "455902f8-0097-4722-b3e8-632b0576b786" ,
"value" : "2019-12-23T14:37:22"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "permalink" ,
"timestamp" : "1577111995" ,
"to_ids" : false ,
"type" : "link" ,
"uuid" : "8e8622e6-c217-4007-b5b1-f687b7229150" ,
"value" : "https://www.virustotal.com/file/5141d29d0278c8da4eac177126cbf4d15623502d4763abd6d3a4dca2a3ea616e/analysis/1577111842/"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : true ,
"object_relation" : "detection-ratio" ,
"timestamp" : "1577111995" ,
"to_ids" : false ,
"type" : "text" ,
"uuid" : "9eace253-03a3-48a4-b9df-372f58d000fe" ,
"value" : "16/60"
}
]
} ,
{
"comment" : "The payload" ,
"deleted" : false ,
"description" : "File object describing a file with meta-information" ,
"meta-category" : "file" ,
"name" : "file" ,
"template_uuid" : "688c46fb-5edb-40a3-8273-1af7923e2215" ,
"template_version" : "18" ,
"timestamp" : "1577112153" ,
"uuid" : "5e00d259-cf84-4973-84be-41ac02de0b81" ,
"Attribute" : [
{
"category" : "Payload delivery" ,
"comment" : "" ,
"data" : "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" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "malware-sample" ,
"timestamp" : "1577112153" ,
"to_ids" : true ,
"type" : "malware-sample" ,
"uuid" : "5e00d259-8d4c-4fa8-bbea-4b7e02de0b81" ,
"value" : "pay.bin|93363683dcf1ccc4db296fa5fde69b71"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "filename" ,
"timestamp" : "1577112153" ,
"to_ids" : false ,
"type" : "filename" ,
"uuid" : "5e00d259-7370-4e58-bea0-4dfb02de0b81" ,
"value" : "pay.bin"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "md5" ,
"timestamp" : "1577112153" ,
"to_ids" : true ,
"type" : "md5" ,
"uuid" : "5e00d259-8c38-461a-9b02-43f702de0b81" ,
"value" : "93363683dcf1ccc4db296fa5fde69b71"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "sha1" ,
"timestamp" : "1577112153" ,
"to_ids" : true ,
"type" : "sha1" ,
"uuid" : "5e00d259-b210-480a-85a7-497502de0b81" ,
"value" : "0d4570ae80f9fca2d4b68a7f4b88dd0eb2df3573"
} ,
{
"category" : "Payload delivery" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : false ,
"object_relation" : "sha256" ,
"timestamp" : "1577112153" ,
"to_ids" : true ,
"type" : "sha256" ,
"uuid" : "5e00d259-d1fc-4073-b121-488c02de0b81" ,
"value" : "5141d29d0278c8da4eac177126cbf4d15623502d4763abd6d3a4dca2a3ea616e"
} ,
{
"category" : "Other" ,
"comment" : "" ,
"deleted" : false ,
"disable_correlation" : true ,
"object_relation" : "size-in-bytes" ,
"timestamp" : "1577112154" ,
"to_ids" : false ,
"type" : "size-in-bytes" ,
"uuid" : "5e00d25a-01c0-4481-8e5c-437802de0b81" ,
"value" : "249"
}
]
}
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]
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}
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}