misp-circl-feed/feeds/circl/stix-2.1/6b6fa46d-4a17-44a4-a234-d69487b04597.json

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2023-12-14 14:30:15 +00:00
{
"type": "bundle",
"id": "bundle--6b6fa46d-4a17-44a4-a234-d69487b04597",
"objects": [
{
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"created": "2023-08-25T06:23:39.000Z",
"modified": "2023-08-25T06:23:39.000Z",
"name": "CIRCL",
"identity_class": "organization"
},
{
"type": "report",
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"id": "report--6b6fa46d-4a17-44a4-a234-d69487b04597",
"created_by_ref": "identity--55f6ea5e-2c60-40e5-964f-47a8950d210f",
"created": "2023-08-25T06:23:39.000Z",
"modified": "2023-08-25T06:23:39.000Z",
"name": "CISA - MAR-10459736.r1.v1 - WHIRLPOOL Variant",
"published": "2023-08-25T06:23:46Z",
"object_refs": [
"indicator--3e5f8fc0-da1f-47f0-8b6e-f4c4b033ce47",
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"relationship--de09e091-66a8-48d7-b0e0-109c70a45fd2",
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],
"labels": [
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"misp:tool=\"MISP-STIX-Converter\"",
"type:OSINT",
"osint:lifetime=\"perpetual\"",
"tlp:clear"
],
"object_marking_refs": [
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]
},
{
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"description": "The file 'ssld' is a Linux ELF reverse shell and is a variant of WHIRLPOOL malware used on the Barracuda Email Security Gateway (ESG) device (Figure 1). The file looks for an encoded string with a '.io' extension (Figure 2). The string will be decoded and the data will be passed as the C2 which will include the Internet Protocol (IP) address and port number used to establish a reverse shell.",
"pattern": "['namespace'='CISA_Consolidated.yara' rule_name=CISA_10452108_02 rule_content=rule CISA_10452108_02 : WHIRLPOOL backdoor communicates_with_c2 installs_other_components\n{\n\tmeta:\n\t\tAuthor = \"CISA Code & Media Analysis\"\n\t\tIncident = \"10452108\"\n\t\tDate = \"2023-06-20\"\n\t\tLast_Modified = \"20230804_1730\"\n\t\tActor = \"n/a\"\n\t\tFamily = \"WHIRLPOOL\"\n\t\tCapabilities = \"communicates-with-c2 installs-other-components\"\n\t\tMalware_Type = \"backdoor\"\n\t\tTool_Type = \"unknown\"\n\t\tDescription = \"Detects malicious Linux WHIRLPOOL samples\"\n\t\tSHA256_1 = \"83ca636253fd1eb898b244855838e2281f257bbe8ead428b69528fc50b60ae9c\"\n\t\tSHA256_2 = \"8849a3273e0362c45b4928375d196714224ec22cb1d2df5d029bf57349860347\"\n\tstrings:\n\t\t$s0 = { 65 72 72 6f 72 20 2d 31 20 65 78 69 74 }\n\t\t$s1 = { 63 72 65 61 74 65 20 73 6f 63 6b 65 74 20 65 72 72 6f 72 3a 20 25 73 28 65 72 72 6f 72 3a 20 25 64 29 }\n\t\t$s2 = { c7 00 20 32 3e 26 66 c7 40 04 31 00 }\n\t\t$a3 = { 70 6c 61 69 6e 5f 63 6f 6e 6e 65 63 74 }\n\t\t$a4 = { 63 6f 6e 6e 65 63 74 20 65 72 72 6f 72 3a 20 25 73 28 65 72 72 6f 72 3a 20 25 64 29 }\n\t\t$a5 = { 73 73 6c 5f 63 6f 6e 6e 65 63 74 }\n\tcondition:\n\t\tuint32(0) == 0x464c457f and 4 of them\n}]",
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"valid_from": "2023-08-17T19:19:43.944668Z",
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}
],
"labels": [
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"misp:to_ids=\"True\""
]
},
{
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"created": "2023-04-12T17:53:09.000Z",
"modified": "2023-04-12T17:53:09.000Z",
"name": "GeminiProduction_CMA",
"description": "Cybersecurity and Infrastructure Security Agency Production Identity. Code and Media Analysis.",
"identity_class": "system",
"labels": [
"misp:name=\"identity\"",
"misp:meta-category=\"misc\"",
"misp:to_ids=\"False\"",
"misp:confidence-level=\"completely-confident\""
],
"confidence": 100
},
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],
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"object_relation": "product",
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"uuid": "42e406d8-bcb1-468d-b9d1-195810672cab"
},
{
"type": "text",
"object_relation": "result",
"value": "unknown",
"category": "Other",
"uuid": "aea648ae-f790-412a-8511-22728becdb95"
},
{
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"value": "a variant of Linux/WhirlPool.A trojan",
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}
],
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{
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"created": "2023-08-09T21:12:59.000Z",
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"pattern": "[file:hashes.MD5 = '77e1e9bf69b09ed0840534adb8258540' AND file:hashes.SHA1 = 'deadca9bd85ee5c4e086fd81eee09407b769e9b6' AND file:hashes.SHA256 = '0af253e60456b03af49cc675f71d47b2dd9a48f50a927e43b9d8116985c06459' AND file:hashes.SHA512 = '3ad6bd00c4195c9b1757a9d697196e8beffb343c331509c2eda24bbbd009cc1af552a1900ab04d169a22d273e6359cb2ff149050a7f792b9630108a4af226e2d' AND file:hashes.SSDEEP = '98304:1z2EGoxipg0NPbuqbVxbNgqE+Q+F4YGZLx4BAFm/CyU:LLXYGNFLj' AND file:name = 'ssld' AND file:size = '5034648']",
"pattern_type": "stix",
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"valid_from": "2023-08-09T21:12:59Z",
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{
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}
],
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]
},
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],
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"value": "The file 'ssld' is a Linux ELF reverse shell and is a variant of WHIRLPOOL malware used on the Barracuda Email Security Gateway (ESG) device (Figure 1). The file looks for an encoded string with a '.io' extension (Figure 2). The string will be decoded and the data will be passed as the C2 which will include the Internet Protocol (IP) address and port number used to establish a reverse shell.",
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},
{
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},
{
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},
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],
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"value": "STIX 2.1",
"category": "Other",
"uuid": "5c4002e7-7313-479e-911e-eb4920d76fc7"
}
],
"x_misp_meta_category": "file",
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},
{
"type": "relationship",
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"id": "relationship--de09e091-66a8-48d7-b0e0-109c70a45fd2",
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"created": "2023-08-25T06:18:51.000Z",
"modified": "2023-08-25T06:18:51.000Z",
"relationship_type": "analyses",
"source_ref": "x-misp-object--07141506-e989-4a25-b510-797383e9b01a",
"target_ref": "indicator--efd3fd98-6f1b-590d-bdd4-1e0753d3a689"
},
{
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"id": "relationship--9e5d9f1f-e131-4e28-be15-35d8920b5786",
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"created": "2023-08-25T06:18:51.000Z",
"modified": "2023-08-25T06:18:51.000Z",
"relationship_type": "associated-with",
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"target_ref": "x-misp-object--626a2549-5775-43a8-b8bb-2fe2682a6dae"
},
{
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"id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9",
"created": "2017-01-20T00:00:00.000Z",
"definition_type": "tlp",
"name": "TLP:WHITE",
"definition": {
"tlp": "white"
}
}
]
}