31 lines
977 B
Text
31 lines
977 B
Text
/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2017-10-03
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Identifier: CMStar Threat Actor
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Reference: https://goo.gl/pTffPA
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*/
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/* Rule Set ----------------------------------------------------------------- */
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import "pe"
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rule CMStar_Malware_Sep17 {
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meta:
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description = "Detects CMStar Malware"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://goo.gl/pTffPA"
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date = "2017-10-03"
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hash1 = "16697c95db5add6c1c23b2591b9d8eec5ed96074d057b9411f0b57a54af298d5"
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id = "d6c9cd7f-06ce-5641-b9b2-c81daf18628d"
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strings:
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$s1 = "UpdateService.tmp" fullword ascii
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$s2 = "StateNum:%d,FileSize:%d" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 100KB and (
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pe.imphash() == "22021985de78a48ea8fb82a2ff9eb693" or
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pe.exports("WinCred") or
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all of them
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)
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}
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