33 lines
1.2 KiB
Text
33 lines
1.2 KiB
Text
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/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2016-02-05
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Identifier: Powerkatz
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*/
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rule Powerkatz_DLL_Generic {
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meta:
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description = "Detects Powerkatz - a Mimikatz version prepared to run in memory via Powershell (overlap with other Mimikatz versions is possible)"
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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 = "PowerKatz Analysis"
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date = "2016-02-05"
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super_rule = 1
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score = 80
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hash1 = "c20f30326fcebad25446cf2e267c341ac34664efad5c50ff07f0738ae2390eae"
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hash2 = "1e67476281c1ec1cf40e17d7fc28a3ab3250b474ef41cb10a72130990f0be6a0"
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hash3 = "49e7bac7e0db87bf3f0185e9cf51f2539dbc11384fefced465230c4e5bce0872"
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id = "7464f8a1-9f45-580b-8a97-a57071092e3c"
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strings:
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$s1 = "%3u - Directory '%s' (*.kirbi)" fullword wide
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$s2 = "%*s pPublicKey : " fullword wide
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$s4 = "<3 eo.oe ~ ANSSI E>" fullword wide
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$s5 = "\\*.kirbi" wide
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$c1 = "kuhl_m_lsadump_getUsersAndSamKey ; kull_m_registry_RegOpenKeyEx SAM Accounts (0x%08x)" fullword wide
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$c2 = "kuhl_m_lsadump_getComputerAndSyskey ; kuhl_m_lsadump_getSyskey KO" fullword wide
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condition:
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( uint16(0) == 0x5a4d and filesize < 1000KB and 1 of them ) or 2 of them
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}
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