43 lines
1.7 KiB
Text
43 lines
1.7 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: 2018-03-06
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Identifier: CrimsonRAT
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Reference: Internal Research
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*/
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/* Rule Set ----------------------------------------------------------------- */
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rule CrimsonRAT_Mar18_1 {
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meta:
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description = "Detects CrimsonRAT 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 = "Internal Research"
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date = "2018-03-06"
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hash1 = "acf2e8013b6fafcf436d5a05049896504ffa2e982bca05155d19981d1931c611"
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hash2 = "7ca6e5ef1d346ec35993c910128a3526b098a07445131784a9358bf5679e3975"
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hash3 = "be4264973de9886caedae1cb707586588d0da85ac7a2ad277db4258033ea12a8"
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hash4 = "acf2e8013b6fafcf436d5a05049896504ffa2e982bca05155d19981d1931c611"
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hash5 = "ff52b4a64ed7caeab00350e493968dbdb159aeb545fcba67d83ab9b158464de4"
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id = "af21876c-f99d-5307-abba-02c57ee93df0"
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strings:
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$x1 = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run|" wide
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$x2 = "\\Release\\RTLBot.pdb" ascii
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$x3 = "cmd.exe/c systeminfo >> 1.txt" fullword wide
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$x4 = "/online >> Get online target with important info" fullword wide
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$x5 = "/screen >> ScreenShot from target PC" fullword wide
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$x6 = "/restart >> Restart Target PC" fullword wide
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$x7 = "/log_key >> Get log key file" fullword wide
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$a1 = "get_ShiftKey" fullword ascii
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$a2 = "get_ControlKey" fullword ascii
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$a3 = "get_AltKey" fullword ascii
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$a4 = "get_MineInterval" fullword ascii
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$fp1 = "Copyright Software Secure" wide
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condition:
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uint16(0) == 0x5a4d and filesize < 400KB and ( 1 of ($x*) or all of ($a*) )
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and not 1 of ($fp*)
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}
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