73 lines
2.8 KiB
Text
73 lines
2.8 KiB
Text
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/*
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Yara Rule Set
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Author: RSA RESEARCH, Florian Roth
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Date: 2015-11-23
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Identifier: GlassRAT
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*/
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rule glassRAT
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{
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meta:
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author = "RSA RESEARCH"
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date = "3 Nov 2015"
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description = "Detects GlassRAT by RSA (modified by Florian Roth - speed improvements)"
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Info = "GlassRat"
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/* MD5s
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37adc72339a0c2c755e7fef346906330
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59b404076e1af7d0faae4a62fa41b69f
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5c17395731ec666ad0056d3c88e99c4d
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e98027f502f5acbcb5eda17e67a21cdc
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87a965cf75b2da112aea737220f2b5c2
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22e01495b4419b564d5254d2122068d9
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42b57c0c4977a890ecb0ea9449516075
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b7f2020208ebd137616dadb60700b847 */
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id = "7739d1f6-f16d-5599-9388-a1d89dbeb355"
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strings:
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$bin1 = {85 C0 B3 01} /* test eax, eax
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mov bl, 1 */
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// $bin2 = {34 02} // xor al, 2 ---> XOR key for rundll32.exe
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$bin3 = {68 4C 50 00 10} // push offset KeyName ; "2"
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$bin4 = {68 48 50 00 10} // push offset a3 ; "3"
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$bin5 = {68 44 50 00 10} // push offset a4 ; "4"
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$hs = {CB FF 5D C9 AD 3F 5B A1 54 13 FE FB 05 C6 22} // Initial Handshake ---> can be added or removed for hunting for different variants
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//$re1 = {50 00 00 00}
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//$re2 = {BB 01 00 00}
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// Dwords of C2 Ports (80 | 443 | 53) 2 -3 times
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$s1 = "pwlfnn10,gzg" // rundll32.exe XOR 02
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$s2 = "AddNum"
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$s3 = "ServiceMain"
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$s4 = "The Window"
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$s5 = "off.dat"
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condition:
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all of ($bin*) and $hs and 3 of ($s*) //The conditions can be adjusted for hunting for different variants
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}
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rule GlassRAT_Generic {
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meta:
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description = "Detects GlassRAT 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://blogs.rsa.com/peering-into-glassrat/"
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date = "2015-11-23"
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score = 80
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hash1 = "30d26aebcee21e4811ff3a44a7198a5c519843a24f334880384a7158e07ae399"
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hash2 = "3bdeb3805e9230361fb93c6ffb0bfec8d3aee9455d95b2428c7f6292d387d3a4"
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hash3 = "79993f1912958078c4d98503e00dc526eb1d0ca4d020d17b010efa6c515ca92e"
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hash4 = "a9b30b928ebf9cda5136ee37053fa045f3a53d0706dcb2343c91013193de761e"
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hash5 = "c11faf7290299bb13925e46d040ed59ab3ca8938eab1f171aa452603602155cb"
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hash6 = "d95fa58a81ab2d90a8cbe05165c00f9c8ad5b4f49e98df2ad391f5586893490d"
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hash7 = "f1209eb95ce1319af61f371c7f27bf6846eb90f8fd19e8d84110ebaf4744b6ea"
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id = "d09c4a9f-15ad-56d7-b015-94f494420e98"
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strings:
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$s1 = "cmd.exe /c %s" fullword ascii
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$s2 = "update.dll" fullword ascii
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$s3 = "SYSTEM\\CurrentControlSet\\Services\\RasAuto\\Parameters" fullword ascii
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$s4 = "%%temp%%\\%u" fullword ascii
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$s5 = "\\off.dat" ascii
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$s6 = "rundll32 \"%s\",AddNum" fullword ascii
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$s7 = "cmd.exe /c erase /F \"%s\"" fullword ascii
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$s8 = "SYSTEM\\ControlSet00%d\\Services\\RasAuto" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 15MB and 5 of them
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}
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