2020-02-13 12:14:44 +00:00
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/*
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YARA Rule Set
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Author: Arkbird SOLG
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Date: 2020-02-13
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Reference: https://github.com/StrangerealIntel/CyberThreatIntel/blob/master/Additional%20Analysis/Neutrino/Analysis_2020-02-08.md
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*/
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import "pe"
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rule Dropper_Neutrino_Feb_20 {
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meta:
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description = "Detect the dropper used by Neutrino"
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author = "Arkbird SOLG"
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reference = "https://github.com/StrangerealIntel/CyberThreatIntel/blob/master/Additional%20Analysis/Neutrino/Analysis_2020-02-08.md"
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date = "2020-02-13"
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hash1 = "c0355c2a7241cb9f764297cf4e7e758116c82db35f909cf18091ec2085fe23ce"
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strings:
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$s1 = "@\\*.exe" fullword wide
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$s2 = "process call create %s" fullword wide
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$s3 = " /a /c %s" fullword wide
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$s4 = "netsh firewall add allowedprogram \"%s\" %s ENABLE" fullword wide
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$s5 = "netsh advfirewall firewall add rule name=\"%s\" dir=in action=allow program=\"%s\"" fullword wide
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$s6 = "QSSSSSSWS" fullword ascii
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$s7 = "+ :_`3" fullword ascii
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$s8 = "z`fFbffafVcfv`" fullword ascii
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$s9 = "mQWD5Wt" fullword ascii
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$s10 = "XjkYjaf" fullword ascii
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$s11 = "QQSVWhu" fullword ascii
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$s12 = "WFxbH|`" fullword ascii
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$s13 = "SVWjQXjmYjdf" fullword ascii
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$s14 = "VWjQXjMf" fullword ascii
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$s15 = "-QTUCTu@" fullword ascii
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$s16 = "XjmZjnf" fullword ascii
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$s17 = "VWjQXjmYjdf" fullword ascii
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$s18 = "VjQXjMf" fullword ascii
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$s19 = "x`FDbFdaFTcF^" fullword ascii
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$s20 = "jdXj2YC" fullword ascii
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condition:
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2020-08-29 14:48:56 +00:00
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uint16(0) == 0x5a4d and filesize > 300KB and
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2020-02-13 12:14:44 +00:00
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( pe.imphash() == "934381a85d55af4033da1a769f2cce1d" or 8 of them )
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}
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