79 lines
3.5 KiB
Text
79 lines
3.5 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: 2018-01-29
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Identifier: TopHat
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Reference: https://researchcenter.paloaltonetworks.com/2018/01/unit42-the-tophat-campaign-attacks-within-the-middle-east-region-using-popular-third-party-services/#appendix
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*/
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/* Rule Set ----------------------------------------------------------------- */
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import "pe"
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rule TopHat_Malware_Jan18_1 {
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meta:
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description = "Detects malware from TopHat campaign"
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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://researchcenter.paloaltonetworks.com/2018/01/unit42-the-tophat-campaign-attacks-within-the-middle-east-region-using-popular-third-party-services/#appendix"
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date = "2018-01-29"
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hash1 = "5c0b253966befd57f4d22548f01116ffa367d027f162514c1b043a747bead596"
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hash2 = "1f9bca1d5ce5d14d478d32f105b3ab5d15e1c520bde5dfca22324262e84d4eaf"
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id = "ec290eee-a21e-548d-b7cc-3e25e7c39d22"
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strings:
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$s1 = "WINMGMTS:\\\\.\\ROOT\\CIMV2" fullword ascii
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$s2 = "UENCRYPTION" fullword ascii
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$s3 = "TEXPORTAPIS" fullword ascii
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$s4 = "tcustommemorystream" fullword ascii
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$s5 = "tmemorystream" fullword ascii
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$s6 = "ExtrasNoteCONSOLEemb" fullword ascii
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$s7 = "DIALOG INCLUDE" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 400KB and (
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pe.imphash() == "c221006b240b1c993217bd61e5ee31b6" or
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6 of them
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)
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}
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rule TopHat_Malware_Jan18_2 {
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meta:
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description = "Auto-generated rule - file e.exe"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://researchcenter.paloaltonetworks.com/2018/01/unit42-the-tophat-campaign-attacks-within-the-middle-east-region-using-popular-third-party-services/#appendix"
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date = "2018-01-29"
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modified = "2023-01-06"
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hash1 = "9580d15a06cd59c01c59bca81fa0ca8229f410b264a38538453f7d97bfb315e7"
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id = "a1b8e477-df8a-5ff4-9108-541a0f082f77"
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strings:
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$s1 = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\FontSubstitutes" fullword ascii
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$s2 = "\\SYSTEM\\CurrentControlSet\\Control\\Keyboard Layouts\\" ascii
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$s3 = "LError loading dock zone from the stream. Expecting version %d, but found %d." fullword wide
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$s4 = "WINMGMTS:\\\\.\\ROOT\\CIMV2" fullword ascii
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$s5 = "UENCRYPTION" fullword ascii
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$s6 = "TEXPORTAPIS" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 1000KB and (
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pe.imphash() == "f98cebcae832abc3c46e6e296aecfc03" and
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5 of them
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)
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}
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rule TopHat_BAT {
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meta:
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description = "Auto-generated rule - file cgen.bat"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://researchcenter.paloaltonetworks.com/2018/01/unit42-the-tophat-campaign-attacks-within-the-middle-east-region-using-popular-third-party-services/#appendix"
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date = "2018-01-29"
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hash1 = "f998271c4140caad13f0674a192093092e2a9f7794a7fbbdaa73ae8f2496c387"
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hash2 = "0fbc6fd653b971c8677aa17ecd2749200a4a563f9dd5409cfb26d320618db3e2"
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id = "81e84f1b-0ee7-530d-91ea-645c0994e68f"
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strings:
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$s1 = "= New-Object IO.MemoryStream(,[Convert]::FromBase64String(\"" ascii
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$s2 = "goto Start" fullword ascii
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$s3 = ":Start" fullword ascii
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condition:
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filesize < 5KB and all of them
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}
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