75 lines
3.6 KiB
Text
75 lines
3.6 KiB
Text
/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2018-06-26
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Identifier: RANCOR
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Reference: https://researchcenter.paloaltonetworks.com/2018/06/unit42-rancor-targeted-attacks-south-east-asia-using-plaintee-ddkong-malware-families/
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*/
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/* Rule Set ----------------------------------------------------------------- */
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import "pe"
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rule APT_RANCOR_JS_Malware {
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meta:
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description = "Rancor 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://researchcenter.paloaltonetworks.com/2018/06/unit42-rancor-targeted-attacks-south-east-asia-using-plaintee-ddkong-malware-families/"
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date = "2018-06-26"
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hash1 = "1dc5966572e94afc2fbcf8e93e3382eef4e4d7b5bc02f24069c403a28fa6a458"
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id = "83dd9567-199e-511c-8c9a-96422bd793e7"
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strings:
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$x1 = ",0,0 >%SystemRoot%\\system32\\spool\\drivers\\color\\fb.vbs\",0,0" fullword ascii
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$x2 = "CreateObject(\"Wscript.Shell\").Run \"explorer.exe \"\"http" ascii
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$x3 = "CreateObject(\"Wscript.Shell\").Run \"schtasks /create" ascii
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condition:
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uint16(0) == 0x533c and filesize < 1KB and 1 of them
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}
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rule APT_RANCOR_PLAINTEE_Variant {
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meta:
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description = "Detects PLAINTEE malware"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://researchcenter.paloaltonetworks.com/2018/06/unit42-rancor-targeted-attacks-south-east-asia-using-plaintee-ddkong-malware-families/"
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date = "2018-06-26"
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hash1 = "6aad1408a72e7adc88c2e60631a6eee3d77f18a70e4eee868623588612efdd31"
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hash2 = "bcd37f1d625772c162350e5383903fe8dbed341ebf0dc38035be5078624c039e"
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id = "f5b68079-0517-504d-a45f-f6ced532db82"
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strings:
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$s1 = "payload.dat" fullword ascii
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$s3 = "temp_microsoft_test.txt" fullword ascii
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$s4 = "reg add %s /v %s /t REG_SZ /d \"%s\"" fullword ascii
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$s6 = "%s %s,helloworld2" fullword ascii
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$s9 = "%s \\\"%s\\\",helloworld" fullword ascii
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$s16 = "recv plugin type %s size:%d" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 100KB and 3 of them
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}
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rule APT_RANCOR_PLAINTEE_Malware_Exports {
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meta:
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description = "Detects PLAINTEE 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://researchcenter.paloaltonetworks.com/2018/06/unit42-rancor-targeted-attacks-south-east-asia-using-plaintee-ddkong-malware-families/"
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date = "2018-06-26"
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hash1 = "c35609822e6239934606a99cb3dbc925f4768f0b0654d6a2adc35eca473c505d"
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id = "fa1e678d-8357-522b-9167-31321ab7753f"
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condition:
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uint16(0) == 0x5a4d and pe.exports("Add") and pe.exports("Sub") and pe.exports("DllEntryPoint") and pe.number_of_exports == 3
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}
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rule APT_RANCOR_DDKONG_Malware_Exports {
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meta:
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description = "Detects DDKONG 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://researchcenter.paloaltonetworks.com/2018/06/unit42-rancor-targeted-attacks-south-east-asia-using-plaintee-ddkong-malware-families/"
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date = "2018-06-26"
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hash1 = "c35609822e6239934606a99cb3dbc925f4768f0b0654d6a2adc35eca473c505d"
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id = "c94d4ea2-7c16-5003-98ea-253f8a2d01d1"
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condition:
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uint16(0) == 0x5a4d and pe.exports("ServiceMain") and pe.exports("Rundll32Call") and pe.exports("DllEntryPoint") and pe.number_of_exports == 3
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}
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