Windows_Trojan_CobaltStrike_92f05172

rule Windows_Trojan_CobaltStrike_92f05172 {
    meta:
        author = "Elastic Security"
        id = "92f05172-f15c-4077-a958-b8490378bf08"
        fingerprint = "09b1f7087d45fb4247a33ae3112910bf5426ed750e1e8fe7ba24a9047b76cc82"
        creation_date = "2021-03-23"
        last_modified = "2021-08-23"
        description = "Identifies UAC cmstp module from Cobalt Strike"
        threat_name = "Windows.Trojan.CobaltStrike"
        severity = 100
        arch_context = "x86, arm64"
        scan_context = "file, memory"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $a1 = "Z:\\devcenter\\aggressor\\external\\pxlib\\bin\\uaccmstp.x64.o" ascii fullword
        $a2 = "Z:\\devcenter\\aggressor\\external\\pxlib\\bin\\uaccmstp.x86.o" ascii fullword
        $b1 = "elevate_cmstp" ascii fullword
        $b2 = "$pdata$elevate_cmstp" ascii fullword
        $b3 = "$unwind$elevate_cmstp" ascii fullword
        $c1 = "_elevate_cmstp" ascii fullword
        $c2 = "__imp__OLE32$CoGetObject@16" ascii fullword
        $c3 = "__imp__KERNEL32$GetModuleFileNameA@12" ascii fullword
        $c4 = "__imp__KERNEL32$GetSystemWindowsDirectoryA@8" ascii fullword
        $c5 = "OLDNAMES"
        $c6 = "__imp__BeaconDataParse" ascii fullword
        $c7 = "_willAutoElevate" ascii fullword
    condition:
        1 of ($a*) or 3 of ($b*) or 4 of ($c*)
}