Windows_Trojan_CobaltStrike_5b4383ec

rule Windows_Trojan_CobaltStrike_5b4383ec {
    meta:
        author = "Elastic Security"
        id = "5b4383ec-3c93-4e91-850e-d43cc3a86710"
        fingerprint = "283d3d2924e92b31f26ec4fc6b79c51bd652fb1377b6985b003f09f8c3dba66c"
        creation_date = "2021-03-23"
        last_modified = "2021-08-23"
        description = "Identifies Portscan 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 = "portscan.x64.dll" ascii fullword
        $a2 = "portscan.dll" ascii fullword
        $a3 = "\\\\.\\pipe\\portscan" ascii fullword
        $b1 = "(ICMP) Target '%s' is alive. [read %d bytes]" ascii fullword
        $b2 = "(ARP) Target '%s' is alive. " ascii fullword
        $b3 = "TARGETS!12345" ascii fullword
        $b4 = "ReflectiveLoader" ascii fullword
        $b5 = "%s:%d (platform: %d version: %d.%d name: %S domain: %S)" ascii fullword
        $b6 = "Scanner module is complete" ascii fullword
        $b7 = "pingpong" ascii fullword
        $b8 = "PORTS!12345" ascii fullword
        $b9 = "%s:%d (%s)" ascii fullword
        $b10 = "PREFERENCES!12345" ascii fullword
    condition:
        2 of ($a*) or 6 of ($b*)
}