Windows_Ransomware_Sodinokibi_182b2cea

rule Windows_Ransomware_Sodinokibi_182b2cea : beta {
    meta:
        author = "Elastic Security"
        id = "182b2cea-5aae-443a-9a2e-b3121a0ac8c7"
        fingerprint = "b71d862f6d45b388a106bf694e2bf5b4e4d78649c396e89bda46eab4206339fe"
        creation_date = "2020-06-18"
        last_modified = "2021-10-04"
        description = "Identifies SODINOKIBI/REvil ransomware"
        threat_name = "Windows.Ransomware.Sodinokibi"
        reference = "https://www.elastic.co/security-labs/ransomware-interrupted-sodinokibi-and-the-supply-chain"
        reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.revil"
        severity = 100
        arch_context = "x86, arm64"
        scan_context = "file, memory"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $a1 = "expand 32-byte kexpand 16-byte k" ascii fullword
        $b1 = "ServicesActive" wide fullword
        $b2 = "CreateThread" ascii fullword
        $b3 = "GetExitCodeProcess" ascii fullword
        $b4 = "CloseHandle" ascii fullword
        $b5 = "SetErrorMode" ascii fullword
        $b6 = ":!:(:/:6:C:\\:m:" ascii fullword
    condition:
        ($a1 and 6 of ($b*))
}