ET MALWARE VenomRAT CnC Server Keepalive

alert tcp $EXTERNAL_NET [1024:] -> $HOME_NET [49152:] (
    msg:"ET MALWARE VenomRAT CnC Server Keepalive";
    flow:established,to_client;
    flowbits:set,ET.VenomRAT;
    dsize:68;
    content:"|40 00 00 00|"; depth:4; fast_pattern;
    content:!"|00 00 00 00|"; within:4;
    threshold:type both, track by_src, count 10, seconds 120;
    classtype:command-and-control;
    sid:2055754; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_09_05, deployment Perimeter, malware_family VenomRAT, confidence High, signature_severity Critical, updated_at 2024_09_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1095, mitre_technique_name Non_Application_Layer_Protocol;
)