ET MALWARE ContEXE Stealer CnC Checkin Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE ContEXE Stealer CnC Checkin Attempt";
    flow:established,to_server;
    xbits:set,ET.ContEXE_Stealer,track ip_pair,expire 300;
    http.method;
    content:"POST";
    http.uri;
    content:"/v1/agent/enroll";
    http.request_body;
    content:"|22|build_id|22|";
    content:"|22|enroll|5f|secret|22|";
    content:"|22|machine_id|22|"; fast_pattern;
    reference:md5,9c1d8a309c1ef2d781c5503cfcd96f53;
    reference:md5,ccfcb42c83ff8315662d54c560a2c8e2;
    classtype:trojan-activity;
    sid:2072362; 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 TLSDecrypt, created_at 2026_10_05, deployment Perimeter, deployment SSLDecrypt, malware_family ContEXE_Stealer, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2026_10_05, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system;
    target:src_ip;
)