ET MALWARE CozyCar V2 CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE CozyCar V2 CnC Beacon";
    flow:established,to_server;
    http.header;
    content:"=12&";
    content:"=2"; distance:1; within:8;
    content:"=="; distance:12; within:6;
    content:"=="; distance:18; within:10;
    http.request_line;
    content:".php? HTTP/1."; fast_pattern;
    reference:url,www.us-cert.gov/security-publications/GRIZZLY-STEPPE-Russian-Malicious-Cyber-Activity;
    classtype:command-and-control;
    sid:2023966; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_17, deployment Perimeter, malware_family APT29_CozyCar, confidence High, signature_severity Major, tag c2, updated_at 2020_10_30, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)