ET MALWARE FakeAV Variant CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE FakeAV Variant CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?id="; fast_pattern;
    pcre:"/\.php\?id=\d+$/";
    http.header;
    content:!"Content-T";
    http.request_body;
    pcre:"/^[\x20-\x7e\r\n]{0,20}[^\x20-\x7e\r\n]/";
    http.header_names;
    content:!"User-Agent|0d 0a|";
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,693ca229558aab99e0a9d3385cacc40c;
    classtype:command-and-control;
    sid:2020706; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2015_03_18, deployment Perimeter, performance_impact Significant, signature_severity Major, tag c2, updated_at 2024_04_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)