ET MALWARE Villain C2 Framework HTTP Server Response

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Villain C2 Framework HTTP Server Response";
    flow:established,to_client;
    http.response_line;
    content:"HTTP/1.0 200 OK";
    http.header.raw;
    content:"Server|3a 20|Apache/2.4.1|20 0d 0a|"; fast_pattern;
    http.header;
    content:"Access-Control-Allow-Origin|3a 20|*";
    threshold:type limit, seconds 120, count 1, track by_dst;
    classtype:trojan-activity;
    sid:2042770; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_12_13, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_13, reviewed_at 2025_07_14;
)