ET MALWARE Win32/Agent.WVW CnC Beacon 3

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Agent.WVW CnC Beacon 3";
    flow:to_server,established;
    urilen:4;
    http.header;
    content:"Empty|0d 0a|";
    http.request_line;
    content:"GET /cl1"; depth:8; fast_pattern;
    http.referer;
    content:"1|3a|"; depth:2;
    pcre:"/^\d\.\d_(?:64|32)_\d\x3a/R";
    reference:md5,1de834aca8905124e1abcd4f71dea062;
    classtype:command-and-control;
    sid:2021259; rev:6;
    metadata:attack_target Client_Endpoint, created_at 2015_06_12, deployment Perimeter, malware_family Win32_Agent_WVW, signature_severity Major, tag c2, updated_at 2020_11_02, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)