ET MALWARE DustySky CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE DustySky CnC Beacon";
    flow:established,to_server;
    http.uri;
    content:".php?";
    content:"Pn="; nocase; distance:0; fast_pattern;
    content:"&ID="; nocase;
    content:"&o=";
    content:"&av=";
    http.header_names;
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,07fd870e4ea8dd6b9503a956b5bb47f3;
    classtype:command-and-control;
    sid:2021919; rev:7;
    metadata:attack_target Client_Endpoint, created_at 2015_10_06, deployment Perimeter, performance_impact Moderate, 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;
)