#alert http $HOME_NET any -> $EXTERNAL_NET any (
# msg:"ET MALWARE Vawtrak/NeverQuest CnC Beacon";
# flow:established,to_server;
# flowbits:set,ET.Vawtrak;
# http.method;
# content:"POST";
# http.uri;
# content:".php?";
# content:"/0";
# content:"=0000"; fast_pattern;
# content:"=?";
# pcre:"/\.php\?[a-z]+=0000[a-fA-F0-9]{4}&[a-z]+=\?[A-F0-9]+&[a-z]=\d{4}&[a-z]=\d{4}$/";
# http.header;
# content:"Accept";
# http.content_type;
# content:"application/x-www-form-urlencoded"; bsize:33;
# http.header_names;
# content:!"Referer|0d 0a|";
# reference:md5,1b820dda5833f802be829d468884884e;
# classtype:command-and-control;
# sid:2025089; rev:6;
# metadata:attack_target Client_Endpoint, created_at 2015_08_25, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag c2, updated_at 2024_04_29, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
#)