alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Agent.WVW CnC Beacon 1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/s?"; depth:3; fast_pattern; content:"|3b|"; distance:0; content:"|3b|"; distance:0; content:"."; distance:1; within:2; content:"_"; distance:0; pcre:"/^\/s\?\d+\x3b\d+\x3b\d{1,2}\.\d_(?:32|64)_\d+(?:\x3b\d+){4}$/"; reference:md5,1de834aca8905124e1abcd4f71dea062; classtype:command-and-control; sid:2021257; rev:3; metadata:attack_target Client_Endpoint, created_at 2015_06_11, deployment Perimeter, malware_family Win32_Agent_WVW, signature_severity Major, tag c2, updated_at 2020_05_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)