alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Proxy.Win32.Agent.mx CnC Beacon"; flow:established,to_server; content:"q.php"; nocase; http_uri; content:"&m="; nocase; http_uri; content:"&a="; nocase; http_uri; content:"&x="; nocase; http_uri; content:"&i="; nocase; http_uri; classtype:command-and-control; sid:2006405; rev:4; metadata:attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)