alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Downloader.FakeFlashPlayer Clientregister.php CnC Beacon"; flow:established,to_server; content:"/clientregister.php?type="; http_uri; content:"&uniqid="; http_uri; content:"&winver="; http_uri; content:"&compusername="; http_uri; content:"&compnetname="; http_uri; classtype:command-and-control; sid:2016124; rev:2; metadata:attack_target Client_Endpoint, created_at 2012_12_29, 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;)