alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/ServStart.Variant CnC Beacon"; flow:established,to_server; http.uri; content:"&mac="; nocase; content:"type="; nocase; content:"id="; nocase; http.user_agent; bsize:9; content:"Google ++"; fast_pattern; classtype:command-and-control; sid:2016355; rev:4; metadata:attack_target Client_Endpoint, created_at 2013_02_05, deployment Perimeter, signature_severity Major, tag c2, updated_at 2024_03_10, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)