alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Trojan.Win32.Cosmu.xet CnC Beacon"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"GoGo.ashx?Mac="; content:"&UserId="; content:"&Bate="; reference:md5,f39554f3afe92dca3597efc1f7709ad4; classtype:command-and-control; sid:2011278; rev:5; metadata:attack_target Client_Endpoint, created_at 2010_09_28, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_10, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)