alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA582 CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|3f|s|3d|"; pcre:"/^(?:[a-z0-9]{8}\x2d[a-z0-9]{4}\x2d[a-z0-9]{4}\x2d[a-z0-9]{4}\x2d[a-z0-9]{12})/R"; content:"&id="; within:5; content:"&key="; distance:0; http.user_agent; content:"WindowsPowerShell"; fast_pattern; http.host; content:".top"; pcre:"/[a-n]{15}\.top/W"; reference:md5,757e4dbf84c9e02c7a2609a4a3180fe9; classtype:command-and-control; sid:2060108; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_02_14, deployment Perimeter, confidence High, signature_severity Critical, tag c2, tag TA582, updated_at 2025_02_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)