alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Konni APT CnC Checkin (GET)"; flow:established,to_server; http.method; content:"GET"; urilen:57; http.uri; content:"|2f|list|2e|php|3f|"; startswith; fast_pattern; pcre:"/^[0-9]{18}\x3d[a-zA-Z0-9\x25\x2f\x2b]{28}$/R"; http.user_agent; content:"WindowsPowerShell/"; http.connection; bsize:10; content:"Keep-Alive"; reference:md5,ad13b36b7a9e7e7001c44334bfa6a458; reference:url,app.any.run/tasks/41ceae4d-7efe-4d56-b3c8-fdaa49464fac; classtype:command-and-control; sid:2059085; 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_01_09, deployment Perimeter, malware_family KONNI, performance_impact Low, confidence High, signature_severity Critical, tag c2, updated_at 2025_01_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)