alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE LNK/Konni APT CnC Checkin (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?vw="; fast_pattern; content:"&nv="; distance:3; within:4; pcre:"/(?:\x2ephp\x3fvw\x3d(?:[a-z0-9]{3})\x26(?:[a-z]{2})\x3d(?:[a-z0-9]{6}))$/"; http.user_agent; content:"WindowsPowerShell/"; reference:md5,6d6433c328f6cdce4a80efce3a29ea3e; reference:url,twitter.com/fr0s7_/status/1697506531724419277; classtype:trojan-activity; sid:2047883; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_09_01, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag Konni, tag c2, updated_at 2023_09_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)