alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kamasers CnC Victim Initial Checkin (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"|7b 22|bot|5f|id|22 3a 22|"; startswith; content:"|22 2c 22|build|5f|version|22 3a 22|"; content:"|22 2c 22|admin|5f|rights|22 3a 22|"; fast_pattern; content:"|22 2c 22|system|5f|info|22 3a 7b 22|os|22 3a 22|"; reference:md5,6f0aa62d8d6111908e3b90afa374c77a; reference:url,app.any.run/tasks/fbaf505e-bf8d-4ebf-b29c-64e9f8f5028e; classtype:command-and-control; sid:2065264; 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_10_21, deployment Perimeter, malware_family Kamasers, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)