alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE InvisibleFerret CnC Activity (POST) M1"; flow:established,to_server; urilen:<6; http.method; content:"POST"; http.uri; content:"/key"; startswith; pcre:"/^s?$/R"; http.user_agent; content:"python-requests"; http.request_body; pcre:"/^(ts|timestamp)\x3d(?:[0-9]{13})/"; content:"&type="; distance:0; content:"&hid="; distance:0; fast_pattern; content:"&ss="; distance:0; content:"&cc="; distance:0; classtype:command-and-control; sid:2060605; 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_03_05, deployment Perimeter, malware_family InvisibleFerret, confidence High, signature_severity Critical, tag c2, updated_at 2025_03_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)