alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE OtterCookie Victim Command Execution Confirmation To CnC Server"; flow:established,to_server; urilen:15; http.method; content:"POST"; http.uri; content:"/api/v2/makelog"; fast_pattern; http.user_agent; content:"axios"; startswith; http.request_body; content:"|7b 22|message|22 3a 22|"; startswith; content:"|22 2c 22|uid|22 3a 22|"; distance:0; pcre:"/^[a-z0-9]{32}\x22\x7d$/R"; reference:url,jp.security.ntt/tech_blog/en-contagious-interview-ottercookie; classtype:command-and-control; sid:2060639; 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 OtterCookie, 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;)