alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/RecordBreaker Checkin M2"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:1; content:"/"; http.user_agent; content:"mozzzzzzzzzzz"; fast_pattern; http.request_body; content:"machineId="; startswith; content:"&configId="; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,bf9fa2681da355e328f6eb8c63da8253; classtype:trojan-activity; sid:2037274; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_05, deployment Perimeter, malware_family RecordBreaker, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30, reviewed_at 2025_01_22;)