alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/RecordBreaker - Observed UA M4 (20112211)"; flow:to_server,established; http.user_agent; content:"20112211"; startswith; fast_pattern; reference:md5,8fe4a1f6295a98558b69fdf4e16cd023; classtype:trojan-activity; sid:2041673; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_12_05, deployment Perimeter, malware_family RecordBreaker, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_05;)