alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspicious Fake Windows User-Agent in HTTP Header"; flow:established,to_server; http.user_agent; content:"Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|10|2e|0|3b 20|Win64|3b 20|x64|29|"; bsize:41; fast_pattern; content:!"AppleWebKit"; http.host; content:!"www.pspad.com"; reference:url,bruteratel.com/tabs/ratelserver/c4profiles/; classtype:trojan-activity; sid:2063592; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_09_15, deployment Perimeter, deployment SSLDecrypt, performance_impact Significant, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_21, reviewed_at 2024_12_02; target:src_ip;)