alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Observed Suspicious UA (Windows)"; flow:established,to_server; http.user_agent; bsize:7; content:"Windows"; http.header; header_lowercase; content:"user-agent|3a 20|Windows|0d 0a|"; fast_pattern; classtype:bad-unknown; sid:2028879; rev:5; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2019_10_21, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Minor, updated_at 2024_04_29;)