alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Fake Windows User-Agent Observed"; reference:md5,8ea817d7912b66dd8db4541ba908b1c2; classtype:misc-activity; sid:2072426; rev:1; metadata:affected_product Windows_Client, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_10_12, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, updated_at 2026_10_12, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)