alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win64/TrojanDownloader.Agent.AUO User Agent"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"TrollAV/"; startswith; fast_pattern; nocase; classtype:trojan-activity; sid:2053694; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_06_14, deployment Perimeter, malware_family Win64_TrojanDownloader_Agent_AUO, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_14;)