alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed TelegramNotify User-Agent Outbound"; flow:established,to_server; http.user_agent; content:"telegramnotify"; nocase; fast_pattern; classtype:misc-activity; sid:2064571; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_09_11, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_11; target:dest_ip;)