alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspicious user-agent (f**king)"; flow:established,to_server; http.header; content:"fucking|0d 0a|"; fast_pattern; http.user_agent; content:"fucking"; endswith; classtype:trojan-activity; sid:2016317; rev:3; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2013_01_30, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, updated_at 2020_04_23;)