alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (006)"; flow:established,to_server; http.user_agent; content:"00"; depth:2; pcre:"/00\d+$/"; classtype:pup-activity; sid:2006388; rev:12; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Minor, tag User_Agent, updated_at 2022_05_03;)