alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS suspicious user-agent (REKOM)"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"REKOM"; nocase; depth:5; classtype:trojan-activity; sid:2012295; rev:6; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2011_02_07, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, updated_at 2020_10_19;)