alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent filled with System Details - GET Request"; flow:established,to_server; http.method; content:"GET"; nocase; http.user_agent; content:"mac="; startswith; nocase; content:"&hdid="; fast_pattern; distance:0; nocase; content:"&wlid="; nocase; distance:0; content:"&start="; nocase; distance:0; content:"&os="; nocase; distance:0; content:"&mem="; nocase; distance:0; content:"&alive"; nocase; distance:0; content:"&ver="; nocase; distance:0; content:"&mode="; nocase; distance:0; content:"&guid"; distance:0; content:"&install="; nocase; distance:0; content:"&auto="; nocase; distance:0; content:"&serveid"; nocase; distance:0; content:"&area="; nocase; distance:0; classtype:trojan-activity; sid:2009541; rev:11; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, updated_at 2024_04_14;)