alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Backdoor.Win32.Agent.fvt Checkin"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:".php?"; nocase; content:"lversion="; nocase; content:"wversion=&eversion=&fid="; fast_pattern; nocase; content:"&mac="; nocase; classtype:command-and-control; sid:2008667; rev:8; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_18;)