alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ExplorerHijack Trojan HTTP Checkin"; flow:established,to_server; http.uri; content:"php?i="; content:"&v="; content:"&win=Windows"; content:"&un="; content:"&uv="; content:"&s="; content:"&onl="; content:"&ip="; content:"&f="; classtype:command-and-control; sid:2007700; rev:7; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_18;)