alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE CyberGate RAT Checkin"; flow:to_server,established; http.uri; content:".php?"; content:"email="; content:"&serverid="; content:"User|3a|"; content:"PC|3a|"; http.header_names; content:!"Referer"; reference:md5,24d9f082b849b4c698e6b012500d441a; classtype:command-and-control; sid:2018659; rev:3; metadata:created_at 2014_07_10, signature_severity Major, updated_at 2020_04_30;)