alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Revcode RAT CnC 2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; http.user_agent; content:"WinHttpRequest"; http.request_body; content:"mode="; fast_pattern; depth:5; content:"&data="; distance:0; content:"&key="; distance:0; http.header_names; content:!"Referer|0d 0a|"; reference:md5,3f652d9bc17a4be3c0e497ea19848344; classtype:command-and-control; sid:2024501; rev:3; metadata:created_at 2017_07_27, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_11;)