alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Illusion Bot (Lussilon) Checkin";
flow:established,to_server;
http.method;
content:"POST"; nocase;
http.uri;
content:"?act=online&"; nocase;
content:"s4="; nocase;
content:"&s5="; nocase;
content:"&nickname=";
http.request_body;
content:"msg_out="; depth:8; nocase;
classtype:command-and-control;
sid:2007829; rev:10;
metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;
)