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&"; fast_pattern; nocase; content:"s4="; nocase; content:"&s5="; nocase; content:"&nickname="; http.request_body; content:"msg_out="; startswith; nocase; classtype:command-and-control; sid:2007829; rev:11; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_12;)