alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/IRCBrute Checkin 2"; flow:established,to_server; content:"/Dialer_Min/telcom.asp"; nocase; http_uri; reference:url,www.sophos.com/en-us/threat-center/threat-analyses/viruses-and-spyware/Troj~DwnLdr-IRB/detailed-analysis.aspx; classtype:command-and-control; sid:2013225; rev:3; metadata:created_at 2011_07_07, signature_severity Major, updated_at 2019_07_26;)