alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Shiz.fxm/Agent-TBT Checkin"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"Mozilla/4.0|20 28|compatible|3b 20|MSIE 2.0|3b|"; depth:34; fast_pattern; http.referer; content:"http://www.google.com"; depth:21; endswith; classtype:command-and-control; sid:2013435; rev:6; metadata:created_at 2011_08_19, signature_severity Major, updated_at 2020_09_14;)