alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Banker PWS/Infostealer HTTP GET Checkin"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"guid="; nocase; content:"ver="; nocase; content:"stat="; nocase; content:"ie="; nocase; content:"os="; nocase; content:"ut="; nocase; content:"cpu="; nocase; fast_pattern; http.user_agent; content:"Microsoft Internet Explorer"; depth:27; endswith; nocase; reference:url,www.pctools.com/mrc/infections/id/Trojan.Banker/; classtype:command-and-control; sid:2009550; rev:10; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_13;)