alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE XPSecurityCenter FakeAV Checkin"; flow:to_server,established; http.uri; content:"/XPSecurityCenter/"; http.user_agent; content:"Internet Explorer 6.0"; depth:21; endswith; reference:md5,1c5eb2ea27210cf19c6ab24b7cc104b9; classtype:command-and-control; sid:2018761; rev:5; metadata:created_at 2012_07_14, signature_severity Major, updated_at 2020_10_14;)