alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Winwebsec.B Checkin"; flow:established,to_server; http.uri; content:"/temp1.jpg"; fast_pattern; http.user_agent; bsize:11; content:"HTTP Client"; reference:md5,9c9109cea5845272d6abd1b5523c8de7; classtype:command-and-control; sid:2014578; rev:4; metadata:created_at 2012_04_16, signature_severity Major, updated_at 2024_02_16;)