alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Zbot.ivgw Downloading EXE"; flow:to_server,established; http.uri; content:"/forum/images.php?id"; nocase; fast_pattern; http.user_agent; content:"Mozilla/6"; depth:9; content:"|20|MSIE|20|"; distance:0; reference:md5,e8e3d22203f9549d6c5f361dfe51f8c6; classtype:trojan-activity; sid:2016425; rev:7; metadata:created_at 2013_02_19, signature_severity Major, updated_at 2020_09_18;)