alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT CritXPack Jar Request"; flow:established,to_server; http.uri; content:"/j.php?t=u00"; fast_pattern; http.user_agent; content:"Java/1."; classtype:exploit-kit; sid:2015960; rev:14; metadata:created_at 2012_11_29, signature_severity Major, updated_at 2020_09_22;)