alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Potential Fiesta Flash Exploit"; flow:established,to_server; content:"/?"; http_uri; content:"|3b|"; distance:60; within:7; http_uri; pcre:"/\/\?[0-9a-f]{60,66}\x3b(?:1(?:0[0-3]|1\d)|90)\d{1,3}\x3b\d{1,3}$/U"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016726; rev:6; metadata:created_at 2013_04_05, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)