alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Fiesta EK randomized javascript Gate Jul 18 2014"; flow:established,to_server; urilen:23<>85; http.method; content:"GET"; http.uri; content:".js?"; fast_pattern; content:"="; distance:7; within:26; content:!"&"; pcre:"/^\/[A-Za-z0-9]{6,16}\.js\?[a-zA-Z0-9]{7,32}=(?![0-9]+$)[a-f0-9]{5,30}$/U"; http.header; pcre:"/^Host\x3a\x20[^\.\r\n]+?\.[a-z]{2,4}\r\n/mi"; classtype:exploit-kit; sid:2018741; rev:3; metadata:created_at 2014_07_18, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_30;)