alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT DRIVEBY Styx Landing Page Mar 08 2014"; flow:established,from_server; file_data; content:"fromCharCode"; content:"substr"; within:200; content:",2,"; within:20; fast_pattern; content:"-"; distance:2; within:4; pcre:"/^\s*?\d/R"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2018260; rev:4; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2014_03_12, deployment Perimeter, signature_severity Major, tag DriveBy, updated_at 2019_07_26;)