alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Styx Exploit Kit Secondary Landing"; flow:established,to_server; http.uri; content:".js"; pcre:"/^[a-z]+\.js$/"; http.referer; content:"/i.html"; fast_pattern; pcre:"/^(\?[^=]{1,10}=[^&\r\n]{100,})?$/Ri"; classtype:exploit-kit; sid:2016347; rev:8; metadata:created_at 2013_02_05, signature_severity Major, updated_at 2020_09_18;)