alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Styx EK iexp.html"; flow:established,to_server; content:"/iexp.html"; http_uri; content:!"&"; http_uri; classtype:exploit-kit; sid:2017819; rev:5; metadata:created_at 2013_12_10, confidence High, signature_severity Major, updated_at 2019_07_26;)