alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT FlimKit Landing July 10 2013"; flow:established,from_server; file_data; flowbits:isset,FlimKit.SWF.Redirect; content:".substring("; fast_pattern:only; nocase; content:"document.write("; nocase; content:".substring("; distance:0; nocase; content:".substring("; distance:0; nocase; content:".substring("; distance:0; nocase; classtype:trojan-activity; sid:2017126; rev:3; metadata:created_at 2013_07_11, signature_severity Major, updated_at 2019_07_26;)