alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Redkit encrypted binary (1)"; flow:established,to_client; flowbits:isset,ET.http.javaclient; file_data; content:"|fb 67 1f 49|"; within:4; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016113; rev:3; metadata:created_at 2012_12_29, signature_severity Major, updated_at 2019_07_26;)