alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Cool Java Exploit Recent Jar (1)"; flow:established,from_server; file_data; content:"PK"; within:2; content:"SunJCE.class"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016407; rev:3; metadata:created_at 2013_02_13, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)