alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT KaiXin EK Possible Jar Download"; flow:established,to_server; content:"Java/1."; http_user_agent; content:"=Yes"; http_cookie; content:"cck_lasttime="; http_cookie; content:"cck_count="; http_cookie; classtype:exploit-kit; sid:2020477; rev:3; metadata:created_at 2015_02_19, confidence Medium, signature_severity Major, updated_at 2019_07_26;)