alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO JAVA - Java Serialized Data Download"; flow:established,from_server; flowbits:isset,ET.http.javaclient; file_data; content:"|ac ed|"; within:2; flowbits:set,et.exploitkitlanding; classtype:not-suspicious; sid:2016503; rev:4; metadata:attack_target Client_and_Server, created_at 2013_02_26, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2023_04_20; target:dest_ip;)