alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY Java EXE Download"; flowbits:isset,ET.http.javaclient; flow:established,to_client; content:"|0d 0a 0d 0a|MZ"; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; threshold:type limit,track by_src,count 1,seconds 3; classtype:misc-activity; sid:2013037; rev:8; metadata:created_at 2011_06_16, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_08; target:dest_ip;)