alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO JAVA - ClassID"; flow:established,to_client; file_data; content:"CAFEEFAC-00"; content:"-FFFF-ABCDEFFEDCBA"; distance:7; within:18; classtype:misc-activity; sid:2016361; rev:2; metadata:created_at 2013_02_07, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)