alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Download of .MOV Content flowbit set"; flow:established,to_client; file_data; content:"|6D 6F 6F 76|"; distance:4; within:4; flowbits:noalert; flowbits:set,ET.MP4.Download; reference:url,www.garykessler.net/library/file_sigs.html; classtype:misc-activity; sid:2024690; rev:3; metadata:created_at 2017_09_08, deprecation_reason Relevance, signature_severity Informational, tag noalert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_24;)