alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO ISO File Downloaded"; flow:established,to_client; file.data; content:"CD001"; offset:32769; depth:5; fast_pattern; content:"CD001"; offset:34817; depth:5; content:"CD001"; offset:36865; depth:5; classtype:misc-activity; sid:2048493; rev:1; metadata:created_at 2023_10_09, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_09, reviewed_at 2023_10_09; target:dest_ip;)