Versions (3)
Version DetailsCurrent
Rev: 1 • Mar 20, 2024, 12:00 PMET INFO Observed File Sharing Domain (sync .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed File Sharing Domain (sync .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".sync.com"; endswith; fast_pattern; classtype:misc-activity; sid:2051748; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_03_20, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_20;)
Mar 20, 2024, 12:00 PM
Mar 20, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 13, 2025, 9:35 PM
rules/emerging-info.rules