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SID: 2050075 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1Jan 16, 2024, 12:00 PM

ET INFO Observed File Sharing Service Domain (drive .filen .io in TLS SNI)

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed File Sharing Service Domain (drive .filen .io in TLS SNI)"; flow:established,to_server; tls.sni; bsize:14; content:"drive.filen.io"; fast_pattern; classtype:bad-unknown; sid:2050075; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_01_16, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_16; target:src_ip;)

Jan 16, 2024, 12:00 PM

Jan 16, 2024, 12:00 PM

Sep 21, 2024, 3:00 AM

Aug 15, 2025, 8:34 PM

rules/emerging-info.rules