Rule History

SID: 2036311 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Apr 22, 2022, 12:00 PM

Message:

ET INFO Commonly Abused File Sharing Domain (filetransfer .io in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Commonly Abused File Sharing Domain (filetransfer .io in TLS SNI)"; flow:established,to_server; tls.sni; content:"filetransfer.io"; bsize:15; fast_pattern; classtype:bad-unknown; sid:2036311; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_04_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_22;)

Created:

Apr 22, 2022, 12:00 PM

Updated:

Apr 22, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 3, 2025, 8:34 PM

Filename:

rules/emerging-info.rules