Rule History

SID: 2048537 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Oct 11, 2023, 12:00 PM

Message:

ET INFO Observed Pastebin Style Domain in TLS SNI

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Pastebin Style Domain in TLS SNI"; flow:established,to_server; tls.sni; bsize:8; content:"2fa.live"; fast_pattern; reference:md5,bf0a154231ca33db31c420206546cc81; classtype:misc-activity; sid:2048537; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_10_11, deployment Perimeter, confidence High, signature_severity Informational, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_11, reviewed_at 2024_03_11; target:src_ip;)

Created:

Oct 11, 2023, 12:00 PM

Updated:

Oct 11, 2023, 12:00 PM

DB Created:

Oct 11, 2023, 10:00 PM

DB Updated:

Aug 18, 2025, 8:35 PM

Filename:

rules/emerging-info.rules