Rule History

SID: 2061044 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 1 • Mar 25, 2025, 12:00 PM

Message:

ET INFO Observed External IP Lookup Domain Domain (api .country .is in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain Domain (api .country .is in TLS SNI)"; flow:established,to_server; tls.sni; bsize:14; content:"api.country.is"; fast_pattern; classtype:external-ip-check; sid:2061044; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_03_25, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_25;)

Created:

Mar 25, 2025, 12:00 PM

Updated:

Mar 25, 2025, 12:00 PM

DB Created:

Mar 25, 2025, 10:34 PM

DB Updated:

Jul 3, 2025, 8:34 PM

Filename:

rules/emerging-info.rules