Rule History

SID: 2055768 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Sep 6, 2024, 12:00 PM

Message:

ET HUNTING Suspicious SSL/TLS Certificate Observed (L=Sprinal-ield)

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Suspicious SSL/TLS Certificate Observed (L=Sprinal-ield)"; flow:established,to_client; tls.cert_subject; content:"C=US, ST=Denial, L=Sprinal-ield, O=Dis"; fast_pattern; classtype:domain-c2; sid:2055768; rev:1; metadata:attack_target Client_and_Server, created_at 2024_09_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_06;)

Created:

Sep 6, 2024, 12:00 PM

Updated:

Sep 6, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Jul 28, 2025, 9:34 PM

Filename:

rules/emerging-hunting.rules