Rule History

SID: 2058071 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Dec 4, 2024, 12:00 PM

Message:

ET MALWARE Observed PeakLight/Emmenhtal Domain (recommends-returned-browser-brave .trycloudflare .com in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed PeakLight/Emmenhtal Domain (recommends-returned-browser-brave .trycloudflare .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".recommends-returned-browser-brave.trycloudflare.com"; endswith; fast_pattern; classtype:trojan-activity; sid:2058071; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_12_04, deployment Perimeter, malware_family PeakLight, malware_family Emmenhtal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_04, reviewed_at 2025_05_14;)

Created:

Dec 4, 2024, 12:00 PM

Updated:

Dec 4, 2024, 12:00 PM

DB Created:

Dec 6, 2024, 12:34 AM

DB Updated:

Jul 7, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules