Rule History

SID: 2051846 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Mar 28, 2024, 12:00 PM

Message:

ET MALWARE DNS Query to Earth Krahang APT Domain (update .centos-yum .com)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to Earth Krahang APT Domain (update .centos-yum .com)"; dns.query; bsize:21; content:"update.centos-yum.com"; nocase; reference:url,www.trendmicro.com/en_us/research/24/c/earth-krahang.html; classtype:trojan-activity; sid:2051846; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_03_28, deployment Perimeter, deprecation_reason Duplicate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_11;)

Created:

Mar 28, 2024, 12:00 PM

Updated:

Jun 11, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Aug 12, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules