Rule History

SID: 2039546 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Oct 25, 2022, 12:00 PM

Message:

ET MALWARE Cobalt Strike Related Domain in DNS Lookup

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike Related Domain in DNS Lookup"; dns.query; dotprefix; content:".fia-gov.org"; nocase; endswith; reference:url,www.zscaler.com/blogs/security-research/warhawk-new-backdoor-arsenal-sidewinder-apt-group-0; classtype:domain-c2; sid:2039546; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_10_25, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_25;)

Created:

Oct 25, 2022, 12:00 PM

Updated:

Oct 25, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Aug 29, 2025, 8:34 PM

Filename:

rules/emerging-malware.rules