Rule History

SID: 2048257 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Sep 26, 2023, 12:00 PM

Message:

ET MALWARE Ducktail Malware Related Domain in DNS Lookup (ductai .xyz)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Ducktail Malware Related Domain in DNS Lookup (ductai .xyz)"; dns.query; dotprefix; content:".ductai.xyz"; nocase; endswith; reference:md5,bdab780d4cfc976a87cc13c4f4db7253; classtype:domain-c2; sid:2048257; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_09_26, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29, reviewed_at 2024_04_29; target:src_ip;)

Created:

Sep 26, 2023, 12:00 PM

Updated:

Apr 29, 2024, 12:00 PM

DB Created:

Sep 26, 2023, 9:00 PM

DB Updated:

Aug 18, 2025, 8:35 PM

Filename:

rules/emerging-malware.rules