Rule History

SID: 2039627 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Nov 2, 2022, 12:00 PM

Message:

ET MALWARE Observed DNS Query to Ursnif Domain (astope .xyz)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to Ursnif Domain (astope .xyz)"; dns.query; content:"astope.xyz"; nocase; bsize:10; reference:url,www.mandiant.com/resources/blog/rm3-ldr4-ursnif-banking-fraud; classtype:trojan-activity; sid:2039627; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_11_02, deployment Perimeter, deprecation_reason Age, malware_family ursnif, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_28, reviewed_at 2024_08_28;)

Created:

Nov 2, 2022, 12:00 PM

Updated:

Aug 28, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Aug 28, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules