Rule History

SID: 2038492 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Aug 11, 2022, 12:00 PM

Message:

ET MALWARE Observed DNS Query to ROMCOM RAT Domain (optasko .com)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to ROMCOM RAT Domain (optasko .com)"; dns.query; dotprefix; content:".optasko.com"; nocase; endswith; reference:url,unit42.paloaltonetworks.com/cuba-ransomware-tropical-scorpius/; classtype:trojan-activity; sid:2038492; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_11, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_11;)

Created:

Aug 11, 2022, 12:00 PM

Updated:

Aug 11, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-malware.rules