Rule History

SID: 2021936 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 4 • Oct 8, 2015, 12:00 PM

Message:

ET MALWARE Possible PlugX DNS Lookup (operaa.net)

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Possible PlugX DNS Lookup (operaa.net)"; dns_query; content:"operaa.net"; depth:10; nocase; endswith; fast_pattern; reference:url,volexity.com/blog/?p=179; classtype:trojan-activity; sid:2021936; rev:4; metadata:created_at 2015_10_08, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_09_28;)

Created:

Oct 8, 2015, 12:00 PM

Updated:

Sep 28, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Jan 12, 2026, 10:34 PM

Filename:

rules/emerging-malware.rules