Rule History

SID: 2044383 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Feb 28, 2023, 12:00 PM

Message:

ET MALWARE Observed Donot Group APT Domain (briefdeal .buzz in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Donot Group APT Domain (briefdeal .buzz in TLS SNI)"; flow:established,to_server; tls.sni; content:"briefdeal.buzz"; bsize:14; fast_pattern; reference:md5,4eaa63dd65fc699260306c743b46303b; classtype:trojan-activity; sid:2044383; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)

Created:

Feb 28, 2023, 12:00 PM

Updated:

Mar 30, 2023, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Aug 25, 2025, 9:35 PM

Filename:

rules/emerging-malware.rules