Rule History

SID: 2057879 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 1 • Nov 26, 2024, 12:00 PM

Message:

ET MALWARE Observed Lumma Domain (s1gn1fyh0se .cyou in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lumma Domain (s1gn1fyh0se .cyou in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".s1gn1fyh0se.cyou"; endswith; fast_pattern; classtype:domain-c2; sid:2057879; rev:1; metadata:tls_state TLSEncrypt, created_at 2024_11_26, deployment Perimeter, malware_family lumma, malware_family Lumma_Stealer, performance_impact Low, confidence High, signature_severity Critical, updated_at 2024_11_26, reviewed_at 2025_05_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)

Created:

Nov 26, 2024, 12:00 PM

Updated:

Nov 26, 2024, 12:00 PM

DB Created:

Dec 3, 2024, 4:00 PM

DB Updated:

Dec 3, 2024, 4:00 PM

Filename:

rules/emerging-malware.rules