ET MALWARE Win32/Lumma Stealer Related CnC Domain in DNS Lookup (grzpoint .cyou)

7.0.35.0SID: 2071778Rev: 1Enabled5 views
Sourceet/open
Fileemerging-malware.rules
CreatedAugust 24, 2026
UpdatedAugust 24, 2026
Classificationdomain-c2
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Win32/Lumma Stealer Related CnC Domain in DNS Lookup (grzpoint .cyou)"; dns.query; bsize:13; content:"grzpoint.cyou"; fast_pattern; nocase; reference:md5,a1f4a0cb963a43f917562d046347f9fb; classtype:domain-c2; sid:2071778; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_08_24, deployment Perimeter, deployment Internal, malware_family Lumma_Stealer, confidence High, signature_severity Major, updated_at 2026_08_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)

References

md5
a1f4a0cb963a43f917562d046347f9fb
Google SearchBrave Search

Metadata

attack targetClient_Endpoint
created at2026_08_24
deploymentInternal
malware familyLumma_Stealer
confidenceHigh
signature severityMajor
updated at2026_08_24
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol

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