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

7.0.3 5.0SID: 2071489Rev: 1Enabled4 views

Fileemerging-malware.rules

CreatedAugust 12, 2026

UpdatedAugust 12, 2026

Classificationdomain-c2

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Win32/Lumma Stealer Related CnC Domain in DNS Lookup (smarture .cyou)"; dns.query; bsize:13; content:"smarture.cyou"; fast_pattern; nocase; reference:md5,dc223c3551e52e5a8e5f95b6bc68557f; classtype:domain-c2; sid:2071489; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_08_12, deployment Perimeter, deployment Internal, malware_family Lumma_Stealer, confidence High, signature_severity Major, updated_at 2026_08_12, 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	dc223c3551e52e5a8e5f95b6bc68557f Google Search Brave Search

Metadata

attack targetClient_Endpoint

created at2026_08_12

deploymentInternal

malware familyLumma_Stealer

confidenceHigh

signature severityMajor

updated at2026_08_12

mitre tactic idTA0011

mitre tactic nameCommand_And_Control

mitre technique idT1071

mitre technique nameApplication_Layer_Protocol

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