ET MALWARE Observed Win32/Lumma Stealer Related Domain (accsrf .top in TLS SNI)

SID: 2063943Rev: 11 views
Sourceet/open
CreatedAugust 7, 2025
UpdatedAugust 7, 2025
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Win32/Lumma Stealer Related Domain (accsrf .top in TLS SNI)"; flow:established,to_server; tls.sni; bsize:10; content:"accsrf.top"; fast_pattern; reference:url,www.proofpoint.com/us/blog/threat-insight/threat-actors-deliver-malware-youtube-video-game-cracks; classtype:domain-c2; sid:2063943; rev:1; metadata:tls_state TLSEncrypt, created_at 2025_08_07, deployment Perimeter, malware_family Lumma_Stealer, confidence High, signature_severity Critical, updated_at 2025_08_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)

References

urlwww.proofpoint.com/us/blog/threat-insight/threat-actors-deliver-malware-youtube-video-game-cracks

Metadata

tls stateTLSEncrypt
created at2025_08_07
deploymentPerimeter
malware familyLumma_Stealer
confidenceHigh
signature severityCritical
updated at2025_08_07
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol

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