ET MALWARE Observed Targeted Attack Malicious Domain in TLS SNI (krakenfolio .com)

SID: 2031551Rev: 10 views
History
Sourceet/open
CreatedJanuary 26, 2021
UpdatedJanuary 26, 2021
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Targeted Attack Malicious Domain in TLS SNI (krakenfolio .com)"; flow:established,to_server; tls.sni; content:"krakenfolio.com"; bsize:15; fast_pattern; reference:url,blog.google/threat-analysis-group/new-campaign-targeting-security-researchers/; classtype:domain-c2; sid:2031551; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_01_26, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_01_26, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)

References

urlblog.google/threat-analysis-group/new-campaign-targeting-security-researchers/

Metadata

attack targetClient_Endpoint
created at2021_01_26
deploymentPerimeter
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2021_01_26
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol

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