ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC)

SID: 2021417Rev: 40 viewsHistory

Sourceet/open

CreatedJuly 15, 2015

UpdatedApril 11, 2024

Classificationcommand-and-control

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Ransomware CnC)"; flow:established,to_client; tls.cert_serial; content:"00:E5:D3:05:EC:6A:A7:12:C5"; fast_pattern; tls.cert_subject; content:"L=Default City"; content:"O=Default Company Ltd"; reference:url,sslbl.abuse.ch; classtype:command-and-control; sid:2021417; rev:4; metadata:attack_target Client_Endpoint, created_at 2015_07_15, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)

References

url	sslbl.abuse.ch

Metadata

attack targetClient_Endpoint

created at2015_07_15

deploymentPerimeter

confidenceHigh

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2024_04_11

mitre tactic idTA0040

mitre tactic nameImpact

mitre technique idT1486

mitre technique nameData_Encrypted_for_Impact

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