ET MALWARE Malicious Cobalt Strike SSL Certificate (cloudflace-network .digital)

7.0.35.0SID: 2034356Rev: 2Disabled4 views
Sourceet/open
Fileemerging-malware.rules
CreatedNovember 8, 2021
UpdatedMarch 26, 2024
Classificationdomain-c2
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious Cobalt Strike SSL Certificate (cloudflace-network .digital)"; flow:established,to_client; tls.cert_subject; bsize:29; content:"CN=cloudflace-network.digital"; fast_pattern; reference:url,www.cert.ssi.gouv.fr/cti/CERTFR-2021-CTI-009/; classtype:domain-c2; sid:2034356; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_11_08, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26;)

References

urlwww.cert.ssi.gouv.fr/cti/CERTFR-2021-CTI-009/

Metadata

attack targetClient_Endpoint
created at2021_11_08
deploymentPerimeter
malware familyCobalt_Strike
confidenceMedium
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_03_26

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