ET MALWARE Observed Cobalt Strike Related Domain (azurestat .app in TLS SNI)
Sourceet/open
CreatedNovember 10, 2021
UpdatedNovember 10, 2021
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Cobalt Strike Related Domain (azurestat .app in TLS SNI)"; flow:established,to_server; tls.sni; content:"azurestat.app"; bsize:13; fast_pattern; reference:url,www.cert.ssi.gouv.fr/uploads/CERTFR-2021-CTI-009.pdf; classtype:domain-c2; sid:2034400; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_11_10, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_10, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
References
Metadata
attack targetClient_Endpoint
created at2021_11_10
deploymentPerimeter
malware familyCobalt_Strike
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2021_11_10
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol
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