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26 lines
1.0 KiB
YAML
26 lines
1.0 KiB
YAML
title: Suspicious Export-PfxCertificate
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id: aa7a3fce-bef5-4311-9cc1-5f04bb8c308c
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status: experimental
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description: Detects Commandlet that is used to export certificates from the local certificate store and sometimes used by threat actors to steal provate keys from compromised machines
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references:
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- https://us-cert.cisa.gov/ncas/analysis-reports/ar21-112a
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- https://docs.microsoft.com/en-us/powershell/module/pki/export-pfxcertificate
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tags:
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- attack.credential_access
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- attack.t1552.004
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author: Florian Roth
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date: 2021/04/23
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logsource:
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product: windows
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service: powershell
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definition: 'It is recommended to use the new "Script Block Logging" of PowerShell v5 https://adsecurity.org/?p=2277'
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detection:
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keywords:
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EventID: 4104
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ScriptBlockText|contains:
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- "Export-PfxCertificate"
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condition: keywords
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falsepositives:
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- Legitimate certificate exports invoked by administrators or users (depends on processes in the environment - filter if unusable)
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level: high
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