31 lines
1.1 KiB
YAML
31 lines
1.1 KiB
YAML
title: Suspicious Export-PfxCertificate
|
|
author: Florian Roth
|
|
date: 2021/04/23
|
|
description: Detects Commandlet that is used to export certificates from the local
|
|
certificate store and sometimes used by threat actors to steal private keys from
|
|
compromised machines
|
|
detection:
|
|
SELECTION_1:
|
|
ScriptBlockText: '*Export-PfxCertificate*'
|
|
condition: SELECTION_1
|
|
falsepositives:
|
|
- Legitimate certificate exports invoked by administrators or users (depends on processes
|
|
in the environment - filter if unusable)
|
|
id: aa7a3fce-bef5-4311-9cc1-5f04bb8c308c
|
|
level: high
|
|
logsource:
|
|
category: ps_script
|
|
definition: Script Block Logging must be enable
|
|
product: windows
|
|
modified: 2021/08/04
|
|
references:
|
|
- https://us-cert.cisa.gov/ncas/analysis-reports/ar21-112a
|
|
- https://docs.microsoft.com/en-us/powershell/module/pki/export-pfxcertificate
|
|
status: experimental
|
|
tags:
|
|
- attack.credential_access
|
|
- attack.t1552.004
|
|
yml_filename: powershell_suspicious_export_pfxcertificate.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/powershell/powershell_script
|
|
|