Phoenix Studio

Convert indexed Sigma rules into analyst-ready detections.

This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a live sigma-cli backend, then reveal pipelines only when you actually need them.

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Indexed Rules

3,707

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Backends

Live from sigconverter.io

CLI Versions

Newest: 2.0.2

Translation Workspace

Shape the rule before it leaves Phoenix

Tune Translation

Active Rule

Certificate Exported Via PowerShell - ScriptBlock

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Certificate Exported Via PowerShell - ScriptBlock

Using Splunk · Default · sigma-cli 2.0.2

Translation controls

Adjust the rule on the left, then regenerate when you want a fresh backend-native query.

BackendSplunkFormatDefaultVersion2.0.2

title: Certificate Exported Via PowerShell - ScriptBlock
id: aa7a3fce-bef5-4311-9cc1-5f04bb8c308c
related:
    - id: 9e716b33-63b2-46da-86a4-bd3c3b9b5dfb
      type: similar
status: test
description: Detects calls to cmdlets inside of PowerShell scripts that are used to export certificates from the local certificate store. Threat actors were seen abusing this to steal private keys from compromised machines.
references:
    - https://us-cert.cisa.gov/ncas/analysis-reports/ar21-112a
    - https://learn.microsoft.com/en-us/powershell/module/pki/export-pfxcertificate?view=windowsserver2022-ps
    - https://www.splunk.com/en_us/blog/security/breaking-the-chain-defending-against-certificate-services-abuse.html
author: Florian Roth (Nextron Systems)
date: 2021-04-23
modified: 2023-05-18
tags:
    - attack.credential-access
    - attack.t1552.004
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Export-PfxCertificate'
            - 'Export-Certificate'
    filter_optional_module_export:
        ScriptBlockText|contains: 'CmdletsToExport = @('
    condition: selection and not 1 of filter_optional_*
falsepositives:
    - Legitimate certificate exports by administrators. Additional filters might be required.
level: medium

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules/windows/powershell/powershell_script/posh_ps_export_certificate.yml