Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
3,707
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Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
PowerShell Write-EventLog Usage
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
PowerShell Write-EventLog Usage
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: PowerShell Write-EventLog Usage
id: 35f41cd7-c98e-469f-8a02-ec4ba0cc7a7e
status: test
description: Detects usage of the "Write-EventLog" cmdlet with 'RawData' flag. The cmdlet can be levreage to write malicious payloads to the EventLog and then retrieve them later for later use
references:
- https://www.blackhillsinfosec.com/windows-event-logs-for-red-teams/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-16
tags:
- attack.defense-evasion
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
ScriptBlockText|contains|all:
- 'Write-EventLog'
- '-RawData '
condition: selection
falsepositives:
- Legitimate applications writing events via this cmdlet. Investigate alerts to determine if the action is benign
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_susp_write_eventlog.yml