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About WELA
WELA (Windows Event Log Analyzer, ゑ羅) is a tool for auditing Windows Event Log settings and log file sizes. Windows Event Logs are essential for Digital Forensics and Incident Response (DFIR), offering insights into system activity and security events. However, Default Windows Event Log settings often cause issues—such as small log sizes, weak audit policies, and blind spots in detection—that hinder effective investigations. WELA helps identify these issues and provides actionable recommendations to improve log settings and strengthen security visibility.
Companion Projects
- EnableWindowsLogSettings Yamato Security's Windows Event Log Configuration Guide For DFIR And Threat Hunting.
- EventLog-Baseline-Guide A tool to visualize detection gaps in Sigma rules and major Windows Event Log configuration guides.
- WELA-RulesGenerator A tool for generating WELA's Sigma rule-related config files.
Table of Contents
- About WELA
- Companion Projects
- Table of Contents
- Screenshots
- Features
- Downloads
- Command List
- Contribution
- Bug Submission
- License
- Contributors
- Acknowledgements
Screenshots
Startup
audit-settings (stdout)
audit-settings (gui)
audit-settings (table)
audit-filesize
Features
- Audit Windows Event Log settings: Check the current settings of Windows Event Logs and compare them with recommended settings.
- Checking Windows Event Log audit settings based on real-world Sigma rule detectability.
- Audit Windows Event Log file sizes: Check the current file sizes of Windows Event Logs and compare them with recommended settings.
Prerequisites
- PowerShell 5.1+
- Run PowerShell with Administrator privileges
Downloads
Please download the latest stable version of WELA from the Releases page.
Running WELA
- Unzip the release zip file.
- Open PowerShell with Administrator privileges.
./WELA.ps1 helpto run WELA.
Command Usage
audit-settings
audit-filesize
update-rules
Other Windows Event Log Audit Related Resources
- Audit Policy Recommendations
- Windows event logging and forwarding
- A Data-Driven Approach to Windows Advanced Audit Policy – What to Enable and Why
Contribution
We would love any form of contribution. Pull requests, rule creation and sample logs are the best, but feature requests notifying us of bugs, etc... are also very welcome.
At the least, if you like our tools and resources, then please give us a star on GitHub and show your support!
Bug Submission
- Please submit any bugs you find here.
- This project is currently actively maintained, and we are happy to fix any bugs reported.
License
- WELA is released under MIT License
Contributors
- Fukusuke Takahashi (core developer)
- Zach Mathis (project leader, tool design, testing, etc...) (@yamatosecurity)
You can receive the latest news about WELA, rule updates, other Yamato Security tools, etc... by following us on Twitter at @SecurityYamato.