mirror of
https://github.com/Yamato-Security/WELA.git
synced 2025-12-06 09:12:46 +01:00
189 lines
8.9 KiB
Markdown
189 lines
8.9 KiB
Markdown
<div align="center">
|
||
<p>
|
||
<img alt="WELA Logo" src="screenshots/WELA-Logo.png" width="20%">
|
||
<h1>
|
||
WELA (Windows Event Log Auditor) ゑ羅
|
||
</h1>
|
||
<div align="center">
|
||
[ <b>English</b> ] | [<a href="README-Japanese.md">日本語</a>]
|
||
</div>
|
||
</p>
|
||
</div>
|
||
|
||
---
|
||
|
||
<p align="center">
|
||
<a href="https://conference.auscert.org.au/speaker/fukusuke-takahashi/"><img src="https://img.shields.io/badge/AUSCERT-2025-blue"></a>
|
||
<a href="https://www.infosec-city.com/sin-25"><img src="https://img.shields.io/badge/SINCON-2025-blue"></a>
|
||
<a href="https://github.com/Yamato-Security/wela/commits/main/"><img src="https://img.shields.io/github/commit-activity/t/Yamato-Security/wela/main" /></a>
|
||
<a href="https://twitter.com/SecurityYamato"><img src="https://img.shields.io/twitter/follow/SecurityYamato?style=social"/></a>
|
||
</p>
|
||
|
||
|
||
# About WELA
|
||
**WELA (Windows Event Log Analyzer, ゑ羅)** is a tool for auditing Windows event log settings.
|
||
Windows event logs are a vital source of information for Digital Forensics and Incident Response (DFIR), providing visibility into system activity and security events.
|
||
**Unfortunately, default configurations often lead to problems such as limited log retention, insufficient audit policies, and blind spots that reduce detection capability**.
|
||
WELA helps uncover these weaknesses and offers practical recommendations to improve audit settings and enhance security visibility.
|
||
WELA also assesses log configurations **based on real-world Sigma rule coverage**, allowing users to evaluate what can or cannot be detected under current the settings.
|
||
|
||
|
||
# Companion Projects
|
||
|
||
* [EnableWindowsLogSettings](https://github.com/Yamato-Security/EnableWindowsLogSettings): Yamato Security's Windows Event Log Configuration Guide.
|
||
* [EventLog-Baseline-Guide](https://github.com/Yamato-Security/EventLog-Baseline-Guide): A tool to visualize detection gaps in Sigma rules and major guides.
|
||
* [WELA-RulesGenerator](https://github.com/Yamato-Security/WELA-RulesGenerator): A tool for generating WELA's Sigma rule-related config files.
|
||
|
||
# Table of Contents
|
||
|
||
- [About WELA](#about-wela)
|
||
- [Companion Projects](#companion-projects)
|
||
- [Table of Contents](#table-of-contents)
|
||
- [Screenshots](#screenshots)
|
||
- [Startup Help Menu](#startup-help-menu)
|
||
- [audit-settings (terminal output)](#audit-settings-terminal-output)
|
||
- [audit-settings (GUI)](#audit-settings-gui)
|
||
- [audit-settings (table)](#audit-settings-table)
|
||
- [audit-filesize](#audit-filesize)
|
||
- [Features](#features)
|
||
- [Prerequisites](#prerequisites)
|
||
- [Downloads](#downloads)
|
||
- [Running WELA](#running-wela)
|
||
- [Command List](#command-list)
|
||
- [Command Usage](#command-usage)
|
||
- [audit-settings](#audit-settings)
|
||
- [`audit-settings` command examples](#audit-settings-command-examples)
|
||
- [audit-filesize](#audit-filesize-1)
|
||
- [`audit-filesize` command examples](#audit-filesize-command-examples)
|
||
- [update-rules](#update-rules)
|
||
- [`update-rules` command examples](#update-rules-command-examples)
|
||
- [Other Windows Event Log Audit Settings Related Resources](#other-windows-event-log-audit-settings-related-resources)
|
||
- [Contributions](#contributions)
|
||
- [Bug Submission](#bug-submission)
|
||
- [License](#license)
|
||
- [Contributors](#contributors)
|
||
- [Acknowledgements](#acknowledgements)
|
||
- [Twitter](#twitter)
|
||
|
||
# Screenshots
|
||
|
||
## Startup Help Menu
|
||
|
||
|
||
## audit-settings (terminal output)
|
||
|
||
## audit-settings (GUI)
|
||
|
||
|
||
## audit-settings (table)
|
||
|
||
|
||
## audit-filesize
|
||
|
||
|
||
# Features
|
||
- Auditing Windows event log audit policy settings.
|
||
- Checking **based on the major Windows event log audit configuration guidelines**.
|
||
- Checking Windows event log audit settings based on **real-world Sigma rule detectability**.
|
||
- Auditing of Windows event log file sizes and suggestions for the recommended size.
|
||
|
||
# Prerequisites
|
||
* Windows PowerShell 5.1 or PowerShell Core
|
||
* Running PowerShell with Administrator privileges
|
||
|
||
# Downloads
|
||
|
||
Please download the latest stable version of WELA from the [Releases](https://github.com/Yamato-Security/wela/releases) page.
|
||
|
||
# Running WELA
|
||
1. Unzip the [release zip file](https://github.com/Yamato-Security/wela/releases).
|
||
2. Open PowerShell with **Administrator privileges**.
|
||
3. `./WELA.ps1 help` to run WELA and see the help usage.
|
||
|
||
# Command List
|
||
- `audit-settings`: Check Windows event log audit policy settings.
|
||
- `audit-filesize`: Check Windows event log file size.
|
||
- `update-rules`: Update WELA's Sigma rules config files.
|
||
|
||
# Command Usage
|
||
## audit-settings
|
||
The `audit-settings` command checks the Windows event log audit policy settings and compares them with the recommended settings from [Yamato Security](https://github.com/Yamato-Security/EnableWindowsLogSettings), [Microsoft(Sever/Client)](https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/security-best-practices/audit-policy-recommendations), and [Australian Signals Directorate (ASD)](https://www.cyber.gov.au/resources-business-and-government/maintaining-devices-and-systems/system-hardening-and-administration/system-monitoring/windows-event-logging-and-forwarding).
|
||
`RuleCount` indicates the number of [Sigma rules](https://github.com/SigmaHQ/sigma) that can detect events within that category.
|
||
|
||
### `audit-settings` command examples
|
||
Check with the default Yamato Security's recommended settings and save results to CSV:
|
||
```
|
||
./WELA.ps1 audit-settings
|
||
```
|
||
|
||
Check with the Australian Signals Directorate's recommended settings and save results to CSV:
|
||
```
|
||
./WELA.ps1 audit-settings -BaseLine ASD
|
||
```
|
||
|
||
Check with Microsoft's recommended Server OS settings and display results in a GUI:
|
||
```
|
||
./WELA.ps1 audit-settings -BaseLine Microsoft_Server -OutType gui
|
||
```
|
||
|
||
Check with Microsoft's recommended Client OS settings and display results in table format:
|
||
```
|
||
./WELA.ps1 audit-settings -BaseLine Microsoft_Client -OutType table
|
||
```
|
||
|
||
## audit-filesize
|
||
The `audit-filesize` command checks the Windows event logs' file size and compares them with the recommended settings from Yamato Security's recommendations.
|
||
|
||
### `audit-filesize` command examples
|
||
Check the Windows event log file size with Yamato Security's recommendations and save results to CSV:
|
||
```
|
||
./WELA.ps1 audit-filesize
|
||
```
|
||
|
||
## update-rules
|
||
#### `update-rules` command examples
|
||
Update WELA's Sigma rules config files:
|
||
```
|
||
./WELA.ps1 update-rules
|
||
```
|
||
|
||
# Other Windows Event Log Audit Settings Related Resources
|
||
|
||
* [A Data-Driven Approach to Windows Advanced Audit Policy – What to Enable and Why](https://www.splunk.com/en_us/blog/security/windows-audit-policy-guide.html)
|
||
* [Audit Policy Recommendations](https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/security-best-practices/audit-policy-recommendations)
|
||
* [Configure audit policies for Windows event logs](https://learn.microsoft.com/en-us/defender-for-identity/deploy/configure-windows-event-collection)
|
||
* [EnableWindowsLogSettings](https://github.com/Yamato-Security/EnableWindowsLogSettings)
|
||
* [Windows event logging and forwarding](https://www.cyber.gov.au/resources-business-and-government/maintaining-devices-and-systems/system-hardening-and-administration/system-monitoring/windows-event-logging-and-forwarding)
|
||
* [mdecrevoisier/Windows-auditing-baseline](https://github.com/mdecrevoisier/Windows-auditing-baseline)
|
||
* [palantir/windows-event-forwarding](https://github.com/palantir/windows-event-forwarding/tree/master/group-policy-objects)
|
||
|
||
# Contributions
|
||
|
||
We would love any form of contribution.
|
||
Pull requests are the best, but feature requests notifying us of bugs, etc... through issues 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.](https://github.com/Yamato-Security/wela/issues/new?assignees=&labels=bug&template=bug_report.md&title=%5Bbug%5D)
|
||
* This project is currently actively maintained, and we are happy to fix any bugs reported.
|
||
|
||
# License
|
||
|
||
* WELA is released under the [MIT License](https://opensource.org/licenses/MIT).
|
||
|
||
# Contributors
|
||
|
||
* Fukusuke Takahashi (core developer)
|
||
* Zach Mathis (project leader, tool design, testing, etc...) (@yamatosecurity)
|
||
|
||
# Acknowledgements
|
||
|
||
* [Australian Cyber Security Centre: Windows event logging and forwarding](https://www.cyber.gov.au/resources-business-and-government/maintaining-devices-and-systems/system-hardening-and-administration/system-monitoring/windows-event-logging-and-forwarding)
|
||
* [Microsoft: Advanced security auditing FAQ](https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/advanced-security-auditing-faq)
|
||
* [SigmaHQ](https://github.com/SigmaHQ/sigma)
|
||
|
||
# Twitter
|
||
|
||
You can receive the latest news about WELA, rule updates, other Yamato Security tools, etc... by following us on Twitter at [@SecurityYamato](https://twitter.com/SecurityYamato). |