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Essential Strategies for Detecting VBScript Usage in Windows Environments Before Deprecation

by ailona•

*As VBScript enters its deprecation phase, organizations must proactively identify its usage. This blog outlines strategies to detect vbscript.dll across Windows environments using Sysmon for monitoring, reviewing dependencies in Group Policy and scheduled tasks, scanning for .vbs files, and examining custom MSI packages. Preparing for VBScript removal is essential for a smooth transition.**:**

VBScript Deprecation: What You Need to Know

As Microsoft gears up for the next phase of VBScript deprecation, it’s crucial for organizations to adapt. The Visual Basic Scripting Edition (VBScript) is now a feature on demand (FOD) in Windows 11, version 24H Before VBScript is disabled by default, identifying its usage is essential.

What’s New in VBScript Detection

The current phase emphasizes the need for detection strategies. Organizations must pinpoint where vbscript.dll is still in use. This proactive approach will help mitigate risks associated with the upcoming deprecation.

“Start detecting Visual Basic Scripting Edition (VBScript) across your organization in preparation for the next deprecation phase.”

Major Updates: Detection Strategies

Here are four scalable strategies to detect VBScript usage:

Use Sysmon for Monitoring

Sysmon can track vbscript.dll loads across your enterprise. However, be cautious; it may introduce performance overhead. Test it on a small group before a broad rollout.

Review VBScript Dependencies

VBScript can be embedded in Group Policy scripts, scheduled tasks, and PowerShell scripts. Identifying these dependencies is crucial for remediation.

3. Scan for .vbs Files

Proactively search for .vbs files on endpoints. Focus on common paths like C:\Users and C:\ProgramData. Avoid broad scans to prevent performance issues.

4. Inspect Custom MSI Packages

Custom Microsoft Installer (MSI) packages may contain embedded VBScript. Use PowerShell to scan these packages and flag any legacy usage.

Important Tips for Implementation

When deploying Sysmon, configure it with a minimal rule set targeting .dll loads. Collect logs for Event ID 7 to identify processes loading vbscript.dll.

“You can then use standard tools like Power BI, Microsoft Excel, or custom scripts to analyze these Sysmon logs.”

Combining Sysmon logs with IIS logs can enhance traceability, especially in web-hosted environments. This correlation helps clarify which HTTP requests trigger VBScript execution.

Conclusion

As VBScript faces deprecation, organizations must act swiftly. Implementing these detection strategies will prepare your enterprise for a smoother transition. Stay ahead of the curve and ensure your systems are modernized.

  • VBScript is currently a feature on demand in Windows 11, version 24H
  • Sysmon can be used to monitor and analyze vbscript.dll loads across all Windows platforms.
  • Detection strategies include reviewing Group Policy scripts and scheduled tasks for VBScript dependencies.
  • Scanning for .vbs files helps identify legacy scripts not tied to scheduled tasks or GPOs.
  • Custom MSI packages may contain embedded VBScript, requiring inspection during modernization efforts.

    • From the Windows IT Pro Blog articles