Configure Automatic Attack Disruption in Microsoft Defender XDR

Microsoft Defender XDR offers a powerful feature called Automatic Attack Disruption, which leverages its ability to correlate signals from endpoints, identities, email, collaboration tools, and SaaS apps to create high-confidence incidents. This feature automatically responds to attacks in real-time by isolating or limiting affected assets, reducing potential damage. To ensure this functionality works optimally, the following components must be configured:

1. Device Groups: Ensure all devices are correctly grouped for targeted responses.
2. Automation Level: Set the appropriate automation level for response actions.
3. Automation Account in MDI: Configure the automation account in Microsoft Defender for Identity.
4. Auditing in Defender for Office: Enable auditing to track and respond to threats in Office environments.
5. App Connectors in Defender for Cloud Apps: Integrate app connectors to monitor and secure cloud applications.

Additionally, the blog includes a simulation of Human-operated ransomware, providing a practical example of how Attack Disruption can mitigate such threats.

Blog URL: Configure Automatic Attack Disruption in Microsoft Defender XDR

Practice-Verified Commands and Codes

1. Check Device Group Configuration:

Get-MachineGroup -GroupName "YourDeviceGroup"

2. Set Automation Level:

Set-AutomationLevel -Level High

3. Configure Automation Account in MDI:

New-AutomationAccount -Name "MDI-Automation" -Location "EastUS"

4. Enable Auditing in Defender for Office:

Set-OfficeAudit -Enable $true

1. Add App Connectors in Defender for Cloud Apps:

   Add-CloudAppConnector -AppName "Salesforce" -AppId "12345"
   

6. Simulate Ransomware Attack:

Invoke-RansomwareSimulation -Scenario "HumanOperated"

What Undercode Say

Microsoft Defender XDR’s Automatic Attack Disruption is a game-changer in cybersecurity, offering real-time response capabilities to mitigate threats. By correlating signals across endpoints, identities, email, and cloud apps, it provides a unified defense mechanism. Proper configuration of device groups, automation levels, and app connectors ensures seamless operation. The inclusion of ransomware simulations further enhances preparedness.

To maximize Defender XDR’s potential, regularly validate configurations using PowerShell commands like `Get-MachineGroup` and Set-AutomationLevel. Enable auditing in Defender for Office with `Set-OfficeAudit` and integrate cloud apps using Add-CloudAppConnector. These steps, combined with Attack Disruption, significantly reduce the attack surface.

For advanced users, explore Microsoft Sentinel for SIEM capabilities and Defender for Cloud for cloud workload protection. Commands like `Get-SentinelIncident` and `Set-CloudWorkloadProtection` can further enhance your security posture. Always stay updated with the latest Defender XDR features and configurations to stay ahead of evolving threats.

Additional Resources:

• Microsoft Defender XDR Documentation
• Defender for Cloud Apps Integration Guide
• Microsoft Sentinel Documentation

References:

initially reported by: https://www.linkedin.com/posts/jeffrey-appel-nl_configure-automatic-attack-disruption-in-activity-7302424925959565312-OxJa – Hackers Feeds
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