MT.1154 - Full Scan Removable Drives should be enabled.
Overview
Verify that full scan of removable drives is enabled to mitigate USB risks.
Disabled removable drive scanning allows USB-based malware infections.
Remediation action:
- Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
- Edit the relevant Microsoft Defender Antivirus policy
- Enable Allow Full Scan on Removable Drives
If your antivirus settings are split across several policies, this setting only needs to be set in one of them, as long as that policy is assigned to every device that needs it. No other assigned policy should set a different value: Intune does not merge this setting, so a device that receives both values may end up with either one, or none.
Related links
- Policy merge and conflicts for Antivirus policy settings
- Configure Microsoft Defender Antivirus
- Microsoft Endpoint Manager
Test Metadata
| Field | Value |
|---|---|
| Test ID | MT.1154 |
| Severity | Medium |
| Suite | Maester |
| Product | Defender |
| Related products | Intune |
| Feature | Endpoint antivirus |
| Area | Devices and endpoints |
| Resource type | Policy |
| User impact | Low |
| Implementation cost | Low |
| MITRE ATT&CK | T1091 Replication Through Removable Media |
| Supports controls | nist-800-53-r5:SI-3 |
| PowerShell test | Test-MtMdeRemovableDriveScanning |
| Services | Graph |
Source
- Test:
tests/maester/defender/Test.MT.1154.ps1 - Documentation:
tests/maester/defender/Test.MT.1154.md