Disable or Modify Tools × Microsoft Defender Antivirus

enumerate exclusions from Windows Defender operational logs without administrative privileges

Attackers enumerate configured exclusions (paths, processes, extensions) via PowerShell cmdlets (admin required) or by parsing Windows Defender operational logs (standard user readable). Once exclusions are known, malware or tools are placed in excluded folders, executed as excluded processes, or use excluded extensions to avoid scanning. This defeats real-time protection and on-demand scans by exploiting the trust model of exclusions.

Monitor Windows Defender operational logs (Event ID 5007) for exclusion modifications and regularly review configured exclusions for anomalies. Implement alerting on suspicious processes executing from or writing to excluded paths, and enforce strict change control on exclusion lists.