Sigma rule: Windows Defender Configuration Changes

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d66d8bd37b2e, updated 2023-11-24T00:00:00.000Z.

Rule

Title: Windows Defender Configuration Changes
Status: stable
Level: high
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2022-12-06
Modified: 2023-11-24
File: rules/windows/builtin/windefend/win_defender_suspicious_features_tampering.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious changes to the Windows Defender configuration

Log source

product: windows
service: windefend

Detection

selection:
    EventID: 5007 # The antimalware platform configuration changed.
    NewValue|contains:
        # TODO: Add more suspicious values
        - '\Windows Defender\DisableAntiSpyware '
        # - '\Windows Defender\Features\TamperProtection ' # Might produce FP
        - '\Windows Defender\Scan\DisableRemovableDriveScanning '
        - '\Windows Defender\Scan\DisableScanningMappedNetworkDrivesForFullScan '
        - '\Windows Defender\SpyNet\DisableBlockAtFirstSeen '
        - '\Real-Time Protection\SpyNetReporting '
        # Exclusions changes are covered in 1321dc4e-a1fe-481d-a016-52c45f0c8b4f
        # Exploit guard changes are covered in a3ab73f1-bd46-4319-8f06-4b20d0617886
condition: selection

False positives (as the rule lists them)

Administrator activity (must be investigated)

MITRE ATT&CK ids this rule names

T1685

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/windefend/win_defender_suspicious_features_tampering.yml

Sources and licences

SigmaHQ
"Windows Defender Configuration Changes" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/windefend/win_defender_suspicious_features_tampering.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Windows Defender Configuration Changes",
entity page, dataset version ref-d66d8bd37b2e, updated 2023-11-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/801bd44f-ceed-4eb6-887c-11544633c0aa (accessed 2026-11-03).
Underlying source: SigmaHQ rule 801bd44f-ceed-4eb6-887c-11544633c0aa, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.