Disable Exploit Guard Network Protection on Windows Defender

Hunt Hypothesis

Detects disabling Windows Defender Exploit Guard Network Protection

Detection Rule

Sigma (Original)

title: Disable Exploit Guard Network Protection on Windows Defender
id: bf9e1387-b040-4393-9851-1598f8ecfae9
status: test
description: Detects disabling Windows Defender Exploit Guard Network Protection
references:
    - https://www.tenforums.com/tutorials/105533-enable-disable-windows-defender-exploit-protection-settings.html
author: Austin Songer @austinsonger
date: 2021-08-04
modified: 2023-08-17
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: 'SOFTWARE\Policies\Microsoft\Windows Defender Security Center\App and Browser protection\DisallowExploitProtectionOverride'
        Details: 'DWORD (00000001)'
    condition: selection
falsepositives:
    - Unknown
level: medium

KQL (Azure Sentinel)

imRegistry
| where RegistryKey contains "SOFTWARE\\Policies\\Microsoft\\Windows Defender Security Center\\App and Browser protection\\DisallowExploitProtectionOverride" and RegistryValueData =~ "DWORD (00000001)"

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where RegistryKey contains "SOFTWARE\\Policies\\Microsoft\\Windows Defender Security Center\\App and Browser protection\\DisallowExploitProtectionOverride" and RegistryValueData =~ "DWORD (00000001)"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Technique: T1685 — T1685

References

• https://www.tenforums.com/tutorials/105533-enable-disable-windows-defender-exploit-protection-settings.html
• SigmaHQ Rule