Windows Defender Real-Time Protection Failure/Restart — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems), Christopher Peacock '@securepeacock' (Update). Source status: stable; severity: medium. Source dates: 2023-03-28 / 2023-05-05.

{
  "product": "windows",
  "service": "windefend"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 4f31c5f6464835306ebea9929083e9334dc80e4b243d4ce007e3bf55c4e1348b

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Windows Defender Real-Time Protection Failure/Restart
id: dd80db93-6ec2-4f4c-a017-ad40da6ffe81
status: stable
description: Detects issues with Windows Defender Real-Time Protection features
references:
    - Internal Research
    - https://www.microsoft.com/en-us/security/blog/2023/04/11/guidance-for-investigating-attacks-using-cve-2022-21894-the-blacklotus-campaign/
    - https://gist.github.com/nasbench/33732d6705cbdc712fae356f07666346 # Contains the list of Feature Names (use for filtering purposes)
author: Nasreddine Bencherchali (Nextron Systems), Christopher Peacock '@securepeacock' (Update)
date: 2023-03-28
modified: 2023-05-05
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    service: windefend
detection:
    selection:
        EventID:
            - 3002 # Real-Time Protection feature has encountered an error and failed
            - 3007 # Real-time Protection feature has restarted
    filter_optional_network_inspection:
        Feature_Name: '%%886' # Network Inspection System
        Reason:
            - '%%892' # The system is missing updates that are required for running Network Inspection System.  Install the required updates and restart the device.
            - '%%858' # Antimalware security intelligence has stopped functioning for an unknown reason. In some instances, restarting the service may resolve the problem.
    condition: selection and not 1 of filter_optional_*
falsepositives:
    - Some crashes can occur sometimes and the event doesn't provide enough information to tune out these cases. Manual exception is required
level: medium

Original YAML and metadata in JSON

False positives

• Some crashes can occur sometimes and the event doesn't provide enough information to tune out these cases. Manual exception is required

Source references

• Internal Research (source note; no public URL supplied)
• https://www.microsoft.com/en-us/security/blog/2023/04/11/guidance-for-investigating-attacks-using-cve-2022-21894-the-blacklotus-campaign/
• https://gist.github.com/nasbench/33732d6705cbdc712fae356f07666346