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MediumSplunk security contentTeoderick Contreras +1

Windows Impair Defense Disable Win Defender Report Infection

The following analytic detects modifications to the Windows registry that disable Windows Defender's infection reporting. It leverages data from the Endpoint.Registry datamodel, specifically monitoring changes to the…

Description

The following analytic detects modifications to the Windows registry that disable Windows Defender's infection reporting. It leverages data from the Endpoint.Registry datamodel, specifically monitoring changes to the "DontReportInfectionInformation" registry key. This activity is significant because it can prevent Windows Defender from reporting detailed threat information to Microsoft, potentially allowing malware to evade detection. If confirmed malicious, this action could enable attackers to bypass security measures, maintain persistence, and avoid detection, leading to prolonged unauthorized access and potential data breaches.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
sysmon_eventid_13

Known benign triggers

  • It is unusual to turn this feature off a Windows system since it is a default security control, although it is not rare for some policies to disable it. Although no false positives have been identified, use the provided filter macro to tune the search.

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