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MediumSplunk security contentTeoderick Contreras +1Threat hunting

Windows Modify Registry USeWuServer

The following analytic detects a suspicious modification to the Windows Update configuration registry key "UseWUServer." It leverages data from the Endpoint.Registry data model to identify changes where the registry…

Description

The following analytic detects a suspicious modification to the Windows Update configuration registry key "UseWUServer." It leverages data from the Endpoint.Registry data model to identify changes where the registry value is set to "0x00000001." This activity is significant because it is commonly used by adversaries, including malware like RedLine Stealer, to bypass detection mechanisms and potentially exploit zero-day vulnerabilities. If confirmed malicious, this modification could allow attackers to evade defenses, persist on the target host, and deploy additional malicious payloads.

Detection logic

Detection requirements

Platform
Windows

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

  • administrators may enable or disable this feature that may cause some false positive.

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