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Windows Computer Account Changed to Domain Controller

Detects a modification to the User Account Control flags for a computer account where the `SERVER_TRUST_ACCOUNT` flag is set. This flag is normally associated with domain controller computer accounts. This activity…

Description

Detects a modification to the User Account Control flags for a computer account where the `SERVER_TRUST_ACCOUNT` flag is set. This flag is normally associated with domain controller computer accounts. This activity may indicate a legitimate domain controller promotion or, if unexpected, an attempt to grant a computer account domain controller-like trust within Active Directory.

Detection logic

Detection requirements

Platform
LinuxmacOSWindows

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

Known benign triggers

  • Some legitimate administrative activities during domain controller promotions or system updates may trigger this rule. Filter alerts originating from authorized IT personnel or approved change management processes.

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