Sigma rule: Potential Delegated Managed Service Account (dMSA) Enumeration on Windows System

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-ebdb2b8eb3cf, updated 2026-10-19T00:00:00.000Z.

Rule

Title: Potential Delegated Managed Service Account (dMSA) Enumeration on Windows System
Status: experimental
Level: medium
Author: Panos Gkatziroulis, Swachchhanda Shrawan Poudel (Nextron Systems)
Date: 2026-10-19
File: rules-placeholder/windows/builtin/security/win_security_dmsa_enumeration.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects read operations performed on an Active Directory object of type msDS-DelegatedManagedServiceAccount (GUID 0feb936f-47b3-49f2-9386-1dedc2c23765), which is used for delegated Managed Service Accounts.
Such access may indicate an attempt to gather information and leverage it for attacks like GoldendMSA.

Log source

product: windows
service: security
definition: Requirements: Audit Directory Service Access auditing should be enabled. Auditing should be enabled for the organizational unit that contains the dMSAs for Authenticated Users.

Detection

selection:
    # This rule should be applied after initial baselining according your environment.
    EventID: 4662
    ObjectType|contains: '0feb936f-47b3-49f2-9386-1dedc2c23765'
    AccessMask:
        - '0x100'
        - '0x10'
filter:
    # Look for an account name that is not a DC
    SubjectUserName|expand: '%Domain_Controller%'
condition: selection and not filter

False positives (as the rule lists them)

Legitimate administrative activities

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-placeholder/windows/builtin/security/win_security_dmsa_enumeration.yml

Sources and licences

SigmaHQ
"Potential Delegated Managed Service Account (dMSA) Enumeration on Windows System" by Panos Gkatziroulis, Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-placeholder/windows/builtin/security/win_security_dmsa_enumeration.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Potential Delegated Managed Service Account (dMSA) Enumeration on Windows System",
entity page, dataset version ref-ebdb2b8eb3cf, updated 2026-10-19T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/54f3cf8f-f577-46d9-b609-2029554e975d (accessed 2026-11-03).
Underlying source: SigmaHQ rule 54f3cf8f-f577-46d9-b609-2029554e975d, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.