Elastic Security Detection Rules

Delegated Managed Service Account Modification by an Unusual User

Last updated 13 days ago on 2025-05-23
Created 13 days ago on 2025-05-23

About

Detects modifications in the msDS-ManagedAccountPrecededByLink attribute of a delegated managed service account by an unusual subject account. Attackers can abuse this attribute to take over the permission of a target account and inherit it's permissions allowing them to further elevate privileges.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Privilege EscalationUse Case: Active Directory MonitoringData Source: Active DirectoryData Source: Windows Security Event LogsLanguage: kuery
Severity
high
Risk Score
73
MITRE ATT&CK™

Privilege Escalation (TA0004)(opens in a new tab or window)

↳ Valid Accounts (T1078)(opens in a new tab or window)

↳ Account Manipulation (T1098)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
New Terms Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
winlogbeat-*logs-system.security*logs-windows.forwarded*
Related Integrations

system(opens in a new tab or window)

windows(opens in a new tab or window)

Query
event.code:5136 and winlog.event_data.AttributeLDAPDisplayName:"msDS-ManagedAccountPrecededByLink"

Install detection rules in Elastic Security

Detect Delegated Managed Service Account Modification by an Unusual User in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).