Elastic Security Detection Rules

Potential Credential Access via DCSync

Last updated 21 days ago on 2025-09-11
Created 4 years ago on 2022-02-08

About

This rule identifies when a User Account starts the Active Directory Replication Process. Attackers can use the DCSync technique to get credential information of individual accounts or the entire domain, thus compromising the entire domain.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Credential AccessTactic: Privilege EscalationData Source: Active DirectoryUse Case: Active Directory MonitoringData Source: Windows Security Event LogsLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Credential Access (TA0006)(opens in a new tab or window)

↳ OS Credential Dumping (T1003)(opens in a new tab or window)

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

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

False Positive Examples
Service accounts that perform replication may trigger this alert on the first run per AD object, but they'll be suppressed in subsequent runs since this rule uses the new_terms rule type.
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
logs-system.security*logs-windows.forwarded*winlogbeat-*
Related Integrations

system(opens in a new tab or window)

windows(opens in a new tab or window)

Query
host.os.type:"windows" and event.code:"4662" and
  winlog.event_data.Properties:(
    *DS-Replication-Get-Changes* or *DS-Replication-Get-Changes-All* or
    *DS-Replication-Get-Changes-In-Filtered-Set* or *1131f6ad-9c07-11d1-f79f-00c04fc2dcd2* or
    *1131f6aa-9c07-11d1-f79f-00c04fc2dcd2* or *89e95b76-444d-4c62-991a-0facbeda640c*
  ) and winlog.event_data.AccessMask : "0x100" and
  not winlog.event_data.SubjectUserName:(*$ or MSOL_*)

Install detection rules in Elastic Security

Detect Potential Credential Access via DCSync 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).