Potential Credential Access via DCSync

Last updated 4 months 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

MITRE ATT&CK™

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

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

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

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

windows(external, opens in a new tab or window)

Query

✄𐘗text code block:
✄𐘗host.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(external, opens in a new tab or window).