Windows Security: Detect Domain Trust Creation (Event ID 4706)

Alerts on Windows Event ID 4706 indicating a new trust was created to a domain.

FreeReviewedSigma · Medium · v2

Product: windows
Service: security
Author: Thomas Patzke (SigmaHQ), DRL 1.1
Published: 2019-12-03
Updated: 2026-07-31

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1098Account Manipulation
Priv Esc
- T1098Account Manipulation
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule flags Windows Security audit events where a new trust relationship is created to a domain (Event ID 4706). Attackers may establish or modify trust paths to facilitate persistence and access expansion without deploying additional malware. It relies on Windows Security logging for event 4706 indicating trust creation, which should be reviewed against expected domain topology and administrative changes.

Reporting behind it

Related detections9 linkedT1098 — drag to rearrange

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Suspicious Massive Group Membership Changes (via security)

Malicious High Risk Active Directory Group Membership Change (via security)

Malicious Account Marked as Sensitive and Cannot Be Delegated Had Its Protection Removed (via security)

Malicious Host Constrained Delegation Settings Changed for Potential Abuse (Rubeus) - Kerberos Only (via security)

Windows Security: Detect Domain Trust Creation (Event ID 4706)

Pivot detection · T1098 · 9 related

Changelog

v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

windows-security-domain-trust-creation-event-id-4706-0255a820

title: "Windows Security: Detect Domain Trust Creation (Event ID 4706)"
id: 59ab96db-932e-4a9a-a20c-d455dd641289
status: stable
description: This rule flags Windows Security audit events where a new trust relationship is created to a domain (Event ID 4706). Attackers may establish or modify trust paths to facilitate persistence and access expansion without deploying additional malware. It relies on Windows Security logging for event 4706 indicating trust creation, which should be reviewed against expected domain topology and administrative changes.
references:
  - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4706
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/builtin/security/win_security_susp_add_domain_trust.yml
author: Thomas Patzke, Huntrule Team
date: 2019-12-03
modified: 2024-01-16
tags:
  - attack.privilege-escalation
  - attack.persistence
  - attack.t1098
logsource:
  product: windows
  service: security
detection:
  selection:
    EventID: 4706
  condition: selection
falsepositives:
  - Legitimate extension of domain structure
level: medium
license: DRL-1.1
related:
  - id: 0255a820-e564-4e40-af2b-6ac61160335c
    type: derived

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