Enumerating Domain Trusts via NLTEST.EXEedit

Identifies the use of nltest.exe for domain trust discovery purposes. Adversaries may use this command-line utility to enumerate domain trusts and gain insight into trust relationships, as well as the state of Domain Controller (DC) replication in a Microsoft Windows NT Domain.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Discovery

Version: 100

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guideedit

Rule queryedit

process where event.type in ("start", "process_started") and
    process.name : "nltest.exe" and process.args : (
        "/DCLIST:*", "/DCNAME:*", "/DSGET*",
        "/DOMAIN_TRUSTS", "/BDC_QUERY:*")