IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [7.16] ›Downloadable rule update v7.16.4

Enumerating Domain Trusts via NLTEST.EXE

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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Enumerating Domain Trusts via NLTEST.EXE

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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: 23

Runs every: 5m

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

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Discovery

Version: 3

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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## Setup

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule query

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

Framework: MITRE ATT&CKTM

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