Domain Trust Discovery Via Dsquery

Status: test
Severity: medium
Log source: category process_creation, product windows
Author: E.M. Anhaus, Tony Lambert, oscd.community, omkar72
Source: github.com/SigmaHQ/sigma

Detects execution of "dsquery.exe" for domain trust discovery

Known false positives

Legitimate use of the utilities by legitimate user for legitimate reason

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1482` Domain Trust Discovery

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: Domain Trust Discovery Via Dsquery
id: 3bad990e-4848-4a78-9530-b427d854aac0
related:
    - id: b23fcb74-b1cb-4ff7-a31d-bfe2a7ba453b
      type: similar
    - id: 77815820-246c-47b8-9741-e0def3f57308
      type: obsolete
status: test
description: Detects execution of "dsquery.exe" for domain trust discovery
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1482/T1482.md
    - https://posts.specterops.io/an-introduction-to-manual-active-directory-querying-with-dsquery-and-ldapsearch-84943c13d7eb?gi=41b97a644843
author: E.M. Anhaus, Tony Lambert, oscd.community, omkar72
date: 2019-10-24
modified: 2023-02-02
tags:
    - attack.discovery
    - attack.t1482
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\dsquery.exe'
        - OriginalFileName: 'dsquery.exe'
    selection_cli:
        CommandLine|contains: 'trustedDomain'
    condition: all of selection_*
falsepositives:
    - Legitimate use of the utilities by legitimate user for legitimate reason
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_dsquery_domain_trust_discovery/info.yml
simulation:
    - type: atomic-red-team
      name: Windows - Discover domain trusts with dsquery
      technique: T1482
      atomic_guid: 4700a710-c821-4e17-a3ec-9e4c81d6845f

Stages and Predicates

Stage 0: `condition`

all of selection_*

Stage 1: `selection_img`

selection_img:
    - Image|endswith: '\dsquery.exe'
    - OriginalFileName: 'dsquery.exe'

Stage 2: `selection_cli`

selection_cli:
    CommandLine|contains: 'trustedDomain'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`trustedDomain` corpus 2 (sigma 1, splunk 1)	`field:"CommandLine" kind:match value:"trustedDomain"`
`Image`	ends_with	`\dsquery.exe` corpus 2 (sigma 2)	`field:"Image" kind:ends_with value:"\dsquery.exe"`
`OriginalFileName`	eq	`dsquery.exe` corpus 3 (sigma 2, elastic 1)	`field:"OriginalFileName" kind:eq value:"dsquery.exe"`

Domain Trust Discovery Via Dsquery

Known false positives

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection_img

Stage 2: selection_cli

Indicators

Stage 0: `condition`

Stage 1: `selection_img`

Stage 2: `selection_cli`