Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
52 lines
2.0 KiB
YAML
52 lines
2.0 KiB
YAML
title: Potential Recon Activity Via Nltest.EXE
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id: 5cc90652-4cbd-4241-aa3b-4b462fa5a248
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related:
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- id: 410ad193-a728-4107-bc79-4419789fcbf8
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type: similar
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- id: 903076ff-f442-475a-b667-4f246bcc203b
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type: similar
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- id: 77815820-246c-47b8-9741-e0def3f57308
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type: obsolete
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status: test
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description: Detects nltest commands that can be used for information discovery
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references:
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- https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731935(v=ws.11)
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- https://thedfirreport.com/2021/08/16/trickbot-leads-up-to-fake-1password-installation/
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- https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/
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- https://book.hacktricks.xyz/windows/basic-cmd-for-pentesters
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- https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/
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- https://eqllib.readthedocs.io/en/latest/analytics/03e231a6-74bc-467a-acb1-e5676b0fb55e.html
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- https://redcanary.com/blog/how-one-hospital-thwarted-a-ryuk-ransomware-outbreak/
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- https://github.com/redcanaryco/atomic-red-team/blob/5360c9d9ffa3b25f6495f7a16e267b719eba2c37/atomics/T1482/T1482.md#atomic-test-2---windows---discover-domain-trusts-with-nltest
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author: Craig Young, oscd.community, Georg Lauenstein
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date: 2021-07-24
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modified: 2023-12-15
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tags:
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- attack.discovery
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- attack.t1016
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- attack.t1482
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logsource:
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category: process_creation
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product: windows
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detection:
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selection_nltest:
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- Image|endswith: '\nltest.exe'
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- OriginalFileName: 'nltestrk.exe'
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selection_recon:
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- CommandLine|contains|all:
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- 'server'
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- 'query'
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- CommandLine|contains:
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- '/user'
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- 'all_trusts' # Flag for /domain_trusts
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- 'dclist:'
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- 'dnsgetdc:'
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- 'domain_trusts'
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- 'dsgetdc:'
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- 'parentdomain'
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- 'trusted_domains'
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condition: all of selection_*
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falsepositives:
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- Legitimate administration use but user and host must be investigated
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level: medium
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