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Michael Haag
71 lines
2.8 KiB
YAML
71 lines
2.8 KiB
YAML
name: Ntdsutil Export NTDS
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id: da63bc76-61ae-11eb-ae93-0242ac130002
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version: 1
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date: '2021-01-28'
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author: Michael Haag, Patrick Bareiss, Splunk
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status: production
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type: TTP
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description: 'Monitor for signs that Ntdsutil is being used to Extract Active Directory
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database - NTDS.dit, typically used for offline password cracking. It may be used
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in normal circumstances with no command line arguments or shorthand variations of
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more common arguments. Ntdsutil.exe is typically seen run on a Windows Server. Typical
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command used to dump ntds.dit \
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ntdsutil "ac i ntds" "ifm" "create full C:\Temp" q q \
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This technique uses "Install from Media" (IFM), which will extract a copy of the
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Active Directory database. A successful export of the Active Directory database
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will yield a file modification named ntds.dit to the destination.'
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine: '*ntds*'
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Image|endswith: ntdsutil.exe
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selection2:
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CommandLine: '*create*'
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condition: (selection1 and selection2)
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how_to_implement: You must be ingesting endpoint data that tracks process activity,
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including parent-child relationships from your endpoints, to populate the Endpoint
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data model in the Processes node. The command-line arguments are mapped to the "process"
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field in the Endpoint data model.
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known_false_positives: Highly possible Server Administrators will troubleshoot with
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ntdsutil.exe, generating false positives.
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1003.003/T1003.003.md#atomic-test-3---dump-active-directory-database-with-ntdsutil
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- https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/cc753343(v=ws.11)
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- https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf
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- https://strontic.github.io/xcyclopedia/library/vss_ps.dll-97B15BDAE9777F454C9A6BA25E938DB3.html
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- https://www.microsoft.com/en-us/security/blog/2023/05/24/volt-typhoon-targets-us-critical-infrastructure-with-living-off-the-land-techniques/
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tags:
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analytic_story:
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- Credential Dumping
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- HAFNIUM Group
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- Living Off The Land
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- Prestige Ransomware
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- Ntdsutil Export NTDS
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asset_type: Endpoint
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confidence: 50
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impact: 100
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message: Active Directory NTDS export on $dest$
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mitre_attack_id:
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- T1003.003
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- T1003
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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risk_score: 50
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1003.003/atomic_red_team/windows-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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