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80 lines
3.2 KiB
YAML
80 lines
3.2 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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type: batch
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datamodel:
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- Endpoint
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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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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.process_name=ntdsutil.exe
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Processes.process=*ntds* Processes.process=*create*) by Processes.dest Processes.user
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Processes.parent_process Processes.process_name Processes.process Processes.process_id
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Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`|
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`security_content_ctime(lastTime)` | `ntdsutil_export_ntds_filter`'
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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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tags:
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analytic_story:
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- Credential Dumping
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- HAFNIUM Group
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asset_type: Endpoint
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automated_detection_testing: passed
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cis20:
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- CIS 8
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- CIS 16
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Credential Access
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1003.003/atomic_red_team/windows-sysmon.log
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impact: 100
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kill_chain_phases:
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- Actions on Objectives
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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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nist:
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- DE.CM
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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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required_fields:
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- _time
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- Processes.process_name
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- Processes.process
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- Processes.dest
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- Processes.user
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- Processes.parent_process
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- Processes.process_id
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- Processes.parent_process_id
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risk_score: 50
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security_domain: endpoint
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