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P4T12ICK
78 lines
2.9 KiB
YAML
78 lines
2.9 KiB
YAML
name: GetWmiObject DS User with PowerShell
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id: 22d3b118-04df-11ec-8fa3-acde48001122
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version: 1
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date: '2021-08-24'
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author: Teoderick Contreras, Mauricio Velazco, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: This analytic looks for the execution of `powershell.exe` with command-line
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arguments utilized to query for domain users. The `Get-WmiObject` commandlet combined
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with the `-class ds_user` parameter can be used to return the full list of users
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in a Windows domain. Red Teams and adversaries alike may leverage WMI in this case,
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using PowerShell, to enumerate domain users for situational awareness and Active
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Directory Discovery.
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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="cmd.exe"
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OR Processes.process_name="powershell*") AND Processes.process = "*get-wmiobject*"
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AND Processes.process = "*ds_user*" AND Processes.process = "*root\\directory\\ldap*"
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AND Processes.process = "*-namespace*" by Processes.dest Processes.user Processes.parent_process
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Processes.process_name Processes.process Processes.process_id Processes.parent_process_id
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Processes.parent_process_name | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)` | `getwmiobject_ds_user_with_powershell_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA.
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known_false_positives: Administrators or power users may use this command for troubleshooting.
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references:
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- https://jpcertcc.github.io/ToolAnalysisResultSheet/details/dsquery.htm
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tags:
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analytic_story:
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- Active Directory Discovery
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Discovery
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1087.002/AD_discovery/windows-sysmon.log
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impact: 50
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kill_chain_phases:
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- Reconnaissance
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message: an instance of process $process_name$ with commandline $process$ in $dest$
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mitre_attack_id:
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- T1087.002
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- T1087
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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- name: parent_process_name
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type: Process
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role:
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- Parent Process
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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.dest
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- Processes.user
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- Processes.parent_process
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_id
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- Processes.parent_process_name
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risk_score: 25
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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asset_type: Endpoint
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