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P4T12ICK
75 lines
2.7 KiB
YAML
75 lines
2.7 KiB
YAML
name: Get WMIObject Group Discovery
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id: 5434f670-155d-11ec-8cca-acde48001122
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version: 1
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date: '2021-09-14'
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author: Michael Haag, Splunk
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type: Hunting
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datamodel:
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- Endpoint
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description: The following hunting analytic identifies the use of `Get-WMIObject Win32_Group`
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being used with PowerShell to identify local groups on the endpoint. \ Typically,
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by itself, is not malicious but may raise suspicion based on time of day, endpoint
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and username. \ During triage, review parallel processes and identify any further
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suspicious behavior.
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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=powershell.exe
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OR processes.process_name=cmd.exe) (Processes.process="*Get-WMIObject*" AND Processes.process="*Win32_Group*")
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by Processes.dest Processes.user Processes.parent_process_name Processes.process_name
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Processes.process Processes.original_file_name Processes.process_id Processes.parent_process_id
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`| `security_content_ctime(lastTime)` |
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`get_wmiobject_group_discovery_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: False positives may be present. Tune as needed.
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references:
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- https://attack.mitre.org/techniques/T1069/001/
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1069.001/T1069.001.md
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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/T1069.001/atomic_red_team/windows-sysmon.log
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impact: 30
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kill_chain_phases:
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- Reconnaissance
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message: System group discovery on $dest$ by $user$.
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mitre_attack_id:
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- T1069
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- T1069.001
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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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- name: user
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type: User
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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.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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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_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 15
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security_domain: endpoint
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asset_type: Endpoint
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