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P4T12ICK
74 lines
2.6 KiB
YAML
74 lines
2.6 KiB
YAML
name: Windows Service Create Kernel Mode Driver
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id: 0b4e3b06-1b2b-4885-b752-cf06d12a90cb
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version: 1
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date: '2022-05-05'
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author: Michael Haag, Splunk
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status: production
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type: TTP
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description: The following analytic identifes a new kernel driver being added to Windows
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using sc.exe. Adding a Kernel driver is not common day to day and should be investigated
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to further understand the source.
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data_source:
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- Sysmon Event ID 1
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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=sc.exe
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Processes.process="*kernel*" by Processes.dest Processes.user Processes.parent_process_name
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Processes.process_name Processes.process 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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| `windows_service_create_kernel_mode_driver_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 based on common applications
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adding new drivers, however, filter as needed.
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references:
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- https://www.aon.com/cyber-solutions/aon_cyber_labs/yours-truly-signed-av-driver-weaponizing-an-antivirus-driver/
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tags:
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analytic_story:
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- Windows Drivers
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- CISA AA22-320A
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asset_type: Endpoint
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confidence: 80
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impact: 60
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message: Service control, $process_name$, loaded a new kernel mode driver on $dest$
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by $user$.
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mitre_attack_id:
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- T1543.003
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- T1543
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- T1068
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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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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.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: 48
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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/T1068/drivers/sc_kernel.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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update_timestamp: true
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