Windows Vulnerable Driver Installed

name: Windows Vulnerable Driver Installed
id: 1dda7586-57be-4a1b-8de1-a9ad802b9a7f
version: 10
creation_date: '2020-01-19'
modification_date: '2026-05-13'
author: Dean Luxton
status: production
type: TTP
description: The following analytic detects the loading of known vulnerable Windows drivers, which may indicate potential persistence or privilege escalation attempts. It leverages Windows System service install EventCode 7045 to identify driver loading events and cross-references them with a list of vulnerable drivers. This activity is significant as attackers often exploit vulnerable drivers to gain elevated privileges or maintain persistence on a system. If confirmed malicious, this could allow attackers to execute arbitrary code with high privileges, leading to further system compromise and potential data exfiltration. This detection is a Windows Event Log adaptation of the Sysmon driver loaded detection written by Michael Haag.
data_source:
    - Windows Event Log System 7045
search: |-
    `wineventlog_system` EventCode=7045 ServiceType="kernel mode driver"
      | table _time dest EventCode ImagePath ServiceName ServiceType
      | lookup loldrivers driver_name AS ImagePath OUTPUT is_driver driver_description
      | search is_driver = TRUE
      | `windows_vulnerable_driver_installed_filter`
how_to_implement: Ensure the Splunk is collecting XmlWinEventLog:System events and the EventCode 7045 is being ingested.
known_false_positives: False positives will be present. Drill down into the driver further by version number and cross reference by signer. Review the reference material in the lookup. In addition, modify the query to look within specific paths, which will remove a lot of "normal" drivers.
references:
    - https://loldrivers.io/
    - https://github.com/SpikySabra/Kernel-Cactus
    - https://github.com/wavestone-cdt/EDRSandblast
    - https://research.splunk.com/endpoint/a2b1f1ef-221f-4187-b2a4-d4b08ec745f4/
    - https://www.splunk.com/en_us/blog/security/these-are-the-drivers-you-are-looking-for-detect-and-prevent-malicious-drivers.html
drilldown_searches:
    - name: View the detection results for - "$dest$"
      search: '%original_detection_search% | search  dest = "$dest$"'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
    - name: View risk events for the last 7 days for - "$dest$"
      search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
      earliest_offset: 7d
      latest_offset: "0"
finding:
    title: Potentially vulnerable/malicious driver [$ImagePath$] has been installed on $dest$
    entity:
        field: dest
        type: system
        score: 50
analytic_story:
    - Windows Drivers
    - Void Manticore
asset_type: Endpoint
mitre_attack_id:
    - T1543.003
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
category: endpoint
security_domain: endpoint
tests:
    - name: True Positive Test
      attack_data:
        - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1014/windows-system.log
          source: XmlWinEventLog:System
          sourcetype: XmlWinEventLog
      test_type: unit