SigmaHQ/rules/windows/registry_event/sysmon_suspicious_keyboard_layout_load.yml
2020-07-01 09:11:00 +02:00

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YAML
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title: Suspicious Keyboard Layout Load
id: 34aa0252-6039-40ff-951f-939fd6ce47d8
description: Detects the keyboard preload installation with a suspicious keyboard layout, e.g. Chinese, Iranian or Vietnamese layout load in user session on systems
maintained by US staff only
references:
- https://renenyffenegger.ch/notes/Windows/registry/tree/HKEY_CURRENT_USER/Keyboard-Layout/Preload/index
- https://github.com/SwiftOnSecurity/sysmon-config/pull/92/files
author: Florian Roth
date: 2019/10/12
modified: 2019/10/15
logsource:
category: registry_event
product: windows
definition: 'Requirements: Sysmon config that monitors \Keyboard Layout\Preload subkey of the HKLU hives - see https://github.com/SwiftOnSecurity/sysmon-config/pull/92/files'
detection:
selection_registry:
TargetObject:
- '*\Keyboard Layout\Preload\*'
- '*\Keyboard Layout\Substitutes\*'
Details|contains:
- 00000429 # Persian (Iran)
- 00050429 # Persian (Iran)
- 0000042a # Vietnamese
condition: selection_registry
falsepositives:
- "Administrators or users that actually use the selected keyboard layouts (heavily depends on the organisation's user base)"
level: medium