SigmaHQ/rules/windows/image_load/sysmon_uipromptforcreds_dlls.yml
2021-07-06 16:35:20 +08:00

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YAML

title: UIPromptForCredentials DLLs
id: 9ae01559-cf7e-4f8e-8e14-4c290a1b4784
description: Detects potential use of UIPromptForCredentials functions by looking for some of the DLLs needed for it.
status: experimental
date: 2020/10/20
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
tags:
- attack.credential_access
- attack.collection
- attack.t1056.002
references:
- https://securitydatasets.com/notebooks/small/windows/06_credential_access/SDWIN-201020013208.html
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1056.002/T1056.002.md#atomic-test-2---powershell---prompt-user-for-password
- https://docs.microsoft.com/en-us/windows/win32/api/wincred/nf-wincred-creduipromptforcredentialsa
logsource:
category: image_load
product: windows
detection:
selection:
- ImageLoaded|endswith:
- '\credui.dll'
- '\wincredui.dll'
- OriginalFileName:
- 'credui.dll'
- 'wincredui.dll'
condition: selection
falsepositives:
- other legitimate processes loading those DLLs in your environment.
level: medium