2021-09-27 05:31:30 +02:00
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Name: Wfc.exe
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Description: The Workflow Command-line Compiler tool is included with the Windows Software Development Kit (SDK).
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Author: Jimmy (@bohops)
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Created: 2021-09-26
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Commands:
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- Command: wfc.exe c:\path\to\test.xoml
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Description: Execute arbitrary C# code embedded in a XOML file.
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Usecase: Execute proxied payload with Microsoft signed binary to bypass WDAC policies
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Category: AWL Bypass
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Privileges: User
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2021-11-05 21:06:57 +01:00
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MitreID: T1127
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2021-09-27 05:31:30 +02:00
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OperatingSystem: Windows 10 2004 (likely previous and newer versions as well)
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Full_Path:
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- Path: C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\wfc.exe
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2021-11-05 19:58:26 +01:00
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Code_Sample:
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2021-09-27 05:31:30 +02:00
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- Code: https://bohops.com/2020/11/02/exploring-the-wdac-microsoft-recommended-block-rules-part-ii-wfc-fsi/
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2021-11-05 19:58:26 +01:00
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Detection:
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2021-11-15 14:19:03 +01:00
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- BlockRule: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
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- IOC: As a Windows SDK binary, execution on a system may be suspicious
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2021-09-27 05:31:30 +02:00
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Resources:
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- Link: https://bohops.com/2020/11/02/exploring-the-wdac-microsoft-recommended-block-rules-part-ii-wfc-fsi/
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Acknowledgement:
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- Person: Matt Graeber
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Handle: '@mattifestation'
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- Person: Jimmy
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Handle: '@bohops'
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2021-11-05 19:58:26 +01:00
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