mirror of
https://github.com/LOLBAS-Project/LOLBAS
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41 lines
2.1 KiB
YAML
41 lines
2.1 KiB
YAML
---
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Name: Regasm.exe
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Description: Part of .NET
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Author: 'Oddvar Moe'
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Created: 2018-05-25
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Commands:
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- Command: regasm.exe AllTheThingsx64.dll
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Description: Loads the target .DLL file and executes the RegisterClass function.
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Usecase: Execute code and bypass Application whitelisting
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Category: AWL Bypass
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Privileges: Local Admin
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MitreID: T1218.009
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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- Command: regasm.exe /U AllTheThingsx64.dll
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Description: Loads the target .DLL file and executes the UnRegisterClass function.
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Usecase: Execute code and bypass Application whitelisting
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Category: Execute
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Privileges: User
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MitreID: T1218.009
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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Full_Path:
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- Path: C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
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- Path: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\regasm.exe
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- Path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
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- Path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regasm.exe
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Code_Sample:
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- Code:
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Detection:
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- Sigma: https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_lolbin_regasm.yml
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- Elastic: https://github.com/elastic/detection-rules/blob/12577f7380f324fcee06dab3218582f4a11833e7/rules/windows/execution_register_server_program_connecting_to_the_internet.toml
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- Splunk: https://github.com/splunk/security_content/blob/bc93e670f5dcb24e96fbe3664d6bcad92df5acad/docs/_stories/suspicious_regsvcs_regasm_activity.md
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- Splunk: https://github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_regasm_with_network_connection.yml
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- IOC: regasm.exe executing dll file
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Resources:
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- Link: https://pentestlab.blog/2017/05/19/applocker-bypass-regasm-and-regsvcs/
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- Link: https://oddvar.moe/2017/12/13/applocker-case-study-how-insecure-is-it-really-part-1/
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- Link: https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218.009/T1218.009.md
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Acknowledgement:
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- Person: Casey Smith
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Handle: '@subtee'
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