LOLBAS/yml/OSBinaries/Regasm.yml
frack113 e8ea28d4e9
Update SigmaHQ ref (#301)
Signed-off-by: frack113 <62423083+frack113@users.noreply.github.com>
2023-06-19 22:40:24 +01:00

41 lines
2.1 KiB
YAML

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