![]() $s2 = “C:\Windows\Microsoft.NET\Framework\v7\RegAsm. # Atomic Test #1 - Regasm Uninstall Method Call TestĬ:\Windows\Microsoft.NET\Framework\v9\regasm.exe /U # Atomic Test #1 - Regasm Uninstall Method Call Test (Citation: LOLBAS Regsvcs)(Citation: LOLBAS Regasm) The code with the registration and unregistration attributes will be executed even if the process is run under insufficient privileges and fails to execute. (Citation: MSDN Regsvcs) (Citation: MSDN Regasm)īoth utilities may be used to bypass application control through use of attributes within the binary to specify code that should be run before registration or unregistration: or respectively. C:WindowsMicrosoft.NETFramework or C:WindowsMicrosoft.NETFramework64. NET Component Object Model (COM) assemblies. Regsvcs and Regasm are Windows command-line utilities that are used to register. Atomic Test #1: Regasm Uninstall Method Call Test Īdversaries may abuse Regsvcs and Regasm to proxy execution of code through a trusted Windows utility. NET Component Object Model (COM) assemblies Path : C:\Windows\Microsoft.NET\Framework64\v9\regasm.exeĭescription : Regsvcs and Regasm are Windows command-line utilities that are used to register. Path : C:\Windows\Microsoft.NET\Framework\v9\regasm.exe Path : C:\Windows\Microsoft.NET\Framework64\v7\regasm.exe Path : C:\Windows\Microsoft.NET\Framework\v7\regasm.exe Command : regasm.exe /U AllTheThings圆4.dll Command : regasm.exe AllTheThings圆4.dll Proc_creation_win_possible_applocker_bypass.yml Proc_creation_win_bad_opsec_sacrificial_processes.yml While RegAsm.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes. The following table contains possible examples of RegAsm.exe being misused. All rights reserved.Ĭ:\Windows\Microsoft.NET\Framework\v9\RegAsm.exeĬ:\WINDOWS\Microsoft.NET\Framework64\v9\RegAsm.exeĬ:\Windows\Microsoft.NET\Framework64\v9\RegAsm.exe Legal Copyright: Microsoft Corporation.Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US. ![]() Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US.Loaded Modules: PathĬ:\WINDOWS\Microsoft.NET\Framework\v9\RegAsm.exe RegAsm : error RA0000 : Could not load file or assembly ' file: /// C:\ WINDOWS \ help ' or one of its dependencies. NET component you must run a command-line tool called the Registration Assembly Tool (Regasm.exe).
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