How to avoid load system DLL while creating application using WPF

Prashant Sharma 0

I have application in WPF C#, When I run process mon I can see list of System DLL

cryptsp.dll
CRYPTBASE.dll
bcrypt.dll
MSVCP140_CLR0400.dll
profapi.dll
USP10.dll
msls31.dll
NTASN1.dll By placing a malicious DLL with the same name in the application directory, arbitrary code execution was achieved. How to avoid such case.

Viorel 124.9K Reputation points

2025-10-23T10:53:07.52+00:00

I think that the malicious programs, that are able to put malicious DLLs, do not really need to put malicious DLLs in order to perform malicious activities.

1 answer

Bruce (SqlWork.com) 81,191 Reputation points Volunteer Moderator

2025-10-24T23:18:50.2266667+00:00

You get around this by only using signed dlls. Most system dlls are signed. If you are creating your own, then you must sign them:

https://free.blessedness.top/en-us/dotnet/standard/assembly/sign-strong-name
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