Windows 10: Prevent specific app writing on specific folder

There's a 3rd-party app I have that let me connect to servers to play warcraft 3 with others. It is a great alternative for battle .net. But I am annoyed and worried of what it does. It generates random files inside system's "Windows" and "SysWOW64" folder.
It's just weird that they are doing this. It makes me worry. Especially, they are writing on a system folder. Any help would be much appreciated!
I already tried changing its permissions by going into the properties of the ".exe" >> Security Tab >> Advance >> Changing owner from "Administrator" to "User", and changing permissions from "Full Control" to "Read and Execute". Also removed other Principals. After all of that, it could still write on the system folder :/

Here's some screenshot of what it generates.
[Under Windows folder]


[Under SysWOW64 folder, it writes about 643 files...]


:)

 

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Carlos: Thanks for your reply. What you suggest is what I have been doing. I search for folders with a specific name and get a list. Then I have to search each folder for a specific file. So it's a two step search and that's what I was trying to avoid.

I assume there are applications out there that allow for an "AND" search in Windows. I'll try that approach.

Thanks, again.

 

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