Hello, it started when I downloaded an executable file from the internet which, when opened, just popped up for a few seconds and then nothing further happened. The problem occurred after a while when my processor started running at 100%. But every time I turn on the task manager the processor suddenly starts running completely normally. I think the virus hides every time I turn on task manager so I can't even find out what it's running in the background. And I also noticed that it creates random files and folders even in the registry. When I looked in the Windows Defender history, I tried to delete those files but every time I delete them they are always created again. And one more thing I noticed that the virus creates exclusions for its files in Windows Defender. I am able to provide more information but I really don't know where to start it's really overwhelming. Thank you for any future help.