Trojan, Trojan.Generic?

Most viruses/malware likes to change admin settings to prevent you from taking action to remove the malware. You'll have to reset the permissions to the default Win settings. There is a thread here addressing this problem with advice from Brink that may be helpful.

Reset Windows 10 Administrator Account to default - - Windows 10 Forums

Unfortunately, that'll only reset the profile for the built-in Administrator account, and not the account itself.

In your situation, you might see if doing a repair install may help without losing anything.

Repair Install Windows 10 with an In-place Upgrade

Vikdal said:

Sorry for not posting in a while, I was taking a break. Are you talking about addition.txt?

And run a scan?

Yes Vikdal. FRST.txt and addition.txt.

Edit: I see you've already posted them. This will take some time.

Vikdal said:

I just want to note that the "Zemana AntiMalware" someone told me to download earlier is blocking some .dll files. I also did a little bit of a google and found out that kokoko2 is basicly a virus

exe file running was MIO.exe

Did you run that Windows defender deep scan? Seems things are back as they were.

Hi and thanks for the logs. I will review them now.
In the meantime, please disconnect the infected system from the internet, to prevent further downloads by the Trojan.

Do you have a clean system available in case we need to download tools from the internet before we let the infected computer go back online?