unknown Registry-key, is it malware?

By a coincidence I found an unknown Registry-key.
HKey_Local_Machine\Software\micrsoft\windows\currentversion\explorer\advanced.
(Yes, it is micrsoft and not microsoft)
I googled, but could not find anything relevant about this key.
My first thought was that the machine is infected, so I scanned it with several AV's, but found nothing.
After a registry-backup I deleted the key and after a reboot everything works fine.
But I'm still a little bit anxious about this. Could it be a 'left-over' from some malware?
Does anybody know this registry-key?

Code:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Micrsoft]

[HKEY_LOCAL_MACHINE\SOFTWARE\Micrsoft\Windows]

[HKEY_LOCAL_MACHINE\SOFTWARE\Micrsoft\Windows\CurrentVersion]

[HKEY_LOCAL_MACHINE\SOFTWARE\Micrsoft\Windows\CurrentVersion\Explorer]

[HKEY_LOCAL_MACHINE\SOFTWARE\Micrsoft\Windows\CurrentVersion\Explorer\Advanced]
"Hidden"=dword:00000001
"HideFileExt"=dword:00000000
"SuperHidden"=dword:00000001
"ShowSuperHidden"=dword:00000001

Thanks in advance,

Chato

 

Re: unknows Registry-key, is it malware?

I've seen that before, but I can't recall it right now.
I don't think it's related to malware

 

Nothing wrong with those keys. They are related to Windows Explorer view options, as seen in Tools > Folder Options > View.