My hash is:C7C0E3EFF454BB23133AC9F59D8F7E74298C072F7ECB672CB61D271060996E17. Is this legitimate windows installer?
You can only get a legitimate Windows 11 installer from Microsoft.
If your hash does not match the Microsoft List, then it is most likely (greater than 90%) not legitimate.
I would get another installer directly from Microsoft.