The file appears to be a compressed archive containing a specific version of WinToHDD , a Windows deployment tool.
For a safe experience, it is recommended to download the latest version (e.g., 6.8) from reputable software repositories like Neowin or the official developer's site.
WinToHDD is a handy and useful software which allows you to install or reinstall Windows (Vista/2008 or later) without using a CD/ Windows startup problems and treatments - Bleeping Computer
, I can provide specific steps for: Cloning your current drive to a new SSD. Reinstalling Windows without a USB stick. Verifying if the file you downloaded is safe to run. WinToHDD 6.8 - Neowin
: Enables installing Windows onto a second hard drive or partition.
: Facilitates migrating an existing Windows OS installation from an old disk to a new one (e.g., HDD to SSD).
: Allows you to reinstall Windows directly from an ISO, WIM, ESD, or SWM file without using external bootable media.