Create image of existing Win8 and install it in a Virtualbox within Ubuntu

Hey guys,

I have a PC with 4 Harddisks. 2 of them build a raid where my data is stored.
On my SSD there is the Windows 8 System and on the 4th HDD there is Ubuntu installed.

I use my Windows 8 only for the Adobe products which don't run on Ubuntu, that's all.
So I asked myself if I can just create an Image from my Windows 8 SSD and install it as host system in a virtualbox on Ubuntu.

Is that possible? And if yes, what are the steps I would have to make?

Regards,
Michael