Box inside the box? The only time I’ve seen that is when the image has been cropped.
Here’s a quick run down of how this works.
Turn on wireframe by going to the button with the partial square just above the image in the canvas. Make sure it is selected to image+wireframe.
To scale the image, select the image and go to the corner of the wireframe in the canvas until you see a plus mark. This will scale the image. Hold down shift to change the aspect ratio.
To rotate the image, just go to the edge of the wireframe (not the corner, but any other edge) and the pointer icon will change to a circle with an arrow on it. This will rotate. Hold down shift to rotate in increments of 45 degrees.
To crop, hit C on the key board and select the edge or corner and start dragging.
Hope that helps.
-Russ