That was part of the demo content.
You need to import it. Theme Options -> Import Demo Content
It is one of the demo layerslider, you can find it after importing demo content.
Open up the slider named corporate, and look at the second slide.
The icon is font-awesome HTML code entered in content and the box is created by style code.
You will have to learn how to use the layslider from it’s documentation found in it’s admin interface.
Here is a screenshot of the mentioned slide and it’s interface. http://prntscr.com/7ktnvd