This Virtual Machine icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,600 icons, all in the same style and quality.
The virtual machine has two frames with one frame on top of and slightly offset to the south east of the other one. Each frame consists of an inner rectangle and an outer rectangle with rounded edges with a slight gap between the two rectangles.