An atom of carbon floats lonely is vast void of the quantum realm. Empty and alone, the atom just sits there and occasionally lets of a particle of energy. Another atom comes into view, another Carbon! The other carbon atom floats towards the first and the fly extremely close to each other, and at the very last moment they connect with a strange force that binds them together. As time progresses this continues until a chain of carbon floats in the void.
With an unexpected slam a Hydrogen atom joins the chain. Creating what most would call a simple chain of DNA, and with the DNA. Life. As more hydrogen joins the DNA the chain becomes larger and larger. SLAM goes a random atom and damages the DNA beyond repair. The now forever crippled DNA gathers proteins and forms a shell around itself to prevent more random atom assaults. The DNA no longer holds everything required to be called life and a virus is born in its place.
The virus, shaped like a ball with sharp spines covering the outside, floats aimlessly through space. Waiting.