The upright row is an upper body exercise that works mainly the shoulders. If you use a wider hand placement on the row it can also develop the trapezoid and rhomboid muscles in the upper back. You can use dumbbells, a barbell, or bands to perform this exercise.
You should start standing upright with the weight in your outstretched hands. Your hands should be around shoulder width apart. The closer your hands are together the more you will isolate your shoulders. As your hands get wider you will bring more traps and rhomboids into the exercise.
The row movement is done by bringing the weight from your thighs to a point directly under your chin. Your arms should bend and your elbows should point to the sky. As you are at the top of the row you should squeeze your shoulders and traps.