This appears to be a circle with a 5 in the center of it. There's a square underneath the circle that's missing its top line. There is an arrow that is pointing from the bottom of the circle to the bottom of the square.
This Deposit 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 5,700 icons, all in the same style and quality.