This icon is a part of a collection of EXE flat icons produced by Icons8. Icons follow the guidelines of iOS, Windows, and Android and are designed by a single designer, guaranteeing the consistent quality. Both PNG and vector are available.
The icon shows a sheet of paper with a folded corner and the letters "EXE" displayed as the text, which may stand for execute. The icon most likely represents a file type and icon for that file to be opened stored on a computer.