wrar390.exe - WinRAR (32-bit installer)
winrar-x64-390.exe - WinRAR (64-bit installer)
Dos.SFX - Optional DOS SFX Module (for WinRAR 3.50 or newer, ported from WinRAR 3.42), copy it to WinRAR's installation directory
keygen.exe - Used to register the program
rarreg.key - If the keygen fails, copy this file to WinRAR's installation directory (overwrite the existing file)