To find out the length and creation date of a Windows file, hover your mouse over it, right-click and select "properties". To find out the unique fingerprint (MD5 hash) of a file, you should first launch any command shell (Run, Command Prompt, FAR, etc.). For example, press Windows + R, type cmd and press Enter. Then you need to execute the command: certutil -hashfile file.exe MD5 (where file.exe is the name of the file you want to check, with an extension and the full path). If the shell closes right after running the command and you don't have time to copy the hash, augment the command with output to a text file: certutil -hashfile file.exe MD5 >>md5data.txt