Tools like Control Panel for Windows PE (Preinstallation Environment) or Portable WinCP (a network tool) are legitimate. A developer might share an updater and the portable build in a MEGA folder for easy redistribution.
Always be cautious when downloading portable executables from cloud storage links like Mega.nz. Ensure you scan the files with a reputable antivirus or upload them to VirusTotal before running them. https meganz folder cp upd portable
However, without the (including the folder key and decryption key if required), I cannot: Tools like Control Panel for Windows PE (Preinstallation