Why would an admin seek out Winbox 312 instead of the latest version from the MikroTik website? Here are the defining characteristics:
If you lose your router password, Winbox 312 is your lifeline. winbox 312
The data-streams of the digital metropolis of shimmered like liquid neon. In this world of pure information, Winbox 312 was a ghost. Not a virus, not a firewall, but something in between: a forgotten backdoor protocol that had been patched out of every system update for the last decade. Why would an admin seek out Winbox 312
Although MikroTik does not always provide MD5 for legacy builds, you can right-click the file > Properties > Digital Signatures to ensure it is signed by "MikroTik SIA". The signature should be valid. not a firewall