Add a file prefix with MV

Is there a way to add a prefix to a file using mv? I'm finding the prefix is substituted for the leading characters rather than appended to the beginning using
mv *.* PREFIX*.*

What occurs is LongerFileName.txt is moved as PREFIXFileName.txt
What I'd like is PREFIXLongerFileName.txt

Any thoughts?

It's not possible with simple operation mask in scripting.

Use WinSCP .NET assembly from some more powerful scripting language (like PowerShell).
https://winscp.net/eng/docs/library_powershell