I'm posting the built-in autosave feature for testing.
http://webdrive.reborn.ru/asmm/public/h3wt.zip

Place it in the Heroes folder and run h3wt.exe.
If you need to disable the autosave, you can simply rename asmwt.dll or run the regular h3te.exe.

Autosave features:
Instead of the standard autosave.gm2, it creates saves in the format:
[red player name] vs [blue player name] [player color {1 - red, 2 - blue}] [date].gm[number of players]
For example:
asm vs Mee [1] 112.GM2
When playing against the computer, it creates saves in the format:
Computer vs Asm [2] 113.GM1
Currently, it only supports blue and red colors.