DSt is a software developer for Windows.
It is reported that the following Windows processes are part of Diro Trader:
If you want to remove Diro Trader from your computer, just go to Start > Control Panel > Add/Remove programs and select Diro Trader from the list of programs.
It is reported that the following Windows processes are part of Mayk:
If you want to remove Mayk from your computer, just go to Start > Control Panel > Add/Remove programs and select Mayk from the list of programs.