One way to have these metadata information added to the EXE file is to run the AutoIT compiler, Aut2exe.exe, from the command line using these parameters:
Aut2exe.exe /in "C:\examples\mszmsz.au3" /out mszmsz.exe /companyname MyCompany /filedescription MyFileDescription /productname MyProductName /fileversion 1.2 /productversion 3.4
There are other parameters available to set. The full list is available in the documentation of AutoIT or simply invoking Aut2exe.exe in this way:
To check that the desired metadata were correctly added to the EXE file right click on it in Windows, choose Properties and have a look to the Details tab.