If yes, then how?
yes it is possible, you need a program to do so. imgburn is a free open source software that you can use to convert the files.
[link removed] is where you download the program
Click "Create image file from file/folders" and you will be brought to the ImgBurn application. Open a new window in your computer and locate the EXE file you want to convert to an ISO file. Drag the EXE file into the ImgBurn window and it will automatically load into the program.
Click the "Destination" icon folder and select a place for the new ISO file to be saved. Click the large green arrow at the bottom of the program to start the conversion process. The length of the conversion process depends on the size of the EXE file; it could take just a few minutes to convert a small EXE file into an ISO file.
Often it's just a matter of renaming the file to the .iso extension, as people will often change it to protect themselves from getting caught pirating ... I'd check that option first.
There are numerous programs that claim to be able to do this, though I'm not sure why you want to create an .iso file which is basically like a .rar file.
i keep forgetting that it removes links