The executable grabs the specified container format and extracts .tga images from it. It was community-made to satisfy a certain niche, unfortunately I cannot get into contact with the original creator/programmer and I have no way to re-compile the .tga images to the original container. Basically I want to reverse the procedure.
I'm not overly familiar with SE, if this post is considered low-effort or anything, please let me know and I will edit accordingly.
In the provided link the included files are 1) the extractor 2) one of the .mda containers 3) a .bat file that is used to make the extractor run. Will be edited later on to batch extract all the containers.