If the file size is small (a few MBs), it likely contains player progress. You would see folders named 000001 - QuickSave containing .sav and .rim files.
If the file is several gigabytes, it is likely a backup of the game installation. A legitimate backup would contain the swkotor.exe , data folders, and Miles sound drivers. File: Star Wars - KotOR.zip ...
A tslpatcher.exe or an install.exe for automated installation. A ReadMe.txt or Install_Guide.pdf with instructions. An Override folder containing .tga , .mdl , or .2da files. If the file size is small (a few
Always scan .zip files from unofficial sources with antivirus software before extracting, especially if they contain .exe or .dll files. A legitimate backup would contain the swkotor
If the file is specifically for audio, it will contain .mp3 or .flac files of the game's score by Jeremy Soule.