It looks like is a specific file name or a randomized string, likely referring to a video file (ending in .mp4 ).
If you need a formal description for an archive, you could use: "Digital video asset labeled 3ehsiiwhsbbsjiwmp4. Format: MPEG-4. Source: Internal capture." 3ehsiiwhsbbsjiwmp4
If you want a story based on the "gibberish" nature of the name, it could be a secret code or a corrupted transmission from a distant satellite. It looks like is a specific file name