I must have looked through and checked a thousand audio files trying to find this one. It has the Audio Jungle Watermark but I have no idea of the name - it is used on a mock video done several years ago and I lifted this tiny piece from that video.
Unfortunately, this will be a tough one. I don’t think even Envato staff could help identify it under these circumstances. If you have the original unedited preview file (mp3), I can likely track it down myself. If you have any sort of ID number for the item (perhaps it will show in the timeline of your video editing program) then I can also look that up.
I ran it through ContentID and got no results back. Without the original preview file or ID, your only hope is that an audio author on the forums recognizes it, which is equally unlikely as it would be impressive.