1.2.1.189

No Mods

Sounds like leaves brushing against character when in a foliage like a bush. The character is not moving. If I look left or right with TrackIR the sound goes away. Although I did not show it in the video, the sound goes away when prone as well. I don't know what triggers it, but once it happens you can step out of the foliage into a clear area and still hear it.

The sound seems to be the same sound made when character turns enough to rotate stance.