Russian cosmonauts filmed a UFO on the ISS

Mission Control: Observing the object?
Oleg Artemyev: What am I observing?
Mission Control: An object in the area of the solar battery,
do you see any?
Oleg Artemiev: Once again, what am I not watching? I don't
understand the word you're saying.
Mission Control: Above the far end of the solar array, where
we're watching an object through a TV camera. Wanted to ask
you to see what it is?
Oleg Artemyev: Some object at the end of the solar battery, is
it this square, or something, or an antenna?
Mission Control: No… Oleg is a free-flyer. Free flying object.
Oleg Artemyev: I don't see it. TsUP: Oleg, let's not waste time.
Oleg Artemyev: I don't see it.
Videos:
https://vk.com/video-181025252_456241401
https://youtu.be/lpaJe98NabI
https://youtu.be/Xa2Rr6LyMpo