A
I think what AC-QUESTION was referring to is this app -- see screenshot -- which I also found installed on my phone 2 days ago. Note: I have a ZTE phone (not a Samsung ) and had not downloaded any new apps in two weeks or so.
View attachment 278417
View attachment 278418
The Blackhole app seems to be related to the "Bubble" app, likewise pictured here. They were both installed on the same day, they do not come up on the list of apps unless you hit "Show System."
There is a SIMILAR Question posted about the Black Hole app, but none of the answers seem to adequately address the mystery of why they just appear on the list of (system) apps. what is the app blackhole on android phone about?
@cribal48 answered long ago.