My search led me to a dead RaidForums thread (https://raidforums.com/thread-123903-page-2.html), but more actual details were up on eg. (be careful with sites like these)

https://winbuzzer.com/2021/02/09/billions-of-user-passwords-...

I wonder why is it so hard for us "regular folk" to get a hold of this DB (surprise, surprise, I do NOT want to query my credentials on another web site), yet regulars on these "hacking" forums probably have it easy.