In Disk Utility suddenly are 7 Disk Images with strange names. They start with Creedence or Revival and all end with _Cryptex.

https://forums.macrumors.com/threads/in-disk-utility-suddenly-are-7-disk-images-with-strange-names-they-start-with-creedence-or-revival-and-all-end-with-_cryptex.2443437/