help with LUKS data recovery

[j45645hn45]

Was your original luks volume generated by some GUI or web-interface etc and you do not know what settings it uses?

Exactly this.

I mounted the fs now and created a random file on it and redid the whole process. Now I have randomness in the header, and I can decrypt it using hashcat. My guess is the VM is to blame, since I used a dynamically allocated virtual hard drive. In any case, it works now and I can direct my attention at the original header.

Thanks a lot for your help!