Rating:

You know, that sound that bumblebees make?
file: buzz

Using file on buzz shows: compress'd data 16 bits. This shows its a UNIX-compressed file – and probably should have extension .z. Giving it correct extension you can open it with archiver and read buzz file contents inside.

Flag: flag{b3a33db7ba04c4c9052ea06d9ff17869}

Original writeup (https://thomaspreece.com/2021/03/15/nathamcon-ctf-2021/#4-buzz).