Files with buk file extension are reported to be generated by some Worms and other viruses.
There is one other file type using
the BUK file extension!
.buk - MPlayer VOB backup
BUK file extension - Malicious data
What is buk file? How to open buk files?
File type specification:
The buk file extension is not yet associated with any software or program.
However, some malicious viruses use the BUK file extension for files they create. You should probably run antivirus check if you find the .buk files in your computer.
Example: WORM_AUTORUN.BUK