.BITSTAK File

File extension bitstak is associated with a ransomware labeled as Bitstak that is distributed via e-mails, encrypts users files and them demands ransom in bitcoins / cash for their recovery.

Luckily, it was probably done by amateur and thus decrypt exists.

How to open:

You can use the decryptor from Michael Gillespie to decrypt .bitstak files.

How to convert:

Once you have decrypted the files, you can convert them like the original.