The BUFAS file has been encrypted

[hemdan_711 0]

The BUFAS file has been encrypted for what is the appropriate decryption tool

[Kevin Zoll 276]

Hello,

BUFUS is a variant of the STOP Ransomware family.   You can try using STOPDecrypter though STOPDecrypter more than likely won't be able to decrypt your files, it can still be used to get information that may be able to help the creator of STOPDecrypter figure out your decryption key. Here's a link to instructions on how to get this information with STOPDecrypter: https://kb.gt500.org/stopdecrypter

[Amigo-A 11]

hemdan_711

Before you decrypt the files, you need to make sure that there is neither this infection nor any other infection on the PC. We have seen cases when those who suffered from previous versions successfully decrypted files, but then they were attacked by the same encryptor, which encrypted files with a different extension, and used an encryption key that cannot be calculated. In punishment for haste and complacency, the user lost his files a second time and, possibly, forever.

As experience shows, very often after encryption on a PC, this or another infection remains, which you could get together with the encryptor.
Malicious programs often work in groups: trojans of a different type, password hijackers, backdoors, dormant malware, dangerous browser plugins.
Therefore, I advise you to check your PC for active and dormant malware. This can be done here in the forum in the next section.

You can also download the free tool Emsisoft Emergency Kit yourself and check the computer.