UNKNOWN Virus 🔐 (.UNKNOWN Files) — How to Remove?

The Unknown virus belongs under the Phobos ransomware family. Malware of such sort encrypts all the data on your computer (images, documents, excel sheets, audio files, videos, etc) and appends its extra extension to every file, leaving the info.txt files in each folder with the encrypted files.

What is Unknown virus?

☝️ A scientifically correct designation for the Unknown would be “a Phobos family ransomware malicious agent”.

The scheme of renaming is the following: id[xxxxxx].[contact_email].unknown. During the encryption, a file entitled, for example, “report.docx” will be renamed to “report.docx.id[9ECFA84E-3351].[[email protected]].unknown”.

In every folder that contains the encrypted files, a info.txt file will appear. It is a ransom money memo. Therein you can find information about the ways of paying the ransom and some other information. The ransom note most probably contains instructions on how to buy the decryption tool from the Unknown developers. You can get this decryptor after contacting [email protected] via email. That is how they do it.

Unknown abstract:

The info.txt file accompanying the Unknown malware states the following:

!!!All of your files are encrypted!!!
To decrypt them send e-mail to this address: [email protected].
If we don\'t answer in 24h, send messge to telegram: @Stop_24

In the image below, you can see what a directory with files encrypted by the Unknown looks like. Each filename has the “.unknown” extension added to it.

How did Unknown ransomware end up on my PC?

There are many possible ways of ransomware injection.

Nowadays, there are three most popular methods for evil-doers to have the Unknown virus settled in your system. These are email spam, Trojan injection and peer-to-peer file transfer.

If you access your inbox and see emails that look just like notifications from utility services providers, postal agencies like FedEx, web-access providers, and whatnot, but whose addresser is unknown to you, beware of opening those letters. They are very likely to have a ransomware item enclosed in them. Therefore, it is even more dangerous to open any attachments that come with letters like these.

As for the peer file transfer protocols like BitTorrent or eMule, the danger is that they are even more trust-based than the rest of the Internet. You can never guess what you download until you get it. Our suggestion is that you use trustworthy websites. Also, it is a good idea to scan the folder containing the downloaded items with the anti-malware utility as soon as the downloading is complete.

How do I get rid of the Unknown virus?

It is crucial to inform you that besides encrypting your files, the Unknown virus will probably deploy the Azorult Spyware on your PC to get access to credentials to different accounts (including cryptocurrency wallets). That spyware³ can extract your logins and passwords from your browser’s auto-filling data.

Often criminals would unblock some of your files to prove that they indeed have the decryption tool. As Unknown virus is a relatively new ransomware, safety measures engineers have not yet found a method to reverse its work. Nevertheless, the decoding tools are constantly upgraded, so the effective countermeasure may soon be available.

Understandably, if the criminals do the job of encrypting someone’s critical files, the desperate person will probably fulfill their demands. Nevertheless, paying to criminals gives no guarantee that you’re getting your blocked information back. It is still dangerous. After getting the ransom, the racketeers may send a wrong decryption code to the injured party. There were reports about malefactors simply disappearing after getting the ransom without even bothering to reply.

The optimal safety measure against ransomware is to have aan OS restore point or the copies of your critical files in the cloud storage or at least on an external drive. Obviously, that might be not enough. The most important thing could be that one you were working upon when it all happened. Nevertheless, it is something. It is also advisable to scan your drives with the antivirus program after the system restoration.

Unknown is not the only ransomware of its kind, since there are other specimens of ransomware out there that act in the same manner. Examples of those are Mzop, Bpws, Bpsm, and some others. The two basic differences between them and the Unknown are the ransom amount and the encoding method. The rest is the same: files become blocked, their extensions changed, ransom notes are created in every directory containing encoded files.

Some lucky victims were able to decode the arrested files with the help of the free software provided by anti-ransomware specialists. Sometimes the criminals mistakenly send the decoding code to the victims in the ransom note. Such an epic fail allows the victim to restore the files. But naturally, one should never expect such a chance. Remember, ransomware is a criminals’ technology to lay their hands on the money of their victims.

How to avert ransomware infiltration?

Unknown ransomware has no superpower, so as any similar malware.

You can armour your computer from ransomware attack taking three easy steps:

• Never open any emails from unknown senders with unknown addresses, or with content that has nothing to do with something you are waiting for (how can you win in a lottery without even taking part in it?). If the email subject is likely something you are waiting for, check all elements of the suspicious email with caution. A hoax email will surely have a mistake.
• Avoid using cracked or unknown programs. Trojan viruses are often distributed as an element of cracked products, possibly as a “patch” to prevent the license check. Understandably, potentially dangerous programs are difficult to distinguish from reliable software, because trojans may also have the functionality you seek. You can try to find information about this software product on the anti-malware message boards, but the best way is not to use such software.

Reasons why I would recommend GridinSoft⁴

Download Removal Tool.

Run the setup file.

Press “Install” button.

Once installed, Anti-Malware will automatically run.

Wait for the Anti-Malware scan to complete.

Click on “Clean Now”.

Frequently Asked Questions

🤔 Can I somehow access “.unknown” files?

There’s no way to do it, unless the files “.unknown” files are decrypted.

🤔 The encrypted files are very important to me. How can I decrypt them quickly?

Hopefully, you have made a copy of those important files. If not, there is still a function of System Restore but it needs a Restore Point to be previously saved. There are other ways to beat ransomware, but they take time.

🤔 What to do if the Unknown virus has blocked my PC and I can’t get the activation key.

🤔 And what should I do now?

Some of the encrypted files can be found elsewhere.

• If you sent or received your important files via email, you could still download them from your online mail server.
• You might have shared photographs or videos with your friends or family members. Just ask them to post those images back to you.
• If you have initially got any of your files from the Web, you can try downloading them again.
• Your messengers, social media pages, and cloud drives might have all those files as well.
• Maybe you still have the needed files on your old computer, a portable device, mobile, external storage, etc.

USEFUL TIP: You can use data recovery utilities⁶ to retrieve your lost information since ransomware encodes the copies of your files, deleting the original ones. In the video below, you can see how to recover your files with PhotoRec, but remember: you can do it only after you remove the virus with an anti-malware program.

Also, you can contact the following official fraud and scam sites to report this attack:

• In the United States: On Guard Online;
• In Canada: Canadian Anti-Fraud Centre;
• In the United Kingdom: Action Fraud;
• In Australia: SCAMwatch;
• In New Zealand: Consumer Affairs Scams;
• In France: Agence nationale de la sécurité des systèmes d’information;
• In Germany: Bundesamt für Sicherheit in der Informationstechnik;
• In Ireland: An Garda Síochána;

To report the attack, you can contact local executive boards. For instance, if you live in USA, you can have a talk with FBI Local field office, IC3 or Secret Service.

1. My files are encrypted by ransomware, what should I do now?
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