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

The Muskoff virus falls under the Chaos ransomware family. A harmful program of such sort encrypts all the data on your PC (images, documents, excel sheets, music, videos, etc) and appends its extra extension to every file, leaving the read_it.txt text files in each folder which contains the encrypted files.

Muskoff virus: what is known so far?

☝️ Muskoff is a Chaos family ransomware-type malicious agent.

Muskoff adds its own .MuskOff extension to every file’s title. For instance, an image entitled “photo.jpg” will be altered to “photo.jpg.MuskOff”. In the same manner, the Excel table named “table.xlsx” will become “table.xlsx.MuskOff”, and so forth.

In each folder that contains the encoded files, a read_it.txt text file will be found. It is a ransom money memo. It contains 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 Muskoff developers. That is how they do it.

Muskoff Overview:

Name Muskoff Virus
Ransomware family1 Chaos ransomware
Extension .MuskOff
Ransomware note read_it.txt
Ransom $1500 (in BTC)
Detection Win32/Filecoder.Avaddon.H, TrojanDropper:Win32/BcryptInject.A!MTB, BScope.TrojanRansom.Reveton
Symptoms Your files (photos, videos, documents) get a .MuskOff extension and you can’t open them.
Fix Tool See If Your System Has Been Affected by Muskoff virus

The read_it.txt file accompanying the Muskoff ransomware provides the following discouraging information:

----> Chaos is multi language ransomware. Translate your note to any language <----
All of your files have been encrypted
Your computer was infected with a ransomware virus. Your files have been encrypted and you won\'t
be able to decrypt them without our help.What can I do to get my files back?You can buy our special
decryption software, this software will allow you to recover all of your data and remove the
ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only.
How do I pay, where do I get Bitcoin?
Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search
yourself  to find out how to buy Bitcoin.
Many of our customers have reported these sites to be fast and reliable:
Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com


Payment informationAmount: 0.1473766 BTC
Bitcoin Address:  17CqMQFeuB3NTzJ2X28tfRmWaPyPQgvoHV

In the image below, you can see what a directory with files encrypted by the Muskoff looks like. Each filename has the ".MuskOff" extension appended to it.

Muskoff Virus - encrypted .MuskOff files

That is how encrypted ".MuskOff" files look.

How did my computer get infected with Muskoff ransomware?

There are plenty of possible ways of ransomware injection.

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

  • Another option for ransom hunters is a Trojan file model. A Trojan is a program that infiltrates into your PC pretending to be something different. Imagine, you download an installer of some program you need or an update for some program. But what is unpacked turns out to be a harmful program that encodes your data. Since the update file can have any title and any icon, you have to make sure that you can trust the source of the things you're downloading. The optimal thing is to use the software companies' official websites.
  • As for the peer-to-peer networks like torrent trackers or eMule, the threat is that they are even more trust-based than the rest of the Web. You can never know what you download until you get it. Our suggestion is that you use trustworthy websites. Also, it is reasonable to scan the folder containing the downloaded items with the anti-malware utility as soon as the downloading is finished.

How to remove ransomware?

It is important to note that besides encrypting your data, the Muskoff virus will probably deploy Vidar Stealer on your machine to seize your credentials to different accounts (including cryptocurrency wallets). That program can extract your credentials from your browser's auto-filling cardfile.

How to avoid ransomware infection?

Muskoff ransomware has no superpower, neither does any similar malware.

You can armour yourself from ransomware infiltration taking several easy steps:

  • Ignore any emails from unknown mailboxes with strange addresses, or with content that has nothing to do with something you are waiting for (how can you win in a money prize draw without participating in it?). In case the email subject is more or less something you are expecting, scrutinize all elements of the suspicious email carefully. A hoax email will always contain a mistake.
  • Avoid using cracked or untrusted software. Trojans are often spreaded as a part of cracked products, possibly as a “patch” preventing the license check. Understandably, potentially dangerous programs are very hard to tell from trustworthy software, because trojans sometimes have the functionality you seek. Try searching for information on this program on the anti-malware forums, but the optimal solution is not to use such programs at all.

FAQ

🤔 How can I open ".MuskOff" files?Is it possible to open“.MuskOff” files?

Negative. That is why ransomware is so frustrating. Until you decode the ".MuskOff" files you will not be able to access them.

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

It's good if you have fаr-sightedly saved copies of these important files elsewhere. Otherwise, you might try to employ System Restore. The only question is whether you have saved any Restore Points that would be helpful now. The rest of the methods require patience.

🤔 What to do if the Muskoff malware has blocked my PC and I can't get the activation key.

🤔 What could help the situation right now?

Some of the blocked data 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 may have shared images or videos with your friends or relatives. Just ask them to send those images back to you.
  • If you have initially downloaded any of your files from the Web, you can try doing it again.
  • Your messengers, social networks pages, and cloud drives might have all those files too.
  • Maybe you still have the needed files on your old PC, a notebook, cellphone, external storage, etc.

USEFUL TIP: You can employ file recovery programs2 to retrieve your lost information since ransomware arrests the copies of your files, deleting the authentic ones. In the video below, you can learn how to recover your files with PhotoRec, but be advised: you can do it only after you eradicate the virus with an anti-malware program.

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Brendan Smith

References

  1. My files are encrypted by ransomware, what should I do now?
  2. Here's the list of Best Data Recovery Software Of 2023.

About the author

Brendan Smith

Cybersecurity analyst covering malware families, suspicious files, and detection alerts. Brendan focuses on clear explanations of what a warning means, when it may be a false positive, and which cleanup steps are appropriate.

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