FMU9D Virus Files of Ransomware — How to remove virus?

The Fmu9d virus belongs to the ransomware type of malicious agent. A harmful program of such sort encrypts all the data on your computer (photos, documents, excel sheets, audio files, videos, etc) and appends its extra extension to every file, creating the auw1_HOW_TO_DECRYPT.txt files in each folder with the encrypted files.

Fmu9d virus: what is known so far?

☝️ A strictly correct denomination for the Fmu9d would be “a ransomware-type malicious agent”.

The pattern of renaming is this: [random string].fmu9d. As a part of encryption, a file entitled, for example, “report.docx” will be renamed to “report.docx.3708BOUVbbYVO31rg08f88291Uchh3189.fmu9d”.

In every directory containing the encrypted files, a auw1_HOW_TO_DECRYPT.txt notebook document will be created. It is a ransom money note. It contains information on the ways of paying the ransom and some other information. The ransom note usually contains instructions on how to buy the decryption tool from the Fmu9d developers. That is it.

Fmu9d summary:

In the image below, you can see what a folder with files encrypted by the Fmu9d looks like. Each filename has the “.[random string].fmu9d” extension added to it.

How did my machine catch Fmu9d ransomware?

There is a huge number of possible ways of ransomware injection.

There are currently three most exploited methods for evil-doers to have the Fmu9d virus settled in your system. These are email spam, Trojan infiltration and peer networks.

If you open your mailbox and see emails that look like familiar notifications from utility services companies, delivery agencies like FedEx, Internet providers, and whatnot, but whose mailer is strange to you, be wary of opening those letters. They are most likely to have a ransomware file attached to them. Thus it is even riskier to open any attachments that come with letters like these.

As for the peer-to-peer file transfer protocols like torrents or eMule, the danger 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. So you’d better be using trustworthy websites. Also, it is a good idea to scan the directory containing the downloaded objects with the anti-malware utility as soon as the downloading is done.

How to remove the Fmu9d virus?

It is crucial to note that besides encrypting your data, the Fmu9d virus will most likely install the Azorult Spyware on your PC to seize your credentials to different accounts (including cryptocurrency wallets). The mentioned spyware² can derive your logins and passwords from your browser’s auto-filling data.

Sometimes racketeers would decrypt few of your files so you know that they really have the decryption program. Since Fmu9d virus is a relatively recent ransomware, security software engineers have not yet found a way to undo its work. Nevertheless, the anti-ransomware tools are frequently updated, so the effective countermeasure may soon arrive.

Sure thing, if the malefactors succeed in encoding victim’s essential data, the desperate person will probably comply with their demands. Nevertheless, paying to racketeers does not necessarily mean that you’re getting your blocked information back. It is still risky. After obtaining the ransom, the racketeers may deliver a wrong decryption code to the victim. There were reports about racketeers just vanishing after getting the money without even writing back.

The optimal countermeasure to ransomware is to have a system restore point or the copies of your critical files in the cloud disk or at least on an external drive. Of course, that might be not enough. The most important thing could be that file you were working on when it all went down. But at least it is something. It is also reasonable to scan your PC for viruses with the antivirus program after the system is rolled back.

There are other ransomware products, besides Fmu9d, that work similarly. For instance, Nnqp, Mljx, Hudf, and some others. The two major differences between them and the Fmu9d are the ransom amount and the method of encryption. The rest is the same: files become encoded, their extensions changed, ransom notes are created in each directory containing encrypted files.

Some fortunate victims were able to decrypt the blocked files with the aid of the free software provided by anti-ransomware developers. Sometimes the hackers mistakenly send the decryption code to the wronged in the ransom readme. Such an epic fail allows the victim to restore the files. But of course, one should never rely on such a chance. Make no mistake, ransomware is a tamperers’ instrument to lay their hands on the money of their victims.

How сan I avoid ransomware injection?

Fmu9d ransomware doesn’t have a endless power, so as any similar malware.

You can armour yourself from ransomware injection within several easy steps:

• Never open any emails from unknown mailboxes 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?). In case the email subject is likely something you are waiting for, check all elements of the suspicious letter carefully. A hoax email will always contain mistakes.
• Do not use cracked or untrusted programs. Trojan viruses are often distributed as an element of cracked products, most likely as a “patch” to prevent the license check. Understandably, potentially dangerous programs are very hard to tell from trustworthy software, as trojans may also have the functionality you need. Try searching for information on this software product on the anti-malware forums, but the best solution is not to use such software.

Reasons why I would recommend GridinSoft³

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 “.[random string].fmu9d” files?

There’s no way to do it, unless the files “.[random string].fmu9d” files are decrypted.

🤔 What should I do to make my files accessible as fast as possible?

If the “.[random string].fmu9d” files contain some really important information, then you probably have them backed up. In case you haven’t, there is still a chance that you do have a Restore Point from some time ago to roll back the whole system to the moment when it had no virus yet, but already had your files. There are other ways to beat ransomware, but they take time.

🤔 What actions should I take if the Fmu9d malware has blocked my PC and I can’t get the activation code.

🤔 What can I do right now?

Many of the encoded files might still be at your disposal

• If you sent or received your critical files through email, you could still download them from your online mailbox.
• You may have shared images or videos with your friends or family members. 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 downloading them again.
• Your messengers, social media pages, and cloud disks might have all those files as well.
• Maybe you still have the needed files on your old computer, a portable device, cellphone, memory stick, etc.

HINT: You can use file recovery utilities⁵ to retrieve your lost information since ransomware encodes the copies of your files, removing the authentic ones. In the video below, you can see how to recover your files with PhotoRec, but be advised: you won’t be able to do it before you eradicate the virus with an anti-malware program.

Also, you can contact the following governmental 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.

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