NMO Virus Ransomware (.NMO Files) — dr.nemo@tutanota.com

Written by Brendan Smith
The Nmo virus belongs under the Dharma ransomware family. Malware of such sort encrypts all the data on your PC (images, documents, excel sheets, music, videos, etc) and adds its own extension to every file, leaving the info.txt files in every directory containing encrypted files.
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What is known about the Nmovirus?

☝️ A scientifically correct denomination for the Nmo would be “a Dharma family ransomware malicious agent”.

The pattern of renaming is this: id-xxxxxx.[contact-email].NMO. After the encryption, a file entitled, for instance, “report.docx” will be changed to “report.docx.id-9ECFA84E.[dr.nemo@tutanota.com].NMO”.

In each directory containing the encoded files, a info.txt text document will appear. It is a ransom money note. It contains information about how to pay the ransom and some other remarks. The ransom note usually contains instructions on how to buy the decryption tool from the racketeers. You can obtain this decrypting software after contacting dr.nemo@tutanota.com via email. That is it.

Nmo summary:
NameNmo Virus
Ransomware family1Dharma ransomware
Extension.NMO
Ransomware noteinfo.txt
Contactdr.nemo@tutanota.com
Detection2Ransom:Win32/StopCrypt.PCD!MTB, Win32/GenKryptik.FXSG, Trojan:Win32/Zombie.NBJ!MTB
SymptomsYour files (photos, videos, documents) have a .NMO extension and you can’t open them.
Fix ToolSee If Your System Has Been Affected by Nmo virus

The info.txt file coming in package with the Nmo ransomware states the following:

all your data has been locked us
You want to return?
write email dr.nemo@tutanota.com or mr.helper@gmx.com 

In the image below, you can see what a folder with files encrypted by the Nmo looks like. Each filename has the “.NMO” extension appended to it.

Nmo Virus - encrypted .NMO files

That is how encrypted “.NMO” files look.

How did my machine catch Nmo ransomware?

There are plenty of possible ways of ransomware infiltration.

Nowadays, there are three most exploited methods for hackers to have ransomware settled in your digital environment. These are email spam, Trojan injection and peer-to-peer file transfer.

If you open your inbox and see letters that look like familiar notifications from utility services companies, delivery agencies like FedEx, web-access providers, and whatnot, but whose addresser is strange to you, beware of opening those emails. They are most likely to have a malicious file enclosed in them. So it is even more dangerous to download any attachments that come with letters like these.

Another option for ransom hunters is a Trojan file model3. A Trojan is an object that infiltrates into your machine disguised as something legal. Imagine, you download an installer for some program you want or an update for some software. But what is unboxed reveals itself a harmful program that encodes your data. Since the update file can have any name and any icon, you’d better be sure that you can trust the resource of the stuff you’re downloading. The optimal way is to trust the software companies’ official websites.

As for the peer-to-peer networks 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 folder containing the downloaded objects with the antivirus as soon as the downloading is done.

How to remove the Nmo virus?

It is crucial to inform you that besides encrypting your files, the Nmo virus will most likely install the Azorult Spyware on your computer to get access to credentials to different accounts (including cryptocurrency wallets). The mentioned program can derive your logins and passwords from your browser’s auto-filling cardfile.

Often racketeers would unblock several of your files so you know that they do have the decryption program. Since Nmo virus is a relatively new ransomware, anti-malware engineers have not yet found a method to reverse its work. However, the anti-ransomware instruments are frequently updated, so the solution may soon be available.

Sure thing, if the malefactors do the job of encoding victim’s essential files, the desperate person will most likely comply with their demands. However, paying to racketeers gives no guarantee that you’re getting your data back. It is still dangerous. After obtaining the money, the racketeers may deliver a wrong decryption key to the victim. There were reports of hackers simply vanishing after getting the money without even writing back.

The optimal solution against ransomware is to have aan OS restore point or the copies of your essential files in the cloud storage or at least on an external drive. Of course, that might be insufficient. The most crucial thing could be that one you were working on when it all happened. Nevertheless, it is something. It is also wise to scan your drives with the anti-malware utility after the OS is rolled back.

Nmo 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 Eiur, Hhwq, Hkgt, and some others. The two basic differences between them and the Nmo are the ransom amount and the encoding method. The rest is the same: documents become encrypted, their extensions changed, ransom notes are found in each folder containing encoded files.

Some lucky victims were able to decode the arrested files with the aid of the free tools provided by anti-ransomware specialists. Sometimes the criminals mistakenly send the decoding key to the wronged in the ransom readme. Such an extraordinary fail allows the victim to restore the files. But naturally, one should never expect such a chance. Remember, ransomware is a bandits’ tool to pull the money out of their victims.

How do I avoid ransomware injection?

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

You can defend your PC from its attack in several easy steps:

  • Never open any letters from unknown mailboxes with unknown addresses, or with content that has nothing to do with something you are expecting (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 dubious letter carefully. A fake email will always have mistakes.
  • Avoid using cracked or untrusted programs. Trojan viruses are often shared as a part of cracked products, most likely under the guise of “patch” to prevent the license check. But untrusted programs are very hard to distinguish from reliable software, as trojans may also have the functionality you need. Try searching for information about this software product on the anti-malware forums, but the best way is not to use such software.
  • And to be sure about the safety of the files you downloaded, use GridinSoft Anti-Malware. This program will be a powerful defense for your personal computer.
Reasons why I would recommend GridinSoft4

There is no better way to recognize, remove and prevent ransomware than to use an anti-malware software from GridinSoft5.

Download Removal Tool.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your PC for Nmo infections and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Frequently Asked Questions

🤔 Is it possible to open “.NMO” files?

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

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

If the “.NMO” files contain some really important information, then you probably have them backed up. Otherwise, you might try to employ System Restore. The only question is whether you have saved any Restore Points that would be helpful now. There are other ways to beat ransomware, but they take time.

🤔 Will GridinSoft Anti-Malware remove all the encrypted files alongside the Nmo virus?

No way! The encrypted files are not harmful, so they won’t be deleted.

GridinSoft Anti-Malware will remove actual infections from your system. The malware that has infiltrated your PC is must be still active and it scans your system periodically to encrypt any new files you might create on your computer after the attack. As it has already been said, the Nmo malware comes with the company. It installs backdoors and keyloggers that can take your account passwords by trespass and provide malefactors with easy access to your system after some time.

🤔 What should I do if the Nmo malware has blocked my PC and I can’t get the activation code.

In such a case, you need to prepare a flash memory card with a previously installed Trojan Killer. Use Safe Mode to do the cleaning. The point is that the ransomware runs automatically as the system launches and encodes any new files created or imported into your machine. To suppress this function – use Safe Mode, which allows only the essential programs to run automatically. Consider reading our manual on booting Windows in Safe Mode.

🤔 What could help the situation right now?

Many of the encrypted files might still be within your reach

  • If you exchanged your critical files by 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 post those images back to you.
  • If you have initially got any of your files from the Internet, you can try doing it 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 PC, a portable device, phone, external storage, etc.

USEFUL TIP: You can employ data recovery utilities6 to retrieve your lost information since ransomware encodes the copies of your files, removing the original ones. In the tutorial below, you can see how to recover your files with PhotoRec, but remember: you won’t be able to do it before you eradicate the ransomware itself with an anti-malware program.

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

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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Brendan Smith
How to Remove NMO Ransomware & Recover PC

Name: NMO Virus

Description: NMO Virus is a ransomware-type infections. This virus encrypts important personal files (video, photos, documents). The encrypted files can be tracked by a specific .NMO extension. So, you can't use them at all.

Operating System: Windows

Application Category: Virus

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References

  1. My files are encrypted by ransomware, what should I do now?
  2. Encyclopedia of threats.
  3. You can read more on Trojans, their use and types in the Trojan-dedicated section of GridinSoft official website.
  4. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  5. More information about GridinSoft products: https://gridinsoft.com/products
  6. Here are the top 10 file recovery tools of 2021.

About the author

Brendan Smith

Journalist, researcher, web content developer, grant proposal editor. Efficient and proficient on multiple platforms and in diverse media. Computer technology and security are my specialties.

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