The Nissenvelten virus belongs to the ransomware type of malicious agent. Ransomware of this type encrypts all the data on your PC (photos, documents, excel tables, music, videos, etc) and appends its extra extension to every file, creating the !nissenvelten!HOW_TO_RESTORE.log files in each directory containing encrypted files.
What is known about the Nissenveltenvirus?
☝️ A scientifically accurate description for the Nissenvelten would be “a ransomware infection”.
Nissenvelten adds its own .nissenvelten-sjj3hhut extension to the title of each encoded file. For instance, an image entitled “photo.jpg” will be renamed to “photo.jpg.nissenvelten-sjj3hhut”. Just like the Excel sheet named “table.xlsx” will become “table.xlsx.nissenvelten-sjj3hhut”, and so on.
In every directory that contains the encoded files, a !nissenvelten!HOW_TO_RESTORE.log text document will be created. It is a ransom money memo. It contains information on the ways of paying the ransom and some other information. The ransom note usually contains a description of how to buy the decryption tool from the racketeers. That is how they do it.
Nissenvelten outline:
| Name | Nissenvelten Virus |
| Extension | .nissenvelten-sjj3hhut |
| Ransomware note | !nissenvelten!HOW_TO_RESTORE.log |
| Detection | MSIL/Filecoder.LokiLocker.C, Ransom.LokiLocker, PWS:Win32/Ymacco.AA0A |
| Symptoms | Your files (photos, videos, documents) get a .nissenvelten-sjj3hhut extension and you can’t open them. |
| Fix Tool | See If Your System Has Been Affected by Nissenvelten virus |
In the image below, you can see what a directory with files encrypted by the Nissenvelten looks like. Each filename has the “.nissenvelten-sjj3hhut” extension appended to it.
An example of encrypted .nissenvelten-sjj3hhut files.
How did my machine catch Nissenvelten ransomware?
There are many possible ways of ransomware infiltration.
Nowadays, there are three most popular methods for criminals to have the Nissenvelten virus acting in your system. These are email spam, Trojan introduction and peer networks.
If you access your inbox and see emails that look like familiar notifications from utility services companies, delivery agencies like FedEx, web-access providers, and whatnot, but whose addresser is unknown to you, beware of opening those emails. They are very likely to have a harmful file attached to them. So it is even riskier to download any attachments that come with letters like these.
Another thing the hackers might try is a Trojan file scheme1. A Trojan is an object that gets into your computer pretending to be something different. For instance, you download an installer of some program you need or an update for some software. However, what is unpacked turns out to be a harmful agent that compromises your data. As the update wizard can have any name and any icon, you’d better be sure that you can trust the resource of the files you’re downloading. The optimal way is to trust the software companies’ official websites.
As for the peer networks like torrent trackers or eMule, the danger is that they are even more trust-based than the rest of the Web. You can never guess what you download until you get it. Our suggestion is that you use trustworthy resources. Also, it is reasonable to scan the directory containing the downloaded items with the anti-malware utility as soon as the downloading is complete.
How to remove the Nissenvelten virus?
It is important to inform you that besides encrypting your data, the Nissenvelten virus will most likely deploy the Azorult Spyware on your PC to seize your credentials to different accounts (including cryptocurrency wallets). The mentioned program can extract your credentials from your browser’s auto-filling data.
Often criminals would unblock few of your files to prove that they do have the decryption tool. As Nissenvelten virus is a relatively new ransomware, anti-malware engineers have not yet found a way to reverse its work. However, the decryption instruments are frequently updated, so the effective countermeasure may soon be available.
Understandably, if the tamperers succeed in encrypting victim’s critical data, the hopeless person will probably comply with their demands. However, paying to racketeers does not necessarily mean that you’re getting your blocked information back. It is still dangerous. After getting the ransom, the racketeers may send a wrong decryption key to the victim. There were reports of hackers just vanishing after getting the ransom without even bothering to reply.
The best solution against ransomware is to have aan OS restore point or the copies of your essential files in the cloud drive or at least on an external disk. Of course, that might be insufficient. Your most important thing could be that one you were working upon when it all happened. But at least it is something. It is also reasonable to scan your PC for viruses with the antivirus program after the system restoration.
Nissenvelten 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 Zaqi, Qqqw, Maak, and some others. The two main differences between them and the Nissenvelten are the ransom amount and the method of encryption. The rest is the same: files become encoded, their extensions altered, ransom notes emerge in every folder containing encrypted files.
Some lucky users were able to decode the blocked files with the aid of the free tools provided by anti-malware experts. Sometimes the racketeers mistakenly send the decryption code to the wronged in the ransom readme. Such an epic fail allows the victim to restore the files. But naturally, one should never rely on such a chance. Remember, ransomware is a bandits’ instrument to pull the money out of their victims.
How сan I avert ransomware injection?
Nissenvelten ransomware doesn’t have a superpower, so as any similar malware.
You can armour your computer from ransomware infiltration in several easy steps:
- Never open 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?). If the email subject is likely something you are waiting for, scrutinize all elements of the questionable email with caution. A fake letter will always contain a mistake.
- Never use cracked or untrusted software. Trojans are often distributed as a part of cracked products, possibly as a “patch” which prevents the license check. But dubious programs are very hard to distinguish from reliable software, as trojans may also have the functionality you need. You can try searching for information about this software product on the anti-malware forums, but the optimal solution is not to use such programs at all.
- 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 system.
Reasons why I would recommend GridinSoft2
There is no better way to recognize, remove and prevent ransomware than to use an anti-malware software from GridinSoft3.
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 computer.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your PC for Nissenvelten 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.
Click on “Clean Now”.
When the scan has completed, 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.
Frequently Asked Questions
🤔 How can I open “.nissenvelten-sjj3hhut” files?Are the “.nissenvelten-sjj3hhut” files accessible?
There’s no way to do it, unless the files “.nissenvelten-sjj3hhut” files are decrypted.
🤔 I really need to decrypt those “.nissenvelten-sjj3hhut” files ASAP. How can I do that?
If the “.nissenvelten-sjj3hhut” 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.
🤔 If GridinSoft deletes the Nissenvelten malware, will it also delete my files that were encrypted?
Of course not. Your encrypted files are no threat to your PC.
GridinSoft Anti-Malware will remove actual malware from your PC. The virus that has infiltrated your system is most likely still active and running scans periodically to arrest any new files you might create on your PC after the initial attack. As it has been said above, the Nissenvelten ransomware comes with the company. It installs backdoors and keyloggers that can steal your account credentials and provide criminals with easy access to your PC after some time.
🤔 What should I do if the Nissenvelten malware has blocked my PC and I can’t get the activation code.
In such a case, you need to prepare a memory stick with a previously installed Trojan Killer. Use Safe Mode to perform the procedure. The point is that the ransomware starts automatically as the system launches and encodes any new files created or imported into your machine. To stop this function – use Safe Mode, which allows only the vital programs to run automatically. Consider reading our manual on running Windows in Safe Mode.
🤔 And what should I do now?
Many of the encrypted files might still be at your disposal
- If you sent or received your critical files via email, you could still download them from your online mail server.
- You might have shared photographs or videos with your friends or relatives. Simply ask them to give those images back to you.
- If you have initially downloaded any of your files from the Web, you can try to do it again.
- Your messengers, social media pages, and cloud drives might have all those files too.
- It might be that you still have the needed files on your old computer, a notebook, mobile, flash memory, etc.
HINT: You can employ file recovery utilities4 to get your lost data back since ransomware encodes the copies of your files, removing the original ones. In the tutorial below, you can learn how to use PhotoRec for such a restoration, but remember: you can do it only after you remove the virus with an antivirus 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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Brendan SmithHow to Remove NISSENVELTEN Ransomware & Recover PC
Name: NISSENVELTEN Virus
Description: NISSENVELTEN Virus is a ransomware-type infections. This virus encrypts important personal files (video, photos, documents). The encrypted files can be tracked by a specific .nissenvelten-sjj3hhut extension. So, you can't use them at all.
Operating System: Windows
Application Category: Virus
User Review
( votes)References
- You can read more on Trojans, their use and types in the Trojan-dedicated section of GridinSoft official website.
- GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
- More information about GridinSoft products: https://gridinsoft.com/comparison
- Here are Top 10 Data Recovery Software Of 2023.
