Home / Removal Guide / Ransomware / Djvu Virus / NUSAR Virus Removal Guide (+Decode .nusar files) – Djvu Ransomware

NUSAR Virus Removal Guide (+Decode .nusar files) – Djvu Ransomware

NUSAR Virus – Details

The NUSAR mean a ransomware-type infection. The infection comes from the Djvu ransomware family. NUSAR was elaborated specifically to encrypt all major file types. Once the file is encrypted people are unable to use them. NUSAR adds the “.nusar” extension for each file encrypted by it. For example, the file “myphoto.jpg“, once encrypted by NUSAR, will be renamed into “myphoto.jpg.nusar“. As quickly as the encryption is finished, NUSAR places a special text file into every folder containing the encrypted data.

The message given by NUSAR text file asking for the ransom is definitely the same as the statements given by other ransomware virus representatives coming from the Djvu family. It literally mentions that the information is encrypted which the only way to restore it is to use a an unique decryption key. Unfortunately, this is definitely true. The kind of cryptography mechanism applied by NUSAR is still not appropriately examined. Still, it is definitely certain that each victim may be given the specific decryption key, which is absolutely unique. It is difficult to restore the files without the key available.

Another technique of NUSAR is that the victims cannot get to the key. The key is kept on a specific server run by the frauds connected with NUSAR ransomware. To get the key and recover the important information people need to pay the ransom, which totals up to $980. To get the payment details users are instructed to contact the frauds through email or telegram. The alert also suggests that the users need to contact the NUSAR developers within 72 hours after the files encryption occurred. The message says that doing so users will get a 50% discount, so the ransom amount will fall to $490.

However, irrespective of the requested amount, people should stay away from paying the ransom. Cyber frauds are not fair, so they tend to completely disregard what their victims feel about the problem, even when the payment reaches their pockets. This is why paying the ransom normally does not provide any positive result and people simply lose their money for absolutely nothing.

We strongly advise that you do not contact these crooks and certainly do not transfer money into their accounts. It is said to admit that there are no utilities able to crack NUSAR ransomware and to recover the information data free of charge. Therefore, the just right decision is to recover the lost information from the available backup.

Virus Summary

Name NUSAR Ransomware
File Extension .nusar
Type Ransomware
Family Djvu
Short Description The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
Symptoms File encryption by the ransomware is performed by means of the AES and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special nusar extension to all the files modified by it.
Distribution Method Spam Emails, Email Attachments
Similar Infections Tro, Chech, Lotep
Removal Tool   GridinSoft Anti-Malware

Keep in mind that the web is now overwhelmed with threats that look comparable to NUSAR ransomware. It is similar Tro and many other ransomware-type threats. Harmful programs of such kind are typically elaborated to encrypt important data and to set forth the need before the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a similar algorithm to produce the distinct decryption key for files decryption.

Thus, as long as the ransomware is still being developed or has some hidden bugs, by hand recovering the information is just not feasible. The only way to prevent the loss of your crucial files is to regularly create backups of your important information.

Remember that even if you create such backups, they need to be placed into a special storage utility not connect to your main PC. You may use the USB Flash Drive or external hard disk drive for this purpose, or refer to the help of the cloud storage. If you keep your backup files on your common system they may be encrypted along with other files, so it’s certainly not a good storage location.

How did ransomware infect my PC?

There are several ways used by online scams to distribute NUSAR virus. Although it doubts how exactly NUSAR injects your system, there are some leaks through which it may penetrate the system:

  • integration with third-party apps, especially freeware;
  • spam emails from unknown senders;
  • websites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Frequently NUSAR virus might exist as some legitimate software, for instance, in the pop-ups advising users to execute some essential software updates. This is the common trick used by online scams to persuade people into downloading and installing NUSAR infection manually, by means of their direct participation in the installation process.

In addition, the criminals might refer to various e-mail spam strategies to inject destructive codes into Windows PC. So, they may refer to to sending unsolicited spam emails with tricky notices promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some video, documents, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may severely harm the system. Fictitious Adobe Flash Player upgrade informs may result in NUSAR virus injection. When it comes to the cracked applications, these illegally downloaded programs may also contain destructive codes leading to NUSAR secret installation. Lastly, injection of NUSAR may occur by means of Trojans that secretly get injected into the system and set up destructive utilities without the user’s approval.

Is there any method to avoid the injection of NUSAR ransom virus?

Despite the fact that there is no 100% guarantee to avoid your PC from getting infected, there are some pieces of recommendations we wish to share with with you. First of all, be extremely cautious when you surf the web and specifically while downloading complimentary programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Remember that some freeware installers may include other unwanted utilities in the package, so they may be malicious. Make sure that your current antivirus software and your entire operating system is always appropriately updated.

Obviously, downloading pirated software is illegal and may lead to essential damage to be made for your system. Hence, stay away from downloading cracked software. You are also strongly advised to reconsider your existing security software and perhaps change to another security solution that can render better services of defending your computer.

Below please find the quotation from the NUSAR note file:

ATTENTION!
Don't worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
https://we.tl/t-26O6Irjllx
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
To get this software you need write on our e-mail:
gorentos@bitmessage.ch
Reserve e-mail address to contact us:
varasto@firemail.cc
Our Telegram account:
@datarestore
Your personal ID:
-

Screenshot of files with “.nusar” extension added by the ransomware:NUSAR Ransomware - encrypt files with .nusar extension

Use GridinSoft Anti-Malware to remove NUSAR ransomware from your computer

1.Download GridinSoft Anti-Malware.

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

  GridinSoft Anti-Malware

2. Double-click on the setup file.

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

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. 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.
GridinSoft Anti-Malware Scan Result

5

About Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

Check Also

Eugifts2.space fix

What Is Eugifts2.space? Eugifts2.space and also various other undesirable websites might begin turning up on …

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.