Djvu VirusRansomwareRemoval Guide

Urnb Virus Removal Guide (+Decrypt .urnb files)

Urnb Virus – Details

Urnb is a malicious software application working as common ransomware. Michael Gillespie, the widely known malware researcher, first found this new name in the DJVU ransomware family.

Urnb was created for the sole function to encrypt all popular file types. Logically, as quickly as the file encryption is successfully accomplished, the users are unable to get access to them. Urnb ransomware includes its own “.urnb” to all the encrypted files. For example, the file “price_list.xls”, once crypted by Urnb, will be entitled as “price_list.xls.urnb”. Once the file encryption is achieved, Urnb puts its own unique text document (_readme.txt) into all the folders that keep the encrypted files.

The alert mentioned by _readme.txt asking for the random os really similar to the notifications provided by other ransomware dangers belonging to the DJVU family. The warning basically indicates that the data has been encrypted and the only option to get access to it is to use a distinct standalone key. Regretfully, this statement is definitely true.

The approach to encrypt the files used by Urnb is not completely researched. However, there is no doubt that each computer owner may be issued an unique decryption key, which is absolutely unique. It is very difficult to recuperate the data without the proper key in location.

“Don’t worry, you can return all your files!”, from _readme.txt message:

message from Urnb virus

One more peculiarity of the Urnb virus is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the complete control by the scoundrels who have actually released the Urnb virus into the world wide web. In order to acquire the key and restore the crucial data, the users are told to contact the scams via email or by telegram and to pay the ransom in the amount of $980.

The message also says that individuals ought to call the Urnb authors within 72 hours upon the minute of the data file encryption. The alert indicates that by doing so individuals will get a 50% discount rate, for that reason, the ransom amount falls to $490.

No matter what the amount of the ransom is, we strongly advise that you do not pay the ransom. There is no assurance that these online criminals will keep their promises, so they may not care at all what the victims feel about the encryption, even when the amount of the ransom is received into their accounts. Thus, paying ransom often does not result in an effective recovery. So, the users might simply lose their money for absolutely nothing.

Similarly, we prompt you not to contact the scams as they advise. Do not transfer money into their wallets. There are no applications that could break the Urnb virus or restore the data for free. Therefore, the only right choice is to bring back the data from possible backups (if offered).

Virus Summary

NameUrnb Ransomware
File Extensionurnb
TypeRansomware
FamilyDJVU
Short DescriptionThe 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.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .urnb extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Urnb Removal Tool   GridinSoft Anti-Malware
Urnb Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now filled with infections similar to the Urnb ransomware. For example, this specific hazard is basically similar to Brusaf and other ransomware-type infections. These damaging utilities have been developed in order to secure the crucial data and express the need for the users to pay the ransom. All these infections utilize the similar algorithm to create the specific key for successful information decryption.

Unless the Urnb ransomware is still under the advancement process or has got some hidden bugs, it is not possible to restore the information manually. Hence, the only working option to avoid the loss of your crucial data is to frequently maintain up-to-date backups of all your important files.

Another crucial piece of guidance is to keep the backups on unique storage not connected to your primary computer. For example, you may keep it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is extremely dangerous, since the backup might likewise be secured by the Urnb ransomware.

Leaks for the Urnb ransomware attack.

Urnb utilizes numerous courses to infiltrate the vulnerable computers. It is not specific what particular method was utilized in your case, however, the intrusion might happen by means of the following channels:

  • bundling with third-party programs, primarily free software;
  • spam emails from the unknown senders;
  • sites offering free hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Urnb virus might camouflage itself as some real application, for example, through the misleading informs requiring setup of some software application upgrade. This is the most common trick used by the scams to inject the Urnb ransomware files into the system. In this manner users partly take part in its setup, without plainly comprehending the threat.

Additionally, the frauds may send out unsolicited spam e-mail with challenging signals encouraging the people to open suspicious accessories or click on some download links, for instance, those motivating individuals to open specific images, text files, tax files and other info.

No doubt, opening these files or clicking on the malicious links might basically damage the system. Fake Adobe Flash Player upgrade alerts may result in the Urnb ransomware seepage. Similarly, downloading the split software application might additionally include the ransomware installer. The last however not the least, setup of Urnb might happen through some Trojan horses that might be set up stealthily into the system and without the user’s direct permission or even authorization.

Preventing the Urnb ransomware attack.

Obviously, there is no absolute assurance that your computer will be constantly devoid of any malware attacks, however, we want to share some helpful tips with you to make it much safer. Make certain to pay extremely attention while browsing the web and particularly while downloading cost-free programs. Do not open any dubious email accessories, particularly if the sender is not understood to you.

Do not forget that specific freeware installer may also contain some other extra apps in the package. These extra applications might be very destructive. It is of utmost significance to keep your anti-virus software application and your operating system in basic to be constantly effectively upgraded.

It is quite rational that downloading cracked programs is unlawful, nevertheless, in addition, such unapproved software use may also bring severe damage to your computer. Hence, do not download any broken programs. Plus, the fact that your present anti-virus did not secure the system from the Urnb ransomware is a good reason for you to reevaluate your options and change to another program that can render the protecting functions on a far better level.

Below please find the quotation from the Urnb text 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-2P5WrE5b9f
 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:
 restorealldata@firemail.cc
  
 Reserve e-mail address to contact us:
 gorentos@bitmessage.ch 

 Our Telegram account:
 @datarestore

Screenshot of files with “.urnb” extension added by the ransomware:”

Urnb Ransomware - encrypt files with .urnb extension

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

1.Download GridinSoft Anti-Malware.

You can get 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

Use Emsisoft Decryptor for restore urnb files

You can download Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

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.

Related Articles

Leave a Reply

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

Sending

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

Back to top button