What Is YRNB Virus?
Yrnb virus file is the name of a dangerous ransomware virus that belongs to the STOP/DJVU family of cryptoviruses. This infection’s main purpose is to get victims to pay ransom in BitCoin or other cryptocurrencies if you want to use your files once more. The main idea of viruses, like yrnb is to use a sophisticated encryption to make your files no longer openable and then drop the _readme.txt ransom note to get your to follow the instructions in it.
Read this article to learn more about the YRNB ransomware and how you can remove it and try to get your files to work once more.
YRNB Summary
Name | yrnb also known as Trojan.GenericKD.35978248, Trojan.Win32.Stop.j!c, Trojan.Ransom.Stop, Trojanransom.Stop, A Variant Of Win32/Kryptik.HIMQ, Trojan-Ransom.Win32.Stop.qq |
File Extension | .yrnb |
Type | Ransomware, Cryptovirus |
Short Description | The ransomware encrypts files on your computer system and demands ransom to be paid to allegedly recover them. |
Symptoms | This variant of STOP ransomware will encrypt your files by appending the .yrnb extension to them. |
Ransom Demanding Note | _readme.txt |
Distribution Method | Spam Emails, Email Attachments, Torrent Files |
Detection Tool |
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YRNB Virus – More Information
The yrnb ransomware can enter your computer in a variety of methods. These are the same tactics used by other variants of STOP/DJVU Ransomware, like the recently detected Reig, Ygkz and Plam ones.
There are two primary ways via which applications, like yrnb can end up on your PC:
- If yrnb is sent to you as e-mail documents that claim to be legitimate, like invoices, aircraft tickets, and others.
- If the virus is masked as an app offered free for download online, but instead of a free app, you download and run the infection.
Once this malware has already infected your machine, it may connect to the server of the criminals who are controlling it. This virus may then drop the malware files on your computer. These may be located with random names in the following Windows directories:
- %ProgramData%
- %Windows%
- %System%
- %system32%
- %Roaming%
- %Local%
- %AppData%
- %LocalLow%
- %Temp%
Among the files dropped by this nasty virus is the _readme.txt ransom note which contains the ransom demands made by the criminals. These demands ask to contact the crooks and negotiate the payment:
The virus has several different capabilities once it infects your computer system. It may perform the following activities besides encrypting files:
- Establish a connection with the cyber-criminals running it.
- Creating Windows registry entries in the “Run” or “RunOnce” Registry sub-keys.
- Run as administrator.
- Obtaining read and write authorizations.
- Analyzing If it has infected your computer system previously and if so deletes itself.
.yrnb Files
yrnb‘s main activity revolves around your files. The virus may scan for and attack the following file types:- Videos.
- Pictures.
- Databases.
- Archives.
- Anything conserved in a USB or other drive.
- Back-ups.
- Docs.
- Music.
Since it is a STOP/DJVU ransomware variant, this malware may begin to encrypt files via the AES encryption algorithm, also known as Advanced Encryption Standard. This algorithm generates a unique decryption key and the files cannot be opened unless you pay BitCoin for such a decryptor.
We do not advise paying the criminals behind this virus, since they cannot be trusted and to focus on removing it and trying to restore your files via other means.
Remove Yrnb Virus and Try to Restore Files
If you aim to get rid of Yrnb ransomware compeltely from your computer, we strongly recommend that you follow the removal instructions we have prepared for you below. These instructions are created with the main purpose to help you detect and delete all of the different types of virus files belonging to this malware. For the best removal, we recommend that you use an advanced anti-malware software. Experts often work with this tool as it will make sure to help you remove all of the virus files of this ransomware automatically.
If you want to try and restore files, encrypted by Yrnb virus, be advised that variants of this malware family use different types of keys to encrypt your computer. If the key for this variant is offline key, then you have the ability to directly decrypt your files, using the Emsisoft Decryptor tool. If the keys are online, then you can backup the encrypted files and try the alternative methods for file recovery below. They are created with the main idea to help you try and restore as many files as possible, but they do not come with 100% guarantee.
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for yrnb with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall yrnb and related malware from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
Step 3: Clean any registries, created by yrnb on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by yrnb there. This can happen by following the steps underneath:
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Boot Your PC In Safe Mode to isolate and remove yrnb
Step 5: Try to Restore Files Encrypted by yrnb.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and yrnb aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
yrnb-FAQ
What is yrnb Ransomware?
yrnb is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
What Does yrnb Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does yrnb Infect?
Via several ways.yrnb Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
Another way you may become a victim of yrnb is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .yrnb files?
You can't without a decryptor. At this point, the .yrnb files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .yrnb files successfully, then do not despair, because this virus is still new.
Can I Restore ".yrnb" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .yrnb files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of yrnb Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate yrnb ransomware and then remove it without causing any additional harm to your important .yrnb files.
Can I Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can yrnb Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the yrnb Research
The content we publish on SensorsTechForum.com, this yrnb how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the yrnb ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.