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RSA-4096 Ransomware. How to remove? (Uninstall guide)

removal by Jake Doevan - - | Type: Ransomware

RSA-4096 ransomware is a file-locking virus that uses strong encryption algorithm to take victim's files hostage

RSA-4096 ransomware
RSA-4096 is the encryption algorithm used by different ransomware to encrypt target files.

Questions about RSA-4096 Ransomware

RSA-4096 ransomware[1] is a malicious crypto-virus that relies on RSA cipher while trying to encrypt victims' files and convince them into paying the ransom. Previously, security experts reported that this malware is related to TeslaCrypt which had been spreading around since 2015 but was shut down by its developers in May 2016 when they released the decryptor[2] However, the virus has inspired several malware developers who have started using “All of your files were protected by a strong encryption with RSA-4096” message after encrypting targeted victim's files. This encryption model is very popular and can be used by any ransomware virus to lock down files and make them unusable.

SUMMARY
Name RSA-4096
Type Ransomware/encryption algorithm
Family TeslaCrypt
Cipher used RSA
File extensions used Random, e.g. .vvv, .ccc, etc.
Demanded ransom $500 in BTC (may vary depending on the version)
Danger Level High. Risk of monetary loss, as well as data loss
Distribution Spam emails, malicious websites, fake updates, etc.
Elimination Download and install Reimage or Malwarebytes

Initially, RSA-4096 ransomware was targeting video games – saved games, player profiles, custom maps and similar data was put into danger. Newer variants that rely on the same encryption method are targeting all kinds of data and are asking around $500 or more in bitcoins for files' decryption. Victims are typically informed about the requirement to pay the ransom via the ransom note which is saved in each of the affected folders.

RSA-4096 ransomware typically enters targeted machine via contaminated spam email attachments or malicious links, downloaded from hacked sites or fake updates, or can be brute-forced via poorly protected RDP configuration. The malware was also spread via the Angler Adobe Flash exploit.[3]  All these entry methods are preventable, as long as you are attentive enough. 

Further functionality of the virus

As soon as the virus enters the machine, it executes its payload and makes certain changes to system files, including registry entries. This allows it to boot up every time Windows is started. Then, ransomware scans the machine for files, including .pdf, .doc, .gif, .mp3, .txt and others. Program and system files are not touched. Unsurprisingly, the malware uses RSA-4096 encryption algorithm to encrypt files and hold them hostage. The public and private keys are generated. 

The data is encrypted by a public key and needs the private key to be encoded. Unfortunately, cybercriminals are hiding these keys on a secret server which is accessible only to them. Hackers abuse this situation and urge users to pay up for the decryptor. However, we do not recommend contacting crooks, as they can trick you into installing other malware, as well as ignore you completely, even after the payment is processed. Simply proceed with RSA-4096 ransomware removal, and then decode your files using official decryptor or third-party software.

Of course, the most secure way to recover files is by getting them back from a backup. It does not matter if the backup is virtual (cloud services, such as Dropbox or OneDrive) or an external drive can be used. Note that external drive should not be connected to the compromised machine before the virus is removed, as all files from a backup will be contaminated as well. Nevertheless, if you got infected, we suggest you remove RSA-4096 using reputable anti-malware software, such as Reimage or Malwarebytes.

The dropped ransom notes usually come in HTML or PNG formats and display a lengthy message. The following reads:

NOT YOUR LANGUAGE? USE https://translate.google.com

What happened to your files ?
All of your files were protected by a strong encryption with RSA-4096.
More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem)

How did this happen ?
!!! Specially for your PC was generated personal RSA-4096 KEY, both public and private.
!!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet.
Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server.

What do I do ?
So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BTC NOW, and restore your data easy way.
If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment.

For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below:
[Link]

If for some reasons the addresses are not available, follow these steps:
1. Download and install
2. After a successful installation, run the browser and wait for initialization.
3. Type in the address bar:
4. Follow the instructions on the site.

IMPORTANT INFORMATION:
Your personal pages:
[Link]

As we already mentioned, do not pay attention to any of these taunts and proceed with RSA-4096 ransomware removal immediately.

Ransomware spreads using spam mainly

Even if you take precautions and do not visit suspicious websites, malware, such as ransomware, can get executed on your computer by using clever social engineering tricks, such as phishing emails. Indeed, while some of the scams look fake and cheap (poor grammar and spelling, no logos, questionable email address, etc.), some of the spam emails distributed by bots hackers employ might be pretty convincing. 

Thus, do not be too trustful when it comes to suspicious emails. Always check the “From” address carefully, and generally do not open any attachments, such as pdf, txt, doc or other files. If you really need to know if the email is genuine, merely contact the company the alleged email is sent from and ask if it is legitimate.

Other distribution methods of ransomware include:

  • Poor passwords
  • File-sharing sites
  • Fraudulent downloads
  • Fake updates
  • No RDP protection
  • Exploit fits

Simply take care extra precautions, and you should be safe. Nevertheless, there is no 100% way to protect yourself. However, you can always improve your chances of avoiding malware by employing a security program, updating software on time, bypassing suspicious sites, and backing up your files frequently.

RSA-4096 ransom note
The ransom note of this kind of virus says: "All of your files were protected by a strong encryption with RSA-4096."

RSA-4096 ransomware removal requires special knowledge

Technically, there is a way to remove RSA-4096 virus manually. However, most people have no technical knowledge or skills to proceed with such operation. Keep in mind that this encryption algorithm is very complicated and cannot be solved without twi different keys: the public and private one. If you are a regular computer user, do not try guessing numbers yourself because there is almost no possibility that you will find the code that you need.

Nevertheless, you should also avoid contacting ransomware developers while trying to end up with RSA-4096 ransomware removal. Ransomware is a dangerous virus that is extremely prevalent. Thus, the anti-malware tool is the most reliable way while trying to get rid of malicious files. For that, we recommend installing Reimage or Malwarebytes that is capable of detecting all malicious files. If your anti-virus is blocked by malware, you can try booting the machine in Safe Mode with Networking (as explained below) or use System Restore. Then, run a full system scan. 

IMPORTANT: DO NOT try to recover your files before you are finished with malware elimination, as all your files will get encrypted again.

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
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Alternate Software
Malwarebytes
Alternate Software
Malwarebytes

To remove RSA-4096 Ransomware, follow these steps:

Remove RSA-4096 Ransomware using Safe Mode with Networking

Enter Safe Mode with Networking as follows:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove RSA-4096 Ransomware

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete RSA-4096 Ransomware removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove RSA-4096 Ransomware using System Restore

Get rid of RSA-4096  using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of RSA-4096 Ransomware. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that RSA-4096 Ransomware removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove RSA-4096 Ransomware from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by RSA-4096 Ransomware, you can use several methods to restore them:

Use Data Recovery Pro for file decryption

Although this software was originally designed to restore files that were accidentally deleted or damaged, it is known to help individuals whose data was encrypted by ransomware.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by RSA-4096 Ransomware ransomware;
  • Restore them.

Windows Previous Versions can sometimes help

If you had Windows Restore function enable before malware attack occurred, you can try this recovery method.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Try ShadowExplorer

ShadowExplorer is great if the virus did not delete shadow volume copies.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Use TeslaCrypt official decryptor

You can use TeslaCrypt decryption tool or this TeslaCrypt decryptor tool to get all your files back.

About the author

Jake Doevan
Jake Doevan - Computer technology expert

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References

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