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Aurora ransomware. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Ransomware

Aurora ransomware is a malicious program designed to encrypt files

Aurora ransomware

Aurora virus is atypical ransomware[1] that is used for blackmailing computer users. The virus encrypts files with a strong encryption cipher and appends .Aurora file extension which makes data unable to open. Then it delivers six copies of ransom notes. However, the main principle remain s the same. Victims have to send an email to anonimus.mr@yahoo.com and wait until crooks respond with the size of the ransom.

Overview of the cyber threat
Name Aurora
Type Ransomware
Cryptography DES
Appended extension .Aurora
Ransom note

HOW_TO_DECRYPT_YOUR_FILES.txt,
HOW_TO_DECRYPT_YOUR_FILES2.txt,
HOW_TO_DECRYPT_YOUR_FILES3.txt, 
HOW_TO_DECRYPT_YOUR_FILES4.txt, 
HOW_TO_DECRYPT_YOUR_FILES5.txt, 
HOW_TO_DECRYPT_YOUR_FILES6.txt

Contact email address

anonimus.mr@yahoo.com

Size of the ransom Unknown
Distribution Malicious email attachments, malvertising, fake downloads/updates
Decryption A safe and free decryptor is not available yet. Full recovery is possible from backups only

To uninstall Aurora virus, install Reimage and run a full system scan

Aurora ransomware targets English-speaking users this means that the virus quickly spreads around the world via malicious spam emails or using other strategies. Typically, the executable is dropped when a user opens an obfuscated attachment. Immediately it starts data encryption procedure which ends up with the installation of ransom notes:

  • HOW_TO_DECRYPT_YOUR_FILES.txt
  • HOW_TO_DECRYPT_YOUR_FILES2.txt
  • HOW_TO_DECRYPT_YOUR_FILES3.txt
  • HOW_TO_DECRYPT_YOUR_FILES4.txt
  • HOW_TO_DECRYPT_YOUR_FILES5.txt
  • HOW_TO_DECRYPT_YOUR_FILES6.txt

However, the main message of authors of Aurora ransomware virus is to threaten users and make them pay the ransom in exchange for decryption software. According to the ransom note, the malware uses RSA encryption; however, there’s no proof of that. It seems that a virus uses DES algorithm.

We STRONGLY RECOMMEND you NOT to use any “decryption tools”. 
These tools can damage your data, making recover IMPOSSIBLE. 
Also, we recommend you not to contact data recovery companies. 
They will contact us, buy the key and sell it to you at a higher price. 
If you want to decrypt your files, you have to get RSA private key. 

As you can see, they do not provide the information how much money they might want for file recovery procedure. It is possible that the size of the ransom can change based on the importance or size of the encrypted files. In some cases, the payment is set based on how fast you do that.

However, it’s unknown if authors of .Aurora file virus actually have needed tools for the decryption. Hence, you might lose the money. Also, they can blackmail you after the payment and ask for more money; otherwise, they might leak or delete encrypted files.

Researchers from NoVirus.uk[2] also note that many victims are left alone after hackers receive the money. For these reasons, you should not deal with cyber criminals. Focus on the most important part after the attack – Aurora ransomware removal.

This task has to be completed with reputable anti-malware software. Crypto-viruses are complicated and hazardous cyber threats, so they cannot be properly eliminated without the damage. If you need a professional tool to remove Aurora ransomware virus from the computer, choose Reimage.

Lack of knowledge online lead to ransomware infection

The typical ransomware is spreading via spam emails[3] that contain an infected attachment. Many users are still unaware of possible dangers that might be hiding in their inboxes, so they too often open an obfuscated file.

Often these infected files have malicious macro commands and users are often asked to enable them as soon as they open MS Office document. This trick is usually successful because people do not think that regular Word file can be malicious.

However, there are a couple of other methods that can be used for spreading file-encrypting malware, for instance:

  • malicious ads;
  • fake software update alerts;
  • trojans;
  • exploit kits;
  • insecure RDPs.

Nowadays it’s very important to follow cyber security tips in order to avoid getting your files locked. Hence, watch your clicks and downloads, and make sure that your computer and programs are up-to-date.

The guidelines on how to eliminate Aurora virus

Aurora ransomware removal is crucial for your system because ransomware may have installed a dozen of files or programs that are running on Windows OS. Hence, the system becomes vulnerable and can get hit by another virus as well.

Of course, virus elimination does not bring back your files. Security programs needed for the removal are not designed to decrypt data. Other tools are needed to complete this task. However, we want to stress out that a specific decryptor is not released yet.

Once you remove Aurora virus with Reimage, Malwarebytes Anti Malware or your preferred anti-malware tool, you can restore your data from backups or try to retrieve some data using additional methods. If you have problems with the elimination or want to try our suggested recovery options, check the instructions below. 

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Aurora ransomware. 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.
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To remove Aurora virus, follow these steps:

Remove Aurora using Safe Mode with Networking

In some cases, ransomware blocks security software in order to remain on the system. However, this guide will help to avoid this problem:

  • 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 Aurora

    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 Aurora removal.

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

Remove Aurora 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 Aurora. 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 Aurora removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Aurora 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 Aurora, you can use several methods to restore them:

Try Data Recovery Pro

This tool is created to recover files that are deleted or corrupted. However, it might be helpful after the ransomware attack too:

Take advantage of Windows Previous Versions feature

Victims, who had System Restore enabled before Aurora ransomware attack, can try to copy individual files by following this guide:

  • 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”.

Use ShadowExplorer

It's unknown if malware deletes Shadow Copies or not. If they are left on the system, get this tool and recover your data:

  • 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.

The decryptor for Aurora ransomware is not released yet

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Aurora and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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