Onion3Cry ransomware / virus (Virus Removal Instructions) - Bonus: Decryption Steps

Onion3Cry virus Removal Guide

What is Onion3Cry ransomware virus?

Onion3Cry ransomware uses HiddenTear's code to extort computer users

Onion3Cry ransomware

Onion3Cry ransomware is a HiddenTear-based[1] computer virus that attempts to prevent the victim from reaching files stored on a computer. Once installed, it damages victim’s files and adds .onion3cry-open-DECRYPTMYFILES extension to their file names. Finally, the virus displays a lock screen called onion3 crypt v.3 that says all files were encrypted.

To recover corrupted data, the virus suggests writing to onion33544@india.com. Also, the malicious program urges to write to the provided email within 12 hours otherwise all data will be lost for good.

Onion3Cry virus suggests buying “Black decryptor,” a tool which is supposed to restore all encrypted data for the victim. However, we do not recommend buying this tool no matter what. First of all, technical details suggest that Onion3 virus is a poorly coded computer program and that could mean that the decrypter might be buggy as well. As a result, you might not recover your files at all.

Researchers suggest that this malicious program spreads in the form of a fake Portuguese updater[2] which displays the following message while encrypting all files in the background:

Obtendo atualizações
isso pode levar
alguns minutos
Verificando se ha atualizações …..

If such message appeared on your screen, shut down your computer as soon as possible and disable any Internet connections available. This way, you might succeed to prevent the ransomware from corrupting your data. Finally, remove Onion3Cry virus using instructions we provided.

Although Onion3Cry removal should not be complicated since it is not the most dangerous ransomware virus available, you should still take it seriously. Please use an up-to-date and reliable anti-spyware software. We recommend choosing ReimageIntego, although the choice is yours. You can also find some useful software reviews on our Software page.

Onion3Cry virusOnion3Cry virus encrypts files and adds .onion3cry-open-DECRYPTMYFILES extension to them.

Distribution of deceptive malware

Onion3Cry malware can arrive at your computer right after opening a fraudulent email attachment, so you have to inspect each virtual message you receive carefully. Udenvirus.dk says[3] that nowadays, criminals can deceive unsuspecting victims by spoofing email addresses, using official logos and composing convincing messages that claim the attached file is an invoice, bill or subpoena.

Besides, scammers can bundle such malicious software alongside illegal programs you can download from illegal websites. To put it differently, we do not recommend you to try to download software cracks, keygens and similar programs meant to install licensed versions of legitimate software illegally.

Users seeking for free full-version software are the primary targets for cybercriminals. They can fill such software bundles with malicious components and trick the victim into installing them alongside the illegal software-cracking programs.

Remove Onion3Cry file-encrypting virus now

You do not have to be a professional IT expert to remove Onion3Cry virus. To kill components of the malicious software, you have to prepare your computer using instructions provided below the article and run an updated anti-malware software.

We highly recommend one of the malware wipers listed below the article – our team has tested them and was convinced that these are capable of deleting all kinds of malware and spyware from computers quite easily.

Onion3Cry removal requires a system reboot into Safe Mode with Networking state. The instructions provided below explain how to complete this task.

do it now!
Reimage Happiness
Intego Happiness
Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of Onion3Cry virus. Follow these steps

Manual removal using Safe Mode

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment. 

Windows 7 / Vista / XP
  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. – it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list. Windows 7/XP
Windows 10 / Windows 8
  1. Right-click on Start button and select Settings.
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
  6. Select Troubleshoot. Choose an option
  7. Go to Advanced options. Advanced options
  8. Select Startup Settings. Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking. Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following:

    Temporary Internet Files
    Recycle Bin
    Temporary files

  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):


After you are finished, reboot the PC in normal mode.

Remove Onion3Cry 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 Onion3Cry. 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 ReimageIntego and make sure that Onion3Cry removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Onion3Cry from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

Usually, Hidden-Tear based ransomware viruses prove to be programmed poorly, so sometimes it is possible to restore files encrypted by them. You can find some data recovery options below.

If your files are encrypted by Onion3Cry, you can use several methods to restore them:

Test Data Recovery Pro capabilities

You can try a data recovery software called Data Recovery Pro. Instructions on how to use it are given below.

  • 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 Onion3Cry ransomware;
  • Restore them.

Test HiddenTear decryption tool

Since Onion3Cry malware is created using HiddenTear's code, the decryptor for HiddenTear might work. You can download HiddenTear decryptor for free.

You can also use this decrypter by Michael Gillespie. Before using this decrypter, brute-force the decryption key using HiddenTear Brute Force tool.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Onion3Cry and other ransomwares, use a reputable anti-spyware, such as ReimageIntego, SpyHunter 5Combo Cleaner or Malwarebytes

How to prevent from getting ransomware

Stream videos without limitations, no matter where you are

There are multiple parties that could find out almost anything about you by checking your online activity. While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.

Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful Private Internet Access VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.

Data backups are important – recover your lost files

Ransomware is one of the biggest threats to personal data. Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.

While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as Data Recovery Pro can also be effective and restore at least some of your lost data.

About the author
Lucia Danes
Lucia Danes - Virus researcher

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