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Crypt0r ransomware. How to remove? (Uninstall guide)

removal by Alice Woods - - | Type: Ransomware

Crypt0r ransomware – a new crypto malware string that implements EternalBlue exploit

Crypt0r ransomware
Crypt0r is a new string of ransomware infections that have several similarities to NotPetya and WannaCry

Crypt0r is a new ransomware family which was analyzed by Carbon Black security researchers.[1] According to researchers, the new strain of malware is relatively similar to the infamous WannaCry and NotPetya ransomware viruses because it has multiple similar functions, as well as implemented EternalBlue exploit. After performing multiple modifications to system files, Crypt0r ransomware scans the device for personal files, such as .jpg, .mp3, .avi, .html, .doc, .txt and many others. Once detected, the malware encrypts the data with the help of RSA and AES encryption algorithms and modifies files, making them unusable. To recover the access, victims are urged to contact cybercrooks via decrypt0r-help@protonmail.com – the email is included inside the ransom note _HELP.txt, which is dropped into each of the affected folders. Crypt0r virus uses a random generator for file extensions, for example, .qqjuBOaf, .2lwnPp2B, or .aqhATfjK.

Name Crypt0r
Type Ransomware
Encryption algorithm RSA and AES
Similar malware WannaCry, NotPetya
Related files crypt0r-mutex, notepad.vbs
File extension Random combination of 8 characters
Ransom note _HELP.txt
Contact decrypt0r-help@protonmail.com
Elimination Use security software like Reimage or SpyHunterCombo Cleaner

In the first stages of the infection, Crypt0r ransomware copies notepad.vbs file into the Temp folder. It contains instructions written in Visual Basic script language and is later executed with the help of cmd.exe process, consequently removing Shadow Volume Copies. Due to this, users are unable to recover personal files after Crypt0r ransomware removal.

After system modification, Crypt0r ransomware contacts the C2[2] server with the help of eleven hard-coded .onion addresses via TOR network. It attempts to connect to the remote server in an endless loop until the connection is established, and then sends victim's ID and the encryption key to hackers.

Finally, Crypt0r virus drops a brief ransom note:

All your files and documents are encrypted by Crypt0r.

We provide a decryption service. If you need our help, contact our customer service via mail:

decrypt0r-help@protonmail.com

All we need is your personal service ID: 

Experts do not recommend contacting cybercriminals, as they might simply ignore victims, even after the payment in Bitcoin or other cryptocurrency is transferred. Additionally, such act would prove Crypt0r ransomware authors that ransomware works, and it will consequently encourage them to produce more dangerous viruses.

Therefore, you should remove Crypt0r ransomware from your computer as soon as possible, and only then proceed with file recovery. You can use anti-malware software that is capable of detecting the threat – we recommend using Reimage pr SpyHunterCombo Cleaner.[3] 

While there is a low chance of recovering your data without a personal key or backups, you can always try third-party software. Additionally, security researchers are always working on free decryptors, and new tools are being released for different ransomware viruses over time.

Lastly, Crypt0r ransomware is equipped with the EternalBlue MS17-010 exploit,[4] which was also used by WannaCry. Exploits allow cybercriminals to execute code remotely, so patching your software is essential.

Follow these simple tips if you want to protect your PC from ransomware viruses

Ransomware developers typically use multiple different distribution techniques to ensure the virus will affect as many victims as possible. Therefore, while browsing the internet, there are several things to look out for in order to avoid unwanted infections.

One of the best-known tactics to deliver ransomware is spam emails. Crooks often employ bots to send out thousands of phishing emails to potential victims. These messages either include a contaminated attachment or a malicious link. Therefore, be careful with all the emails from unknown sources – open them if you are sure they are legitimate.

Another ransomware distribution method which is becoming increasingly popular among cybercriminals is brute-force attacks. They use a preset list of most commonly used passwords and use a Remote Desktop Protocol to inject malware manually. Thus, use secure passwords an all your accounts, and also make use of a VPN.

Other tips would include:

  • Employ anti-malware software and keep it up to date;
  • Patch software as soon as updates are available;
  • Avoid visiting high-risk sites, such as torrent, file-sharing, porn, gambling, etc.;
  • Enable the ad-blocking plugin;
  • Avoid internet connections that are not secured (HTTP instead of HTTPS).

Remove Crypt0r ransomware with the help of security software ASAP

Be aware that ransomware viruses can also travel with the help of backdoor- a specific malicious software that is created to download and install other malware, such as ransomware. For that reason, Crypt0r virus might be not the only infection present on your machine, which can result in personal information disclosure or even identity theft.

Thus, do not risk it and scan your device with reputable anti-virus software – it will be able to detect all the infections and remove Crypt0r ransomware in the process. Note that malware can hinder the operation of security application. In such a case, enter Safe Mode with Networking and perform Crypt0r ransomware removal from there.

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Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
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.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with SpyHunter.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Crypt0r virus, follow these steps:

Remove Crypt0r using Safe Mode with Networking

To remove Crypt0r virus from your device without disturbances, follow these steps to enter Safe Mode with Networking:

  • 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 Crypt0r

    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 Crypt0r removal.

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

Remove Crypt0r using System Restore

System Restore can also help you to get rid of the virus:

  • 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 Crypt0r. 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 Crypt0r removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Crypt0r 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 Crypt0r, you can use several methods to restore them:

Make use of Data Recovery Pro when trying to get files back

Initially, Data Recovery Pro is created to recover accidentally deleted or corrupted files. However, researchers noticed that it could sometimes help users whose data were affected 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 Crypt0r ransomware;
  • Restore them.

Windows Previous Versions feature might be useful

The method requires you to have System Restore enabled (before the infection), and it can also restore individual files, so recovery of large amounts of data might be impossible.

  • 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 when trying to recover files encrypted by Crypt0r

As we mentioned above, ransomware performs Shadow Volume removal upon infiltration. However, the virus might fail to do so. Then ShadowExplorer will be able to recover all of 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.

No decryptor is available yet

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Crypt0r and other ransomwares, use a reputable anti-spyware, such as Reimage, SpyHunterCombo Cleaner or Malwarebytes Malwarebytes

About the author

Alice Woods
Alice Woods - Likes to teach users about virus prevention

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