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Remove CryTekk ransomware (Virus Removal Guide) - Decryption Steps Included

removal by Julie Splinters - - | Type: Ransomware

CryTekk ransomware is a virus that not only operates as an extortionist but also tries to direct users to spoofed PayPal payment page

CryTekk ransomware

CryTekk ransomware is a file locking virus that is based on HiddenTear open-source project. After the infiltration, malware performs several changes to the system and begins a scan, looking for personal files like pictures, documents, videos, audios, databases, etc. Once located, the cyber threat makes use of AES encryption to encode data and appends .locked file extension. Next, CryTekk ransomware contacts a remote server that is controlled by hackers to send the encryption key and upload a ransom note README.html onto victim's machine. The message from cybercriminals explains what happened to their personal files, and asks users to pay $40 in BTC and contact hackers via CryTekk@protonmail.com. This malware string is poorly written and can be decrypted. However, the “catch” is to make users disclosed their credit card details on a spoofed PayPal page.

Name CryTekk ransomware 
Type Ransomware
Extra element Phishing via spoofed PayPal page
Derivation HiddenTear
Cipher  AES
Ransom size $40 in BTC
Ransom note README.html
Contact CryTekk@protonmail.com
Decryptable? Yes
Elimination Use powerful anti-malware software
Damage removal Make use of Reimage Reimage Cleaner

While combining ransomware functionality with other threats (such as banking trojans, data-stealers,[1] cryptominers, etc.) is not uncommon, CryTekk ransomware authors added a new element that was never used before – phishing. In fact, the size of the ransom makes researchers believe that the main goal is not $40, but the credit card details disclosure, which would be used for unauthorized bank account use or could be sold on the Dark Web.[2]

CryTekk ransomware drops the ransom note that states:

YOUR FILES HAVE BEEN ENCRYPTED!
Dear victim:
Files have been encrypted! and Your computer has been limited!
To unlock your PC you must pay with one of the payment methods provided, we regularly check your activity of your screen and to see if you have paid. Paypal automatically sends us a notification once you've paid. But if it dosen't unlock your PC upon payment contact us
(CryTekk@protonmail.com)

Reference Number: CT-[redacted]
When you pay via BTC, send us an email following your REF Number if your PC dosen't unencrypt. Once you pay, Your PC will be decrypted. However if you don't within 14 days we will continue to infect your PC and extract all your data and use it.
Google 'how to buy/pay with bitcoin' if you don't know how. To pay by bitcoin: send $40 to your unique bitcoin address b>[redacted]
PayPal
Buy Now

Along with the usual payment method, CryTekk virus authors offer to pay via the popular payment site PayPal. As soon as victims click on the “Buy Now” button, they are redirected to a quite legit looking site. There, users are asked to enter their credit card details and later personal information, such as name, date of birth, address, phone number, and other data. Once they proceed, a message pops up, claiming that the account restoration was successful.

While it is an obvious scam, it might be entirely believable for those who never encountered a ransomware infection before. Without a doubt, users should remove CryTekk ransomware as soon as possible and ignore criminals. The scheme is merely a trick to disclose valuable personal information and credit card details.

For CryTekk ransomware removal, you should rely on powerful security software. Be aware that not all tools might recognize the threat, so a scan using multiple apps might be needed. After the elimination of the virus, you should scan your machine with Reimage Reimage Cleaner in order to restore its functions to the original state. 

You can then contact the security researcher Michael Gillespie[3] for free decryption, recover data from backups or try third-party software as a last resort.

CryTekk ransomware virus
CryTekk ransomware is a crypto virus that is based on the open-source HiddenTear project

Ransomware can be avoided – follow these tips

Regular users usually underestimate the severity of serious cyber infections like ransomware. They ignore advise from experts and expose themselves to various hazards when browsing the web. To their surprise, they find their files locked without a backup available. It is an unfortunate scenario. However, there are several suggestions from industry experts that can decrease the possibility of the infection to a minimum. Follow these simple tips:

  • Install anti-malware software with real-time protection feature;
  • Keep backups of your files and update them regularly;
  • Avoid high-risk websites, such as torrent, file-sharing, cracks, porn, etc.;
  • Do not casually open spam email attachments or click on links inside;
  • Update your operating system and the software as soon as security updates are released;
  • Use ad-block;
  • Scan unknown files with such tools like Virus Total;
  • Use strong passwords for all your accounts and change them frequently.

Eliminate CryTekk ransomware and only then proceed with file recovery

Before you can recover your files, you need to remove CryTekk ransomware from your machine. As we already mentioned, the malware is not too sophisticated, so the process should not be complicated, as long as you use appropriate security software.

Nevertheless, if there are any troubles with CryTekk ransomware removal, we suggest you enter Safe Mode with Networking and perform a full system scan from there. If you don't have backups, you can contact the security researcher for help or make use of third-party data recovery software. We provide all the instructions below.

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What to do if failed?
If you failed to remove virus damage using Reimage Reimage Cleaner, submit a question to our support team and provide as much details as possible.
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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 Reimage Cleaner, try running Combo Cleaner.

To remove CryTekk virus, follow these steps:

Remove CryTekk using Safe Mode with Networking

To remove CryTekk virus safely, enter Safe Mode with Networking as explained below:

  • 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 CryTekk

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

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

Remove CryTekk using System Restore

Another method that can be used for virus elimination is 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 CryTekk. 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 Reimage Cleaner and make sure that CryTekk removal is performed successfully.

Bonus: Recover your data

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

Make use of Data Recovery Pro

This tool was created to recover files that were corrupted or accidentally deleted, although it also saw success in helping ransomware victims to retrieve their data.

  • 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 CryTekk ransomware;
  • Restore them.

Try using Windows Previous Versions feature to recover files individually

This method can only be useful if System Restore feature was enabled before the infiltration of ransomware.

  • 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”.

ShadowExplorer may be able to recover all your files

In case CryTekk ransomware failed to remove Shadow Volume Copies, this tool will help you to get all your data back.

  • 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.

Contact Michael Gillespie for assistance.

 

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

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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References


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