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Remove Chech Ransomware (Removal Instructions) - Decryption Steps Included

removal by Olivia Morelli - - | Type: Ransomware

Chech ransomware is a STOP virus variant that locks data then tries to blackmail users into paying ransom in digital currency

Chech ransomware

Chech file virus is malware that belongs ransomware-type category and was first spotted by security researchers[1] in late March 2019. It belongs to STOP virus family and uses a sophisticated AES encryption cipher to modify files that are most commonly used, such as .jpg, .doc, .pdf, .mkv, .xtml, .txt, and many others. The altered structure can also be noticed by an extension .chech – it will also prevent users from opening any of the personal data. Once done with the encoding process, Chech ransomware will contact a remote C&C server and drop a ransom note _readme.txt (other subgroups also use this file, including Promos, Kroput, Blower, etc.), which asks users to contact crooks via blower@india.com or blower@firemail.cc and then pay $980 in Bitcoin for the file decryptor. While this variant is not decryptable, experts do not recommend paying bad actors and instead focus on Chech ransomware removal and alternative file recovery methods.

SUMMARY
Name Chech
Type Ransomware
Family STOP ransomware
Encryption algorithm AES-256
File extension .chech
Ransom note _readme.txt
Contact blower@india.com or blower@firemail.cc
Decryptable? No. Use alternative file recovery methods
Removal Use ant-malware software that can detect the threat
Recovery To recover from virus damage, scan your device with Reimage Reimage Cleaner

While there are multiple different infiltration methods that hackers use to propagate Chech file virus, it is most likely that users get infected with the threat after downloading and installing pirated software or its cracks. Additionally, opening and extracting attached files or clicking on links inside a phishing email is not a good idea either. Check our second section of the article if you want to know ways to protect yourself from Chech ransomware and similar threats.

As soon as Chech virus enters the computer, it performs a variety of changes to Windows system configuration, such as deletion of Shadow Volume Copies,[2] establishing new scheduled tasks, modifying the registry, etc. The encryption process changes files as follows: a picture.jpg is turned into picture.jpg.chech.

As soon as Chech ransomware finishes the encryption, it drops a ransom note that states the following:

ATTENTION!

Don't worry my friend, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
https://we.tl/t-W8DuFk4wwu
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail “Spam” folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:
blower@india.com

Reserve e-mail address to contact us:
blower@firemail.cc

Your personal ID:

As evident, hackers offer a discount of 50% if contacted within the first 72 hours after the initial Chech ransomware infection. However, experts do not recommend doing so, as:

  • You will be sponsoring cybercrooks' illegitimate activities and prove that the illegal business model works;
  • You might end up getting scammed, losing both of your files and money.

Chech file virus
Chech ransomware is crypto-malware that infects users via cracked or repacked software installers

Therefore, we highly recommend users to remove Chech virus instead and never contact the crooks. This can be accomplished with reputable security software, although you might have to enter Safe Mode with networking for that. After you complete the Chech ransomware termination procedure, make sure you scan your PC with Reimage Reimage Cleaner – it will get rid of the virus damage and restore Windows registry, although it will not decrypt files. For that, you need to use specific software – you can find download links and usage instructions in our removal section below.

Be aware that some STOP ransomware variants (.promorad) was simultaneously distributed with AZORult malware[3] – a Trojan that is capable of stealing user passwords, cookies, online banking information, and other sensitive details. Thus, if you got infected with Chech ransomware or any other variant, make sure you change your passwords and check your bank account to make sure no illegal transactions were performed.

Stay aware from pirated software and use automated tools that can stop ransomware viruses

As we already mentioned, malware authors often employ a variety of different methods for distribution. In STOP ransomware case, users are more likely to be infected while downloading pirated software or cracks/keygens from sites like Crackithub.com. In general, installing cracked software is illegal and might land you in jail in some cases. While you might get away with facing the consequences for copyright infringement, malware infections while visiting torrent and cracked software sites is highly likely.

Therefore, it is highly advisable staying away from high-risk sites. If you download anything, make sure you scan executables with tools like Virus Total or your anti-virus engine. Speaking of the latter, it is extremely important to keep anti-virus software installed on your device at all times. Additionally, you can also employ such tools like anti-exploit, real-time internet protection, ad-blocker, Firewall to maximize your protection.

You should not pay ransom and instead delete Chech file virus from your computer

It is best not to consider paying the ransom and instead focus on the Chech ransomware removal process. The initial infection might be incredibly overwhelming to users who never faced crypto viruses before, as, unlike most silent threats, ransomware makes sure that the victim knows about what happened (hence the ransom note, popping windows, wallpaper change, etc.). However, it is vital to stay calm.

Currently, there is no official decryptor available for Chech virus. Nevertheless, as practice had shown, security researchers are continually working on decryption tools for other STOP variants, and many of them are already decryptable. As for now, remove Chech ransomware from your machine with anti-malware software and attempt to recover data by using alternative methods – you can find 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.
Reimage Reimage Cleaner has a free limited scanner. Reimage Reimage Cleaner 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 Reimage Cleaner, try running Combo Cleaner.

To remove Chech Ransomware, follow these steps:

Remove Chech Ransomware using Safe Mode with Networking

In case .Chech file virus does not let your security software do its job, 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 Chech Ransomware

    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 Chech Ransomware removal.

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

Remove Chech Ransomware using System Restore

System Restore can also be used to terminate the ransomware infection:

  • 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 Chech 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 Reimage Cleaner and make sure that Chech Ransomware removal is performed successfully.

Bonus: Recover your data

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

Make use of Data Recovery Pro

Data Recovery Pro is a professional tool used to restore files that were corrupted or accidentally deleted. In some cases, this software can help when dealing with ransomware locked 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 Chech Ransomware ransomware;
  • Restore them.

Windows Previous Versions Feature might save you from losing personal data

If you had System Restore enabled prior to Chech ransomware attack, you might be able to recover separate files with Windows Previous Versions Feature.

  • 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 might be the answer

If Shadow Volume Copy deletion procedure failed, you have a chance at recovering your data with ShadowExplorer.

  • 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 official decryptor is created yet

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

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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