CHECH – Ransomware
The CHECH mean a ransomware-type infection. The infection comes from the Djvu ransomware family. CHECH was elaborated specifically to encrypt all major file types. When the file is encrypted people are unable to use them. CHECH adds the “.chech” extension for each file encrypted by it. For example, the file “myphoto.jpg“, as soon as encrypted by CHECH, will be renamed into “myphoto.jpg.chech“. As quickly as the encryption is finished, CHECH places a special text file into every folder containing the encrypted data.The message given by CHECH text file requesting for the ransom is definitely the same as the statements given by other ransomware virus representatives belonging to the Djvu clan. It literally mentions that the information is encrypted which the only way to bring back it is to use a a distinct decryption key. Regretfully, this is definitely true. The kind of cryptography mechanism used by CHECH is still not appropriately examined. Still, it is absolutely certain that each victim may be given the specific decryption key, which is totally distinct. It is impossible to bring back the files without the key available.
Another technique of CHECH is that the victims cannot access to the key. The key is kept on a specific server run by the frauds associated with CHECH ransomware. To get the key and recover the important info people have to pay the ransom, which amounts to $980. To obtain the payment details users are instructed to contact the frauds through email or telegram. The alert also indicates that the users require to contact the CHECH developers within 72 hours after the encryption happened. The message says that doing so users will get a 50% discount, so the ransom amount will drop down to $490.
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However, irrespective of the requested quantity, people should keep away from paying the ransom virus. Cyber frauds are not fair, so they tend to entirely disregard what their victims feel about the issue, even when the payment reaches their pockets. This is why paying the ransom generally does not give any positive outcome and people just lose their money for absolutely nothing.
We highly recommend that you do not contact these crooks and definitely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack CHECH ransomware and to recover the information data totally free. Thus, the just right decision is to recover the lost information from the available backup.
Virus Summary
| Name | CHECH Ransomware |
| File Extension | .chech |
| Type | Ransomware |
| Family | Djvu |
| Short Description | The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files. |
| Symptoms | File encryption by the ransomware is performed by means of the AES and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special chech extension to all the files modified by it. |
| Distribution Method | Spam Emails, Email Attachments |
| Similar Infections | Lotep, Dalle, Blower |
| Removal Tool | GridinSoft Anti-Malware |
Remember that the internet is now overwhelmed with threats that look comparable to CHECH ransomware. It is similar Lotep and many other ransomware-type threats. Harmful programs of such kind are typically elaborated to encrypt important data and to state the need prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a comparable algorithm to produce the distinct decryption key for data decryption.
Therefore, as long as the ransomware is still being developed or has some hidden bugs, manually recovering the information is merely not feasible. The only way to prevent the loss of your essential files is to frequently create backups of your important information.
Keep in mind that even if you create such backups, they need to be put into a special storage utility not connect to your main computer. You may use the USB Memory Stick or external hard drive for this purpose, or refer to the help of the cloud storage. If you keep your backup files on your common system they may be encrypted along with other files, so it’s definitely not a good storage place.
How did ransomware infect my PC?
There are numerous ways used by online frauds to distribute CHECH ransom virus. Despite the fact that it doubts how precisely CHECH injects your PC, there are some leaks through which it may infiltrate the system:
- integration with third-party software application, especially freeware;
- spam e-mails from unidentified senders;
- sites rendering free hosting services;
- pirated peer-to-peer (P2P) downloads.
Often CHECH ransomware might exist as some genuine software, for instance, in the pop-ups advising users to execute some essential software application updates. This is the common trick used by online frauds to persuade people into downloading and installing CHECH infection manually, by means of their direct participation in the installation process.
In addition, the criminals may describe different e-mail spam methods to inject malicious codes into PC. So, they may describe to sending unsolicited spam e-mails with tricky notifications promoting users to download the attachments or click on certain download links, for example, the ones encouraging users to open some video, documents, tax reports or invoices.
Needless to mention, opening such files or clicking on such dangerous links may severely damage the PC. Fictitious Adobe Flash Player update informs may result in CHECH virus injection. When it comes to the cracked applications, these illegally downloaded programs may likewise contain destructive codes causing CHECH secret installation. Lastly, injection of CHECH may happen by ways of Trojans that privately get injected into the system and install malicious tools without the user’s consent.
Is there any method to prevent the injection of CHECH ransom virus?
Even though there is no 100% guarantee to prevent your PC from getting infected, there are some pieces of guidance we want to show with you. First off, be extremely mindful when you browse the web and specifically while downloading free apps. Stay away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.
Keep in mind that some freeware installers may contain other unwanted utilities in the bundle, so they may be destructive. Make sure that your current anti-virus and your entire operating system is always duly updated.
Obviously, downloading pirated software is unlawful and may lead to necessary damage to be made for your system. Hence, stay away from downloading cracked software. You are also strongly encouraged to reconsider your existing security software and potentially change to another security solution that can render better services of protecting your system.
Below please find the quotation from the CHECH text file:
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: -
Screenshot of files with “.chech” extension added by the ransomware:
Use GridinSoft Anti-Malware to remove CHECH ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
2. Double-click on the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
4. Wait for the GridinSoft Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
5. Click on “Clean Now”.
When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
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