If your files have been encrypted, we accept the challenge of analyzing your case.

Checkmate Ransomware

A new ransomware extension, called Checkmate, has been identified and has made numerous attacks targeting Network Attached Storage (NAS) devices.

Checkmate ransomware first appeared in May 2022, breaking into servers manufactured by the company QNAP.

In an official QNAP statement released in July this year, the company commented that hackers break into the system “using a dictionary attack to crack accounts with weak passwords.”

Dictionary attack is the name given to the strategy of performing brute force intrusions to gain access to user logins and passwords. Among the millions and even billions of login attempts, dictionary words are used extensively.

QNAP also made some recommendations to prevent new victims, including upgrading to the latest released version of the system and also doing a password analysis of all NAS users.

The access was possible due to a common practice of server users, which was to make SMB services available on the Internet. They allow the sharing of data on the network, which creates easy access for the group to browse the entire server.

After infecting a machine, checkmate ransomware begins stealing and encrypting the files found, and can reach any device connected to the same network. The files are given an extension called “.checkmate” and after it is applied, access to the data is blocked.

To negotiate with the group and try to get your data back, a ransom note called “!CHECKMATE_DECRYPTION_README.txt” is fixed on your desktop, informing you of what happened and a link to contact them. The amounts demanded by the group for recovery come in the region of $15,000 in Bitcoin.

To try to gain trust and prove to victims that they have access to the decryption key, the checkmate attaches a link to the telegram, where up to 3 folders with 15Mb files can be restored.

However, it is worth noting that paying a ransom is not recommended. According to research, companies that resort to this way out have an 80% chance of being attacked again.

The ideal choice, is to seek support with a company specialised in data recovery.

Recover Checkmate Ransomware

Recover Files Encrypted by Checkmate Ransomware

Digital Recovery is a company specialising in the recovery of files encrypted by ransomware.

For more than 23 years facing the various scenarios of data loss, we have gained the necessary experience to work on solutions in any data centers. Including NAS servers, where checkmate ransomware operates.

Due to the massive proportions a ransomware attack can take, we have a specialist division to recover your files.

In most cases, our engineers are also able to work fully remotely to recover your information, all in accordance with the General Data Protection Regulation (GDPR)

Alongside our service, we offer our clients a confidentiality agreement (NDA), which guarantees the secrecy of information.

For more information, request a diagnosis with our experts right now.

Ransomware Recovery FAQ

Every day, ransomware attacks get better and better. After a successful attack attempt, ransomware quickly maps the user’s most important files to begin encryption. Microsoft Office files, databases, PDFs and design are among its main targets.
Ransomware is designed to go unnoticed, so it can disable all system defences without being noticed and start the process of encrypting files. Even if ransomware goes unnoticed by the system, it can be noticed by the user, as it uses system resources to perform the encryption, which can slow down the system. Ransomware also changes file extensions. So look out for these signs: slowing down the system and adding extensions to files. To find out more, talk to our experts.
Yes, this is possible. You can restart the computer in safe mode, which will limit the action of the ransomware since the system resources will be locked. You can also disconnect the computer from the Internet, which can interrupt the hackers’ connection to your system, it should be noted that there are ransomwares that work even without being connected to the Internet. You can also run diagnostics to identify threats with your antivirus software, the vast majority of antivirus software have this function. But there are cases where the encryption was interrupted by the user, some files had already been affected and this caused an error in the encryption and the hackers could not restore the files, even with the decryption key. In these cases, only a data recovery company, such as Digital Recovery, can recover the files. To find out more, talk to our experts.
Yes, the attacks mainly take place on holidays and weekends, in the early hours of the morning. These days are chosen because there are not many active users on the system, making it impossible to discover the attack before the encryption is complete. To find out more, talk to our experts.
The vast majority of ransomware uses RSA [Rivest-Shamir-Adleman] -2048 and AES [Advanced Encryption Standard] encryption. To find out more, talk to our experts.
First of all, do not pay the ransom. No matter what the hackers say, there is no guarantee that the decryption key will actually be released after the ransom is paid. The first thing to do is to inform the authorities about the attack. Governments have specialised cybercrime departments that will investigate the attack. Next, check if your backups have been affected, if so, only a specialist data recovery company can recover your files, this is the next step. Contact Digital Recovery who will assist you in the full recovery of your files. To find out more, talk to our experts.
After contacting us and sending the affected media, we will diagnose the device to verify the extent of the damage caused by the ransomware, which will allow us to predict the duration of the process and provide the client with a budget. Once the budget is approved by the client, we begin the recovery process, for which we have proprietary software that can, with the help of our specialists, reconstruct the data. If the client opts for remote recovery, instead of sending us the media, they will send the encrypted files to a virtual environment, totally secure, so that we can access them. At the end of the process, we will perform a double check so that the customer can verify the integrity of the recovered files. Payment is only made once the files have been delivered and validated by the client. To find out more, talk to our experts.
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Redação Digital Recovery
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