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 NAS (Network Attached Storage) devices.

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

In an official QNAP statement released in July of 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.

Some recommendations were also left by QNAP to prevent new victims, some of them being to upgrade to the latest released version of the system and also to do 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 data sharing over the network, which creates easy access for the group to browse the entire server.

After infecting a machine, checkmate ransomware starts 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 at $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 from a company that specializes in data recovery.

Recovery Checkmate Ransomware

Recover Files Encrypted by Checkmate Ransomware

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

For over 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 gigantic proportions a ransomware attack can take, we have a specialized division to recover your files.

In most cases, our engineers are also able to work fully remotely to recover your information.

In addition to our service, we offer our customers a confidentiality agreement (NDA), which guarantees the secrecy of your 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 be unnoticeable, so it can disable all system defenses without being noticed and start the process of encrypting the files. Even though ransomware can go unnoticed by the system, it can still be noticed by the user, because ransomware uses the system’s own resources to do the encryption, this can slow down the system. Ransomware also changes file extensions. So be on the lookout for these signs: System slowdown and extensions being added to files.

To find out more, talk to our experts.

Yes, it is possible. You can restart the computer in safe mode which will limit the ransomware’s action as system resources will be locked. You can also disconnect the computer from the Internet which can interrupt the hackers’ connection to your system, it is worth remembering that there is ransomware that works even without being connected to the Internet. You can also start the diagnostics to identify threats with your antivirus, the vast majority of antiviruses 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 even 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, attacks usually happen mainly on holidays and weekends during the early morning hours. These days are chosen because there are not many active users on the system, which prevents the attack from being discovered before the encryption is completed.

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 specialized cybercrime departments that will investigate the attack. After that, check if your backups were affected, if they were, only a company specialized in data recovery can recover your files, this is the next step. Contact Digital Recovery who will assist you in the complete recovery of your files.

To find out more, talk to our experts.

After first contacting us and sending the affected media we will diagnose the device to check the extent of the damage caused by the ransomware, with this we can project the duration of the process, and provide the budget to the customer. After the budget is approved by the customer, we start the recovery process, for this we have exclusive software that can, with the help of our specialists, reconstruct the data.
If the customer opts for remote recovery, instead of sending us the media, he/she will send the encrypted files to a virtual environment, which is totally safe, so that we can access them.
After the end of the process we will do a double check so that the customer can verify the integrity of the recovered files.
Payment is only made after delivery of the files and validation of the same by the client.

To find out more, talk to our experts.

Redação Digital Recovery
Redação Digital Recovery
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