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  • Active
  • Severity: High
  • Ransomware
  • Windows
  • Verified · Nov 2022

How to remove Tcbu ransomware

A step-by-step removal guide for affected devices. Follow the verified procedure below — most readers complete it in under 10 minutes.

Alice Woods · Likes to teach users about virus prevention

Tcbu ransomware is a threat that can be spread alongside other threats

Tcbu ransomware

Tcbu ransomware infections are not easily noticed because these particular threats can be distributed using other malware pieces like trojans and info-stealers. the infection process is silent and quick, so a particular virus payload is injected into the machine when the file attachment with the malicious file is opened, pirating package gets downloaded, or the particular tool launches the drop of the malware.

Tcbu file virus can be intrusive and damaging, but it manages to mask these issues with other pop-ups, so people only see the data locked and marked using .tcbu appendix. The infection encodes commonly used files and uses powerful encryption methods for this.

Then the ransom note can be dropped where virus creators can ask for the payments in exchange for the alleged decryption[1] tool delivery. However, that is rarely happening because threat actors are commonly disappearing instead of providing the victim with a working tool for the Tcbu ransomware virus files.

Name Tcbu ransomware
Type Cryptovirus, file-locker
File marker .tcbu
Ransom amount $490/$980
Ransom note _readme.txt
Contact mails support@fishmail.top, datarestorehelp@airmail.cc
Distribution Files get distributed via emails, other threats and pirating services online
Removal Rely on threat removal tools and security programs like SpyHunterCombo Cleaner or MalwarebytesMalwarebytes to terminate this virus
Repair The infection can damage parts of the machine, so run FortectIntego to fix related issues with corrupted system

The dangerous family of threats

Tcbu ransomware comes after the 600 other versions of Djvu virus that were released throughout these years since the first 2018 release. It is known that the infection is using other malware to spread the ransomware payload around. Pirating packages and malicious file attachments can be used in these campaigns.

The threat is injected into the machine silently, and encryption processes can happen. Tcbu file virus can employ malware like information stealers Vidar and RedLine to trigger the launch of the payload. The infection can be triggered when people download these files from torrent services unknowingly and when they open a malicious file attachment from emails too.

You need to check those pieces before you go for the download, so you can avoid an infection like Tcbu ransomware virus. Unfortunately, distribution is not the only thing evolved and advanced with these recent versions. Encryption is also more powerful with these releases that are weekly at this time, as experts[2] note.

The threat uses online IDs right now, and those are unique for each device that the virus affects. Previously used offline keys were uniform for all the devices that get encrypted by one version, so tools were developed based on that method. Right now, it is less common that Tcbu ransomware will use offline keys, but you can still try to decrypt these files.

Tcbu ransom note

The decryption of the malware

If your computer got infected with one of the Djvu variants, you should try using Emsisoft decryptor for Djvu/STOP. It is important to mention that this tool will not work for everyone – it only works if data was locked with an offline ID due to malware failing to communicate with its remote servers.

Even if your case meets this condition, somebody from the victims has to pay criminals, retrieve an offline key, and then share it with security researchers at Emsisoft. As a result, you might not be able to restore the encrypted files immediately. Thus, if the decryptor says your data was locked with an offline ID but cannot be recovered currently, you should try later. You also need to upload a set of files – one encrypted and a healthy one to the company's servers before you proceed.

  • Download the app from the official Emsisoft website.
  • After pressing Download button, a small pop-up at the bottom, titled decrypt_STOPDjvu.exe should show up – click it.
  • If User Account Control (UAC) message shows up, press Yes.
  • Agree to License Terms by pressing Yes.

  • After Disclaimer shows up, press OK.
  • The tool should automatically populate the affected folders, although you can also do it by pressing Add folder at the bottom.
  • Press Decrypt.

From here, there are three available outcomes:

  1. Decrypted!” will be shown under files that were decrypted successfully – they are now usable again.
  2. Error: Unable to decrypt file with ID:” means that the keys for this version of the virus have not yet been retrieved, so you should try later.
  3. This ID appears to be an online ID, decryption is impossible” – you are unable to decrypt files with this tool.

Removing the infection

Tcbu ransomware is powerful and can be persistent in addition to its dangerous capabilities and damaging functions. You must remove the virus if you want to use the machine ever again. Triggering the system scan when the AV detection tools like SpyHunterCombo Cleaner or MalwarebytesMalwarebytes get used can be problem-solving.

These threat detection tools can find malicious files[3] on machines and all hidden pieces on the computer that are linked to this or other viruses. Tcbu file virus can be removed when it is listed as a potentially dangerous piece of malware after the system check.

The removal is not the same as decrypting the virus or recovering the data after the infection. Termination is important because the active virus that is still running on the machine can locate any new files and encrypt them. Tcbu ransomware virus is also capable of encrypting files again.

Permanent damage can be caused by these encryption procedures that get repeated. The sooner you remove the threat, the better because this virus is no longer running and messing with anything you possibly remove. Also, encryption is the first step of the Tcbu ransomware, so the sooner you remove and stop it, the bigger opportunity to avoid further issues and system damage there is.

System file recovery

Once a computer is infected with malware, its system is changed to operate differently. For example, an infection can alter the Windows registry database, damage vital bootup and other sections, delete or corrupt DLL files, etc. Once a system file is damaged by malware, antivirus software is not capable of doing anything about it, leaving it just the way it is. Consequently, users might experience performance, stability, and usability issues, to the point where a full Windows reinstall is required.

Therefore, we highly recommend using a one-of-a-kind, patented technology of FortectIntego repair. Not only can it fix virus damage after the infection, but it is also capable of removing malware that has already broken into the system thanks to several engines used by the program. Besides, the application is also capable of fixing various Windows-related issues that are not caused by malware infections, for example, Blue Screen errors, freezes, registry errors, damaged DLLs, etc.

  • Download the application by clicking on the link above
  • Click on the ReimageRepair.exe
    Reimage download
  • If User Account Control (UAC) shows up, select Yes
  • Press Install and wait till the program finishes the installation processReimage installation
  • The analysis of your machine will begin immediatelyReimage scan
  • Once complete, check the results – they will be listed in the Summary
  • You can now click on each of the issues and fix them manually
  • If you see many problems that you find difficult to fix, we recommend you purchase the license and fix them automatically.Reimage results

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