Djvu VirusRansomwareRemoval Guide

Fdcz Virus Removal Guide (+Decrypt .fdcz files)

Fdcz – Ransomware

Fdcz is a harmful software application functioning as common ransomware. Michael Gillespie, the popular virus researcher, very first discovered this new name in the DJVU ransomware family.

Fdcz was created for the sole purpose to encrypt all popular file types. Realistically, as quickly as the file encryption is effectively accomplished, the users are not able to get access to them. Fdcz virus includes its own “.fdcz” to all the encrypted files. For example, the file “price_list.xls”, as soon as modified by Fdcz, will be titled as “price_list.xls.fdcz”. When the encryption is achieved, Fdcz puts its own unique text file (_readme.txt) into all the folders that keep the encrypted files.

The alert specified by text file requesting for the random os extremely comparable to the notices given by other ransomware hazards belonging to the DJVU family. The warning essentially indicates that the data has been encrypted and the only service to get access to it is to use a distinct standalone key. Regretfully, this declaration is definitely true.

The method to secure the files utilized by Fdcz is not completely investigated. Nevertheless, there is no doubt that each computer system owner may be provided a special decryption key, which is absolutely unique. It is very difficult to recover the data without the proper key in location.

“Don’t worry, you can return all your files!”, from _readme.txt message:

Don't worry, you can return all your files! virus

One more peculiarity of the Fdcz virus is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the complete control by the crooks who have actually introduced the Fdcz ransomware into the web. In order to acquire the key and restore the essential data, the users are informed to get in touch with the frauds through e-mail or by telegram and to pay the ransom in the amount of $980.

The message likewise says that the people should get in touch with the Fdcz authors within 72 hours upon the minute of the data file encryption. The alert indicates that by doing so individuals will acquire a 50% discount, therefore, the ransom quantity drops down to $490.

No matter what the quantity of the ransom is, we highly encourage that you do not pay the ransom. There is no assurance that these online criminals will keep their promises, so they may not care at all what the victims feel about the encryption, even when the amount of the ransom is received into their accounts. Hence, paying ransom typically does not lead to an effective recovery. So, the users might just lose their money for absolutely nothing.

Likewise, we urge you not to call the scams as they advise. Do not move loan into their wallets. There are no applications that could break the Fdcz virus or restore the data at no charge. Therefore, the only correct decision is to bring back the data from possible backups (if available).

Virus Summary

NameFdcz Ransomware
File Extensionfdcz
Short DescriptionThe 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.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .fdcz extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Fdcz Removal Tool   GridinSoft Anti-Malware
Fdcz Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now filled with infections comparable to the Fdcz virus. For instance, this specific hazard is generally similar to Brusaf and other ransomware-type infections. These damaging utilities have been established in order to secure the crucial data and express the demand for the users to pay the ransom. All these infections utilize the similar algorithm to create the specific key for effective files decryption.

Unless the Fdcz ransomware is still under the development process or has got some concealed bugs, it is not possible to bring back the information manually. Thus, the only working service to avoid the loss of your essential data is to routinely preserve updated backups of all your important data.

Another crucial piece of advice is to save the backups on unique storage not linked to your primary PC. For example, you might save it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is really dangerous, considering that the backup may likewise be encrypted by the Fdcz .

Leaks for the Fdcz ransomware attack.

Fdcz uses lots of paths to infiltrate the vulnerable computer systems. It is not specific what particular method was used in your case, nevertheless, the invasion might happen by means of the following channels:

  • bundling with third-party programs, generally free software;
  • spam e-mails from the unidentified senders;
  • sites providing complimentary hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Fdcz might camouflage itself as some genuine application, for example, through the misleading notifies demanding setup of some software application upgrade. This is the most common technique utilized by the scams to inject the Fdcz virus files into the system. In this manner users partly take part in its installation, without clearly comprehending the risk.

In addition, the frauds may send unsolicited spam email with difficult signals motivating the people to open suspicious accessories or click some download links, for example, those encouraging individuals to open particular images, text files, tax documents and other information.

No doubt, opening these files or clicking the malicious links might essentially harm the system. Fake Acrobat Reader update alerts may lead to the Fdcz ransomware seepage. Likewise, downloading the broken software application might furthermore consist of the ransomware installer. The last but not the least, installation of Fdcz may happen through some Trojan horses that may be set up stealthily into the system and without the user’s direct approval or perhaps permission.

Avoiding the Fdcz ransomware injection.

Obviously, there is no absolute guarantee that your computer system will be always free of any malware attacks, nevertheless, we want to share some helpful suggestions with you to make it more secure. Make certain to pay really very close attention while browsing the web and specifically while getting cost-free programs. Do not open any suspicious email accessories, especially if the sender is not known to you.

Do not forget that specific freeware installer may also consist of some other additional apps in the bundle. These additional applications might be really harmful. It is of utmost value to keep your anti-virus software and your os in basic to be always appropriately upgraded.

It is rather logical that downloading pirated programs is illegal, however, furthermore, such unauthorized apps usage may likewise bring major damage to your computer. For this reason, do not download any split programs. Plus, the truth that your existing anti-virus did not protect the system from the Fdcz ransomware is a good reason for you to reassess your choices and change to another program that can render the securing functions on a better level.

Below please find the quotation from the Fdcz text file:

 Don't worry, 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:
 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" or "Junk" folder if you don't get answer more than 6 hours.
 To get this software you need write on our e-mail:
 Reserve e-mail address to contact us: 

 Our Telegram account:

Screenshot of files with “.fdcz” extension added by the ransomware:”

Fdcz Ransomware - encrypt files with .fdcz extension

Use GridinSoft Anti-Malware to remove Fdcz ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

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.
GridinSoft Anti-Malware
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.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

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.
GridinSoft Anti-Malware Scan

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.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore fdcz files

You can download Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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