Fdcz Virus


Fdcz is a ransomware virus used by cyber criminals to extort web users’ money by encrypting their files. Fdcz is a stealthy threat that can creep inside a device and limit access to sensitive and very valuable digital information with the idea to ask a ransom payment for it.


Once your files have been encrypted the Fdcz virus will leave this message in a .xtx file.

Most victims of Fdcz fear that they will lose access to their files if they don’t comply with the ransom demands of the hackers behind this infection. The users who usually do not keep backups of their most important documents on an external drive are the ones that are the most frustrated. However, safety experts do not advise the people affected by the Fdcz’ encryption to risk their money and finance the money-extortion practice but seek legitimate methods to remove the ransomware and minimize the negative effects of its attack by alternative means.

The Fdcz virus

The Fdcz virus is a sophisticated infection of the ransomware category that threatens web users to never be able to access their digital files again if they don’t transfer money into a given cryptowallet as ransom. What the Fdcz virus basically does is it asks a ransom payment in exchange for providing the victims with a decryption key for their previously encrypted files.

This virus is one of the most malicious programs in the cryptovirus subcategory that web users may encounter. Email attachments, spam messages, and malicious web ads are some of the most common ways to come across a threat like Fdcz, Enfp and Ytbn. Infections of this type can also be spread through some low-quality websites, free downloads and cracked software installers. However, it is important to mention that Ransomware typically does not come by itself and generally exploits system weaknesses created by a Trojan horse or other malware that has already infected your machine. This is why you need to search the whole system for malicious code and clear your computer of other harmful infections if you want to remove Fdcz efficiently.

The Fdcz file encryption

The Fdcz file encryption is a method by which user files are converted into bits of data that cannot be read or opened by any program. Once the Fdcz file encryption is applied, the owners of the encrypted files are effectively unable to access them without a decryption key.

Fdcz file

The Fdcz file encryption is very complex and not yet decryptable.

If, however, you have an external drive where you keep copies of your data or a cloud backup you do not have to pay ransom to anyone. You only have to remove Fdcz from your computer. This can be done manually by using the instructions in the removal guide below or automatically by running a full system scan with professional malware removal software. However, if you do not have backups, you may be in great trouble. The Fdcz encryption is practically unbreakable without a special decryption key. Therefore, if you really need your information, you may be willing to pay the required ransom. This is a bad idea, though, because nobody can tell if the hackers will really provide the decryption key. Besides, if you obtain the key but the encryption cannot be reversed successfully with that key, you will be left with no data and no money. In addition, your computer will be totally unusable until the Ransomware is removed from it as any new and old files you create or retrieve are most likely to get encrypted again. This is why we suggest that you focus on the steps in the following guide and see our file recovery section which provides some free data-restoration suggestions.


Name Fdcz
Type Ransomware
Detection Tool

Fdcz Ransomware Removal


We recommend that you Bookmark this page as you may be required to exit your browser during the removal of Fdcz.

For the smooth completion of the steps below, we also recommend that you boot your computer in Safe Mode This will run only the most necessary processes and services on the system and will make it easier for you to detect the ransomware.



Now, with the computer booted in Safe Mode, use the CTRL + SHIFT + ESC key combination to open Windows Task Manager.

Once in it, click on the Processes Tab and try to detect which of the listed processes are operated by Fdcz and appear to be dangerous.  Look for unusual behavior such as high CPU or RAM consumption, strange user name, etc.


The moment you find a process that looks questionable, right-click on it. This will open a pop-up menu on the screen where you have to select Open File Location. Once you get to the file location of the process in question, drag and drop the files found there in  our free online virus scanner for a malware scan:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Drag and Drop File Here To Scan
Drag and Drop File Here To Scan
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    When the scan completes, follow the suggested action. If the files that you have scanned turn out to be malicious, end the process that is related to them from the Processes tab and then delete the files from their file location along with their folders.


    A very important step of the removal of Fdcz is to check the Hosts file of your computer for signs of hacking. Sometimes, ransomware threats don’t come alone and often work in a combo with other malware, such as Trojans. So here is what you need to do:

    Use the Start and R key combination to open a Run dialog box on your screen. Then paste this in the run box:

    notepad %windir%/system32/Drivers/etc/hosts

    Click the OK button to execute the command. This should immediately open a file named Hosts on the screen. This is a simple text file. You need to scroll down and find where it writes Localhost. A sign of hacking could be the presence of dozens of strange IPs below Localhost just as it is shown on the example image below:

    hosts_opt (1)

    If the Hosts file on your computer contains many questionable IPs under Localhost, please leave us a comment below this post so we can assist you.

    After that, open the System Configuration app by typing msconfig in the windows search field and hitting the enter key from the keyboard. 


    Then, click on the Startup tab and carefully check the list of entries with checkmarks. Ransomware threats like Fdcz may add some malicious entries in the Startup. Look for questionable entries with unknown or fake-looking Manufacturer and remove the checkmark before these entries. Before you close down the System Configuration, make sure that all processes that are left there are legitimate.


    Next, open the Registry Editor by heading to the Windows search field and typing Regedit. Hit the Enter key and this will launch the Registry Editor app. Once in it,  press CTRL and F keys together. A Find dialog box will open where you have to type the Name of the ransomware. Next, press the Find Next button and delete any entries that get detected by the Find function.

    Be careful! Any wrong deletions in the registry editor may lead to very serious system damage. Make sure that you delete only entries related to the ransomware and nothing else!

    After that, go manually to each of the listed directories below by typing each of them in the Windows Search Field:

    1. %AppData%
    2. %LocalAppData%
    3. %ProgramData%
    4. %WinDir%
    5. %Temp%

    Check out for anything that has recently been added to these folders by the ransomware. Once you get inside the Temp folder, delete everything there. 

    If you have questions or concerns about any of the steps, feel free to leave us a comment and we will do our best to help you out.


    How to Decrypt Fdcz files

    Ransomware threats like Fdcz are notorious for their ability to encrypt user files and keep them inaccessible unless the victims pay a ransom. Sending money to anonymous online crooks, however, doesn’t guarantee anything. That’s why we recommend to the victims of Fdcz to try out alternative methods like the detailed file-recovery guide that can be found here


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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