WZTT Virus (.WZTT File) 🔐 Decrypt & Removal Guide

The Wztt virus, known as a ransomware infection, is part of the STOP/DJVU family. This malware is famous for file encryption and extortion. When the Wztt virus infects a computer, it scans the system for files such as photos, videos, documents, and more. It alters the file structure and appends the “.wztt” extension to each file, making them unusable without the decryptor.

Wztt Virus Overview

The Wztt virus is a malicious program that ciphers your files and coerces you into paying for their recovery. This ransomware ciphers different file types. Encrypted files are identifiable by a distinct “.wztt” extension. The affected files become inaccessible and unusable.

Subsequently, the ransomware asks for a file decryption payment in Bitcoin from the victims, which ranges from $490 to $980, depending on the time passed after the attack. In all cases, a text file with ransom payment guidances is named “_readme.txt“.

Wztt Ransomware works with Salsa20 encryption algorithms to scramble the contents of the targeted files. Since the Wztt virus employs such a robust encryption method, it becomes pretty hard, if not impossible, to find the decryption key without the assistance of the attackers.

Once the files are encrypted, the Wztt virus displays a ransom note to the victim, demanding a ransom payment for the decryption key. The ransom note contains instructions on how to pay off the bill and often contains threats of system wipeout or ransom amounts surge if the demands are not met within a specified timeframe.

I have compiled an all-encompassing list of potential solutions, advice, and approaches to disable the Wztt malware and recover access to your files. In some cases, it may be feasible to restore your files, but sometimes, it may be impossible.

Wztt uses a unique key for each victim, with one exception:

The Wztt virus bears resemblance to other DJVU ransomware samples such as Jaqw, Jasa, Jaoy, and Taqw. This virus encrypts a wide range of common file types and appends its distinct “.wztt” extension to all files. For instance, a file named “1.jpg” would be altered to “1.jpg.wztt” and “2.png” to “2.png.wztt“.

After successful encryption, malware spawns a special text file named “_readme.txt” and places it in every folder containing the encrypted files. It as well adds the readme file to the desktop, so the victim will not miss the attack even without opening folders.

The image below provides a visual representation of files with the “wztt” extension:

Encrypted Files by STOP/DJVU Ransomware

This message asking payment is for restore files via decryption key:

_readme.txt (STOP/DJVU Ransomware) – The alarming warning requesting users to pay off the ransom to decrypt the encrypted data contains these annoying warnings.

The Wztt ransomware arrives as a set of operations necessary to execute specific functions on a victim’s computer. Among the foremost of these functions is the initiation of winupdate.exe, a deceptive process designed to display a fraudulent Windows update pop-up during the attack. This manipulation serves to deceive the victim into attributing their PC’s reduced performance to a Windows update.

Simultaneously, the ransomware triggers another process (denoted by a sequence of four random characters) that commences the scanning of the victim’s PC to identify target files for encryption. Following this, the ransomware eliminates Volume Shadow Copies from the system utilizing the following CMD command:

vssadmin.exe Delete Shadows /All /Quiet

Upon removal, the restoration of the previous computer state becomes an immensely challenging endeavor, as utilizing System Restore Points for recovery is rendered unfeasible. Regrettably, ransomware operators systematically eliminate any inherent Windows techniques that might facilitate cost-free file recovery for victims. Furthermore, the hackers manipulate the Windows HOSTS file by appending a list of domains to it and rerouting them to the localhost IP address. Consequently, any attempt to access the blocked websites results in a DNS_PROBE_FINISHED_NXDOMAIN error.

Our observations reveal that the ransomware undertakes efforts to restrict access to websites that offer various how-to guides for computer users. Evidently, by curtailing specific domains, the malefactors intend to prevent victims from accessing pertinent and valuable information concerning ransomware attacks. The malware also deposits two .txt files on the victim’s computer, providing details pertinent to the attack – the victim’s public encryption key and personal ID. These files are named bowsakkdestx.txt and PersonalID.txt.

Despite these modifications, the malware’s actions do not cease. Variants of the STOP/DJVU ransomware are inclined to introduce the Vidar password-stealing Trojan onto compromised systems. This threat boasts an extensive range of capabilities, including:

• Penetrating the victim’s computer with malware and executing it to attain unauthorized access.
• Gaining unauthorized access to login credentials for platforms like Steam, Telegram, and Skype.
• Covertly manipulating and viewing files on the victim’s computer.
• Extracting cryptocurrency wallets from the victim’s system.
• Conceding remote control of the victim’s computer to hackers for various malicious activities.
• Extracting sensitive information such as browser cookies, stored passwords, and browsing history.

The encryption algorithm employed by the DJVU/STOP virus is AES-256. Thus, if your data has been encrypted with an online decryption key, the chances of recovering your files without fulfilling the ransom demand are significantly slim. The crux of the matter lies in the uniqueness of this decryption key for each victim, requiring an extraordinary amount of time to identify a suitable key.

Procuring the online decryption key through alternate means is also practically unattainable. This key is stored on a server controlled by the hackers responsible for disseminating the Wztt malware. To obtain the decryption code, a payment of $980 is requisite. Victims are directed to establish contact with the hackers via email ([email protected]) to acquire the necessary payment details.

The message by the ransomware states the following information:

ATTENTION!

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:

https://we.tl/t-WJa63R98Ku

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:

[email protected]

Reserve e-mail address to contact us:

[email protected]

Your personal ID:
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Do not pay the ransom!

Please, try to use the available backups, or Decrypter tool

_readme.txt file also states that the computer user must get in touch with the hackers’ representatives within 72 hours since the file encryption. On the condition of getting in touch within 72 hours, hackers grant a 50% off. Thus the ransom amount will be minimized down to $490.

Yet, stay away from paying the ransom! I highly recommend that you to avoid contacting these fraudsters and do not pay. One of the most real working solution to retrieve the lost data is just using the backups you have, or using Decrypter tool from Emsisoft.

The uniqueness of all such viruses is the utilization a similar set of actions for decryption key generation. Thus, unless the ransomware is still in development or exhibits some hard-to-track encryption, manually recovering the ciphered data is a thing you can’t perform. The sole remedy to prevent the data loss is to regularly make backups of your critical files.

Keep in mind that even if you do create such backups regularly, they ought to be stored into a specific location without loitering, not being connected to your main workstation. For instance, the backup may be kept on the USB flash drive or some substitute external hard drive storage. Alternatively, you may rely to the help of online (cloud) information storage.

Unnecessary to mention, when you store your backup on your common device, it may be similarly ciphered as well as other data. For this reason, storing the backup on your main computer is surely not a wise idea.

How I was infected?

Ransomware has a various methods to built into your system. But it doesn’t really matter what way had place in your case.

Ransomware attack following a successful phishing attempt.

However, these common leaks may allow the injection of the virus into your PC:

• Using online free hosting resources to distribute the virus undetected.
• Disguising the virus installer with various apps, especially freeware or shareware.
• Spreading the virus through spam emails containing deceptive links that lead to its installation.
• Obtaining pirated software from illegal peer-to-peer (P2P) resources, exposing users to potential malware threats.

In some cases, the Wztt virus has been disguised as something legitimate. For instance, messages demanding the execution of a browser update or a necessary codec for online media playback. This is a common tactic used by online deceivers to manipulate you into manually installing the ransomware, making you an unwitting participant in the process.

The bogus update alert intentionally conceals its true nature, avoiding any indication of virus injection. This malicious process is often masked as an alert prompting you to install an urgent security update or a seemingly harmless program.

Cracked apps also pose a threat. Engaging in illegal P2P activity can lead to the injection of severe malware, including the Wztt ransomware.

To prevent ransomware from infiltrating your system, while no method offers a 100% guarantee against infection, I can provide you with some tips to minimize the risk of Wztt penetration:

Exercise vigilance when using free software.

Always review the installation window contents beyond the primary free program.

Avoid opening dubious email attachments.

Refrain from executing files from unknown senders.

Maintain up-to-date security software.

The malware operates discreetly, deliberately evading detection in your list of available programs. Instead, it operates surreptitiously as a malicious process running in the background, initiating upon computer startup.

How To Remove Ransomware?

Video Guide

How To Decrypt .wztt Files?

The newest extensions released around the end of August 2019 after the criminals made changes. This includes Jaqw, Jasa, Jaoy etc.

As a outcome of the changes made by the criminals, STOPDecrypter is no longer assisted. It has been replaced with the Emsisoft Decryptor for STOP Djvu Ransomware developed by Emsisoft.

You can download free decryption tool here: Decryptor for STOP Djvu.

1. Select folders for decryption.

   Based on the default configurations, the decryptor will by default choose the reachable directories in order to decode the currently available drives (the connected ones), including the network drives. You can select additional locations with the “Add” button.

   Decryptors typically offer several options depending on the specific malware family. The existing possible options are shown in the Options tab and can be activated or disabled there. You may locate a comprehensive list of the currently active Options below.

2. Click on the “Decrypt” button.

   As soon as you add all the desired locations for decryption into the list, click on the “Decrypt” button in order to initiate the decryption procedure.

   Note that the main screen may turn you to a status view, letting you know of the active process and the decryption statistics of your data:

   

   The decryptor will notify you as soon as the decryption procedure is completed. If you need the report for your personal papers, you can save it by choosing the “Save log” button. Note that it is also possible to copy it directly to your clipboard and to paste it into emails or messages here if you need to do so.

The Emsisoft Decryptor might display different messages after a failed attempt to restore your files:

✓ Error: Unable to decrypt file with ID: [your ID]

✓ No key for New Variant online ID: [your ID]

Notice: this ID appears to be an online ID, decryption is impossible

✓ Result: No key for new variant offline ID: [example ID]

This ID appears be an offline ID. Decryption may be possible in the future.

✓ Remote name could not be resolved

How to Restore .wztt Files?

In some case ransomware is not doom for your files…

The Wztt ransomware encryption mechanism feature is next: it encrypts every file byte-by-byte, then saves a file copy, removing (not overriding!) the original file. Hence, the data of the file placement on the physical disk is lost, but the original file is not erased from the physical disk. The cell, or the sector where this file was stored, can still keep this file, but it is not present in the file system and can be rewritten by data that has been loaded to this disk after the deletion. Hence, it is possible to restore your files using special software.

Recovering your files with PhotoRec

PhotoRec is an open-source program, which is originally created for files recovery from damaged disks, or for files recovery in case if they are unintentionally deleted. However, with time flow, this program received the ability to retrieve the files of 400 different extensions. Hence, it can be used for data recovery after the Wztt attack.

First, you need to download this app. It is 100% free, but the developer states that there is no warranty that the files will be restored. PhotoRec is spread together with other tool of the same developer – TestDisk. The downloaded archive will have TestDisk name, but don’t worry. PhotoRec files are right inside.

To launch PhotoRec, find and open “qphotorec_win.exe” file. No installation process is required – the program has all the files it need inside of the archive, hence, you can fit it on your USB drive, and try to help your friends/parents/anyone who has been attacked by Wztt ransomware.

Upon the launch, you will observe the screen showing you the entire list of your disk spaces. However, this data is likely irrelevand, because the required menu is placed a bit higher. Click this bar, then choose the disk which was attacked by ransomware.

After opting for the disk, you need to select the destination folder for the recovered files. This menu is located at the lower part of the PhotoRec window. The best selection is to export them on USB drive or any other type of removable disk.

Then, you need to specify the file formats. This feature is located at the bottom, too. As it was mentioned, PhotoRec can recover the files of about 400 different formats.

Finally, you can initiate files recovery by pressing the “Search” button. You will view the screen where the findings of the scan and recovery are shown.

Wztt files recovery Video Guide.

Frequently Asked Questions

1. My files are encrypted by ransomware, what should I do now?
2. About DJVU (STOP) Ransomware.

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