WISZ Ransomware Virus: How It Works & What To Do If Infected

Ransomware attacks have been on the rise, inflicting damage and extorting money from victims globally. The latest emerging threat is a new variant called WISZ ransomware. This insidious cyberattack encrypts personal files on infected devices and restricts access until a ransom is paid.

This comprehensive guide will provide an in-depth look at WISZ ransomware, how it works, detection signs, and most importantly, what you can do if you become a victim. With the right preventative measures and recovery steps, the impact of this virus can be minimized.

Wisz Ransomware

Overview of WISZ Ransomware

WISZ ransomware is the newest version of the notorious STOP/DJVU ransomware family. It uses robust encryption algorithms to lock files and appends the .WISZ extension to encrypted filenames. Once infected, victims cannot open their files, including documents, images, videos, and more.

The ransomware then displays a ransom note named _readme.txt with payment instructions. It demands payment in Bitcoin cryptocurrency to allegedly send a decryption key for restoring file access. If users see the .WISZ extension added to inaccessible files, it signifies an active infection.

WISZ joins the ranks of the most harmful ransomware threats. It can lead to permanent data loss if proper precautions are not exercised. Understanding how it spreads, encrypts, and demands payment is crucial to protect yourself.

Infection Vectors

WISZ ransomware uses various infection mediums to compromise devices:

  • Malicious email attachments (invoices, shipping notices)
  • Infected software installers and crack tools
  • Compromised websites and deceitful ads/pop-ups
  • External drives containing malware

Once executed on a system, the ransomware runs a scan searching for specific file types like documents, images, videos, and more.

Encryption Process

During the encryption phase, WISZ ransomware targets and encrypts selected file types using a symmetric AES algorithm. A unique encryption key is generated to lock each file.

The original files are deleted, leaving only encrypted versions with the .WISZ extension appended. This prevents any program from opening them, essentially holding your data hostage.

Ransom Demands

With files encrypted, WISZ displays a _readme.txt ransom note with payment instructions:

  • Contact the developers at support@fishmail.top and datarestorehelp@airmail.cc
  • Visit the payment website to purchase a decryptor tool
  • Pay the ransom in Bitcoin cryptocurrency
  • Ransom starts at $490 worth of Bitcoin and increases to $980 if not paid promptly

The note claims only they can provide the decryption key to restore data access. But even paying does not guarantee file recovery.

This is the ransom note that the WISZ ransomware will show to its victims:

ATTENTION!

Don’t worry, you can return all your files!
All your files like pictures, 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-oTIha7SI4s
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:
support@fishmail.top

Reserve e-mail address to contact us:
datarestorehelp@airmail.cc

Here is a summary of the WISZ ransomware:

  • Ransomware family: STOP/DJVU ransomware
  • Extensions: .WISZ
  • Ransomware note: _readme.txt
  • Ransom: From $490 to $980 (in Bitcoins)
  • Contact: support@fishmail.top and datarestorehelp@airmail.cc emails
  • Symptoms: The images, videos, and other documents have the “.WISZ” extension and cannot be opened by any programs
  • File recovery: Unfortunately, it is not currently possible to decrypt the files encrypted by the WISZ ransomware. It may, though, be possible in the future if the decryption keys are recovered from the cybercriminals’ servers. Therefore, if you do not plan on paying the ransom, it is advised that you make an image of the encrypted drives so that you can decrypt them in the future.

How WISZ Ransomware Works

Now let’s explore the step-by-step process of how a WISZ ransomware attack unfolds:

1. Initial Compromise

An infection begins by compromising a vulnerable system through an infected email attachment, malicious ad, compromised site, or other vector. Once clicked or accessed, the malicious payload secretly downloads.

2. Malware Execution

The malware payload then executes on the system, initiating the WISZ ransomware infection. It utilizes evasion techniques to avoid detection by antivirus software.

3. Environment Reconnaissance

WISZ scans the infected system’s environment, gathering information like the operating system version, system language, computer name, and more.

4. Internal Network Propagation (Optional)

If connected to a larger network, WISZ may attempt to spread laterally to infect more devices and servers. It leverages techniques like SMB exploitation.

5. Targeted Encryption

WISZ initiates an encryption loop, scanning for and encrypting high-value files like documents, images, videos, databases, and source code. Each file is encrypted with a unique key.

6. Appending New Extension

The original files are deleted after encryption. The encrypted versions receive the .WISZ extension appended to the filenames.

7. Ransom Note Deployment

The ransomware drops _readme.txt containing payment instructions to allegedly decrypt files by purchasing a tool from the attackers.

8. Persistence Mechanisms

To maintain access, WISZ deploys persistence techniques like creating registry run keys and scheduled tasks to execute on system reboots.

9. Command & Control Communication

Finally, WISZ contacts the command & control servers operated by the threat actors to report a successful infection and transmit data.

This multi-stage attack chain allows WISZ to infiltrate systems, encrypt data, and demand ransom payments. Understanding how it works can help equip you with defenses.

What To Do If You Are Infected

Falling victim to WISZ can be devastating but do not panic. There are steps you can take to handle the infection and work to recover files. Here are tips if your system is compromised:

1. Isolate the Infected Device

Disconnect the infected computer from any networks or external devices immediately. This prevents further spreading of the ransomware.

2. Take Photos of the Ransom Note

Photograph any ransom notes or payment instructions that appear. Save this evidence in case it disappears during deeper analysis.

3. Check for Encrypted Files

Search for file types like DOC, JPG, PDF that now have the .WISZ extension. This confirms the presence of file encryption.

4. Report the Crime

Contact law enforcement and cybersecurity authorities to report the ransomware attack. Provide any evidence like the ransom note.

5. Seek Help from IT Security Firms

Engage IT security firms that specialize in ransomware attacks. They may assist with remediation and file recovery efforts.

6. Avoid Paying the Ransom

As difficult as it may be, avoid paying the ransom. There are no guarantees you will get decryption keys or file access.

7. Restore from Backups

Check if clean file backups exist that can restore your data. Ensure backups are disconnected from infected systems first.

8. Use Shadow Volume/System Restore

If available, leverage Shadow Volume copies or System Restore to recover previous versions of encrypted files.

9. Reset Passwords and Accounts

Once your system is clean, reset all account passwords and credentials to prevent further misuse.

10. Monitor Accounts and Credit

Keep close watch on accounts and financial statements for any fraudulent activity following an infection.

While WISZ’s encryption is robust, taking prompt action gives you the best chance of recovering your data. Be ready with contingency plans in case of infection.

Remove the WISZ ransomware and recover the files

It’s important to understand that by starting the removal process you risk losing your files, as we cannot guarantee that you will be able to recover them. Your files may be permanently compromised when trying to remove this infection or trying to recover the encrypted documents.
We cannot be held responsible for losing your files or documents during this removal process.

It’s recommended to create a backup image of the encrypted drives or files before proceeding with the malware removal instructions so that you can restore them if the decryption keys are recovered from the cybercriminals’ servers. To create a backup for your encrypted files or drives, you can use EaseUS Todo Backup Free.

This malware removal guide may appear overwhelming due to the number of steps and numerous programs that are being used. We have only written it this way to provide clear, detailed, and easy-to-understand instructions that anyone can use to remove malware for free.
Please perform all the steps in the correct order. If you have any questions or doubts at any point, stop and ask for our assistance.
To remove the WISZ ransomware, follow these steps:

STEP 1: Start your computer in Safe Mode with Networking

In this first step, we will start your computer in Safe Mode with Networking to prevent WISZ malicious drivers and services from loading at Windows start-up. We’re using Safe mode because it starts Windows in a basic state, using a limited set of files and drivers.

Windows 11Windows 10Windows 7
Before you enter Safe Mode, you need to enter the Windows Recovery Environment (winRE). To do this, follow the below steps:

  1. Press Windows logo key + I on your keyboard to open Settings. If that doesn’t work, right-click on the Start button, then select Settings. In the right window, click on Recovery.
    Go to Windows Settings
  2. Under Advanced startup, select Restart now.
    Recovery window in Windows 10

Now that you are in Windows Recovery Environment, you will follow these steps to take you to safe mode:

  1. On the Choose an option screen, select “Troubleshoot“.
    Windows 11 - Start in Safe Mode with Network
  2. On the “Troubleshoot” screen, click the “Advanced Options” button.
    Windows 11 - Start in Safe Mode with Network - Step 2
  3. On the “Advanced Options” page, click the “Startup Settings” option.
    Windows 11 - Start in Safe Mode with Network - Step 3
  4. On the “Startup Settings” page, click the “Restart”.
    Windows 11 - Start in Safe Mode with Network - Step 4
  5. After your device restarts, you’ll see a list of options. Select option 5 from the list or press F5 to enter Safe Mode with Networking.
    Boot in Safe Mode Windows 11
  6. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2).
Before you enter Safe Mode, you need to enter the Windows Recovery Environment (winRE). To do this, follow the below steps:

  1. Press the Windows logo key + I on your keyboard to open Settings. If that doesn’t work, select the Start button, then select Settings.
    Go to Windows Settings
  2. When the Windows Settings window opens, select Update & Security, then click on Recovery.
    Recovery window in Windows 10
  3. Under Advanced startup, select Restart now.
    Open Advance Startup

Now that you are in Windows Recovery Environment, you will follow these steps to take you to safe mode:

  1. On the Choose an option screen, select “Troubleshoot“.
    Windows 10 - Start in Safe Mode with Network
  2. On the “Troubleshoot” screen, click the “Advanced Options” button.
    Windows 10 - Start in Safe Mode with Network - Step 2
  3. On the “Advanced Options” page, click the “Startup Settings” option. In Windows 8, this option is labeled “Windows Startup Settings” instead.
    Windows 10 - Start in Safe Mode with Network - Step 3
  4. On the “Startup Settings” page, click the “Restart”.
    Windows 10 - Start in Safe Mode with Network - Step 4
  5. After your device restarts, you’ll see a list of options. Select option 5 from the list or press F5 to enter Safe Mode with Networking.
    Boot in Safe Mode Windows 10
  6. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2).
  1. Remove all floppy disks, CDs, and DVDs from your computer, and then restart your computer.
  2. When the computer starts you will see your computer’s hardware being listed. When you see this information start to press the F8 key repeatedly until you are presented with the Advanced Boot Options.
    F8 Safe Mode
  3. In the Advanced Boot Options screen, use the arrow keys to highlight Safe Mode with Networking and then press Enter.
    Safe Mode with Networking screen
  4. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2). In some cases, victims may have issues while trying to start the computer in Safe Mode with Networking, if this happens, you can try to scan your computer with Malwarebytes in normal mode.

STEP 2: Use Malwarebytes to remove WISZ ransomware

While the computer is in Safe Mode with Networking, we will download, install and run a system scan with Malwarebytes.

Malwarebytes stands out as one of the leading and widely-used anti-malware solutions for Windows, and for good reason. It effectively eradicates various types of malware that other programs often overlook, all at no cost to you. When it comes to disinfecting an infected device, Malwarebytes has consistently been a free and indispensable tool in the battle against malware. We highly recommend it for maintaining a clean and secure system.

  1. Download Malwarebytes for Windows

    You can download Malwarebytes by clicking the link below.

    MALWAREBYTES FOR WINDOWS DOWNLOAD LINK
    (The above link will open a new page from where you can download Malwarebytes)
  2.  

    Install Malwarebytes

    After the download is complete, locate the MBSetup file, typically found in your Downloads folder. Double-click on the MBSetup file to begin the installation of Malwarebytes on your computer. If a User Account Control pop-up appears, click “Yes” to continue the Malwarebytes installation.

    MBAM1
  3. Follow the On-Screen Prompts to Install Malwarebytes

    When the Malwarebytes installation begins, the setup wizard will guide you through the process.

    • You’ll first be prompted to choose the type of computer you’re installing the program on—select either “Personal Computer” or “Work Computer” as appropriate, then click on Next.

      MBAM3 1
    • Malwarebytes will now begin the installation process on your device.

      MBAM4
    • When the Malwarebytes installation is complete, the program will automatically open to the “Welcome to Malwarebytes” screen.

      MBAM6 1
    • On the final screen, simply click on the Open Malwarebytes option to start the program.

      MBAM5 1
  4. Enable “Rootkit scanning”.

    Malwarebytes Anti-Malware will now start, and you will see the main screen as shown below. To maximize Malwarebytes’ ability to detect malware and unwanted programs, we need to enable rootkit scanning. Click on the “Settings” gear icon located on the left of the screen to access the general settings section.

    MBAM8

    In the settings menu, enable the “Scan for rootkits” option by clicking the toggle switch until it turns blue.

    MBAM9

    Now that you have enabled rootkit scanning, click on the “Dashboard” button in the left pane to get back to the main screen.

  5. Perform a Scan with Malwarebytes.

    To start a scan, click the Scan button. Malwarebytes will automatically update its antivirus database and begin scanning your computer for malicious programs.

    MBAM10
  6. Wait for the Malwarebytes scan to complete.

    Malwarebytes will now scan your computer for browser hijackers and other malicious programs. This process can take a few minutes, so we suggest you do something else and periodically check the status of the scan to see when it is finished.

    MBAM11
  7. Quarantine detected malware

    Once the Malwarebytes scan is complete, it will display a list of detected malware, adware, and potentially unwanted programs. To effectively remove these threats, click the “Quarantine” button.

    MBAM12

    Malwarebytes will now delete all of the files and registry keys and add them to the program’s quarantine.

    MBAM13

  8. Restart your computer.

    When removing files, Malwarebytes may require a reboot to fully eliminate some threats. If you see a message indicating that a reboot is needed, please allow it. Once your computer has restarted and you are logged back in, you can continue with the remaining steps.

    MBAM14

When the malware removal process is complete, your computer should start in normal mode (if not, simply restart your device to exit Safe Mode) and continue with the rest of the instructions. We do recommend that you run another scan with Malwarebytes once you’re in Normal mode to make sure all the malicious files were removed.


STEP 3: Use HitmanPro to scan for Trojans and other malware

In this third step, while the computer is in normal back, we will download and run a scan with HitmanPro to remove the WISZ ransomware and other malicious programs.

HitmanPro is a second-opinion scanner that takes a unique cloud-based approach to malware scanning. HitmanPro scans the behavior of active files and also files in locations where malware normally resides for suspicious activity. If it finds a suspicious file that’s not already known, HitmanPro sends it to its clouds to be scanned by two of the best antivirus engines today, which are Bitdefender and Kaspersky.

Although HitmanPro is shareware and costs $24.95 for 1 year on 1 PC, there is no limit on scanning. The limitation only kicks in when there is a need to remove or quarantine detected malware by HitmanPro on your system and by then, you can activate the one-time 30-days trial to enable the cleanup.

  1. Download HitmanPro.

    You can download HitmanPro by clicking the link below.

    HITMANPRO DOWNLOAD LINK
    (The above link will open a new web page from where you can download HitmanPro)
  2. Install HitmanPro.

    When HitmanPro has finished downloading, double-click on “hitmanpro.exe” (for 32-bit versions of Windows) or “hitmanpro_x64.exe” (for 64-bit versions of Windows) to install this program on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Double-click on the HitmanPro file

    You may be presented with a User Account Control pop-up asking if you want to allow HitmanPro to make changes to your device. If this happens, you should click “Yes” to continue with the installation.

    Windows asking for permissions to run the HitmanPro setup

  3. Follow the on-screen prompts.

    When HitmanPro starts you will be presented with the start screen as shown below. Click on the “Next” button to perform a system scan.

    Click Next to install HitmanPro on your PC

    HitmanPro final installer screen

  4. Wait for the HitmanPro scan to complete.

    HitmanPro will now begin to scan your computer for malicious programs.
    HitmanPro scans your computer for any infections, adware, or potentially unwanted programs that may be present

  5. Click on “Next”.

    When HitmanPro has finished the scan, it will display a list of all the malware that it has found. Click on the “Next” button to have HitmanPro remove the detected items.

    HitmanPro scan summary. Click Next to remove malware

  6. Click on “Activate free license”.

    HitmanPro may now require to activate the free 30-days trial to remove the malicious files. To do this, click on the “Activate free license” button to begin the free 30 days trial and remove all the malicious files from your computer.
    Click on the Activate free license button

    When the malware removal process is complete, it will display a screen that shows the status of the various programs that were removed. At this screen, you should click on the Next button and then if prompted you should click on the Reboot button. If HitmanPro does not prompt you to reboot, please just click on the Close button.


STEP 4: Double-check for malicious programs with ESET Online Scanner

In this fourth step, we run a scan with ESET Online Scanner to remove any leftover files from the WISZ ransomware and other malicious programs.

ESET Online Scanner is a free second-opinion scanner, designed to rescue your computer from malware (viruses, trojans, rootkits, etc.) that have infected your computer despite all the security measures you have taken (such as anti-virus software, firewalls, etc.).

  1. Download ESET Online Scanner.

    You can download ESET Online Scanner by clicking the link below.

    ESET ONLINE SCANNER DOWNLOAD LINK

    (The above link will open a new web page from where you can download ESET Online Scanner)
  2. Double-click on esetonlinescanner.exe to run the installer.

    When ESET Online Scanner has finished downloading, double-click on “esetonlinescanner.exe” to install it program on your computer. In most cases, downloaded files are saved to the Downloads folder.
    Image - Double-click on the ESET Online Scanner setup file

  3. Install ESET Online Scanner.

    When ESET Online Scanner starts you will be presented with the start screen as shown below. Select your desired language from the drop-down menu and click Get started.

    Image - Click Get Started to install ESET Online Scanner

    In the Terms of use screen, click Accept.
    Image - Accept Terms to Install ESET Online Scanner

    Select your preference for the Customer Experience Improvement Program and the Detection feedback system and click Continue.
    Image - Follow the on-screen prompts

  4. Start a Full Scan with ESET Online Scanner

    Click on Full Scan to perform an in-depth inspection of the entire computer.

    Start a Full Scan with ESET Online Scanner

    Select Enable for Detection of Potentially Unwanted Applications, then click Start scan.

    Image - Enable PUA Detection and Start Scan

  5. Wait for the ESET Online Scanner scan to finish.

    ESET Online Scanner will now begin to scan your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Image- Wait for the ESET Online Scanner scan to finish

  6. ESET Online Scanner will automatically remove the malicious files.

    At the end of the scan, the Found and resolved detections screen will be displayed. You can click View detailed results to view specific information. Detected threats are automatically cleaned and quarantined.
    Image - ESET Online Scanner malware removal


STEP 5: Restore the files encrypted by the WISZ ransomware

Unfortunately, in most cases, it’s not possible to recover the files encrypted by this ransomware because the private key which is needed to unlock the encrypted files is only available through the attackers. However, below we’ve listed three options you can use to try and recover your files.

Make sure you remove the malware from your computer first, otherwise, it will repeatedly lock your system or encrypt files. If you suspect that your computer is still infected with malware, you can run a free scan with Emsisoft Emergency Kit.

Option 1: Use Emsisoft Decryptor for STOP Djvu to restore the files

If your files were encrypted with an offline key there is a chance you can recover them by using Emsisoft Decryptor for STOP Djvu decryption tool. Follow the below guide to recover your files using the Emsisoft Decryptor for STOP Djvu.

  1. Download Emsisoft Decryptor for STOP Djvu

    You can download Emsisoft Decryptor for STOP Djvu by clicking the link below.

    EMSISOFT DECRYPTOR FOR STOP DJVU DOWNLOAD LINK

    (The above link will open a new web page from where you can download Emsisoft Decryptor for STOP Djvu)
  2. Run Emsisoft Decryptor for STOP Djvu

    When Emsisoft Decryptor for STOP Djvu has finished downloading, double-click on “decrypt_STOPDjvu.exe” to run this program on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Double-click on the Emsisoft Decryptor for STOP Djvu icon to decrypt the encrypted files

    You may be presented with a User Account Control pop-up asking if you want to allow Emsisoft to make changes to your device. If this happens, you should click “Yes” to continue with the installation.

  3. Follow the on-screen prompts

    When the Emsisoft Decryptor for STOP Djvu starts, you will need to agree with the Terms and accept a disclaimer.
    Click Yes to Continue to decrypt this ransomware

  4. Click on “Decrypt”.

    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.

    Click Decrypt to recover from this ransomware attack

  5. The decryptor will inform you once the decryption process is finished. If you require the report for your records, you can save it by clicking the “Save log” button. If your system was compromised through the Windows Remote Desktop feature, we also recommend changing all passwords of all users that are allowed to login remotely and checking the local user accounts for additional accounts the attacker might have added.

If the “Emsisoft Decryptor for STOP Djvu” can’t decrypt your documents and you do not plan on paying the ransom, it is advised that you make an image of the encrypted drives so that you can decrypt them in the future.

Option 2: Search for a ransomware decryption tool

The cybersecurity community is constantly working to create ransomware decryption tools, so you can try to search these sites for updates:

Option 3: Use EaseUS Data Recovery Wizard Free to recover the encrypted files

EaseUS Data Recovery Wizard Free can restore files and repair corrupted files with simple clicks. Its powerful scanning algorithms can identify and retrieve huge file type library, including all of the popular video files, audio files, photos, and document formats.
While the free version only allows you to recover 2 GB of data, this can be helpful to see if the recovery is possible and restore back the most important files from your computer.

  1. Download EaseUS Data Recovery Wizard Free.

    You can download EaseUS Data Recovery Wizard Free by clicking the link below.

    EASEUS DATA RECOVERY WIZARD FREE DOWNLOAD LINK

    (The above link will open a new page from where you can download EaseUS Data Recovery Wizard)
  2. Double-click on the EaseUS Data Recovery Wizard Free setup file.

    When EaseUS Data Recovery Wizard Free has finished downloading, double-click on the setup file to install EaseUS Data Recovery Wizard on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Image: EaseUS Data Recovery Wizard Free Installer

    You may be presented with a User Account Control pop-up asking if you want to allow EaseUS to make changes to your device. If this happens, you should click “Yes” to continue with the EaseUS Data Recovery Wizard Free installation.

  3. Follow the on-screen prompts to install EaseUS Data Recovery Wizard.

    When the EaseUS Data Recovery Wizard installation begins, click on the “Install Now” as seen in the image below.
    EaseUS Data Recovery Wizard Free Install Now

    When your EaseUS Data Recovery Wizard installation completes, click the “Start Now” button to start the program.
    Image: Click Start Now

  4. Select a location to start recovering the encrypted files.

    Choose the drive or folder where you are the encrypted files that you want to recover and click “Scan“.
    Select a location to start recovering the encrypted files

  5. Wait for the EaseUS Data Recovery Wizard scan to complete.

    EaseUS Data Recovery Wizard will now scan your computer files that can be restored. This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.
    Image: Wait for the EaseUS Data Recovery Wizard scan to complete.

  6. Find the files you want to recover.

    When the EaseUS Data Recovery Wizard scan is finished scanning it will show a screen that displays the files that can be recovered. This tool can recover a lot of data, use the “Filter” button to quickly filter specific file types and find the files that you want to recover.
    Filter the Files by Type

    Click the “Preview” button or double-click on a file for a full preview.
    Image: Click Preview to view the file

  7. Select your files and click “Recover”.

    Finally, select the the files you want to recover and click “Recover“.
    Select your files and click Recover
    Choose a safe location to save all the files.
    Select a safe location
    The free version only allow you to recover 2 GB of data, however, this will allow you to recover the most important files and see if EaseUS Data Recovery Wizard can correctly recover them.
    Image: View Recovered Files

Your computer should now be free of the WISZ ransomware infection and other malware.

If your current antivirus allowed this malicious program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.
If you are still having problems with your computer after completing these instructions, then please follow one of the steps:

Frequently Asked Questions About the WISZ Ransomware Scam

Ransomware attacks like WISZ are becoming increasingly common, inflicting heavy losses on individuals and businesses. If you’ve fallen victim to this insidious scam, you likely have many questions and concerns. This FAQ guide provides answers to the most common queries regarding WISZ ransomware.

What is the WISZ ransomware?

WISZ is a variant of the notorious STOP/DJVU ransomware family. It’s a file-encrypting malware that locks down your personal photos, documents, databases and other critical files by appending the .WISZ extension to filenames. Victims cannot access the encrypted data until they pay the hefty ransom demanded.

How does the WISZ ransomware infect your computer?

WISZ ransomware uses various techniques to infiltrate systems, including phishing emails, infected downloads, compromised websites, malvertising and exploiting weak Remote Desktop Protocol (RDP) passwords.

What types of files does WISZ ransomware encrypt?

WISZ ransomware targets and encrypts crucial file types and extensions like Office documents (.doc, .xls, .ppt), photos (.jpg, .png, .tiff), PDFs, videos, databases and more.

Can I recover my files encrypted by WISZ without paying ransom?

Unfortunately, the robust encryption used by WISZ makes direct decryption of files difficult currently. Your best options are restoring files from backups unaffected by the attack or waiting for free decryption tools in the future.

What is the ransom note displayed by WISZ ransomware?

WISZ ransomware drops the _readme.txt ransom note on the Windows desktop post-encryption. This contains payment instructions and demands $490-$980 in Bitcoin to restore file access.

What contact email addresses does WISZ ransomware provide?

The ransom note provides the support@fishmail.top and datarestorehelp@airmail.cc email addresses to contact the malware authors for file decryption after payment.

Should I pay the ransom amount demanded by WISZ ransomware?

Security experts strongly advise against paying the ransom, as it incentivizes cybercriminals without any guarantee you’ll regain file access. Focus on restoring encrypted files through backups instead.

How can I recover and remove WISZ ransomware from my system?

Isolate your infected device immediately and use reputed antivirus software to eliminate the malware. Restore encrypted files from backups if possible, or wait for decryption tools. Also strengthen system defenses going forward.

What security measures can I take to prevent WISZ ransomware infection?

Keep your software updated and use robust antivirus protection. Exercise caution with emails and downloads. Maintain regular backups of important data. Restrict folder permissions and enable firewalls to prevent unauthorized network activity.

Who should I contact if infected with WISZ ransomware?

Promptly report infections to cybersecurity authorities and law enforcement agencies. Engage professional incident response teams to contain the attack, safely restore data, and implement improved defenses against ransomware.

What should businesses do to protect against WISZ ransomware?

Businesses should implement comprehensive security like multi-factor authentication, advanced endpoint protection, firewalls, staff security training and regular backups to defend against WISZ and other ransomware effectively.

Let me know if you need any clarification or have additional questions!

The Bottom Line

WISZ ransomware represents a dangerous new threat capable of inflicting damage through robust encryption tactics. Understanding this malware family provides the knowledge to secure your systems and data.

If compromised, remain calm and utilize the right resources to disable the infection. Avoid paying ransoms, as there are no guarantees. With vigilance and safe computing, the devastating impact of ransomware like WISZ can be minimized.

Protect yourself with layered security, updated systems, and offline backups. And ensure everyone is trained to identify threats like phishing emails that distribute ransomware. With cooperation, education, and research, we can fight back against ransomware attackers.

How to Stay Safe Online

Here are 10 basic security tips to help you avoid malware and protect your device:

  1. Use a good antivirus and keep it up-to-date.

    Shield Guide

    It's essential to use a good quality antivirus and keep it up-to-date to stay ahead of the latest cyber threats. We are huge fans of Malwarebytes Premium and use it on all of our devices, including Windows and Mac computers as well as our mobile devices. Malwarebytes sits beside your traditional antivirus, filling in any gaps in its defenses, and providing extra protection against sneakier security threats.

  2. Keep software and operating systems up-to-date.

    updates-guide

    Keep your operating system and apps up to date. Whenever an update is released for your device, download and install it right away. These updates often include security fixes, vulnerability patches, and other necessary maintenance.

  3. Be careful when installing programs and apps.

    install guide

    Pay close attention to installation screens and license agreements when installing software. Custom or advanced installation options will often disclose any third-party software that is also being installed. Take great care in every stage of the process and make sure you know what it is you're agreeing to before you click "Next."

  4. Install an ad blocker.

    Ad Blocker

    Use a browser-based content blocker, like AdGuard. Content blockers help stop malicious ads, Trojans, phishing, and other undesirable content that an antivirus product alone may not stop.

  5. Be careful what you download.

    Trojan Horse

    A top goal of cybercriminals is to trick you into downloading malware—programs or apps that carry malware or try to steal information. This malware can be disguised as an app: anything from a popular game to something that checks traffic or the weather.

  6. Be alert for people trying to trick you.

    warning sign

    Whether it's your email, phone, messenger, or other applications, always be alert and on guard for someone trying to trick you into clicking on links or replying to messages. Remember that it's easy to spoof phone numbers, so a familiar name or number doesn't make messages more trustworthy.

  7. Back up your data.

    backup sign

    Back up your data frequently and check that your backup data can be restored. You can do this manually on an external HDD/USB stick, or automatically using backup software. This is also the best way to counter ransomware. Never connect the backup drive to a computer if you suspect that the computer is infected with malware.

  8. Choose strong passwords.

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    Use strong and unique passwords for each of your accounts. Avoid using personal information or easily guessable words in your passwords. Enable two-factor authentication (2FA) on your accounts whenever possible.

  9. Be careful where you click.

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    Be cautious when clicking on links or downloading attachments from unknown sources. These could potentially contain malware or phishing scams.

  10. Don't use pirated software.

    Shady Guide

    Avoid using Peer-to-Peer (P2P) file-sharing programs, keygens, cracks, and other pirated software that can often compromise your data, privacy, or both.

To avoid potential dangers on the internet, it's important to follow these 10 basic safety rules. By doing so, you can protect yourself from many of the unpleasant surprises that can arise when using the web.