Remove Zwer Ransomware Virus

By Chona Esjay | Posted on June 9, 2020 |

Cyrpto-virus assaults are seemly excessive these days and computer defense experts sustain on casting warnings to computing community about this perilous menace; hence, there are still many computers being contaminated with this highly hazardous threat due to inattentive of users with regards to online safety. Indeed, there is an unexampled growth of attack in recent years and one of the top offenders is DJVU or STOP ransomware class. This family of virus has produce over a hundred of variants because their handlers found that file-locking virus is a faultless instrument to smoothly cheat cash from victims.

This day, new variant from the notorious family has appeared with alias Zwer ransomware. Similar to former versions, this latest threat was designate to taint major files on the computer by encoding them with a intricate algorithm. The ransom virus also unite a suffix .zwer extension to every enciphered file to recognize the infected file. To illustrate, a file 123word.docx will turn into 123word.docx.zwer after Zwer ransomware infects it. Reminding victims and telling them on how to progress with the restoration of .Zwer file is clearly given on the ransom note produced on the same place as compromised files.

As stated in the writing, victims are request to pay $980 in trade of personal private key and decryption software. However, makers of Zwer ransomware are ready to dispose the recovery items for only $490 if victims can match the 72 hours process duration from the period of commencing the first attack.

Zwer Ransomware

Beware that transaction with makers of Zwer ransom virus is highly perilous. As narrated on by experts and diverse computer protection websites, numerous preceding transactions with these online fraudsters did not precipitate well. The cyber criminals depart right away after accepting the ransom compensation without surrendering the private key and decryption software to rightful owner. Thus, they left the victims with still-encrypted files.

Obviously, determent and maintaining  the computer’s safety is always the essential to thwart this type of attack. Suggestions from security professionals to make it a practice to methodically back up essential files manifest to be the chief key to elude the infection and paying the ransom. Not to mention that it is easier to revive files from backup than going through the high-priced and time consuming decryption procedure.

How to Remove Zwer Ransomware

Ransomware files are placed deeply into the system and on various locations, thus, thorough scanning is vital to totally remove Zwer virus. Aside from our suggested tool, you may also run your own security program.

Though affected files may be impossible to decrypt due to complexity of the encryption, you can still try recovery method like alternative tool, Shadow Explorer or Previous Version as described below.

Stage 1: Scan the Computer with Anti-Malware Tool

1. Download free anti-malware scanner called MalwareBytes Anti-Malware.
Malwarebytes Anti-Malware Download Link (this will open a new window)

2. After downloading, install the program. It may run automatically or you have to double-click on the downloaded file MBSetup.exe.

3. Carry out the installation with default setup process.

4. After the installation process, click the Get Started button to launch the program.

5. Continue with the prompts until the main program opens.

6. On the main console, click on Scan to run most complete detection method to find hidden objects associated to Zwer ransomware.

7. Scanning may take a while. Please wait until the anti-malware tool is done with the checking.

MBAM-threatscan

8. Once the scan has completed, the tool will display the list of detected threats. Remove all identified malicious items and restart the computer if necessary.

Stage 2: Double-check for Zwer’s leftover with Microsoft’s Malicious Software Removal Tool

1. Download the free scanner called Malicious Software Removal Tool.
Malicious Software Removal Tool Download Link (this will open a new window)

download-msrt

2. The tool automatically checks the operating system and suggest appropriate download version. Click on Download button to begin. Save the file to a convenient location, preferably on Desktop.

3. After downloading the file, Windows will prompt that download has completed. Click Run to start scanning for Zwer ransomware. Another option is to browse the location folder and double click on the file to run.

msrt-icon

4. The tool will display Welcome screen, click Next. Please note the message “This tool is not a replacement for an antivirus product.” You must understand that this program is made specifically to find and remove malware, viruses, Trojans, and other harmful elements on the computer. It was not designed to protect the computer.

msrt1

5. Next, you will see Scan Type. Please choose Full Scan to ensure that all Zwer ransom virus entities and other harmful files left on the computer will be found and removed. For advanced computer user, you can opt for Customized Scan, if there are other drives or folders you wanted to include in this scan.

msrt2

6. Full scan may take a while, please wait for Malicious Software Removal Tool to complete the tasks. However, you may cancel the scan anytime by clicking on the Cancel button.

msrt3

7. After scanning, the tool will reveal all identified threats. There may be other threats that our first scan fails to detect. Please remove/delete all detected items.

8. When removal procedure is complete, you may now close Malicious Software Removal Tool. We hope that Zwer ransomware have been completely deleted from the computer. Please restart Windows to proceed with the normal operation.

Stage 3 : Unlocking files with Zwer Decryption Tool

Emsisoft Decryptor for STOP Djvu will work only if affected files were encrypted using Offline Keys. Zwer ransomware uses the alternate Offline Keys during encryption if there is a problem encountered while communicating to a remote command-and-control server. Follow the guide to start recovering .zwer encrypted files.

1. As precautionary measures, we suggest to BACKUP all your .zwer encrypted files first on a separate media (USB Drive, Flash Drive, DVD Discs, etc…).

2. Download Emsisoft Decryptor for STOP Djvu from this archive page.

3. Right-click on decrypt_STOPDjvu.exe and click “Run as Administrator“. Windows may prompt “Do you want to allow this app…” just click Yes to continue.

4. By default, the tool will pre-populate the locations where encrypted files were identified. To include other directories, simply click Add Folder button.

5. To start recovering files infected by Zwer ransomware, click on Decrypt button to start the procedure. The interface will display status of the current decryption process.

decrypt_STOPDjvu.exe

We will update this section once the full decryption tool is on hand. In the meantime, please try other options below if the above procedure is not not effective.

Option 1: Windows Previous Version Tool

Windows Vista and Windows 7 have a feature called Previous Versions. However, this tool is only usable if restore point was made prior to Zwer ransomware infection. To use this tool and recover files affected by the virus, please follow these steps:

1. Open My Computer or Windows Explorer.

2. Right-click on the affected files or folders. From the drop-down list, please click on Restore previous versions.

3. New window will open display all backup copy of files and folders you wanted to recover. Choose the appropriate file and click on Open, Copy, or Restore. Restoring selected files overwrites the current encrypted files on the computer.

Option 2: Use ShadowExplorer to restore files encrypted by Zwer Ransomware

Just like Previous Version tool, ShadowExplorer is taking advantage of shadow copy created by Windows. This tool allows you to retrieve older version of files before it was encrypted by Zwer ransomware.

1. Download ShadowExplorer from the official web site.

2. Install the program with the default settings.

3. The program should run automatically after installation. If not, double-click on ShadowExplorer icon.

4. You can see the drop-down list on top of the console. Please select proper drive and the most recent point-in-time shadow copies of files you wish to restore prior to Zwer ransomware infection.

shadow3

5. Right-click on the Drive, Folder, or File you wish to restore and click Export…

6. Lastly, ShadowExplorer will prompt for location where you want to save the copy of recovered files.

Leave a Reply

Your email address will not be published. Required fields are marked *