UIWIX virus. How to delete? (Removal tutorial)

removal by Jake Doevan - - | Type: Ransomware
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UIWIX ransomware is an example of fileless malware that infects computer systems using EternalBlue exploit

UIWIX virus is a dangerous ransomware program that attacks Windows operating system using the EternalBlue exploit. After gaining access to the target system, it encrypts files using AES-256 (CBC) and RC4 algorithms, adding ._[Victim’s ID].UIWIX file extensions to each filename. The virus then outputs a message from cyber criminals to _DECODE_FILES.txt file, which it saves on the desktop. Such ransom notes can be discovered in almost every folder that holds some encrypted files. The message from cyber criminals says that victim’s files were decoded and that the victim shouldn’t try to decrypt files using a third-party tool as this can result in permanent data loss. The virus provides several .onion URLs that point to a website that explains how to pay the ransom. The virus asks to pay $200 in Bitcoins, which is approximately 0.12126 BTC. IT security experts do not advise paying the ransom because it motivates cybercriminals to continue their evil activities and funds their future projects. Therefore, if your files were coded, better remove UIWIX using anti-malware programs like Reimage and take particular actions to protect yourself from ransomware attacks.

UIWIX ransomware website

The functionality and attack vectors of UIWIX remind us of WannaCry ransomware, the infamous virus that managed to infect over 230,000 machines worldwide during the cyber attack that took place on May 12, 2017. Both viruses are designed to address Windows vulnerability in Server Message Block (SMB) using EternalBlue exploit that was disclosed by Shadow Brokers on April 14, 2017. It appears that the viruses only target Windows XP, 8, 2003 OS, therefore, computers running Windows 10 won’t be affected. The fileless ransomware doesn’t have a kill switch like WannaCryptor virus does, however, it also doesn’t have worm-like features to spread over the network by itself. What is more, experts have discovered that the new ransomware is designed to terminate itself in case it detects sandbox or virtual box environment, also if the victim is a resident of the following countries: Russian, Kazakhstan, and Belarus. If this virtual extortion tool managed to encrypt files on your system, you need to have a data backup in order to recreate the lost records. If you do not have a backup, you might start thinking about the option of paying the ransom. Remember that you might receive nothing in exchange. To fix your computer so that you could continue using it, follow UIWIX removal guidelines provided below the article.

UIWIX ransomware virus

UIWIX ransomware attack vectors

Microsoft provides two possible explanations for the spread of UIWIX ransomware. The giant company believes that the malicious file is distributed via social engineering emails designed to deceive computer user and convince them to open the malware. The second possible explanation says that computers can be infected through SMB exploit when a vulnerable computer is reachable from other infected computers. It appears that attackers exploited SMB EternalBlue vulnerability (code CVE-2017-0145), which was already patched by Microsoft in security bulletin MS17-010. However, users who use computers running targeted Windows operating systems can still be infected in case they did not install special updates issued by Microsoft. In this case, Microsoft released security updates for operating systems that are no longer supported.

Remove UIWIX ransomware properly

It is extremely important to remove UIWIX virus using professional and powerful malware removal tool. This ransomware is extremely sophisticated, and the fact that employs fileless infection makes it hard to identify and remove it. However, using instructions prepared by NoVirus team will help you to clean your computer from ransomware’s remains. The UIWIX removal guide is presented below.

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If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Computer security experts recommend using Reimage to uninstall UIWIX virus. Reimage scans the entire computer system and checks whether it is infected with spyware/malware or not. If you want to remove computer threats and secure your computer system, you should consider buying the licensed version of Reimage.

You can find more details about this program in Reimage review.

You can find more details about this program in Reimage review.
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Manual UIWIX Virus Removal Instructions:

Eliminate UIWIX using Safe Mode with Networking

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

The UIWIX removal guide is provided below. The following instructions explain how to start the computer in a Safe Mode with Networking so that your anti-malware program could run.

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove UIWIX

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove UIWIX completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate UIWIX using System Restore

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

The following method should be used in case you cannot remove the virus using Method 1.

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of UIWIX and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of UIWIX.

Bonus: Restore your files

Using the tutorial provided above you should be able to eliminate UIWIX from the infected device. novirus.uk team has also prepared an in-depth data recovery guide which you will also find above.

Although WannaCry ransomware was defeated already, UIWIX is not developed by the same attackers and does not employ identical encryption methods to lock victim’s files, therefore, there is no decryption tool for UIWIX available. We advise victims to use the following data recovery methods.

There are a couple of methods you can apply to recover data encrypted by UIWIX:

Recover some files locked by UIWIX using Data Recovery Pro

Test this data recovery software known as Data Recovery Pro. The tool already proved to be extremely useful when dealing with piles of corrupted data.

  • Download Data Recovery Pro (https://novirus.uk/download/data-recovery-pro-setup.exe);
  • Install Data Recovery on your computer following the steps indicated in the software’s Setup;
  • Run the program to scan your device for the data encrypted by UIWIX ransomware;
  • Recover the data.

Attempt to use Windows Previous Versions feature

This methods works only in case the system holds a copy of Windows Previous Version. If you created System Restore Point in the past, try this method.

  • Right-click on the encrypted document you want to recover;
  • Click “Properties” and navigate to “Previous versions” tab;
  • In the “Folder versions” section look for the available file copies. Choose the desired version and press “Restore”.

No free UIWIX decryption tools available

At the moment, the only decryptor for .UIWIX files is being sold by cyber extortionists for $200. We do not recommend purchasing this tool as it can be malicious itself. Please be patient and keep up with the latest news about the virus – security researchers might successfully defeat it the way they defeated WannaCry.

It is strongly recommended to take precautions and secure your computer from malware attacks. To protect your PC from UIWIX and other dangerous viruses, you should install and keep a powerful malware removal tool, for instance, Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Jake Doevan - Do not waste your precious time dealing with computer virus infections alone

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