Severity scale:  
  (98/100)

AVCrypt ransomware. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware

AVCrypt – ransomware that tries to uninstall security program on the affected Windows PC

AVCrypt ransom note

AVCrypt is a malicious program that is designed to uninstall antivirus and security software on the targeted computer. Currently, it’s unknown if the virus is in-development ransomware or a wiper. However, the virus drops an empty +HOW_TO_UNLOCK.txt file which is supposed to be ransom note.

Summary
Name AVCrypt
Type Ransomware
Danger level High. Makes system changes, deletes files and antivirus software
Symptoms Encrypted files, deleted antivirus
Distribution methods Malicious spam emails, bogus software downloads and updates, exploit kits, etc.
To uninstall AVCrypt install Reimage and run a full system scan.

However, the significant feature of the AVCrypt virus is the ability to remove security programs soon after the infiltration. The malicious program specifically targets Windows Defender and Malwarebytes and deletes Windows services in order to stop their proper operation.

Furthermore, AVCrypt queries to check what antivirus program is registered with Windows Security Center.[1] Then it uses WMIC[2] in order to delete it. However, the recent analysis tells that malware is not able to eliminate all security programs, meaning that some tool can be immune and used for virus elimination.

AVCrypt malware has features of both ransomware and a wiper. Therefore, it has features of both. It might delete specific Windows service to cause problems with proper work of the operating system. However, apart from that, this cyber threat is designed to encrypt files and drops a ransom note soon after that.

AVCrypt ransomware does not start encryption immediately after infiltration. It remains still for a while and then connects to Command and Control server via TOR. The server responds with:

  • encryption key;
  • timezone;
  • a version of the targeted Windows system.

However, during this procedure, some errors occur, and this allows assuming that malware is still under construction. Before running system scan for data encryption, malware deletes antivirus programs. During the encryption, malware renames files using this path:

+[original_name]

Following the encryption AVCrypt ransomware creates a previously mentioned +HOW_TO_UNLOCK.txt file in each folder that contains the encrypted files. Undoubtedly, this file is supposed to be ransom note. However, it includes “lol n” message, and nothing else: no data recovery instructions, no Bitcoin demands, no contact email address. Though, it is expected that malware is still in-dev mode and might be updated to full ransomware anytime soon.

Currently, Microsoft detects this cyber threat as Ransom:Win32/Pactelung.A, so it can be deleted with a professional security software. We highly recommend urging AVCrypt removal because it already has destructive features and makes the system vulnerable. Though, it can be updated any minute.

The virus modifies and adds new Windows Registry values, deletes its files, event logs, ransomware processes and wipes out autorun entry. To clean the computer and fix the damage, we recommend you to remove AVCrypt with Reimage.

Possible ways to get infected with malware

The specific methods how this destructive malware spreads are unknown. Cybercriminals might be using one of the following popular strategies:

  • malicious spam email attachments;
  • malvertising;
  • bogus software updates or downloads;
  • exploit kits.

Therefore, paying attention to general security tips is needed to avoid cyber attacks. Additionally, specialists from NoVirus.uk[3] remind to install a reputable antivirus program and keep it update as well as other programs and operating system. Additionally, we urge to make data backups and update them regularly as well. After ransomware attack, they save you from the loss of important information.

Uninstall AVCrypt ransomware virus

For AVCrypt removal, you have to use professional security software. Indeed, the virus can delete a security software that is installed on your PC. Though, you may need to install a new tool. However, you should reboot the computer to Safe Mode with Networking first to disable the virus as shown below.

If you are not sure what program to choose for elimination, you can use Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware. We can ensure that these tools can remove AVCrypt entirely. Moreover, if you do not have data backups and need file recovery solutions, try the methods suggested below.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall AVCrypt ransomware. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
Press mentions on Reimage

Manual AVCrypt virus Removal Guide:

Remove AVCrypt using Safe Mode with Networking

This method helps to disable the virus and run its automatic elimination.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove AVCrypt

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete AVCrypt removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove AVCrypt using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of AVCrypt. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that AVCrypt removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove AVCrypt from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by AVCrypt, you can use several methods to restore them:

Data Recovery Pro can help to restore some files

Some of the encrypted files can be restores with Data Recovery Pro. Though, it's not an official AVCrypt ransomware decryptor.

Try ShadowExplorer

AVCrypt deletes numerous Windows files and kills processes. However, if it fails to delete Shadow Volume Copies of the targeted files, you should be able to restore some of the data with ShadowExplorer.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

AVCrypt decryptor is not available.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from AVCrypt and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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References

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