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23 June 2015
MyPC Backup
Risk Impact:
Systems Affected:


PUA.MyPCBackup is a potentially unwanted app that displays ads and popup notifications on the computer.

Note: Virus definitions dated June 23, 2015 or earlier detect this threat as MyPCBackup.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 17 September 2019 revision 023
  • Initial Daily Certified version 06 August 2014 revision 018
  • Latest Daily Certified version 12 August 2019 revision 001
  • Initial Weekly Certified release date 13 August 2014
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
The program may be bundled with third-party software.

When the program is installed, it creates the following folders:
  • %ProgramFiles%\MyPC Backup
  • %ProgramFiles%\MyPC Backup\~updates
  • %ProgramFiles%\MyPC Backup\Compressed
  • %ProgramFiles%\MyPC Backup\Config
  • %ProgramFiles%\MyPC Backup\Database
  • %ProgramFiles%\MyPC Backup\log
  • %ProgramFiles%\MyPC Backup\Resources
  • %ProgramFiles%\MyPC Backup\Resources\cache
  • %ProgramFiles%\MyPC Backup\Resources\keycache
  • %ProgramFiles%\MyPC Backup\x64
  • %ProgramFiles%\MyPC Backup\x86

It also creates the following files:
  • %ProgramFiles%\MyPC Backup\AlphaVSS.51.x86.dll
  • %ProgramFiles%\MyPC Backup\AlphaVSS.52.x64.dll
  • %ProgramFiles%\MyPC Backup\AlphaVSS.52.x86.dll
  • %ProgramFiles%\MyPC Backup\AlphaVSS.60.x64.dll
  • %ProgramFiles%\MyPC Backup\AlphaVSS.60.x86.dll
  • %ProgramFiles%\MyPC Backup\AlphaVSS.Common.dll
  • %ProgramFiles%\MyPC Backup\AWSSDK.dll
  • %ProgramFiles%\MyPC Backup\BackupStack.exe
  • %ProgramFiles%\MyPC Backup\Compressed\BACKUP_1407402565.clog
  • %ProgramFiles%\MyPC Backup\Config\api.cred
  • %ProgramFiles%\MyPC Backup\Config\api.ts2
  • %ProgramFiles%\MyPC Backup\Configuration Updater.exe
  • %ProgramFiles%\MyPC Backup\Crypto32.dll
  • %ProgramFiles%\MyPC Backup\Crypto64.dll
  • %ProgramFiles%\MyPC Backup\Database\mpcb_backup_conf.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_backup_id.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_file_cache.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_queues.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_settings.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_sig_cache.db
  • %ProgramFiles%\MyPC Backup\Database\mpcb_version_queue.db
  • %ProgramFiles%\MyPC Backup\
  • %ProgramFiles%\MyPC Backup\debug.txt
  • %ProgramFiles%\MyPC Backup\diffstack.dll
  • %ProgramFiles%\MyPC Backup\
  • %ProgramFiles%\MyPC Backup\
  • %ProgramFiles%\MyPC Backup\GetText.dll
  • %ProgramFiles%\MyPC Backup\
  • %ProgramFiles%\MyPC Backup\LinqBridge.dll
  • %ProgramFiles%\MyPC Backup\log\APPLICATION.log
  • %ProgramFiles%\MyPC Backup\log\AUTH.log
  • %ProgramFiles%\MyPC Backup\log\BACKUP.log
  • %ProgramFiles%\MyPC Backup\log\FOOTER.log
  • %ProgramFiles%\MyPC Backup\log\GRID_RECOVERY_INIT.log
  • %ProgramFiles%\MyPC Backup\log\LICENCE.log
  • %ProgramFiles%\MyPC Backup\log\NETWORK_SHARES.log
  • %ProgramFiles%\MyPC Backup\log\REMOTING.log
  • %ProgramFiles%\MyPC Backup\log\RESTRICTIONS.log
  • %ProgramFiles%\MyPC Backup\log\SERVICE.log
  • %ProgramFiles%\MyPC Backup\log\SETTINGS.log
  • %ProgramFiles%\MyPC Backup\log\SHELL.log
  • %ProgramFiles%\MyPC Backup\log\SIGNUP_WIZ.log
  • %ProgramFiles%\MyPC Backup\log\UPDATER.log
  • %ProgramFiles%\MyPC Backup\log\UTC_MIGRATION.log
  • %ProgramFiles%\MyPC Backup\log\WAIT_HANDLES.log
  • %ProgramFiles%\MyPC Backup\LogicNP.EZShellExtensions.dll
  • %ProgramFiles%\MyPC Backup\MPCBClient.dll
  • %ProgramFiles%\MyPC Backup\MPCBContextMenu.dll
  • %ProgramFiles%\MyPC Backup\MPCBIconOverlays.dll
  • %ProgramFiles%\MyPC Backup\MyPC Backup.exe
  • %ProgramFiles%\MyPC Backup\mypcbackup.ico
  • %ProgramFiles%\MyPC Backup\ObjectListView.dll
  • %ProgramFiles%\MyPC Backup\
  • %ProgramFiles%\MyPC Backup\RegisterExtensionDotNet20_x64.exe
  • %ProgramFiles%\MyPC Backup\RegisterExtensionDotNet20_x86.exe
  • %ProgramFiles%\MyPC Backup\Resources\keycache\_e5066839-ddb3-49da-b0d1-55ccaf25332e_backupKeyCache.block
  • %ProgramFiles%\MyPC Backup\Resources\keycache\_e5066839-ddb3-49da-b0d1-55ccaf25332e_backupKeyCache.tree
  • %ProgramFiles%\MyPC Backup\RestartExplorer.exe
  • %ProgramFiles%\MyPC Backup\Service Start.exe
  • %ProgramFiles%\MyPC Backup\Shared Stack.dll
  • %ProgramFiles%\MyPC Backup\Signup Wizard.exe
  • %ProgramFiles%\MyPC Backup\spf.dat
  • %ProgramFiles%\MyPC Backup\syncicon.ico
  • %ProgramFiles%\MyPC Backup\syncing.ico
  • %ProgramFiles%\MyPC Backup\tick.ico
  • %ProgramFiles%\MyPC Backup\uninst.exe
  • %ProgramFiles%\MyPC Backup\UnRegisterExtensions.exe
  • %ProgramFiles%\MyPC Backup\Updater.exe
  • %ProgramFiles%\MyPC Backup\x64\System.Data.SQLite.dll
  • %ProgramFiles%\MyPC Backup\x86\System.Data.SQLite.dll

The program then creates the following registry entries:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\MyPC Backup\"Default" = "%ProgramFiles%\MyPC Backup\BackupStack.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"DisplayName" = "MyPC Backup"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"UninstallString" = "%ProgramFiles%\MyPC Backup\uninst.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"DisplayIcon2 = "%ProgramFiles%\MyPC Backup\MyPC Backup.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"URLInfoAbout" = ""
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"Publisher" = "JDi Backup Ltd"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyPC Backup\"HelpLink" = ""

Next, the program creates a service with the following properties:
  • Display Name: Computer Backup (MyPC Backup)
  • Startup Type: Automatic

It then creates the following registry subkey to register itself as a service:

The program then asks the user to register for an account.

It then asks for user consent to backup files and folders on the computer.

The program regularly displays ads and popup notifications asking the user to pay for a premium version of the service.

You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan . If that does not resolve the problem you can try one of the options available below.

If you are a Norton product user, we recommend you try the following resources to remove this risk.

Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .

How to reduce the risk of infection
The following resources provide further information and best practices to help reduce the risk of infection.

If you are a Symantec business product user, we recommend you try the following resources to remove this risk.

Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.

Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .

How to reduce the risk of infection
The following resource provides further information and best practices to help reduce the risk of infection.
Protecting your business network

The following instructions pertain to all current Symantec antivirus products.

1. Performing a full system scan
How to run a full system scan using your Symantec product

2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.
Writeup By: Zhang Mingwei