Modified by: Jay Garcia
ALIASES:

PUA.MyPCBackup, PUA.MyPCBackup!gen1 (Symantec)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 10,363,168 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 05 Nov 2019

Arrival Details

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Potentially Unwanted Application creates the following folders:

  • %Program Files%\MyPC Backup\x64
  • %Program Files%\MyPC Backup\x86
  • %Start Menu%\Programs\MyPC Backup
  • %Program Files%\MyPC Backup\log
  • %Program Files%\MyPC Backup
  • %Program Files%\MyPC Backup\Database

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Autostart Technique

This Potentially Unwanted Application registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BackupStack
ImagePath = "%Program Files%\MyPC Backup\BackupStack.exe"

It drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:

  • %User Startup%\MyPC Backup.lnk

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).)

Other System Modifications

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
MyPC Backup

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
MyPC Backup

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\App Paths\
MyPC Backup
(Default) = "%Program Files%\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 = "%Program Files%\MyPC Backup\uninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MyPC Backup
DisplayIcon = "%Program Files%\MyPC Backup\MyPC Backup.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MyPC Backup
DisplayVersion = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MyPC Backup
URLInfoAbout = "http://www.{BLOCKED}ckup.com"

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 = "http://support.{BLOCKED}ckup.com"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BackupStack
DisplayName = "Computer Backup (MyPC Backup)"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BackupStack
Start = "SERVICE_AUTO_START"

Dropping Routine

This Potentially Unwanted Application drops the following files:

  • %Program Files%\MyPC Backup\Service Start.exe
  • %Program Files%\MyPC Backup\es_ES.mo
  • %Program Files%\MyPC Backup\GetText.dll337.old
  • %Program Files%\MyPC Backup\AlphaVSS.52.x64.dll
  • %Program Files%\MyPC Backup\Database\mpcb_queues.db
  • %Program Files%\MyPC Backup\Database\mpcb_sig_cache.db
  • %Start Menu%\Programs\MyPC Backup\Uninstall.lnk
  • %Program Files%\MyPC Backup\mypcbackup.ico
  • %Program Files%\MyPC Backup\x86\System.Data.SQLite.dll337.old
  • %Program Files%\MyPC Backup\RegisterExtensionDotNet20_x86.exe
  • %Program Files%\MyPC Backup\MPCBIconOverlays.dll337.old
  • %Program Files%\MyPC Backup\RestartExplorer.exe
  • %Program Files%\MyPC Backup\x86\System.Data.SQLite.Linq.dll337.old
  • %Program Files%\MyPC Backup\log\APPLICATION.log
  • %Program Files%\MyPC Backup\AWSSDK.dll
  • %Program Files%\MyPC Backup\Shared Stack.dll337.old
  • %Program Files%\MyPC Backup\ObjectListView.dll
  • %Program Files%\MyPC Backup\GetText.dll
  • %Program Files%\MyPC Backup\AlphaVSS.60.x64.dll
  • %Program Files%\MyPC Backup\tick.ico
  • %Desktop%\MyPC Backup.lnk
  • %Program Files%\MyPC Backup\UnRegisterExtensions.exe337.old
  • %Program Files%\MyPC Backup\MPCBClient.dll337.old
  • %Program Files%\MyPC Backup\AlphaVSS.Common.dll
  • %Program Files%\MyPC Backup\it_IT.mo
  • %Start Menu%\Programs\MyPC Backup\MyPC Backup.lnk
  • %Program Files%\MyPC Backup\Database\mpcb_file_cache.db
  • %Program Files%\MyPC Backup\LogicNP.EZShellExtensions.dll337.old
  • %Program Files%\MyPC Backup\MyPC Backup.exe
  • %Program Files%\MyPC Backup\MPCBClient.dll
  • %Program Files%\MyPC Backup\Updater.exe337.old
  • %Program Files%\MyPC Backup\ObjectListView.dll337.old
  • %Program Files%\MyPC Backup\AlphaVSS.60.x86.dll
  • %Program Files%\MyPC Backup\x86\System.Data.SQLite.dll
  • %Program Files%\MyPC Backup\Crypto32.dll
  • %Program Files%\MyPC Backup\RegisterExtensionDotNet20_x64.exe
  • %Program Files%\MyPC Backup\MPCBContextMenu.dll
  • %Program Files%\MyPC Backup\Database\mpcb_settings.db
  • %Program Files%\MyPC Backup\Signup Wizard.exe337.old
  • %Program Files%\MyPC Backup\AlphaVSS.52.x86.dll
  • %Program Files%\MyPC Backup\Database\mpcb_backup_conf.db
  • %Program Files%\MyPC Backup\Signup Wizard.exe
  • %Program Files%\MyPC Backup\AWSSDK.dll337.old
  • %Program Files%\MyPC Backup\syncicon.ico
  • %Program Files%\MyPC Backup\uninst.exe
  • %Program Files%\MyPC Backup\AlphaVSS.51.x86.dll
  • %Program Files%\MyPC Backup\de_DE.mo
  • %Program Files%\MyPC Backup\UnRegisterExtensions.exe
  • %Program Files%\MyPC Backup\MPCBContextMenu.dll337.old
  • %Program Files%\MyPC Backup\MyPC Backup.exe337.old
  • %Program Files%\MyPC Backup\BackupStack.exe337.old
  • %Program Files%\MyPC Backup\x64\System.Data.SQLite.dll337.old
  • %Program Files%\MyPC Backup\BackupStack.exe
  • %Program Files%\MyPC Backup\fr_FR.mo
  • %Program Files%\MyPC Backup\LogicNP.EZShellExtensions.dll
  • %Program Files%\MyPC Backup\Updater.exe
  • %Program Files%\MyPC Backup\MPCBIconOverlays.dll
  • %Program Files%\MyPC Backup\Configuration Updater.exe
  • %Program Files%\MyPC Backup\Crypto64.dll
  • %Program Files%\MyPC Backup\pt_PT.mo
  • %Program Files%\MyPC Backup\x64\System.Data.SQLite.Linq.dll337.old
  • %Program Files%\MyPC Backup\Shared Stack.dll
  • %Program Files%\MyPC Backup\syncing.ico
  • %Program Files%\MyPC Backup\diffstack.dll
  • %Program Files%\MyPC Backup\x64\System.Data.SQLite.dll

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

  • http://track.{BLOCKED}ckup.com/aadebc4830c51c2794a960fe5a9e11df.php

  SOLUTION

Minimum Scan Engine: 9.850
SSAPI PATTERN File: 2.231.00
SSAPI PATTERN Date: 07 Nov 2019

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Remove PUA.Win32.MyPCBackUp.D by using its own Uninstall option

[ Learn More ]
To uninstall the grayware process

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as PUA.Win32.MyPCBackUp.D. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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