Malware Removal Guides » April 3, 2017: Manual Removal Guide for PU.Cyboscan.PCOptimizer

Manual Removal Guide for PU.Cyboscan.PCOptimizer

The following instructions have been created to help you to get rid of "PU.Cyboscan.PCOptimizer" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

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Threat Details:

Categories:

  • pups

Description:

PU.Cyboscan.PCOptimizer scans the computer for errors and invalid registry entries in order to improve system stability. If the user wants to fix these entries he has to buy a license. After closing the main window of the free version a new window opens and remembers the user to get a license. This software license costs $ 99,95 (status: March 2017).

Links (be careful!):

: ttps://cyboscan.com/

Removal Instructions:

Files:

Please use Windows Explorer or another file manager of your choice to locate and delete these files.

  • The file at "<$COMMONDESKTOP>\PC Optimizer.lnk".
  • The file at "<$COMMONPROGRAMS>\Cyboscan PC Optimizer\PC Optimizer.lnk".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\license.rtf".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\PC Optimizer.exe".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\PC Optimizer.ico".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\PC Optimizer.InstallState".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\Updater.exe".
  • The file at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer\VTRegScan.dll".
  • The file at "<$WINDIR>\Installer\{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}\_6FEFF9B68218417F98F549.exe".
  • The file at "<$WINDIR>\Installer\{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}\_8D7C3D777F3E7BB6BBC735.exe".
  • The file at "<$WINDIR>\Installer\{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}\_949EC7BBCF891382AC28AF.exe".
  • The file at "<$WINDIR>\Installer\a498e.msi".

Make sure you set your file manager to display hidden and system files. If PU.Cyboscan.PCOptimizer uses rootkit technologies, use the rootkit scanner integrated into Spybot-S&D 2.x or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify files!

Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D to remove them.

Folders:

Please use Windows Explorer or another file manager of your choice to locate and delete these folders.

  • The directory at "<$COMMONPROGRAMS>\Cyboscan PC Optimizer".
  • The directory at "<$PROGRAMFILES>\Cyboscan\Cyboscan PC Optimizer".
  • The directory at "<$PROGRAMFILES>\Cyboscan".
  • The directory at "<$WINDIR>\Installer\{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}".

Make sure you set your file manager to display hidden and system files. If PU.Cyboscan.PCOptimizer uses rootkit technologies, use our RootAlyzer or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify folders!

Registry:

You can use regedit.exe (included in Windows) to locate and delete these registry entries.

  • Delete the registry key "{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}" at "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\".
  • Delete the registry key "10F4E5ED71D1F8E712DB6045008AE7EF" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "549A2B617982B9E1B0A892E49D6BDE00" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "5CC83AB6F93D12047929F23CF8937A68" at "HKEY_CLASSES_ROOT\Installer\UpgradeCodes\".
  • Delete the registry key "5CC83AB6F93D12047929F23CF8937A68" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\".
  • Delete the registry key "6CCAB6A568EFA17284909C18A13ED69F" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "7C17218E0F5642CB10A14725AE85547B" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "AEFEF55E605FCD747AE6F967866D5E9C" at "HKEY_CLASSES_ROOT\Installer\Features\".
  • Delete the registry key "AEFEF55E605FCD747AE6F967866D5E9C" at "HKEY_CLASSES_ROOT\Installer\Products\".
  • Delete the registry key "AEFEF55E605FCD747AE6F967866D5E9C" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "AEFEF55E605FCD747AE6F967866D5E9C" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\".
  • Delete the registry key "BA941F89E8AF1D036EEE74DD14707C13" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry key "C:|Program Files|Cyboscan|Cyboscan PC Optimizer|PC Optimizer.exe" at "HKEY_CLASSES_ROOT\Installer\Assemblies\".
  • Delete the registry key "C:|Program Files|Cyboscan|Cyboscan PC Optimizer|Updater.exe" at "HKEY_CLASSES_ROOT\Installer\Assemblies\".
  • Delete the registry key "C:|Program Files|Cyboscan|Cyboscan PC Optimizer|VTRegScan.dll" at "HKEY_CLASSES_ROOT\Installer\Assemblies\".
  • Delete the registry key "Cyboscan" at "HKEY_LOCAL_MACHINE\SOFTWARE\".
  • Delete the registry key "DAF11B3E40B0D6F93FBD122C9A616914" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\".
  • Delete the registry value "C:\Documents and Settings\All Users\Start Menu\Programs\Cyboscan PC Optimizer\" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\".
  • Delete the registry value "C:\Program Files\Cyboscan\" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\".
  • Delete the registry value "C:\Program Files\Cyboscan\Cyboscan PC Optimizer\" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\".
  • Delete the registry value "C:\WINDOWS\Installer\{E55FEFEA-F506-47DC-A76E-9F7668D6E5C9}\" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\".

If PU.Cyboscan.PCOptimizer uses rootkit technologies, use our RegAlyzer, RootAlyzer or our Total Commander anti-rootkit plugins.

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,

  1. Please read these instructions before requesting assistance,
  2. Then start your own thread in the Malware Removal Forum where a volunteer analyst will advise you as soon as available.
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