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24 June 2015
Infection Length:
Pinery Limited
Risk Impact:
Systems Affected:


PUA.ImproveSpeedPC is a misleading application that displays exaggerated information about items that it claims are slowing down the computer. It then asks the user to pay to fix the issues.

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

Antivirus Protection Dates

  • Initial Rapid Release version 01 April 2015 revision 002
  • Latest Rapid Release version 22 September 2016 revision 024
  • Initial Daily Certified version 01 April 2015 revision 018
  • Latest Daily Certified version 22 September 2016 revision 025
  • Initial Weekly Certified release date 01 April 2015
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
The program must be manually installed.

When the program is installed, it creates the following files:
  • %ProgramFiles%\ImproveSpeedPC\botan.dll
  • %ProgramFiles%\ImproveSpeedPC\chartdir.lic
  • %ProgramFiles%\ImproveSpeedPC\chartdir51.dll
  • %ProgramFiles%\ImproveSpeedPC\ImproveSpeedPC.exe
  • %ProgramFiles%\ImproveSpeedPC\msvcp100.dll
  • %ProgramFiles%\ImproveSpeedPC\msvcr100.dll
  • %ProgramFiles%\ImproveSpeedPC\
  • %ProgramFiles%\ImproveSpeedPC\processes.db
  • %ProgramFiles%\ImproveSpeedPC\rw.log
  • %ProgramFiles%\ImproveSpeedPC\sqlite3.dll
  • %ProgramFiles%\ImproveSpeedPC\uninst.exe
  • %SystemDrive%\ProgramData\Microsoft\Windows\Start Menu\Programs\ImproveSpeedPC\ImproveSpeedPC.lnk
  • %SystemDrive%\ProgramData\Microsoft\Windows\Start Menu\Programs\ImproveSpeedPC\Uninstall.lnk

Next, the program creates the following registry entries:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\"ImproveSpeedPC.exe" = "%ProgramFiles%\ImproveSpeedPC\ImproveSpeedPC.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\"ImproveSpeedPC.job" = "[HEXADECIMAL DATA]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures\"ImproveSpeedPC.job.fp" = "B868EC35"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{F7E4087C-B204-4642-960A-EB568FAD3114}\"Path" = "\ImproveSpeedPC"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{F7E4087C-B204-4642-960A-EB568FAD3114}\"Hash" = "[HEXADECIMAL DATA]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{F7E4087C-B204-4642-960A-EB568FAD3114}\"Triggers" = "[HEXADECIMAL DATA]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{F7E4087C-B204-4642-960A-EB568FAD3114}\"DynamicInfo" = "[HEXADECIMAL DATA]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\ImproveSpeedPC\"Id" = "{F7E4087C-B204-4642-960A-EB568FAD3114}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\ImproveSpeedPC\"Index" = "3"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\"ImproveSpeedPC" = "%ProgramFiles%\ImproveSpeedPC\ImproveSpeedPC.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"DisplayName" = "ImproveSpeedPC"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"UninstallString" = "%ProgramFiles%\ImproveSpeedPC\uninst.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"DisplayIcon" "%ProgramFiles%\ImproveSpeedPC\ImproveSpeedPC.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"DisplayVersion" = "1.0"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"URLInfoAbout" = ""
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"URLRegistration" = ""
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ImproveSpeedPC\"Publisher" = "ImproveSpeedPC"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\App Paths\"ImproveSpeedPC.exe\" = "%ProgramFiles%\ImproveSpeedPC\ImproveSpeedPC.exe"

The program bundles third-party application and makes it unclear how to opt out of installing these applications.

The program then scans for particular items on the computer and claims that the performance of the computer will improve if these issues are resolved. It gives misleading information about the effects that these items have on the computer. It then asks the user to pay in order to fix these issues.
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.