Exploit Perfhost.com


Exploit Perfhost.com is the detection name for some of the software components that were installed without user consent as documented in the perfhost.com video.


Install without user consent


apisvc.exe, WorldAntiSpy.exe

If you have any of the files related to Exploit Perfhost.com on your system, please send them for additional analysis. Generally, I have only analysed a few versions for each software component listed at this web site. With your help I will be able to look at both old and more recent versions of the Exploit Perfhost.com software. Thank you very much for your time!



End User License Agreement



Bazooka Adware and Spyware Scanner detects Exploit Perfhost.com. Bazooka is freeware and detects spyware, adware, foistware, trojan horses, viruses, worms and other potentially unwanted applications. Read more »

Uninstall procedure

Uninstall Exploit Perfhost.com from "Add/Remove Programs" in the Windows® Control Panel. Look for entries called "PremiumSearch" and "World AntiSpy".

Uninstall Exploit Perfhost.com with FreeFixer

I'm working on a general purpose tool for removing unwanted software. The tool is called FreeFixer and can help you remove unwanted Browser Helper Objects, Internet Explorer toolbars and software that starts automatically when you reboot your computer, so it can offer some assistance while uninstalling Exploit Perfhost.com. The manual removal instructions listed below will help you to identify what to delete with FreeFixer.

Read more about FreeFixer.

Manual removal

Please follow the instructions below if you would like to remove Exploit Perfhost.com manually. Please notice that you must follow the instructions very carefully and delete everything that is mentioned. In most cases the removal will fail if one single item is not deleted. If Exploit Perfhost.com remains on your system after stepping through the removal instructions, please double-check by stepping through them again.

  1. Start your computer in safe mode.
  2. Start the registry editor. This is done by clicking Start then Run. (The Run dialog will appear.) Type regedit and click OK. (The registry editor will open.)
  3. Delete 'HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ CLSID \ {4FA2B39B-A7DA-983C-68E6-5B095A4118FD}', if it exists.
  4. Delete 'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Browser Helper Objects \ {4FA2B39B-A7DA-983C-68E6-5B095A4118FD}', if it exists.
  5. Browse to the key:
    'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run'
  6. In the right pane, delete the value called 'apisvc.exe', if they exists.
  7. Exit the registry editor.
  8. Start Windows Explorer and delete:
    Note: %ProgramsDir% is a variable (?). By default, this is C:\Program Files.
    Note: %SystemDir% is a variable (?). By default, this is C:\Windows\System (Windows 95/98/Me), C:\WINNT\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
  9. Start Microsoft Internet Explorer.
  10. In Internet Explorer, click Tools -> Internet Options.
  11. Click the Programs tab -> Reset Web Settings.

Problems uninstalling? Click here.

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Contact information for Exploit Perfhost.com's vendor

In order to provide correct, accurate and updated information about Exploit Perfhost.com I encourage the vendor to contact me if any part of this write-up needs a revision.

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Related links

Bazooka - Free scan for spyware, adware, trojan horses, keyloggers, etc. Detects more than 500 potentially unwanted applications. Freeware!

The File Database - Search the file database for more information. Free!

PopUp Blocker Test - Find out if your pop-up killer can handle all pop-ups. Free!

Kephyr Labs - Find out what is going on at Kephyr. Try products in an early stage of development.

Read more about FreeFixer, Kephyr's latest spyware removal tool.
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