Here are the results. As far as I can see, the problem is solved. I didn't do anything with my PC, though, as I'd rather wait until after I can activate Defender.
Peter
Zoek.exe v5.0.0.0 Updated 04-October-2014
Tool run by Peter on za 04-10-2014 at 16:29:43,08.
Microsoft Windows 8.1 6.3.9600 x64
Running in: Normal Mode Internet Access Detected
Launched: D:\Users\Peter\Downloads\zoek.exe [Scan all users] [Script inserted]
==== System Restore Info ======================
4-10-2014 16:30:13 Zoek.exe System Restore Point Created Succesfully.
==== Deleting CLSID Registry Keys ======================
==== Deleting CLSID Registry Values ======================
==== Deleting Services ======================
==== Batch Command(s) Run By Tool======================
==== Deleting Files \ Folders ======================
C:\PROGRA~2\FreeFileViewer deleted
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Search.lnk deleted
C:\Windows\tasks\FreeFileViewerUpdateChecker.job deleted
C:\windows\SysNative\tasks\FreeFileViewerUpdateChecker deleted
C:\windows\SysNative\tasks\GPUP deleted
C:\Users\Public\Desktop\YTD Video Downloader.lnk deleted
"C:\PROGRA~3\426ca54e67cf1a9e\{F04D4328-4631-1CBE-1907-201B33FAF2E8}.20140929170802" deleted
"C:\PROGRA~3\426ca54e67cf1a9e\{F04D4328-4631-1CBE-1907-201B33FAF2E8}.20140929175010" deleted
"C:\PROGRA~3\426ca54e67cf1a9e" deleted
==== Chromium Look ======================
ToinYWalllEt - Administrator\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Administrator\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Gast\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Gast\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Gast\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - HomeGroupUser$\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - HomeGroupUser$\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - HomeGroupUser$\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Lokaalaccount\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
Unblock Youku - Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Extensions\pdnfnkhpgegpcingjbfihlkjeighnddk
ToinYWalllEt - Lokaalaccount\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Peter\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Peter\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
ToinYWalllEt - Peter\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb
==== Chromium Fix ======================
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Local Storage\http_revo-uninstaller.nl.softonic.com_0.localstorage deleted successfully
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Local Storage\http_revo-uninstaller.nl.softonic.com_0.localstorage-journal deleted successfully
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Local Storage\http_
www.freedocumentsearch.com_0.localstorage deleted successfully
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Local Storage\http_
www.freedocumentsearch.com_0.localstorage-journal deleted successfully
C:\Users\Administrator\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Administrator\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Gast\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Gast\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Gast\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\HomeGroupUser$\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\HomeGroupUser$\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\HomeGroupUser$\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Lokaalaccount\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Peter\AppData\Local\Comodo\Dragon\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Peter\AppData\Local\Google\Chrome\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
C:\Users\Peter\AppData\Local\Google\Chrome SxS\User Data\Default\Extensions\jagfckpebfafacanceiomjicmbjejjfb deleted successfully
==== Set IE to Default ======================
Old Values:
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
"Start Page"="
http://www.google.nl/"
[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main]
"Search Page"="
http://www.google.com"
[HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Internet Explorer\Main]
"Search Page"="
http://www.google.com"
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes]
No DefaultScope Set For HKCU
New Values:
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
"Start Page"="
http://www.google.nl/"
[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main]
"Search Page"="
http://go.microsoft.com/fwlink/?LinkId=54896"
[HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Internet Explorer\Main]
"Search Page"="
http://go.microsoft.com/fwlink/?LinkId=54896"
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes]
"DefaultScope"="{012E1000-F331-11DB-8314-0800200C9A66}"
==== All HKCU SearchScopes ======================
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes
{012E1000-F331-11DB-8314-0800200C9A66} Google Url="
http://www.google.com/search?q={searchTerms}"
{0633EE93-D776-472f-A0FF-E1416B8B2E3A} Bing Url="
http://www.bing.com/search?q={searchTerms}&src=IE-SearchBox&FORM=IE8SRC"
{466F4CDD-6A97-4D78-9B5E-0626CC4D3594} Bing Url="
http://www.bing.com/search?q={searchTerms}&form=IE10TR&src=IE10TR&pc=LCJB"
==== Empty IE Cache ======================
C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5 emptied successfully
C:\Users\Lokaalaccount\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 emptied successfully
C:\Users\Lokaalaccount\AppData\Local\Microsoft\Windows\INetCache\Low\Content.IE5 emptied successfully
C:\Users\Peter\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 emptied successfully
C:\Users\Peter\AppData\Local\Microsoft\Windows\INetCache\Low\Content.IE5 emptied successfully
C:\Windows\SysNative\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 emptied successfully
C:\Windows\sysWoW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 emptied successfully
C:\Windows\sysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 emptied successfully
==== Empty FireFox Cache ======================
No FireFox Profiles found
==== Empty Chrome Cache ======================
C:\Users\Lokaalaccount\AppData\Local\Google\Chrome\User Data\Default\Cache emptied successfully
C:\Users\Peter\AppData\Local\Google\Chrome\User Data\Default\Cache emptied successfully
==== Empty All Flash Cache ======================
Flash Cache Emptied Successfully
==== Empty All Java Cache ======================
No Java Cache Found
==== C:\zoek_backup content ======================
C:\zoek_backup (files=206 folders=32 61173087 bytes)
==== Empty Temp Folders ======================
C:\Users\Default\AppData\Local\Temp emptied successfully
C:\Users\Default User\AppData\Local\Temp emptied successfully
C:\Users\Lokaalaccount\AppData\Local\Temp emptied successfully
C:\Users\Peter\AppData\Local\Temp will be emptied at reboot
C:\Windows\serviceprofiles\networkservice\AppData\Local\Temp will be emptied at reboot
C:\Windows\serviceprofiles\Localservice\AppData\Local\Temp emptied successfully
C:\Windows\Temp will be emptied at reboot
==== After Reboot ======================
==== Empty Temp Folders ======================
C:\Windows\Temp successfully emptied
C:\Users\Peter\AppData\Local\Temp successfully emptied
==== Empty Recycle Bin ======================
C:\$RECYCLE.BIN successfully emptied
==== Deleting Files / Folders ======================
"C:\Windows\serviceprofiles\networkservice\AppData\Local\Temp\MpCmdRun.log" not found
==== EOF on za 04-10-2014 at 16:37:00,46 ======================