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Removal instructions for QuizScope

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What is QuizScope?

The Malwarebytes research team has determined that QuizScope is a browser hijacker. These so-called "hijackers" manipulate your browser(s), for example to change your startpage or searchscopes, so that the affected browser visits their site or one of their choice. This one also displays advertisements.

How do I know if my computer is affected by QuizScope?

You may see this entry in your list of installed software:

warning4.png

this warning during install:

warning1.png

and this browser helper object:

warning2.png

How did QuizScope get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was offered as a horoscope portal.

How do I remove QuizScope?

Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted program.

  • Please download Malwarebytes Anti-Malware to your desktop.
  • Double-click mbam-setup-version.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to the following:
    • Enable free trial of Malwarebytes Anti-Malware Premium
    • Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • If an update is found, you will be prompted to download and install the latest version.
  • Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.
Is there anything else I need to do to get rid of QuizScope?
  • No, Malwarebytes' Anti-Malware removes QuizScope completely.
How would the full version of Malwarebytes Anti-Malware help protect me?

We hope our application and this guide have helped you eradicate this hijacker.

As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the QuizScope hijacker. It would have warned you before the application could install itself, giving you a chance to stop it before it became too late.

protection1.png

Technical details for experts

Signs in a HijackThis log:

O2 - BHO: QuizScope Horoscope - {D0405B37-CB13-4185-B08B-17CF898DD4C2} - C:\Users\{username}\AppData\Local\QuizScope\quiz.dll
Possible signs in FRST logs:

 BHO-x32: QuizScope Horoscope -> {D0405B37-CB13-4185-B08B-17CF898DD4C2} -> C:\Users\{username}\AppData\Local\QuizScope\quiz.dll [2015-09-30] (QuizScope) C:\Users\{username}\AppData\Local\QuizScopeQuizScope (HKCU\...\QuizScope) (Version: 1.0.0 - )
Alterations made by the installer:

File system details  ---------------------------------------------    Adds the folder C:\Users\{username}\AppData\Local\QuizScope       Adds the file quiz.dll"="30/09/2015 14:11, 414856 bytes, A       Adds the file quiz.exe"="30/09/2015 14:11, 183432 bytes, A       Adds the file unscope.exe"="30/09/2015 14:11, 96752 bytes, A    Adds the folder C:\Users\{username}\AppData\Roaming\Mozilla\Firefox\Profiles\{profile}.default\gmp-gmpopenh264\1.5.3       Adds the file gmpopenh264.dll"="18/12/2015 18:49, 720552 bytes, A       Adds the file gmpopenh264.info"="18/12/2015 17:59, 120 bytes, ARegistry details  ------------------------------------------    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D0405B37-CB13-4185-B08B-17CF898DD4C2}]       "(Default)"="REG_SZ", "QuizScope Horoscope"       "NoExplorer"="REG_DWORD", 1    [HKEY_CURRENT_USER\Software\AppDataLow\Software\A18B3D54EE814E9E9B466A8B0C3CC276]       "Ticket"="REG_SZ", "kLAY00gkQkC8ELaAdCBH"    [HKEY_CURRENT_USER\Software\Classes\QuizScope.Control]       "(Default)"="REG_SZ", "QuizScope"       "CurVer"="REG_SZ", "QuizScope.Control.1"       "Software\Classes\CLSID"="REG_SZ", "{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}"    [HKEY_CURRENT_USER\Software\Classes\QuizScope.Control.1]       "(Default)"="REG_SZ", "QuizScope"       "Software\Classes\CLSID"="REG_SZ", "{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}"    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}]       "(Default)"="REG_SZ", "QuizScope Control"       "ProgID"="REG_SZ", "QuizScope.Control.1"       "VersionIndependentProgID"="REG_SZ", "QuizScope.Control"    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\Implemented Categories\{40FC6ED3-2438-11CF-A3DB-080036F12502}]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\Implemented Categories\{59fb2056-d625-48d0-a944-1a85b5ab2640}]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\Implemented Categories\{7DD95801-9882-11CF-9FA9-00AA006C42C4}]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\Implemented Categories\{7DD95802-9882-11CF-9FA9-00AA006C42C4}]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\InProcServer32]       "(Default)"="REG_SZ", "C:\Users\{username}\AppData\Local\QuizScope\quiz.dll"       "ThreadingModel"="REG_SZ", "Apartment"    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{D0405B37-CB13-4185-B08B-17CF898DD4C2}]       "(Default)"="REG_SZ", "QuizScope Horoscope"    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{D0405B37-CB13-4185-B08B-17CF898DD4C2}\Implemented Categories]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{D0405B37-CB13-4185-B08B-17CF898DD4C2}\Implemented Categories\{59fb2056-d625-48d0-a944-1a85b5ab2640}]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{D0405B37-CB13-4185-B08B-17CF898DD4C2}\InProcServer32]       "(Default)"="REG_SZ", "C:\Users\{username}\AppData\Local\QuizScope\quiz.dll"       "ThreadingModel"="REG_SZ", "Apartment"    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{1E39BC1B-B502-4166-AD13-EDFD3A0E4975}]       "AppName"="REG_SZ", "quiz.exe"       "AppPath"="REG_SZ", "C:\Users\{username}\AppData\Local\QuizScope"       "Policy"="REG_DWORD", 3    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}\iexplore\AllowedDomains\*]       "(Default)"="REG_SZ", ""    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\QuizScope]       "DisplayIcon"="REG_SZ", ""C:\Users\{username}\AppData\Local\QuizScope\unscope.exe""       "DisplayName"="REG_SZ", "QuizScope"       "DisplayVersion"="REG_SZ", "1.0.0"       "HelpLink"="REG_SZ", "http://www.quizscope.com"       "SupportLink"="REG_SZ", "http://www.quizscope.com"       "UninstallString"="REG_SZ", ""C:\Users\{username}\AppData\Local\QuizScope\unscope.exe""
Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malwarewww.malwarebytes.orgScan Date: 08/01/2016Scan Time: 09:52Logfile: mbamQuizScope.txtAdministrator: YesVersion: 2.2.0.1020Malware Database: v2016.01.08.02Rootkit Database: v2016.01.05.01License: PremiumMalware Protection: DisabledMalicious Website Protection: EnabledSelf-protection: DisabledOS: Windows 7 Service Pack 1CPU: x64File System: NTFSUser: {username}Scan Type: Threat ScanResult: CompletedObjects Scanned: 314960Time Elapsed: 4 min, 46 secMemory: EnabledStartup: EnabledFilesystem: EnabledArchives: EnabledRootkits: EnabledHeuristics: EnabledPUP: EnabledPUM: EnabledProcesses: 0(No malicious items detected)Modules: 0(No malicious items detected)Registry Keys: 8PUP.Optional.ArcadeCandy, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\SETTINGS\{D0405B37-CB13-4185-B08B-17CF898DD4C2}, Quarantined, [56dccd6a3a5f2e08a5bcf88562a0fc04], PUP.Optional.ArcadeCandy, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{D0405B37-CB13-4185-B08B-17CF898DD4C2}, Quarantined, [56dccd6a3a5f2e08a5bcf88562a0fc04], PUP.Optional.ArcadeCandy, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\STATS\{D0405B37-CB13-4185-B08B-17CF898DD4C2}, Quarantined, [56dccd6a3a5f2e08a5bcf88562a0fc04], PUP.Optional.ArcadeCandy, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\STATS\{0857D3B0-D1A2-4CD0-A71F-029C571ADCAD}, Quarantined, [76bca691356475c18ad6f786857d8d73], PUP.Optional.ArcadeCandy, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\QuizScope, Quarantined, [51e145f2e5b43105b2c0389530d10000], PUP.Optional.ArcadeCandy, HKCU\SOFTWARE\MICROSOFT\INTERNET EXPLORER\LOW RIGHTS\ELEVATIONPOLICY\{1E39BC1B-B502-4166-AD13-EDFD3A0E4975}, Quarantined, [e44ecd6aabeefe383318e63e6e96758b], PUP.Optional.ArcadeCandy, HKCU\Software\Classes\QuizScope.Control, Quarantined, [b47e66d1d6c3c5713d0ddc4829db07f9], PUP.Optional.ArcadeCandy, HKCU\Software\Classes\QuizScope.Control.1, Quarantined, [60d2d661e5b43cfa6ddd2004ca3ae719], Registry Values: 0(No malicious items detected)Registry Data: 0(No malicious items detected)Folders: 1PUP.Optional.ArcadeCandy, C:\Users\{username}\AppData\Local\QuizScope, Quarantined, [082a7dbaa6f3033364331da4f50d35cb], Files: 4PUP.Optional.ArcadeCandy, C:\Users\{username}\Desktop\QuizScope.exe, Quarantined, [b57d20173b5e122490e2b7167889d22e], PUP.Optional.ArcadeCandy, C:\Users\{username}\AppData\Local\QuizScope\quiz.dll, Quarantined, [a58d0e29732676c0472cc80523de649c], PUP.Optional.ArcadeCandy, C:\Users\{username}\AppData\Local\QuizScope\quiz.exe, Quarantined, [042e55e22574fc3a92e1725b3ac73fc1], PUP.Optional.ArcadeCandy, C:\Users\{username}\AppData\Local\QuizScope\unscope.exe, Quarantined, [51e145f2e5b43105b2c0389530d10000], Physical Sectors: 0(No malicious items detected)(end)
As mentioned before the full version of Malwarebytes Anti-Malware could have protected your computer against this threat.

We use different ways of protecting your computer(s):

  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention
Save yourself the hassle and get protected.

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