Removal instructions for QuizScope

Content is republished with permission from Malwarebytes.

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:

this warning during install:

and this browser helper object:

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.

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\QuizScope

QuizScope (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, A


Registry 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-Malware
www.malwarebytes.org

Scan Date: 08/01/2016
Scan Time: 09:52
Logfile: mbamQuizScope.txt
Administrator: Yes

Version: 2.2.0.1020
Malware Database: v2016.01.08.02
Rootkit Database: v2016.01.05.01
License: Premium
Malware Protection: Disabled
Malicious Website Protection: Enabled
Self-protection: Disabled

OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {username}

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 314960
Time Elapsed: 4 min, 46 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 8
PUP.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: 1
PUP.Optional.ArcadeCandy, C:\Users\{username}\AppData\Local\QuizScope, Quarantined, [082a7dbaa6f3033364331da4f50d35cb], 

Files: 4
PUP.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.

#1
Metallica

Posted 08 January 2016 - 03:26 AM

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