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Removal instructions for ArcadeYum

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Content is republished with permission from Malwarebytes.

What is ArcadeYum?

The Malwarebytes research team has determined that ArcadeYum 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 ArcadeYum?

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


and these warnings during install:



and these browser add-ons:




How did ArcadeYum get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was offered to play online games.


How do I remove ArcadeYum?

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 ArcadeYum?
  • No, Malwarebytes' Anti-Malware removes ArcadeYum 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 ArcadeYum 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: ArcadeYum Addon - {A0A838EC-FAAC-4F46-B3BA-D998593DB00E} - C:\Program Files (x86)\ArcadeYum\arcadeyum.dll
Possible signs in FRST logs:

 BHO-x32: ArcadeYum Addon -> {A0A838EC-FAAC-4F46-B3BA-D998593DB00E} -> C:\Program Files (x86)\ArcadeYum\arcadeyum.dll [2013-07-09] ()
 FF HKCU\...\Firefox\Extensions: [[email protected]] - C:\Program Files (x86)\ArcadeYum\arcadeyum.xpi
 FF Extension: ArcadeYum Addon - C:\Program Files (x86)\ArcadeYum\arcadeyum.xpi [2013-07-09]
 CHR HKLM-x32\...\Chrome\Extension: [fnpmjcajaomjmafnkipkbgicgmjfacao] - C:\Program Files (x86)\ArcadeYum\arcadeyum.crx [2013-07-09]
 C:\Program Files (x86)\ArcadeYum
 C:\ProgramData\Microsoft\Windows\Start Menu\Programs\ArcadeYum

ArcadeYum (HKLM-x32\...\ArcadeYum) (Version: 1.0.0 - ArcadeYum)
Alterations made by the installer:

File system details [View: All details] (Selection)
    Adds the folder C:\Program Files (x86)\ArcadeYum
       Adds the file arcadeyum.crx"="09/07/2013 15:38, 1811 bytes, A
       Adds the file arcadeyum.dll"="09/07/2013 15:38, 86528 bytes, A
       Adds the file arcadeyum.ico"="08/10/2013 11:37, 17542 bytes, A
       Adds the file arcadeyum.xpi"="09/07/2013 15:38, 2639 bytes, A
       Adds the file uninstall.exe"="10/07/2015 10:39, 67216 bytes, A
    Adds the folder C:\ProgramData\Microsoft\Windows\Start Menu\Programs\ArcadeYum
       Adds the file Play ArcadeYum.lnk"="10/07/2015 10:39, 1154 bytes, A
       Adds the file Uninstall ArcadeYum.lnk"="10/07/2015 10:39, 1037 bytes, A

Registry details [View: All details] (Selection)
       "(Default)"="REG_SZ", "ArcadeYum Addon"
       "(Default)"="REG_SZ", "C:\Program Files (x86)\ArcadeYum\arcadeyum.dll"
       "ThreadingModel"="REG_SZ", "Apartment"
       "Path"="REG_SZ", "C:\Program Files (x86)\ArcadeYum\arcadeyum.crx"
       "Version"="REG_SZ", "1.0.0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}]
       "(Default)"="REG_SZ", "ArcadeYum Addon"
       "NoExplorer"="REG_DWORD", 1
       "DisplayIcon"="REG_SZ", ""C:\Program Files (x86)\ArcadeYum\uninstall.exe""
       "DisplayName"="REG_SZ", "ArcadeYum"
       "DisplayVersion"="REG_SZ", "1.0.0"
       "HelpLink"="REG_SZ", "http://www.arcadeyum.com"
       "Publisher"="REG_SZ", "ArcadeYum"
       "SupportLink"="REG_SZ", "http://www.arcadeyum.com"
       "UninstallString"="REG_SZ", ""C:\Program Files (x86)\ArcadeYum\uninstall.exe""
       "[email protected]"="REG_SZ", "C:\Program Files (x86)\ArcadeYum\arcadeyum.xpi"

Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malware

Scan Date: 10/07/2015
Scan Time: 10:51
Logfile: mbamArcadeYum.txt
Administrator: Yes

Malware Database: v2015.07.10.02
Rootkit Database: v2015.07.09.01
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: 325359
Time Elapsed: 4 min, 4 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: 7
PUP.Optional.ArcadeYum.C, HKLM\SOFTWARE\WOW6432NODE\CLASSES\CLSID\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKLM\SOFTWARE\CLASSES\WOW6432NODE\CLSID\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\SETTINGS\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\STATS\{A0A838EC-FAAC-4F46-B3BA-D998593DB00E}, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\ArcadeYum, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, HKLM\SOFTWARE\WOW6432NODE\GOOGLE\CHROME\EXTENSIONS\fnpmjcajaomjmafnkipkbgicgmjfacao, Quarantined, [8694756bd2b80b2bb0de8879a45f946c], 

Registry Values: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Folders: 1
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 

Files: 5
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum\arcadeyum.xpi, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum\arcadeyum.crx, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum\arcadeyum.dll, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum\arcadeyum.ico, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 
PUP.Optional.ArcadeYum.C, C:\Program Files (x86)\ArcadeYum\uninstall.exe, Quarantined, [3fdbedf36822b680285fd42e1ee5fc04], 

Physical Sectors: 0
(No malicious items detected)

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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