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Removal instructions for BestCleaner

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What is BestCleaner?

The Malwarebytes research team has determined that BestCleaner is adware. These adware applications display advertisements not originating from the sites you are browsing.
This one is a member of the EoRezo family.

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

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


and this icon in you taskbar:


You may have seen this warning during install:


and this is the main screen of the program:


How did BestCleaner get on my computer?

Adware applications use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove BestCleaner?

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:
    Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
  • If an update is available, it will be implemented before the rest of the scanning procedure.
  • 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 BestCleaner?

  • No, Malwarebytes' Anti-Malware removes BestCleaner 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 adware.

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


Technical details for experts

Possible signs in FRST logs:

 HKLM-x32\...\Run: [BestCleaner] => C:\Program Files (x86)\BestCleaner\BestCleaner.exe [180736 2016-09-16] ()
 C:\Program Files (x86)\BestCleaner
 (WeMonetize ) C:\Users\{username}\Desktop\BestCleaner.exe

BestCleaner version 1.0 (HKLM-x32\...\BestCleaner_is1) (Version: 1.0 - WeMonetize)

Alterations made by the installer:

File system details [View: All details] (Selection)
    Adds the folder C:\Program Files (x86)\BestCleaner
       Adds the file BestCleaner.exe"="9/16/2016 2:22 PM, 180736 bytes, A
       Adds the file BestCleaner.exe.conf"="9/16/2016 2:22 PM, 1276 bytes, A
       Adds the file LinqBridge.dll"="9/16/2016 2:22 PM, 62976 bytes, A
       Adds the file unins000.dat"="11/14/2016 8:40 AM, 1329 bytes, A
       Adds the file unins000.exe"="11/14/2016 8:40 AM, 722597 bytes, A

Registry details [View: All details] (Selection)
       "BestCleaner"="REG_SZ", ""C:\Program Files (x86)\BestCleaner\BestCleaner.exe""
       "DisplayName"="REG_SZ", "BestCleaner version 1.0"
       "DisplayVersion"="REG_SZ", "1.0"
       "EstimatedSize"="REG_DWORD", 933
       "Inno Setup: App Path"="REG_SZ", "C:\Program Files (x86)\BestCleaner"
       "Inno Setup: Icon Group"="REG_SZ", "BestCleaner"
       "Inno Setup: Language"="REG_SZ", "english"
       "Inno Setup: Setup Version"="REG_SZ", "5.5.8 (a)"
       "Inno Setup: User"="REG_SZ", "{username}"
       "InstallDate"="REG_SZ", "20161114"
       "InstallLocation"="REG_SZ", "C:\Program Files (x86)\BestCleaner\"
       "MajorVersion"="REG_DWORD", 1
       "MinorVersion"="REG_DWORD", 0
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "WeMonetize"
       "QuietUninstallString"="REG_SZ", ""C:\Program Files (x86)\BestCleaner\unins000.exe" /SILENT"
       "UninstallString"="REG_SZ", ""C:\Program Files (x86)\BestCleaner\unins000.exe""

Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malware

Scan Date: 11/14/2016
Scan Time: 8:45 AM
Logfile: mbamBestCleaner.txt
Administrator: Yes

Malware Database: v2016.11.14.04
Rootkit Database: v2016.10.31.01
License: Premium
Malware Protection: Disabled
Malicious Website Protection: Enabled
Self-protection: Enabled

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

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 300492
Time Elapsed: 8 min, 42 sec

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

Processes: 1
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner\BestCleaner.exe, 3124, Delete-on-Reboot, [27053c84acee77bfa8f64886c63d748c]

Modules: 0
(No malicious items detected)

Registry Keys: 1
PUP.Optional.BestCleaner, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\BestCleaner_is1, Quarantined, [27053c84acee77bfa8f64886c63d748c], 

Registry Values: 2
PUP.Optional.BestCleaner, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|BestCleaner, "C:\Program Files (x86)\BestCleaner\BestCleaner.exe", Quarantined, [27053c84acee77bfa8f64886c63d748c]
PUP.Optional.BestCleaner, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\BESTCLEANER_IS1|Publisher, WeMonetize, Quarantined, [6dbf863aa5f560d670335d7151b2f50b]

Registry Data: 0
(No malicious items detected)

Folders: 1
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner, Delete-on-Reboot, [27053c84acee77bfa8f64886c63d748c], 

Files: 6
PUP.Optional.Tuto4PC, C:\Users\{username}\Desktop\BestCleaner.exe, Quarantined, [7cb0a51b702a71c51670646aab582fd1], 
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner\BestCleaner.exe.conf, Quarantined, [27053c84acee77bfa8f64886c63d748c], 
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner\BestCleaner.exe, Delete-on-Reboot, [27053c84acee77bfa8f64886c63d748c], 
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner\LinqBridge.dll, Delete-on-Reboot, [27053c84acee77bfa8f64886c63d748c], 
PUP.Optional.BestCleaner, C:\Program Files (x86)\BestCleaner\unins000.dat, Quarantined, [27053c84acee77bfa8f64886c63d748c], 
, C:\Program Files (x86)\BestCleaner\unins000.exe, Quarantined, [27053c84acee77bfa8f64886c63d748c], 

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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