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What is Windows Clear?

The Malwarebytes research team has determined that Windows Clear is a "system optimizer". These so-called "system optimizers" use intentional false positives to convince users that their systems have problems. Then they try to sell you their software, claiming it will remove these problems.
More information can be found on our Malwarebytes Labs blog.

How do I know if I am infected with Windows Clear?

This is how the main screen of the system optimizer looks:

main.png

You will find these icons in your taskbar, your startmenu, and on your desktop:

icons.png

and see these warnings during install:

warning1.png

warning2.png

and these screens during "operations":

warning5.png

warning6.png

warning7.png

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

warning4.png

How did Windows Clear get on my computer?

These so-called system optimizers use different methods of getting installed. This particular one was downloaded from their website:

website.png

How do I remove Windows Clear?

Our program Malwarebytes can detect and remove this potentially unwanted application.

  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions 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 Windows Clear?

  • No, Malwarebytes removes Windows Clear completely.
  • The ophaned entry in your Windows Startmenu can de deleted.

How would the full version of Malwarebytes help protect me?

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

As you can see below the full version of Malwarebytes would have protected you against the Windows Clear installer. 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

You may see these entries in FRST logs:
 

(WeiSiTianYu Software Develop Service Center -> Miracle Technologies) C:\Program Files (x86)\WindowsClear\WindowsClear.exe
C:\Windows\Tasks\WindowsClear_Home.Job
C:\Program Files (x86)\WindowsClear
C:\Users\{username}\Desktop\WindowsClear.lnk
C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\WindowsClear
(Weskysoft Inc. ) C:\Users\{username}\Desktop\WindowsClear.exe

WindowsClear 5.2 (HKLM-x32\...\{8F0304C1-06BC-41B9-82E0-E46F425221EF}_is1) (Version:  - Weskysoft Inc.)

Alterations made by the installer:
 

File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Program Files (x86)\WindowsClear
       Adds the file aamd532.dll"="1/11/2011 3:14 PM, 10752 bytes, A
       Adds the file ActiveX.dat"="1/11/2011 3:14 PM, 69294 bytes, A
       Adds the file Apps.dat"="1/11/2011 3:14 PM, 15448 bytes, A
       Adds the file Components.dat"="1/11/2011 3:14 PM, 1279 bytes, A
       Adds the file Config.db"="3/1/2019 8:54 AM, 58368 bytes, A
       Adds the file FreeUse.dll"="1/11/2011 3:14 PM, 246272 bytes, A
       Adds the file InstallDll.dll"="1/11/2011 3:14 PM, 32768 bytes, A
       Adds the file License.dll"="1/11/2011 3:14 PM, 99328 bytes, A
       Adds the file MiracleLib.dll"="1/11/2011 3:14 PM, 311296 bytes, A
       Adds the file PerfectOptimizer.ini"="3/1/2019 8:55 AM, 729 bytes, A
       Adds the file SEClean.DLL"="1/11/2011 3:14 PM, 139264 bytes, A
       Adds the file SERes.DLL"="1/11/2011 3:14 PM, 4473344 bytes, A
       Adds the file sqlite3.dll"="1/11/2011 3:14 PM, 504293 bytes, A
       Adds the file unins000.dat"="3/1/2019 8:53 AM, 7321 bytes, A
       Adds the file unins000.exe"="3/1/2019 8:53 AM, 703770 bytes, A
       Adds the file Update.exe"="1/11/2011 3:14 PM, 1042944 bytes, A
       Adds the file website.url"="1/11/2011 3:14 PM, 232 bytes, A
       Adds the file WindowsClear.exe"="1/11/2011 3:15 PM, 6329016 bytes, A
       Adds the file WinUpdate.exe"="1/11/2011 3:14 PM, 1330688 bytes, A
    Adds the folder C:\Program Files (x86)\WindowsClear\Backup\Application
    Adds the folder C:\Program Files (x86)\WindowsClear\Backup\Registry\FirstBackup
    Adds the folder C:\Program Files (x86)\WindowsClear\Backup\Registry\FullBackup
    Adds the folder C:\Program Files (x86)\WindowsClear\Backup\Service
    Adds the folder C:\Program Files (x86)\WindowsClear\config
       Adds the file about.bmp"="1/11/2011 3:14 PM, 154544 bytes, A
       Adds the file head.bmp"="1/11/2011 3:14 PM, 149556 bytes, A
       Adds the file Left.jpg"="1/11/2011 3:14 PM, 26938 bytes, A
       Adds the file Lng2Const.xml"="1/11/2011 3:14 PM, 170704 bytes, A
       Adds the file logo.ico"="1/11/2011 3:14 PM, 4286 bytes, A
       Adds the file logo11.ico"="1/11/2011 3:14 PM, 4286 bytes, A
       Adds the file Logo64.ico"="1/11/2011 3:14 PM, 16958 bytes, A
       Adds the file Menu.xml"="1/11/2011 3:14 PM, 7159 bytes, A
       Adds the file PerfectOptimzer.chm"="1/11/2011 3:14 PM, 0 bytes, A
       Adds the file register.jpg"="1/11/2011 3:14 PM, 31410 bytes, A
       Adds the file SmallLogo.bmp"="1/11/2011 3:14 PM, 3128 bytes, A
       Adds the file splash.jpg"="1/11/2011 3:14 PM, 94752 bytes, A
       Adds the file Thumbs.db"="1/11/2011 3:14 PM, 31744 bytes, A
       Adds the file website.url"="1/11/2011 3:14 PM, 232 bytes, A
    Adds the folder C:\Program Files (x86)\WindowsClear\Data\Service
       Adds the file campus_model.bat"="1/11/2011 3:14 PM, 2217 bytes, A
       Adds the file default_model.bat"="1/11/2011 3:14 PM, 2192 bytes, A
       Adds the file home_model.bat"="1/11/2011 3:14 PM, 2202 bytes, A
       Adds the file interner_model.bat"="1/11/2011 3:14 PM, 2255 bytes, A
       Adds the file notebook_model.bat"="1/11/2011 3:14 PM, 2215 bytes, A
       Adds the file office_model.bat"="1/11/2011 3:14 PM, 2252 bytes, A
    Adds the folder C:\Program Files (x86)\WindowsClear\Temp
    Adds the folder C:\Program Files (x86)\WindowsClear\Update
    Adds the folder C:\Users\{username}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\WindowsClear
       Adds the file Uninstall.lnk"="3/1/2019 8:53 AM, 1965 bytes, A
       Adds the file Website.lnk"="3/1/2019 8:53 AM, 1064 bytes, A
       Adds the file WindowsClear.lnk"="3/1/2019 8:53 AM, 1985 bytes, A
    In the existing folder C:\Users\{username}\Desktop
       Adds the file WindowsClear.lnk"="3/1/2019 8:53 AM, 1055 bytes, A
    In the existing folder C:\Windows\Tasks
       Adds the file WindowsClear_Home.Job"="3/1/2019 8:54 AM, 364 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\pofile]
       "(Default)"="REG_SZ", "WindowsClear License"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\pofile\DefaultIcon]
       "(Default)"="REG_SZ", "C:\Program Files (x86)\WindowsClear\WindowsClear.exe"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\pofile\Shell\Open\Command]
       "(Default)"="REG_SZ", "C:\Program Files (x86)\WindowsClear\WindowsClear.exe "%1""
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{8F0304C1-06BC-41B9-82E0-E46F425221EF}_is1]
       "DisplayName"="REG_SZ", "WindowsClear 5.2"
       "HelpLink"="REG_SZ", "http://www.WindowsClear.com"
       "Inno Setup: App Path"="REG_SZ", "C:\Program Files (x86)\WindowsClear"
       "Inno Setup: Deselected Tasks"="REG_SZ", "quicklaunchicon"
       "Inno Setup: Icon Group"="REG_SZ", "WindowsClear"
       "Inno Setup: Selected Tasks"="REG_SZ", "desktopicon"
       "Inno Setup: Setup Version"="REG_SZ", "5.3.4 (a)"
       "Inno Setup: User"="REG_SZ", "{username}"
       "InstallDate"="REG_SZ", "20190301"
       "InstallLocation"="REG_SZ", "C:\Program Files (x86)\WindowsClear\"
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "Weskysoft Inc."
       "QuietUninstallString"="REG_SZ", ""C:\Program Files (x86)\WindowsClear\unins000.exe" /SILENT"
       "UninstallString"="REG_SZ", ""C:\Program Files (x86)\WindowsClear\unins000.exe""
       "URLInfoAbout"="REG_SZ", "http://www.WindowsClear.com"
       "URLUpdateInfo"="REG_SZ", "http://www.WindowsClear.com"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\Perfect Optimizer\5.2\EvidenceCleaner]
       "Errors"="REG_SZ", "15"
       "LastScanDate"="REG_SZ", "Friday March 1, 2019 - 08:55 AM"
       "LastScanTime"="REG_SZ", "2019-03-01 8:55:15 AM"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\Perfect Optimizer\5.2\JunkFileCleaner]
       "FullScan"="REG_SZ", "1"
       "LastScanDate"="REG_SZ", "Friday March 1, 2019 - 08:55 AM"
       "LastScanTime"="REG_SZ", "2019-03-01 8:55:15 AM"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\Perfect Optimizer\5.2\RegistryCleaner]
       "Errors"="REG_SZ", "448"
       "FullScan"="REG_SZ", "1"
       "LastScanDate"="REG_SZ", "Friday March 1, 2019 - 08:55 AM"
       "LastScanTime"="REG_SZ", "2019-03-01 8:55:15 AM"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\PerfectOptimizer]
       "ProductID"="REG_SZ", "WS001"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\PerfectOptimizer\5.2.6]
       "ImagePath"="REG_SZ", "C:\Program Files (x86)\WindowsClear\WindowsClear.exe"
       "Registered"="REG_SZ", "0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Weskysoft\PerfectOptimizer\6.0]
       "Registered"="REG_SZ", "0"

Malwarebytes log:
 

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 3/1/19
Scan Time: 9:07 AM
Log File: 1538ef70-3bf9-11e9-b7e2-00ffdcc6fdfc.json

-Software Information-
Version: 3.7.1.2839
Components Version: 1.0.538
Update Package Version: 1.0.9492
License: Premium

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

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 236161
Threats Detected: 65
Threats Quarantined: 65
Time Elapsed: 5 min, 41 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 1
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\WindowsClear.exe, Quarantined, [3223], [646009],1.0.9492

Module: 5
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\InstallDll.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\MiracleLib.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\SEClean.DLL, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\sqlite3.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\WindowsClear.exe, Quarantined, [3223], [646009],1.0.9492

Registry Key: 5
PUP.Optional.PerfectOptimizer, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\{8F0304C1-06BC-41B9-82E0-E46F425221EF}_is1, Quarantined, [3223], [646009],1.0.9492
Rogue.FixTool, HKLM\SOFTWARE\CLASSES\.pox, Quarantined, [4529], [208014],1.0.9492
Rogue.FixTool, HKLM\SOFTWARE\CLASSES\pofile, Quarantined, [4529], [208449],1.0.9492
PUP.Optional.PerfectOptimizer, HKLM\SOFTWARE\WOW6432NODE\WESKYSOFT\Perfect Optimizer, Quarantined, [3223], [646011],1.0.9492
PUP.Optional.PerfectOptimizer, HKLM\SOFTWARE\WOW6432NODE\WESKYSOFT\PerfectOptimizer, Quarantined, [3223], [646011],1.0.9492

Registry Value: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 12
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup\Registry\FirstBackup, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup\Registry\FullBackup, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup\Application, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup\Registry, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup\Service, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Backup, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Update, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Temp, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\PROGRAM FILES (X86)\WINDOWSCLEAR, Quarantined, [3223], [646009],1.0.9492

File: 42
PUP.Optional.PerfectOptimizer, C:\PROGRAM FILES (X86)\WINDOWSCLEAR\CONFIG\REGISTER.JPG, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\about.bmp, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\head.bmp, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\Left.jpg, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\Lng2Const.xml, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\logo.ico, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\logo11.ico, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\Logo64.ico, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\Menu.xml, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\PerfectOptimzer.chm, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\SmallLogo.bmp, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\splash.jpg, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\Thumbs.db, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\config\website.url, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\campus_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\default_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\home_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\interner_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\notebook_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Data\Service\office_model.bat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\aamd532.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\ActiveX.dat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Apps.dat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Components.dat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Config.db, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\FreeUse.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\InstallDll.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\License.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\MiracleLib.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\PerfectOptimizer.ini, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\SEClean.DLL, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\SERes.DLL, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\sqlite3.dll, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\unins000.dat, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\unins000.exe, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\Update.exe, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\website.url, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\WindowsClear.exe, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\Program Files (x86)\WindowsClear\WinUpdate.exe, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\USERS\{username}\Desktop\WindowsClear.lnk, Quarantined, [3223], [646009],1.0.9492
PUP.Optional.PerfectOptimizer, C:\USERS\{username}\DESKTOP\WINDOWSCLEAR.EXE, Quarantined, [3223], [646008],1.0.9492

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

As mentioned before the full version of Malwarebytes 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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