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Removal instructions for WinThruster

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What is WinThruster?

The Malwarebytes research team has determined that WinThruster 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 WinThruster?

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 warninga during install:

warning1.png

warning2.png

warning5.png

and these screens during "operations":

warning6.png

warning7.png

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

warning4.png

How did WinThruster 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 WinThruster?

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 WinThruster?

  • No, Malwarebytes removes WinThruster completely.

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 WinThruster 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:

 

(Solvusoft) C:\Program Files (x86)\WinThruster\WinThruster.exe
C:\Users\Public\Desktop\WinThruster.lnk
C:\Users\{username}\AppData\Roaming\WinThruster
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\WinThruster
C:\Program Files (x86)\WinThruster
(Solvusoft ) C:\Users\{username}\Desktop\Setup_WinThruster_2018.exe

WinThruster (HKLM-x32\...\WinThruster_is1) (Version: 1.3.5.138 - Solvusoft) <==== ATTENTION

Alterations made by the installer:
 

File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Program Files (x86)\WinThruster
       Adds the file help.ico"="5/14/2018 10:01 PM, 25214 bytes, A
       Adds the file IsLicense50.dll"="4/25/2018 9:06 PM, 911416 bytes, A
       Adds the file Local.xml"="7/3/2018 9:42 PM, 47030 bytes, A
       Adds the file Local_en.xml"="7/3/2018 9:42 PM, 47030 bytes, A
       Adds the file PerformanceMonitor.exe"="7/7/2018 9:30 PM, 777952 bytes, A
       Adds the file Post _Scan_Notification_English.wav"="4/25/2018 9:06 PM, 1481838 bytes, A
       Adds the file unins000.dat"="9/18/2018 8:38 AM, 22705 bytes, A
       Adds the file unins000.exe"="9/18/2018 8:37 AM, 1204288 bytes, A
       Adds the file unins000.msg"="9/18/2018 8:38 AM, 22831 bytes, A
       Adds the file WinThruster.exe"="7/7/2018 9:31 PM, 7422176 bytes, A
       Adds the file WinThruster.ini"="9/18/2018 8:39 AM, 628 bytes, A
    Adds the folder C:\ProgramData\Microsoft\Windows\Start Menu\Programs\WinThruster
       Adds the file Uninstall WinThruster.lnk"="9/18/2018 8:38 AM, 1046 bytes, A
       Adds the file WinThruster.lnk"="9/18/2018 8:38 AM, 1061 bytes, A
    Adds the folder C:\Users\{username}\AppData\Roaming\WinThruster\WL
    In the existing folder C:\Users\Public\Desktop
       Adds the file WinThruster.lnk"="9/18/2018 8:38 AM, 1043 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}]
       "(Default)"="REG_SZ", "IIsLicenseMgr"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}\ProxyStubClsid32]
       "(Default)"="REG_SZ", "{00020424-0000-0000-C000-000000000046}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}\TypeLib]
       "(Default)"="REG_SZ", "{8D732308-066E-4E85-9D5C-4410EB6BFDBC}"
       "Version"="REG_SZ", "1.0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IsLicense50.IsLicenseMgr]
       "(Default)"="REG_SZ", "IsLicenseMgr Class"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IsLicense50.IsLicenseMgr\CLSID]
       "(Default)"="REG_SZ", "{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IsLicense50.IsLicenseMgr\CurVer]
       "(Default)"="REG_SZ", "IsLicense50.IsLicenseMgr.1"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IsLicense50.IsLicenseMgr.1]
       "(Default)"="REG_SZ", "IsLicenseMgr Class"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IsLicense50.IsLicenseMgr.1\CLSID]
       "(Default)"="REG_SZ", "{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}\1.0]
       "(Default)"="REG_SZ", "IsLicense 5.0 Type Library"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}\1.0\0\win32]
       "(Default)"="REG_SZ", "C:\Program Files (x86)\WinThruster\IsLicense50.dll"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}\1.0\FLAGS]
       "(Default)"="REG_SZ", "0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}\1.0\HELPDIR]
       "(Default)"="REG_SZ", "C:\Program Files (x86)\WinThruster"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}]
       "(Default)"="REG_SZ", "IsLicenseMgr Class"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\InprocServer32]
       "(Default)"="REG_SZ", "C:\Program Files (x86)\WinThruster\IsLicense50.dll"
       "ThreadingModel"="REG_SZ", "Both"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\ProgID]
       "(Default)"="REG_SZ", "IsLicense50.IsLicenseMgr.1"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\Programmable]
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\TypeLib]
       "(Default)"="REG_SZ", "{8D732308-066E-4e85-9D5C-4410EB6BFDBC}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\VersionIndependentProgID]
       "(Default)"="REG_SZ", "IsLicense50.IsLicenseMgr"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}]
       "(Default)"="REG_SZ", "IIsLicenseMgr"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}\ProxyStubClsid32]
       "(Default)"="REG_SZ", "{00020424-0000-0000-C000-000000000046}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}\TypeLib]
       "(Default)"="REG_SZ", "{8D732308-066E-4E85-9D5C-4410EB6BFDBC}"
       "Version"="REG_SZ", "1.0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\WinThruster_is1]
       "Contact"="REG_SZ", "www.solvusoft.com"
       "DisplayIcon"="REG_SZ", "C:\Program Files (x86)\WinThruster\help.ico"
       "DisplayName"="REG_SZ", "WinThruster"
       "DisplayVersion"="REG_SZ", "1.3.5.138"
       "EstimatedSize"="REG_DWORD", 12881
       "Inno Setup: App Path"="REG_SZ", "C:\Program Files (x86)\WinThruster"
       "Inno Setup: Icon Group"="REG_SZ", "WinThruster"
       "Inno Setup: Language"="REG_SZ", "en"
       "Inno Setup: Setup Version"="REG_SZ", "5.5.9 (u)"
       "Inno Setup: User"="REG_SZ", "{username}"
       "InstallDate"="REG_SZ", "20180918"
       "InstallLocation"="REG_SZ", "C:\Program Files (x86)\WinThruster\"
       "MajorVersion"="REG_DWORD", 1
       "MinorVersion"="REG_DWORD", 3
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "Solvusoft"
       "QuietUninstallString"="REG_SZ", ""C:\Program Files (x86)\WinThruster\unins000.exe" /SILENT"
       "UninstallString"="REG_SZ", ""C:\Program Files (x86)\WinThruster\unins000.exe""
       "URLInfoAbout"="REG_SZ", "www.solvusoft.com"
       "VersionMajor"="REG_DWORD", 1
       "VersionMinor"="REG_DWORD", 3

Malwarebytes log:
 

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 9/18/18
Scan Time: 8:46 AM
Log File: 81b53081-bb0e-11e8-aae7-00ffdcc6fdfc.json

-Software Information-
Version: 3.5.1.2522
Components Version: 1.0.441
Update Package Version: 1.0.6883
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: 252096
Threats Detected: 57
Threats Quarantined: 57
Time Elapsed: 3 min, 14 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.WinThruster, C:\Program Files (x86)\WinThruster\WinThruster.exe, Quarantined, [1466], [182298],1.0.6883

Module: 2
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\IsLicense50.dll, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\WinThruster.exe, Quarantined, [1466], [182298],1.0.6883

Registry Key: 13
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\WOW6432NODE\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\IsLicense50.IsLicenseMgr, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\IsLicense50.IsLicenseMgr.1, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\WOW6432NODE\CLASSES\CLSID\{D7C6C53B-C335-417F-ABB8-F5A157F92EA0}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\TYPELIB\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\INTERFACE\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\WOW6432NODE\INTERFACE\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\WOW6432NODE\CLASSES\INTERFACE\{3C4ABAB8-F6D3-4BC3-922D-43715A228CC2}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\WOW6432NODE\CLASSES\TYPELIB\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\WOW6432NODE\TYPELIB\{8D732308-066E-4E85-9D5C-4410EB6BFDBC}, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\CLASSES\WOW6432NODE\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\InprocServer32, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\WOW6432NODE\CLASSES\CLSID\{D7C6C53B-C335-417f-ABB8-F5A157F92EA0}\InprocServer32, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, HKLM\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\WinThruster_is1, Quarantined, [1466], [182298],1.0.6883

Registry Value: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
PUP.Optional.WinThruster, C:\PROGRAM FILES (X86)\WINTHRUSTER, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\PROGRAMDATA\MICROSOFT\WINDOWS\START MENU\PROGRAMS\WINTHRUSTER, Quarantined, [1466], [182299],1.0.6883

File: 39
PUP.Optional.WinThruster, C:\USERS\PUBLIC\DESKTOP\WINTHRUSTER.LNK, Quarantined, [1466], [260282],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_pl.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\help.ico, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\IsLicense50.dll, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_ar.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_cs.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_da.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_de.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_el.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_en.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_es.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_fi.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_fr.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_hu.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_it.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_ja.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_ko.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_nl.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_no.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_pt-br.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_pt.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_ro.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\local_ru.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_sv.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_tr.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_zh-cn.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Local_zh-tw.xml, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\PerformanceMonitor.exe, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\Post _Scan_Notification_English.wav, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\unins000.dat, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\unins000.exe, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\unins000.msg, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\WinThruster.exe, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\Program Files (x86)\WinThruster\WinThruster.ini, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\DOCUMENTS AND SETTINGS\PUBLIC\Desktop\WinThruster.lnk, Quarantined, [1466], [182298],1.0.6883
PUP.Optional.WinThruster, C:\ProgramData\Microsoft\Windows\Start Menu\Programs\WinThruster\Uninstall WinThruster.lnk, Quarantined, [1466], [182299],1.0.6883
PUP.Optional.WinThruster, C:\ProgramData\Microsoft\Windows\Start Menu\Programs\WinThruster\WinThruster.lnk, Quarantined, [1466], [182299],1.0.6883
PUP.Optional.WinThruster, C:\USERS\{username}\DESKTOP\SETUP_WINTHRUSTER_2018.EXE, Quarantined, [1466], [461226],1.0.6883

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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