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Removal instructions for SerialTrunc


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What is SerialTrunc?

The Malwarebytes research team has determined that SerialTrunc is a browser hijacker. These so-called "hijackers" alter your startpage or searchscopes so that the effected browser visits their site or one of their choice. This one uses a Browser Helper Object or Add-on that influences your search results.

How do I know if my computer is effected by SerialTrunc?

During install you may see this warning :

warning1.png

And you may see these add-ons:

warning2.png

warning3.png

How did SerialTrunc get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove SerialTrunc?

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-consumer.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.
  • When the scan is complete , make sure that everything is set to "Quarantine", and click Apply Actions.
  • Reboot your computer if prompted.
Is there anything else I need to do to get rid of SerialTrunc?
  • No, but to disable the Firefox add-on you will need Malwarebytes Anti-Malware 2.00 beta or newer.
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 SerialTrunc rogue. It would have warned you before the rogue could install itself, giving you a chance to stop it before it became too late.

protection1.png

Technical details for experts

Signs in a HijackThis log:

O2 - BHO: SerialTrunc - {e76b4f24-4a2f-4e65-ad36-e2aa934e547c} - C:\Program Files\SerialTrunc\SerialTruncbho.dllO23 - Service: Update SerialTrunc - Unknown owner - C:\Program Files\SerialTrunc\updateSerialTrunc.exe
Alterations made by the installer:

File system details [View: All details] (All)---------------------------------------------    Adds the folder C:\Program Files\SerialTrunc       Adds the file SerialTrunc.ico"="1/25/2014 4:12 AM, 1150 bytes, A       Adds the file SerialTruncBHO.dll"="1/25/2014 4:12 AM, 249632 bytes, A       Adds the file SerialTruncUninstall.exe"="2/5/2014 6:42 AM, 240149 bytes, A       Adds the file updateSerialTrunc.exe"="1/25/2014 4:12 AM, 102176 bytes, A       Adds the file updateSerialTrunc.InstallState"="2/5/2014 6:42 AM, 5012 bytes, A    Adds the folder C:\Users\{username}\AppData\Roaming\Mozilla\Firefox\Profiles\joxsq3f5.default\extensions       Adds the file {47351c22-0d6c-4658-a617-795d251145e2}.xpi"="1/25/2014 4:12 AM, 9093 bytes, ARegistry details [View: All details] (All)------------------------------------------    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1AA60054-57D9-4F99-9A55-D0FBFBE7ECD3}]       "(Default)"="REG_SZ, "248D1CEA-6734-4E5B-A5A9-A2CF6648E779"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{4AA46D49-459F-4358-B4D1-169048547C23}]       "(Default)"="REG_SZ, "59928828-78B3-4172-8611-A682A8B5C820"       "id"="REG_SZ, "131"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}]       "(Default)"="REG_SZ, "SerialTrunc"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}\InprocServer32]       "(Default)"="REG_SZ, "C:\Program Files\SerialTrunc\SerialTruncbho.dll"       "ThreadingModel"="REG_SZ, "Apartment"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}\Programmable]    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}\TypeLib]       "(Default)"="REG_SZ, "{033a4be2-42b1-4acb-a69f-d362922136f0}"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}\Version]       "(Default)"="REG_SZ, "1.0"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6BA82436-C754-4B49-B6AD-075AFA9FC625}]       "(Default)"="REG_SZ, "ISerialTruncBHO"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6BA82436-C754-4B49-B6AD-075AFA9FC625}\ProxyStubClsid]       "(Default)"="REG_SZ, "{00020424-0000-0000-C000-000000000046}"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6BA82436-C754-4B49-B6AD-075AFA9FC625}\ProxyStubClsid32]       "(Default)"="REG_SZ, "{00020424-0000-0000-C000-000000000046}"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6BA82436-C754-4B49-B6AD-075AFA9FC625}\TypeLib]       "(Default)"="REG_SZ, "{033A4BE2-42B1-4ACB-A69F-D362922136F0}"       "Version"="REG_SZ, "1.0"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{033A4BE2-42B1-4ACB-A69F-D362922136F0}\1.0]       "(Default)"="REG_SZ, "SerialTruncIEClientLib"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{033A4BE2-42B1-4ACB-A69F-D362922136F0}\1.0\0\win32]       "(Default)"="REG_SZ, "C:\Program Files\SerialTrunc\SerialTruncbho.dll"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{033A4BE2-42B1-4ACB-A69F-D362922136F0}\1.0\FLAGS]       "(Default)"="REG_SZ, "0"    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{033A4BE2-42B1-4ACB-A69F-D362922136F0}\1.0\HELPDIR]       "(Default)"="REG_SZ, "C:\Program Files\SerialTrunc"    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\updateSerialTrunc_RASAPI32]       "ConsoleTracingMask"="REG_DWORD, -65536       "EnableConsoleTracing"="REG_DWORD, 0       "EnableFileTracing"="REG_DWORD, 0       "FileDirectory"="REG_EXPAND_SZ, "%windir%\tracing"       "FileTracingMask"="REG_DWORD, -65536       "MaxFileSize"="REG_DWORD, 1048576    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\updateSerialTrunc_RASMANCS]       "ConsoleTracingMask"="REG_DWORD, -65536       "EnableConsoleTracing"="REG_DWORD, 0       "EnableFileTracing"="REG_DWORD, 0       "FileDirectory"="REG_EXPAND_SZ, "%windir%\tracing"       "FileTracingMask"="REG_DWORD, -65536       "MaxFileSize"="REG_DWORD, 1048576    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}]       "(Default)"="REG_SZ, "SerialTrunc"       "NoExplorer"="REG_DWORD, 1    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SerialTrunc]       "DisplayIcon"="REG_SZ, "C:\Program Files\SerialTrunc\SerialTrunc.ico"       "DisplayName"="REG_SZ, "SerialTrunc"       "DisplayVersion"="REG_SZ, "2014.01.25.024532"       "EstimatedSize"="REG_DWORD, 349       "HelpLink"="REG_SZ, "mailto:support@serialtrunc.com"       "InstallLocation"="REG_SZ, "C:\Program Files\SerialTrunc"       "NoModify"="REG_DWORD, 1       "NoRepair"="REG_DWORD, 1       "Publisher"="REG_SZ, "SerialTrunc"       "QuietUninstallString"="REG_SZ, "C:\Program Files\SerialTrunc\SerialTruncuninstall.exe /S"       "UninstallString"="REG_SZ, "C:\Program Files\SerialTrunc\SerialTruncuninstall.exe"       "URLInfoAbout"="REG_SZ, "http://serialtrunc.com/support"       "URLUpdateInfo"="REG_SZ, "http://serialtrunc.com"    [HKEY_LOCAL_MACHINE\SOFTWARE\SerialTrunc\Chrome]       "sgc"="REG_SZ, "true"    [HKEY_LOCAL_MACHINE\SOFTWARE\SerialTrunc\Firefox]       "sff"="REG_SZ, "false"    [HKEY_LOCAL_MACHINE\SOFTWARE\SerialTrunc\Internet Explorer]       "sie"="REG_SZ, "false"    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Update SerialTrunc]       "DisplayName"="REG_SZ, "Update SerialTrunc"       "ErrorControl"="REG_DWORD, 1       "FailureActions"="REG_BINARY, ......................       "ImagePath"="REG_EXPAND_SZ, ""C:\Program Files\SerialTrunc\updateSerialTrunc.exe""       "ObjectName"="REG_SZ, "LocalSystem"       "Start"="REG_DWORD, 2       "Type"="REG_DWORD, 16    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Approved Extensions]       "{E76B4F24-4A2F-4E65-AD36-E2AA934E547C}"="REG_BINARY, ............    [HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Compatibility Assistant\Persisted]       "C:\Users\Malwarebytes\Desktop\SerialTrunc.exe"="REG_DWORD, 1    [HKEY_CURRENT_USER\Software\SerialTrunc]       "id"="REG_SZ, "2014-02-05 6:42:23"       "iid"="REG_SZ, "def_SerialTrunc"       "is"="REG_SZ, "def_SerialTrunc"    [HKEY_CURRENT_USER\Software\SerialTrunc\Firefox]       "ug"="REG_SZ, "4D7F6E75-C44F-4F69-B8D9-1E53D8C2539D"    [HKEY_CURRENT_USER\Software\SerialTrunc\Internet Explorer]       "ug"="REG_SZ, "6AAF5B15-A115-4A16-8064-A02949E64E84"
Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malwarewww.malwarebytes.orgScan Date: 2/5/2014Scan Time: 6:59:57 AMFilename: mbamlog.txtOS: Windows 7 Service Pack 1CPU: x86User: MalwarebytesFile System: NTFSVersion: 2.00.0.0502Database: v2014.02.05.02Administrator: trueLicense: TrialProtection: trueScan Type: Threat ScanResult: CompletedObjects Scanned: 189614Time Elapsed: 5 min, 28 secMemory: yesStartup: yesFileSystem: yesHeuristicsShuriken: yesArchives: yesPUP: yesPUM: yesProcesses: 1Modules: 0(No malicious items detected)Registry Keys: 12Registry Values: 0(No malicious items detected)Registry Data: 0(No malicious items detected)Folders: 1Files: 6process, PUP.Optional.SerialTrunc.A, delete-on-reboot, [b7df6e6a255584b21d99491a9869649c], C:\Program Files\SerialTrunc\updateSerialTrunc.exe, key, PUP.Optional.SerialTrunc.A, success, [b7df6e6a255584b21d99491a9869649c], HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\Update SerialTrunc, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKLM\SOFTWARE\CLASSES\CLSID\{e76b4f24-4a2f-4e65-ad36-e2aa934e547c}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKLM\SOFTWARE\CLASSES\TYPELIB\{033a4be2-42b1-4acb-a69f-d362922136f0}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKLM\SOFTWARE\CLASSES\INTERFACE\{6BA82436-C754-4B49-B6AD-075AFA9FC625}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{E76B4F24-4A2F-4E65-AD36-E2AA934E547C}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\SETTINGS\{E76B4F24-4A2F-4E65-AD36-E2AA934E547C}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\STATS\{E76B4F24-4A2F-4E65-AD36-E2AA934E547C}, key, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], HKLM\SOFTWARE\CLASSES\CLSID\{E76B4F24-4A2F-4E65-AD36-E2AA934E547C}\INPROCSERVER32, key, PUP.Optional.BrowseFox.A, success, [9006a2365f1b5adc42ac3722e51dbc44], HKLM\SOFTWARE\CLASSES\CLSID\{4AA46D49-459F-4358-B4D1-169048547C23}, key, PUP.Optional.SerialTrunc.A, success, [2670c8101a60d2646f5e2a4523df916f], HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SerialTrunc, key, PUP.Optional.SerialTrunc.A, success, [395dbc1cd1a9d85e59756e0170923ac6], HKCU\SOFTWARE\SerialTrunc, key, PUP.Optional.SerialTrunc.A, success, [b0e6c711e694e155834c70ff19e93cc4], HKLM\SOFTWARE\SerialTrunc, folder, PUP.Optional.SerialTrunc.A, delete-on-reboot, [2670c8101a60d2646f5e2a4523df916f], C:\Program Files\SerialTrunc, file, PUP.Optional.SerialTrunc.A, delete-on-reboot, [b7df6e6a255584b21d99491a9869649c], C:\Program Files\SerialTrunc\updateSerialTrunc.exe, file, PUP.Optional.SerialTrunc.A, success, [ade915c33c3e44f23d78b4af758c28d8], C:\Program Files\SerialTrunc\SerialTruncBHO.dll, file, PUP.Optional.SerialTrunc.A, success, [9105a6327ffbf145466ffa69fc0552ae], C:\Users\Malwarebytes\Desktop\SerialTrunc.exe, file, PUP.Optional.SerialTrunc.A, success, [2670c8101a60d2646f5e2a4523df916f], C:\Program Files\SerialTrunc\SerialTrunc.ico, file, PUP.Optional.SerialTrunc.A, success, [2670c8101a60d2646f5e2a4523df916f], C:\Program Files\SerialTrunc\SerialTruncUninstall.exe, file, PUP.Optional.SerialTrunc.A, success, [2670c8101a60d2646f5e2a4523df916f], C:\Program Files\SerialTrunc\updateSerialTrunc.InstallState, (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.
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