NavExcel Adware

NavExcel malware description and removal detail
Categories:Adware,BHO,Hijacker,Toolbar
Also known as:

[Panda]Adware/NavHelper,Spyware/CommonName
Visible Symptoms:
Files in system folders:
[%PROFILE_TEMP%]\temp.fr????\NavHelper\v2.0.4b\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.2\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUninstaller.exe
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUpdater.exe
[%SYSTEM%]\NaviHelper.dll
[%WINDOWS%]\nxstinst.exe
[%SYSTEM%]\nhelper.dll
[%WINDOWS%]\system\nhelper.dll
[%PROFILE_TEMP%]\temp.fr????\NavHelper\v2.0.4b\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.2\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUninstaller.exe
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUpdater.exe
[%SYSTEM%]\NaviHelper.dll
[%WINDOWS%]\nxstinst.exe
[%SYSTEM%]\nhelper.dll
[%WINDOWS%]\system\nhelper.dll

In order to ensure that the NavExcel is launched automatically each time the system is booted, the NavExcel adds a link to its executable file in the system registry:
HKLM\Microsoft\Windows\CurrentVersion\Run
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUninstaller.exe
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUpdater.exe
[%WINDOWS%]\nxstinst.exe

Platforms / OS: Windows 95, Windows 98, Windows 98 SE, Windows NT, Windows ME, Windows 2000, Windows XP, Windows 2003, Windows Vista

Detecting NavExcel:

Files:
[%PROFILE_TEMP%]\temp.fr????\NavHelper\v2.0.4b\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.2\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUninstaller.exe
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUpdater.exe
[%SYSTEM%]\NaviHelper.dll
[%WINDOWS%]\nxstinst.exe
[%SYSTEM%]\nhelper.dll
[%WINDOWS%]\system\nhelper.dll
[%PROFILE_TEMP%]\temp.fr????\NavHelper\v2.0.4b\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.2\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHelper.htm
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUninstaller.exe
[%PROGRAM_FILES%]\NavExcel\NavHelper\v2.0.4c\NHUpdater.exe
[%SYSTEM%]\NaviHelper.dll
[%WINDOWS%]\nxstinst.exe
[%SYSTEM%]\nhelper.dll
[%WINDOWS%]\system\nhelper.dll

Folders:
[%PROGRAM_FILES%]\navexcel
[%PROGRAM_FILES%]\nh

Registry Keys:
HKEY_CLASSES_ROOT\appid\nhelper.dll
HKEY_CLASSES_ROOT\clsid\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc}
HKEY_CLASSES_ROOT\navexcel.navhelper
HKEY_CLASSES_ROOT\navexcel.navhelper.1
HKEY_CLASSES_ROOT\typelib\{fa4de133-d3c3-4ed4-92d1-cd4dde839ab3}
HKEY_CURRENT_USER\software\microsoft\windows\currentversion\ext\stats\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc}
HKEY_LOCAL_MACHINE\software\classes\clsid\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc}
HKEY_LOCAL_MACHINE\software\classes\interface\{20f36af3-3486-4bb6-8bcb-f1f8abe74d07}
HKEY_LOCAL_MACHINE\software\classes\typelib\{fa4de133-d3c3-4ed4-92d1-cd4dde839ab3}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C1E58A84-95B3-4630-B8C2-D06B77B7A0FC}
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\navhelper
HKEY_LOCAL_MACHINE\software\navexcel
HKEY_CLASSES_ROOT\clsid\{b5ef836b-7582-4d82-9246-17f6c40ddf0f}
HKEY_CLASSES_ROOT\clsid\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc} appid {710bcb5b-8c6c-483e-a4f5-faf083b13184}
HKEY_CLASSES_ROOT\software\microsoft\windows\currentversion\explorer\browser helper objects\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc}
HKEY_LOCAL_MACHINE\software\microsoft\code store database\distribution units\navcab
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\browser helper objects\{c1e58a84-95b3-4630-b8c2-d06b77b7a0fc}

Registry Values:
HKEY_LOCAL_MACHINE\software\classes\appid\nhelper.dll
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\software\classes\appid\nhelper.dll
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.1/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.1/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.2/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.2/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.4/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/conflict.4/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\moduleusage\[%WINDOWS%]/downloaded program files/navinst2.ocx
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\run
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\shareddlls

Removing NavExcel:

An up-to-date copy of ExterminateIt should detect and prevent infection from NavExcel.

If you do not have ExterminateIt and you are worried that you may have infected computer, you could run trial version of ExterminateIt, or remove NavExcel manually.

To completely manually remove NavExcel malware from your computer, you need to delete the Windows registry keys and registry values, the files and folders associated with NavExcel.

1. Use Task Manager to terminate the NavExcel process.
2. Delete the original NavExcel file and folders.
3. Delete the system registry key parameters
4. Update your antivirus databases or buy antivirus software and perform a full scan of the computer.

We recommends that all Internet users back up any important information on their computers, enable maximum protection from network attacks and malicious code on their computers, refrain from executing suspicious programs received from untrustworthy sources.

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ExterminateIt effectively and automatically removes NavExcel from you computer and is a good solution for those who are seeking easy and effective protection for their computer from Trojan Horses, Rootkits, Backdoors, spyware, botnets, keystroke loggers, dialers and other malicious software(malware).

Download ExterminateIt! to instantly get rid of NavExcel!

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