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TabNav

Posted: March 30, 2015

Threat Metric

Threat Level: 2/10
Infected PCs: 5,565
First Seen: March 30, 2015
Last Seen: June 6, 2023
OS(es) Affected: Windows

TabNav is a Potentially Unwanted Program (PUP), created by FlowSurf Apps. As a typical representative of the family of PUPs, TabNav offers very limited utility for the user. The tiny application provides a button on Google that should reportedly optimize the search speed. However, the majority of people don't find TabNav helpful as its presence leads to the creation of many ads. The adware promotes partner sites, which legitimacy cannot be confirmed. The user may notice that the popping up messages and banners are surprisingly accurate and attract his interest considerably. This happens because TabNav records the browsing history and monitors the searches in order to adjust the displayed content to the taste of the user. Keeping the PUP is not recommended as it unnecessarily slows down the browser and may trick the user into potentially harmful domains. In order to keep TabNav away, people should read the EULA of freeware and cancel the installation of suspicious elements. If the adware is already present, it can easily be removed by special security software.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



%PROGRAMFILES%\TabNav\abengine.exe File name: abengine.exe
Size: 1.33 MB (1332576 bytes)
MD5: 50a84b3af5137c7eb5ef0b041865a2fc
Detection count: 2,686
File type: Executable File
Mime Type: unknown/exe
Path: %PROGRAMFILES%\TabNav
Group: Malware file
Last Updated: December 18, 2019
C:\Program Files (x86)\Nav\abengine.exe File name: abengine.exe
Size: 1.46 MB (1462832 bytes)
MD5: 5dbcb151b7bed678a3c148777cb3d9c4
Detection count: 588
File type: Executable File
Mime Type: unknown/exe
Path: C:\Program Files (x86)\Nav\abengine.exe
Group: Malware file
Last Updated: March 12, 2022
%PROGRAMFILES(x86)%\TabNav\abengine.exe File name: abengine.exe
Size: 1.48 MB (1481808 bytes)
MD5: b4314a103452474c36b337e1f4c83d38
Detection count: 520
File type: Executable File
Mime Type: unknown/exe
Path: %PROGRAMFILES(x86)%\TabNav
Group: Malware file
Last Updated: August 27, 2016
%PROGRAMFILES%\TabNav\abengine.exe File name: abengine.exe
Size: 1.46 MB (1469352 bytes)
MD5: d7eadccc1103a77e35b5997558367a29
Detection count: 333
File type: Executable File
Mime Type: unknown/exe
Path: %PROGRAMFILES%\TabNav
Group: Malware file
Last Updated: March 24, 2020
C:\Program Files\tabnav\setupfs_1123.exe File name: C:\Program Files\tabnav\setupfs_1123.exe
MD5: 369c15bae2ca70bc466fc2a53760fb1a
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
abenginecert.dll File name: abenginecert.dll
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
abengine64.dll File name: abengine64.dll
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
lengine64.exe File name: lengine64.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
abengine.dll File name: abengine.dll
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
abenginep.exe File name: abenginep.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
abenginew.exe File name: abenginew.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
abenginewd.dll File name: abenginewd.dll
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
lengine.exe File name: lengine.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
zufap3002.exe File name: zufap3002.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{RegistryKeys}SOFTWARE\TabNavSOFTWARE\Wow6432Node\TabNavHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}TabNav

Additional Information

The following directories were created:
%PROGRAMFILES%\TabNav%PROGRAMFILES(x86)%\TabNav
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