Threat Explorer

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PUA.Bestsocialfeed

PUA.Bestsocialfeed

Updated:
April 19, 2016
Name:
BestSocialFeed
Risk Impact:
Low
Systems Affected:
Windows

Behavior

PUA.Bestsocialfeed is a potentially unwanted application that may modify browser settings on the computer.

Antivirus Protection Dates

  • Initial Rapid Release version April 19, 2016
  • Latest Rapid Release version September 22, 2016 revision 004
  • Initial Daily Certified version April 19, 2016
  • Latest Daily Certified version September 22, 2016 revision 025
  • Initial Weekly Certified release date April 20, 2016
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
The program may arrive on the computer silently and without the user's consent.

When the program is executed, it may create the following files:
  • %SystemDrive%\Program Files\Search Software\nthook.dll
  • %SystemDrive%\Program Files\Search Software\SearchSettings.exe
  • %SystemDrive%\Program Files\Search Software\Uninst.exe
  • %SystemDrive%\Program Files\Web Software\basic.css
  • %SystemDrive%\Program Files\Web Software\basic.js
  • %SystemDrive%\Program Files\Web Software\basic_ie.css
  • %SystemDrive%\Program Files\Web Software\ietb.dll
  • %SystemDrive%\Program Files\Web Software\jquery.js
  • %SystemDrive%\Program Files\Web Software\jquery.simplemodal.js
  • %SystemDrive%\Program Files\Web Software\Uninst.exe
  • %SystemDrive%\Program Files\Web Software\ver

The program may create the following registry entries:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5424A2A8-B0BF-416A-BF5C-3C1D4DEE8EB7}\: "Advanced Search"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\: "System Search Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\InprocServer32\: "%SystemDrive%\Program Files\Web Software\ietb.dll"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\InprocServer32\ThreadingModel: "Apartment"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\ProgID\: "BestSocialFeed.BHO.1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\TypeLib\: "{53BFB96C-0B4A-4B1E-844F-39D6463C087F}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\VersionIndependentProgID\: "BestSocialFeed.BHO"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D580254F-5E17-4AE0-9C41-60A0526A8ED6}\InprocHandler32\: "%SystemDrive%\Program Files\Google\Update\1.3.29.5\psmachine.dll"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D580254F-5E17-4AE0-9C41-60A0526A8ED6}\InprocHandler32\ThreadingModel: "Both"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\: "BestSocialFeed - Connect with Friends"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\InprocServer32\: "%SystemDrive%\Program Files\Web Software\ietb.dll"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\InprocServer32\ThreadingModel: "Apartment"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\ProgID\: "BestSocialFeed.Toolbar.1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\TypeLib\: "{53BFB96C-0B4A-4B1E-844F-39D6463C087F}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}\VersionIndependentProgID\: "BestSocialFeed.Toolbar"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{53BFB96C-0B4A-4B1E-844F-39D6463C087F}\1.0\: "BestSocialFeed Internet Explorer Tools Library"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{53BFB96C-0B4A-4B1E-844F-39D6463C087F}\1.0\0\win32\: "%SystemDrive%\Program Files\Web Software\ietb.dll"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{53BFB96C-0B4A-4B1E-844F-39D6463C087F}\1.0\FLAGS\: "0"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{53BFB96C-0B4A-4B1E-844F-39D6463C087F}\1.0\HELPDIR\: "%SystemDrive%\Program Files\Web Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.BHO\: "BestSocialFeed"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.BHO\CLSID\: "{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.BHO\CurVer\: "BestSocialFeed.Toolbar.1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.BHO.1\: "BestSocialFeed"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.BHO.1\CLSID\: "{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.Toolbar\: "BestSocialFeed - Connect with Friends"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.Toolbar\CLSID\: "{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.Toolbar\CurVer\: "BestSocialFeed.Toolbar.1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.Toolbar.1\: "BestSocialFeed - Connect with Friends"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BestSocialFeed.Toolbar.1\CLSID\: "{D69C47D9-4C95-4A1D-95EE-CCD910A8A7BC}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\: "BestSocialFeed"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{AE5CB94E-0C0F-405D-B81B-ED8F6EB0725E}\NoExplorer: 0x00000001
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Search Software\DisplayName: "Search Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Search Software\Publisher: "Search Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Search Software\DisplayVersion: "1.0"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Search Software\UninstallString: "%SystemDrive%\Program Files\Search Software\Uninst.exe /SSETTINGS"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Web Software\DisplayName: "Web Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Web Software\Publisher: "Web Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Web Software\DisplayVersion: "Web Software"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Web Software\UninstallString: "%SystemDrive%\Program Files\Web Software\Uninst.exe"
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\MAO Settings\AddonLoadTimeThreshold: 0x00007530

The program may install the following components:
  • Web search engine
  • Browser extension

The program may modify browser security settings to hide its presence by disabling the browser's add-on pop-up notifications.
You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan . If that does not resolve the problem you can try one of the options available below.



FOR NORTON USERS
If you are a Norton product user, we recommend you try the following resources to remove this risk.

Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .


How to reduce the risk of infection
The following resources provide further information and best practices to help reduce the risk of infection.


FOR BUSINESS USERS
If you are a Symantec business product user, we recommend you try the following resources to remove this risk.

Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.


Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .


How to reduce the risk of infection
The following resource provides further information and best practices to help reduce the risk of infection.
Protecting your business network



MANUAL REMOVAL
The following instructions pertain to all current Symantec antivirus products.

1. Performing a full system scan
How to run a full system scan using your Symantec product


2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.
Writeup By: Saurabh Sharma