Threat Explorer

The Threat Explorer is a comprehensive resource consumers can turn to for daily, accurate, up-to-date information on the latest threats, risks and vulnerabilities.

PUA.ExqWebSearch

PUA.ExqWebSearch

Updated:
June 12, 2015
Risk Impact:
Low
Systems Affected:
Windows

Behavior

PUA.ExqWebSearch is a potentially unwanted application that installs a browser extension that will set a new home page, redirect Web searches, and display pop-up advertisements.

Note: Definitions prior to June 12, 2015 may detect this threat as ExqWebSearch.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version November 15, 2017 revision 037
  • Initial Daily Certified version June 04, 2013 revision 016
  • Latest Daily Certified version November 16, 2017 revision 001
  • Initial Weekly Certified release date June 05, 2013
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
This potentially unwanted application must be downloaded and executed manually. It may also arrive bundled with other software.

When the program is executed, it creates the following files:
  • %UserProfile%\Application Data\eIntaller\02F8BFAEBE90486582B8DDE66D78D114\Config.ini
  • %UserProfile%\Application Data\eIntaller\02F8BFAEBE90486582B8DDE66D78D114\eXQ.exe
  • %UserProfile%\Application Data\eIntaller\9B85941F625E4efd8BADDAF92EE704E4\Config.ini
  • %UserProfile%\Application Data\eIntaller\9B85941F625E4efd8BADDAF92EE704E4\eXQ.exe

The program modifies the following registry subkeys:
  • HKEY_USERS\S-1-5-21-1275210071-920026266-1060284298-1003\Software\Microsoft\Windows\CurrentVersion\Internet Settings\MigrateProxy
  • HKEY_USERS\S-1-5-21-1275210071-920026266-1060284298-1003\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable
  • HKEY_CURRENT_CONFIG\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable
  • HKEY_USERS\S-1-5-21-1275210071-920026266-1060284298-1003\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Personal
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{a20cd692-8e41-11e1-9999-806d6172696f}\BaseClass
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Common Documents

The program will then install a browser extension that will perform the following actions:
  • Set a new home page
  • Redirect Web searches
  • Display pop-up advertisements
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: Maksim Oleynikov