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.

Unvirex

Unvirex

Updated:
June 02, 2009
Infection Length:
13,029,376 bytes
Name:
Unvirex
Version:
1.0.0.1
Publisher:
www.univirex.com
Risk Impact:
Medium
Systems Affected:
Windows

Behavior

Unvirex is a misleading application that may give exaggerated reports of threats on the computer.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version March 23, 2017 revision 037
  • Initial Daily Certified version June 02, 2009 revision 003
  • Latest Daily Certified version March 23, 2017 revision 041
  • Initial Weekly Certified release date June 03, 2009
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Behavior
The program can be downloaded and manually installed.

The program reports false or exaggerated system security threats on the computer.





The user is then prompted to pay for a full license of the application in order to remove the threats.





Installation
When the program is executed, it creates the following files:
  • %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\UnVirex.lnk
  • %UserProfile%\Local Settings\Temp\[RANDOM CHARACTERS]\ext.dll
  • %UserProfile%\Local Settings\Temp\[RANDOM CHARACTERS]\System.dll
  • C:\Documents and Settings\All Users\Desktop\UnVirex.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\How to Register UnVirex.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\Register UnVirex.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\Uninstall.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\UnVirex.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\UnVirex.lnk
  • %ProgramFiles%\UnVirex\daily.cvd
  • %ProgramFiles%\UnVirex\Drvfltip.sys
  • %ProgramFiles%\UnVirex\hjengine.dll
  • %ProgramFiles%\UnVirex\IEAddon.dll
  • %ProgramFiles%\UnVirex\main.cvd
  • %ProgramFiles%\UnVirex\MFC71.dll
  • %ProgramFiles%\UnVirex\MFC71ENU.DLL
  • %ProgramFiles%\UnVirex\msvcp71.dll
  • %ProgramFiles%\UnVirex\msvcr71.dll
  • %ProgramFiles%\UnVirex\pthreadVC2.dll
  • %ProgramFiles%\UnVirex\siglsp.dll
  • %ProgramFiles%\UnVirex\uninstall.exe
  • %ProgramFiles%\UnVirex\UnVirex.exe


Next, the program creates the following registry entry so that it executes whenever Windows starts:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"UnVirex" = "C:\Program Files\UnVirex\UnVirex.exe"

It then creates the following registry entries, which modify the LSP stack:
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Winsock2\Parameters\Protocol_Catalog9\Catalog_Entries\00000001\"PackedCatalogItem" = "%ProgramFiles%\UnVirex\siglsp.dll"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Winsock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000013\"PackedCatalogItem" = "%ProgramFiles%\UnVirex\siglsp.dll"


The program also creates the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform\"UnVirex" = "UnVirex"

It also creates the following registry subkeys:
  • HKEY_CLASSES_ROOT\AppID\IEAddon.DLL
  • HKEY_CLASSES_ROOT\AppID\{C0E56AC2-9F72-436E-B6E7-AEC28AF9E4EB}
  • HKEY_CLASSES_ROOT\CLSID\{CCB5551D-8594-4999-85F9-1E3EABCB95AC}
  • HKEY_CLASSES_ROOT\IEAddon.StatusBarPane.1 HKEY_CLASSES_ROOT\IEAddon.StatusBarPane
  • HKEY_CLASSES_ROOT\Interface\{5B184B9D-B7BD-4FEA-8D1F-5E27182206A5}
  • HKEY_CLASSES_ROOT\TypeLib\{3ED0E410-5C8E-47B6-A75D-D10B886E903C}
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CCB5551D-8594-4999-85F9-1E3EABCB95AC}
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnVirex
  • HKEY_LOCAL_MACHINE\SOFTWARE\UnVirex
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DrvFltIp
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 them using from 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 them using from 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.