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DefenseVirus

Summary

Updated: February 8, 2012 11:29:00 AM
Type: Misleading Application
Name: DefenseVirus
Risk Impact: Low
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000

Behavior

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

Antivirus Protection Dates

  • Initial Rapid Release version January 26, 2012 revision 020
  • Latest Rapid Release version February 8, 2012 revision 021
  • Initial Daily Certified version January 26, 2012 revision 033
  • Latest Daily Certified version February 9, 2012 revision 003
  • Initial Weekly Certified release date February 1, 2012

Technical Details

Updated: February 8, 2012 11:29:00 AM
Type: Misleading Application
Name: DefenseVirus
Risk Impact: Low
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
Behavior
The program must be manually installed.

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




Installation
The risk may arrive packaged with different names. Some of the names include the following:
  • DefenseVirus
  • cleancatch
  • VaccineClean
  • FastScan
  • CoreScan
  • ProtectCode
  • SmartSecure


When the program is executed, it creates the following shortcut in the Quick Launch toolbar:
C:\Documents and Settings\Administrator\Application Data\Microsoft\Internet Explorer\Quick Launch\[SOFTWARE NAME].lnk

It also creates the following shortcuts in the Start Menu:
  • C:\Documents and Settings\Administrator\Start Menu\Programs\[SOFTWARE NAME]\[SOFTWARE NAME][DOUBLE-BYTE CHARACTERS].lnk
  • C:\Documents and Settings\Administrator\Start Menu\Programs\[SOFTWARE NAME]\[SOFTWARE NAME].lnk
  • C:\Documents and Settings\Administrator\Start Menu\[SOFTWARE NAME].lnk

The program then creates the following files:
  • C:\Program Files\[SOFTWARE NAME]\conf.ini
  • C:\Program Files\[SOFTWARE NAME]\db\addb.dat
  • C:\Program Files\[SOFTWARE NAME]\db\adsub.dat
  • C:\Program Files\[SOFTWARE NAME]\db\adtc.dat
  • C:\Program Files\[SOFTWARE NAME]\db\avmon.dat
  • C:\Program Files\[SOFTWARE NAME]\db\filter.dll
  • C:\Program Files\[SOFTWARE NAME]\db\inter.dll
  • C:\Program Files\[SOFTWARE NAME]\db\pwdb.dat
  • C:\Program Files\[SOFTWARE NAME]\db\vsdb.dat
  • C:\Program Files\[SOFTWARE NAME]\[SOFTWARE NAME].exe
  • C:\Program Files\[SOFTWARE NAME]\DVAutoUpdate.exe
  • C:\Program Files\[SOFTWARE NAME]\DVEngine.dll
  • C:\Program Files\[SOFTWARE NAME]\DVUpdateServer.dat
  • C:\Program Files\[SOFTWARE NAME]\Ep.dat
  • C:\Program Files\[SOFTWARE NAME]\etc\DVFilterDriver.SYS
  • C:\Program Files\[SOFTWARE NAME]\etc\dvMon.exe
  • C:\Program Files\[SOFTWARE NAME]\etc\DVmonRemote.dll
  • C:\Program Files\[SOFTWARE NAME]\etc\dvReg.exe
  • C:\Program Files\[SOFTWARE NAME]\Lang\kr.xml
  • C:\Program Files\[SOFTWARE NAME]\partner.ini
  • C:\Program Files\[SOFTWARE NAME]\skin\default.avs
  • C:\Program Files\[SOFTWARE NAME]\SoDVUpdateServer.dat
  • C:\Program Files\[SOFTWARE NAME]\Uninstall.exe

The program creates the following registry entry so that it runs every time Windows starts:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"[SOFTWARE NAME]Main" = "C:\Program Files\[SOFTWARE NAME]\[SOFTWARE NAME].exe /Boot"

The program also creates the following registry entries so that it can be uninstalled:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\[SOFTWARE NAME]Main\"DisplayName" = "[SOFTWARE NAME]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\[SOFTWARE NAME]Main\"UninstallString" = "C:\Program Files\[SOFTWARE NAME]\Uninstall.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\[SOFTWARE NAME]Main\"DisplayIcon" = "C:\Program Files\[SOFTWARE NAME]\Uninstall.exe"

The program creates the following registry subkey to register itself:
HKEY_LOCAL_MACHINE\SOFTWARE\[SOFTWARE NAME]


Similar Security Risks

cleancatch



VaccineClean



Fastscan



CoreScan



ProtectCode



SmartSecure

Removal

Updated: February 8, 2012 11:29:00 AM
Type: Misleading Application
Name: DefenseVirus
Risk Impact: Low
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
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 LiveUpdateâ„¢ 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.

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