Spyware.NetVizor

SUMMARY

Behavior

Spyware.NetVizor is a spyware application that logs keystrokes and captures screenshots.

Symptoms

Your Symantec program detects this threat as Spyware.NetVizor.

Transmission

This program must be manually installed.

Protection

• Virus Definitions (LiveUpdate™ Weekly) July 21, 2004
• Virus Definitions (Intelligent Updater) July 21, 2004

TECHNICAL DETAILS

When the risk is executed, it performs the following actions:

1. May add the following values:
   
   "Srv32Win" = "C:Program Files vclientsysdiag.exe"
   "1SPC" = "C:Program FilesSentryPCservices.exe"
   "Srv32Win" = "C:Program Files vclientsysdiag.exe"
   
   to the registry subkey:
   
   HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRun
   
   so that it starts when Windows starts.
   
   
2. May add the value:
   
   "C:WINDOWSunvise32.exe" = "1"
   
   to the following subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionSharedDLLs
   
   
3. May add the value:
   
   "IgnoreShiftOveride" = "1"
   
   to the following subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon
   
   
4. May create the following registry subkeys:
   
   
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallKeyCaptor
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallNetVizor
   • KEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallSentryPC
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallSpytech SpyAgent
   • HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart Menu
     ProgramsSpytech SpyAgent
   • KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsSentryPC
   • KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsNetVizor
   • KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsKeyCaptor
     
     
5. May create the following folders that contain a number of log files:
   
   
   • %Windir%sacache
   • %Windir%syscache
   • %SystemDrive%Documents and SettingsAll UsersApplication DataAgentSS
   • %SystemDrive%Documents and SettingsAll UsersApplication Datasacache
     
     Note:
   • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:Windows or C:Winnt.
   • %SystemDrive% is a variable that refers to the drive on which Windows is installed. By default, this is drive C.
     
     
6. May then create the following files:
   
   
   • %System% tinvisible.dll
   • %Windir%libimg.dll (legitimate component)
   • %Windir%sbrowse.exe
   • %Windir%snmpapi.dll (legitimate component)
   • %Windir%systemsa32.dll
   • %Windir%yahoodll.dll
   • %Windir%saopts.dat
   • %Windir% vopts.dat
   • %System%acopts.dat
   • %SystemDrive%:Documents and SettingsAll UsersApplication Data[RANDOM CHARACTERS]-acu.dat
   • %SystemDrive%:Documents and SettingsAll UsersApplication Data[USER NAME]-acopts.dat
   • %SystemDrive%:Documents and SettingsAll UsersApplication Datasacache owin.log
   • %Windir%kcopts.dat
   • %Windir% vvopts.dat
   • %Windir% vsys.dat
   • %Windir%egistry.dat
   • %SystemDrive%:Documents and SettingsAll UsersApplication Data[RANDOM CHARACTERS].idf
   • %Windir%syscachewincfg[RANDOM CHARS].ssf
   • %Windir%sadefs.dat
   • %Windir%saopts.dat
   • %SystemDrive%:Documents and SettingsAll UsersApplication Dataemopts.dat
   • %Windir%spcchat.dll
   • %Windir%ACSystem.dll
   • %Windir%SystemSa32N.dll
   • %ProgramFiles% vclientsvchost.exe
   • %ProgramFiles% vclientsysdiag.exe
   • %Windir%SystemSA32.dll
   • %System%NTInvisible.dll
   • %System%spcinvis.dll
   • %Windir%NTInvisible.dll
   • %Windir%sbrowse.exe
   • %Windir%spcviewer.exe
   • %Windir%systemsa32.dll
   • %Windir%yahoodll.dll
   • %Windir%clfct.dll
   • %Windir%sview.exe
   • %System%sinvfct.dll
   • %System%msvcr70.dll
   • %System%sinvfct.dll
   • %Windir%Base64.dll
   • %Windir%sysk32.dll
   • %Windir%unvise32.exe (legitimate component)
     
     Note:
   • %System% is a variable that refers to the System folder. By default this is C:WindowsSystem (Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP).
   • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:Program Files.
     
     
7. May also create one of the following folders:
   
   
   • %ProgramFiles%NetVizor
   • %ProgramFiles%SentryPC
   • %ProgramFiles%Spytech SoftwareSpytech SpyAgent
   • %ProgramFiles%KeyCaptor
     
     
8. May populate the above folders with the following files:
   
   
   • deploy.exe
   • help.htm
   • license.txt
   • nostealth.exe
   • readme!.txt
   • svchost.exe
   • sysdiag.exe
   • uninstal.log
   • uninstaller.dll
   • services.exe
   • Other files, depending on the version of the spyware
     
     
9. May create one of the following folders:
   
   
   • %SystemDrive%Documents and settingsAll UsersStart MenuProgramsKeyCaptor
   • %SystemDrive%Documents and settingsAll UsersStart MenuProgramsNetVizor
   • %SystemDrive%Documents and settingsAll UsersStart MenuProgramsSentryPC
   • %SystemDrive%Documents and settingsAll UsersStart MenuProgramsSpytech SpyAgent
     
     
10. May populate the above folder with the following files:
    
    
    • Help Documentation.lnk
    • License EULA.lnk
    • Read me.lnk
    • Other files, depending on the version of the spyware
      
      
11. May also create the following folder, which contains legitimate Win Packet Capture library components:
    
    %ProgramFiles%WinConfig winpcap
    
    
12. Can be run in full silent mode with no splash screen in the full, non-trial version.
    
    
13. Can create an Administrative install or a more basic Stealth install (no help files or shortcuts)
    
    
14. Provides an option to create an uninstaller.
    
    
15. Records some of the following data:
    
    
    • Keystrokes
    • Web sites visited
    • Files opened
    • Email sent/received
    • Instant messages sent/received
    • Internet connections

REMOVAL

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.

1. Update the definitions.
2. Restart the computer in Safe mode.
3. Run a full system scan.
4. Delete the value that was added to the registry.
   

For specific details on each of these steps, read the following instructions.

1. To update the definitions
To obtain the most recent definitions, start your Symantec program and run LiveUpdate.

2. To restart the computer in Safe mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode. For instructions, read the document, "How to start the computer in Safe Mode."

3. To run the scan

1. Start your Symantec antivirus program, and then run a full system scan.
   
2. If any files are detected as Spyware.NetVizor and depending on which software version you are using, you may see one or more of the following options:
   
   
   Note: This applies only to versions of Norton AntiVirus that support Security Risk detection. If you are running a version of Symantec AntiVirus Corporate Edition that supports Security Risk detection, and Security Risk detection has been enabled, you will only see a message box that gives the results of the scan. If you have questions in this situation, contact your network administrator.
   
   • Exclude (Not recommended): If you click this button, it will set the threat so that it is no longer detectable. That is, the antivirus program will keep the security risk on your computer and will no longer detect it to remove from your computer.
     
     
   • Ignore or Skip: This option tells the scanner to ignore the threat for this scan only. It will be detected again the next time that you run a scan.
     
     
   • Cancel: This option is new to Norton Antivirus 2005. It is used when Norton Antivirus 2005 has determined that it cannot delete a security risk. This Cancel option tells the scanner to ignore the threat for this scan only, and thus, the threat will be detected again the next time that you run a scan.
     
     To actually delete the security risk:
     • Click its file name (under the Filename column).
     • In the Item Information box that displays, write down the full path and file name.
     • Then use Windows Explorer to locate and delete the file.
       
       If Windows reports that it cannot delete the file, this indicates that the file is in use. In this situation, complete the rest of the instructions on this page, restart the computer in Safe mode, and then delete the file using Windows Explorer.
       
       
   • Delete: This option will attempt to delete the detected files. In some cases, the scanner will not be able to do this.
     • If you see a message, "Delete Failed" (or similar message), manually delete the file.
     • Click the file name of the threat that is under the Filename column.
     • In the Item Information box that displays, write down the full path and file name.
     • Then use Windows Explorer to locate and delete the file.
       
       If Windows reports that it cannot delete the file, this indicates that the file is in use. In this situation, complete the rest of the instructions on this page, restart the computer in Safe mode, and then delete the file using Windows Explorer.
       

4. To delete the value from the registry

Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.

1. Click Start > Run.
2. Type regedit
   
   Then click OK.
   
   
3. Navigate to the subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun
   
   
4. In the right pane, delete the values:
   
   "Srv32Win" = "C:Program Files vclientsysdiag.exe"
   "1SPC" = "C:Program FilesSentryPCservices.exe"
   "Srv32Win" = "C:Program Files vclientsysdiag.exe"
   
   
5. Navigate to the subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionSharedDLLs
   
   
6. In the right pane, delete the value:
   
   "C:WINDOWSunvise32.exe" = "1"
   
   
7. Navigate to the subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon
   
   
8. In the right pane, delete the value:
   
   "IgnoreShiftOveride" = "1"
   
   
9. Navigate to and delete the following subkeys:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallKeyCaptor
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallNetVizor
   KEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallSentryPC
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallSpytech SpyAgent
   HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsSpytech SpyAgent
   KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsSentryPC
   KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsNetVizor
   KEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerMenuOrderStart MenuProgramsKeyCaptor
   
   
10. Exit the registry editor.