Switchsniff

Switchsniff

Updated:
08 June 2006
Risk Impact:
Low
Systems Affected:
Windows

Behavior

Switchsniff is a network sniffer that detects and intercepts packets on the network.

Virus definitions prior to February 12th, 2007 may detect this risk as Hacktool.Switchsniff.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 02 October 2014 revision 022
  • Initial Daily Certified version 08 June 2006
  • Latest Daily Certified version 08 June 2006
  • Initial Weekly Certified release date 14 June 2006
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
The risk is a program that can poll and collect all the network packets in a switched LAN. It can scan and display all active and hidden hosts. It can recover ARP spoofing and can detect which computer in the network is performing an ARP spoof. It also has several other network functions for filtering, routing, scanning, blocking and so on. It might be used in conjunction with a packet sniffer for detailed traffic logging and analysis.

When the risk is executed it creates the following files:
  • %Systemdrive%\Documents and Settings\All Users\Start Menu\Programs\SwitchSniffer\Readme First.lnk
  • %Systemdrive%\Documents and Settings\All Users\Start Menu\Programs\SwitchSniffer\SwitchSniffer.lnk
  • %Systemdrive%\Documents and Settings\All Users\Start Menu\Programs\SwitchSniffer\Uninstall SwitchSniffer.lnk
  • %ProgramFiles%\NextSecurity.NET\countryflag.dll
  • %ProgramFiles%\NextSecurity.NET\ip-to-country.csv
  • %ProgramFiles%\NextSecurity.NET\npf.sys
  • %ProgramFiles%\NextSecurity.NET\ReadMe.txt
  • %ProgramFiles%\NextSecurity.NET\services
  • %ProgramFiles%\NextSecurity.NET\SwitchSniffer.exe
  • %Systemdrive%\ssniffer_excep.txt


The risk may also create the following files, that are part of a legitimate Winpcap library:
  • %System%\packet.dll
  • %System%\drivers\npf.sys
  • %System%\pthreadVC.dll
  • %System%\WanPacket.dll


The risk creates the following legitimate folders, related to InstallShield:
  • %COMMONPROGRAMFILES%\InstallShield
  • %PROGRAMFILES%\InstallShield Installation Information


The risk creates the following registry subkeys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{B9AEF567-6DD3-4B30-BCC6-E88829BEDE98}
HKEY_LOCAL_MACHINE\SOFTWARE\NextSecurity.NET\SwitchSniffer
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\SwitchSniffer
HKEY_CURRENT_USER\Software\SwitchSniffer

The risk also creates several other registry subkeys related to legitimate components, like Installshield, Winpcap and Asprotect.
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
  1. Disable System Restore (Windows Me/XP).
  2. Update the virus definitions.
  3. Run a full system scan.
  4. Delete any values added to the registry.

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

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article: Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (Article ID: Q263455).

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain virus definitions.
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to Virus Definitions (Intelligent Updater).

The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions . For detailed instructions read the document: How to update virus definition files using the Intelligent Updater .

3. To run a full system scan
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected, follow the instructions displayed by your antivirus program.
Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode . Once you have restarted in Safe mode, run the scan again.


After the files are deleted, restart the computer in Normal mode and proceed with the next section.

Warning messages may be displayed when the computer is restarted, since the threat may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [FILE PATH]
Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

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 subkeys only. For instructions refer to the document: How to make a backup of the Windows registry .
  1. Click Start > Run.
  2. Type regedit
  3. Click OK.

    Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.

  4. Navigate to and delete the following registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{B9AEF567-6DD3-4B30-BCC6-E88829BEDE98}
    HKEY_LOCAL_MACHINE\SOFTWARE\NextSecurity.NET\SwitchSniffer
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\SwitchSniffer
    HKEY_CURRENT_USER\Software\SwitchSniffer

  5. Exit the Registry Editor.