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.

Adware.DelFin

Adware.DelFin

Updated:
February 13, 2007
Publisher:
PromulGate
Risk Impact:
High
File Names:
adl_mteststub.exe
Systems Affected:
Windows

Behavior


Adware.DelFin is a program that downloads adware. It represents itself as a media viewer.

Note: Definitions prior to March 30, 2005 may detect this security risk as Adware.Delfin.B.

Symptoms


Your Symantec program detects Adware.DelFin.

Behavior


May be bundled with other applications such as Kazaa.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version July 06, 2017 revision 020
  • Initial Daily Certified version March 31, 2004
  • Latest Daily Certified version July 07, 2017 revision 004
  • Initial Weekly Certified release date March 31, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.DelFin is installed, it does the following:
  1. Downloads adware to the computer.

  2. Creates the following folders:

    • %UserProfile%\Application Data\nsv\cache
    • %UserProfile%\Application Data\\picsvr
    • %UserProfile%\Application Data\\tatss
    • %UserProfile%\Application Data\\Dpi
    • %UserProfile%\Application Data\\pcsvc
    • %UserProfile%\Application Data\\vmss
    • %UserProfile%\Application Data\\wsxs
    • %UserProfile%\Application Data\\wsxs\Adverts
    • %System%\nsvsvc
    • %System%\wsxsvc
    • %System%\vmss
    • %CommonProgramFiles%\dpi
    • %ProgramFiles%\DelFin
    • %ProgramFiles%\DelFin\PromulGate\Adverts
    • %ProgramFiles%\DelFin\PromulGate
    • %UserProfile%\Start Menu\Programs\DelFin Media Viewer
    • %UserProfile%\Local Settings\Temp\vmstmp
    • %SystemDrive%\Documents and Settings\Administrator\Local Settings\Temp\vmstmp
    • %UserProfile%\Start Menu\Programs\DelFin Media Viewer
    • %Windir%\system32\pgtools
    • %Windir%\system32\pcs

      Notes:
    • %UserProfile% is a variable that refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> (Windows NT/2000/XP).
    • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files
    • %CommonProgramFiles% is a variable that refers to the Common Files folder. By default, this is C:\Program Files\Common Files.
    • %SystemDrive% is a variable that refers to the drive on which Windows is installed. By default, this is drive C.
    • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows (Windows 95/98/Me/XP) or C:\Winnt (Windows NT/2000).
    • %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  3. Creates the following files:

    • %ProgramFiles%\DelFin\PromulGate\delfinAF.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinAD.ebd
    • %ProgramFiles%\DelFin\PromulGate\delfinBD.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinCO.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinDL.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinED.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinID.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinLD.edx
    • %ProgramFiles%\DelFin\PromulGate\delfinLO.edx
    • %ProgramFiles%\DelFin\PromulGate\Description.txt
    • %ProgramFiles%\DelFin\PromulGate\License.txt
    • %ProgramFiles%\DelFin\PromulGate\PgMonitr.exe
    • %ProgramFiles%\DelFin\PromulGate\PgSDK.dll
    • %ProgramFiles%\DelFin\PromulGate\preference.dat
    • %ProgramFiles%\DelFin\PromulGate\uninstall.log
    • %ProgramFiles%\DelFin\PromulGate\user.html
    • %ProgramFiles%\DelFin\PromulGate\PgMonitr.exe
    • %CommonProgramFiles%\dpi\Dpi.exe
    • %UserProfile%\Local Settings\Temp\uppicsvr.exe
    • %SystemDrive%\Documents and Settings\Administrator\Local Settings\Temp\vmstmp\vmstmp.exe
    • %System%\picsvr\picsvr.exe
    • %System%\nsvsvc\nsvs.dll
    • %System%\vmss\vmss.exe
    • %System%\wsxsvc\wsx.dll
    • %System%\wsxsvc\wsx.ocx
    • %System%\wsxsvc\wsxsvc.exe
    • %System%\nsvsvc\nsvsvc.exe
    • %Windir%\Temp\uppicsvr.exe
    • %Windir%\SYSTEM32\pgtools\init.dll
    • %Windir%\SYSTEM32\pgtools\tatss.dll
    • %Windir%\SYSTEM32\pgtools\tatss.exe
    • C:\keys.ini

  4. May add the values:

    "Dpi" = "[PATH TO ADWARE]"
    "Tat" = "[PATH TO ADWARE]"
    "Pcsv" = "[PATH TO ADWARE]"
    "Nsv" = "%System%\nsvsvc\nsvsvc.exe"
    "pgstub.exe" = "[PATH TO ADWARE]"
    "picsvr" = "%System%\picsvr\picsvr.exe"
    "Promulgate" = "[PATH TO ADWARE]"
    "vmss" = "%System%\vmss\vmss.exe"
    "Dvx" = "[PATH TO ADWARE]"
    "vcmpin" = "[PATH TO ADWARE]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    so that the adware runs every time Windows starts.

  5. Creates the following registry subkeys:

    HKEY_CLASSES_ROOT\Interface\{41700749-A109-4254-AF13-BE54011E8783}
    HKEY_CLASSES_ROOT\CLSID\{D0070620-1E72-42E7-A14C-3A255AD31839}
    HKEY_CLASSES_ROOT\TypeLib\{2A7DB8D1-43BE-4AD3-A81E-9BB8C9D00073} HKEY_CLASSES_ROOT\Interface\{2BB15D36-43BE-4743-A3A0-3308F4B1A610} HKEY_CLASSES_ROOT\CLSID\{A8BD9566-9895-4FA3-918D-A51D4CD15865} HKEY_CLASSES_ROOT\VCCPGDATAACCESS.PgDataAccessCtrl.1
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DelFin Media Viewer
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PgTools
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PGate
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DisplayUtility
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DMVLite
    HKEY_LOCAL_MACHINE\SOFTWARE\Dvx
    HKEY_LOCAL_MACHINE\SOFTWARE\Tat
    HKEY_LOCAL_MACHINE\SOFTWARE\Pcsv
    HKEY_LOCAL_MACHINE\SOFTWARE\Mvu
    HKEY_LOCAL_MACHINE\SOFTWARE\picsvr
    HKEY_LOCAL_MACHINE\SOFTWARE\DelFin
    HKEY_LOCAL_MACHINE\SOFTWARE\skin
    HKEY_LOCAL_MACHINE\Software\Dpi
    HKEY_LOCAL_MACHINE\SOFTWARE\vmss
    HKEY_ALL_USERS\Software\Dvx  
    HKEY_ALL_USERS\Software\Tat
    HKEY_ALL_USERS\Software\Pcsv
    HKEY_ALL_USERS\SOFTWARE\Mvu
    HKEY_ALL_USERS\SOFTWARE\picsvr
    HKEY_ALL_USERS\Software\skin
    HKEY_ALL_USERS\Software\DelFin
    HKEY_CURRENT_USER\Software\DelFin


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. Uninstall the security risk
  3. Update the virus definitions.
  4. Run a full system scan and delete all the files detected.
  5. 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 uninstall the security risk
This security risk includes an uninstallation applet. In order to uninstall this security risk, complete the following instructions:
  1. Click Start > Settings > Control Panel or Start > Control Panel (this varies with the operating system).

  2. In the Control Panel window, double-click Add/Remove Programs.

    Windows Me only: If you do not see the Add/Remove Programs icon, click ...view all Control Panel options.

  3. Click XXprogramnameXX.

    Note:
    You may need to use the scroll bar to view the whole list.

  4. Click Add/Remove, Change/Remove, or Remove (this varies with the operating system). Follow the prompts.

    Note: After running the Add/Remove programs applet, all the files may have been removed. You will want to run a full system scan to ensure that this is the case. However, it is possible that no files will be detected after using Add/Remove programs.

3. 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: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to Virus Definitions (LiveUpdate).
  • 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.


4. To scan for and delete the infected files
  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, click Delete.

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.


5. 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 the subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  5. In the right pane, delete the following values if present:

    "Dpi"
    "Tat"
    "Pcsv"
    "Nsv"
    "pgstub.exe"
    "picsvr"
    "Promulgate"
    "vmss"
    "Dvx"
    "vcmpin"

  6. Navigate to and delete the following subkeys:

    HKEY_CLASSES_ROOT\Interface\{41700749-A109-4254-AF13-BE54011E8783}
    HKEY_CLASSES_ROOT\CLSID\{D0070620-1E72-42E7-A14C-3A255AD31839}
    HKEY_CLASSES_ROOT\TypeLib\{2A7DB8D1-43BE-4AD3-A81E-9BB8C9D00073}
    HKEY_CLASSES_ROOT\Interface\{2BB15D36-43BE-4743-A3A0-3308F4B1A610}
    HKEY_CLASSES_ROOT\CLSID\{A8BD9566-9895-4FA3-918D-A51D4CD15865}
    HKEY_CLASSES_ROOT\VCCPGDATAACCESS.PgDataAccessCtrl.1
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DelFin Media Viewer
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PgTools
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PGate
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DisplayUtility
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DMVLite
    HKEY_LOCAL_MACHINE\SOFTWARE\Dvx
    HKEY_LOCAL_MACHINE\SOFTWARE\Dpi
    HKEY_LOCAL_MACHINE\SOFTWARE\Tat
    HKEY_LOCAL_MACHINE\SOFTWARE\Pcsv
    HKEY_LOCAL_MACHINE\SOFTWARE\vmss
    HKEY_LOCAL_MACHINE\SOFTWARE\Mvu
    HKEY_LOCAL_MACHINE\SOFTWARE\picsvr
    HKEY_LOCAL_MACHINE\SOFTWARE\DelFin
    HKEY_ALL_USERS\Software\Tat
    HKEY_ALL_USERS\Software\Pcsv
    HKEY_ALL_USERS\SOFTWARE\Mvu
    HKEY_ALL_USERS\SOFTWARE\picsvr
    HKEY_ALL_USERS\Software\DelFin
    HKEY_ALL_USERS\Software\Dvx
    HKEY_CURRENT_USER\Software\DelFin


f. Exit the registry editor.