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Updated: February 13, 2007 11:35:52 AM
Type: Adware
Version: 1.00
Publisher: Dynamic Desktop Media
Risk Impact: High
File Names: sysu.exe
Systems Affected: Windows


Adware.DynamicUpdater is an adware program that can be downloaded by Adware.Dynamic .


Files are detected as Adware.DynamicUpdater.


This adware program must be installed manually or as a component of another program.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version October 02, 2014 revision 022
  • Initial Daily Certified version December 01, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date December 03, 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Technical Description

When Adware.DynamicUpdater is executed, it performs the following actions:

  1. Adds the value:

    "sysu" = "c:\progra~1\ddm\sysu.exe"

    to the registry key:


  2. Generates frequent pop-up advertisements.

  3. May download an executable from the Web, possibly an update of itself.


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

  1. Update the virus definitions.
  2. Delete the key that was added to the registry.
  3. Run a full system scan and delete all the files detected as Adware.DynamicUpdater.

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

2. Deleting the key from the registry

WARNING: 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, and then click Run. (The Run dialog box appears.)
  2. Type regedit

    and then click OK. (The Registry Editor opens.)
  3. Navigate to the key:

  4. Delete the value:

    "sysu" = "c:\progra~1\ddm\sysu.exe"
  5. Exit the Registry Editor.

3. Scanning for and deleting the infected files
  1. Start Norton AntiVirus and make sure that it is configured to scan all the files. For more information, read the document, "How to configure Norton AntiVirus to scan all files."
  2. Run a full system scan.
  3. If any files are detected as infected with Adware.DynamicUpdater, click Delete.