Threat Explorer

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13 February 2007
Risk Impact:
File Names:
Systems Affected:


Adware.OMI is an adware program that downloads and displays advertisements.


The files on the system are detected as Adware.OMI.
  • Outgoing connections to
  • Numerous pop-up advertisements are displayed when you connect to the Internet.


This adware must be manually installed.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 06 November 2019 revision 024
  • Initial Daily Certified version 03 December 2003
  • Latest Daily Certified version 04 November 2019 revision 050
  • Initial Weekly Certified release date 03 December 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.OMI runs, it performs the following actions:
  1. Drops randomly named files to the %Temp% folder.

    Note: %Temp% is a variable. The adware locates the temporary folder and copies itself to that location. By default, this is C:\Windows\TEMP (Windows 95/98/Me), or C:\WINNT\Temp (Windows NT/2000), or C:\Document and Settings\<UserName>\Local Settings\Temp (Windows XP).

  2. Attempts to download and display advertisements while browsing the Internet.

  3. Periodically checks for version updates from a predetermined Web site.

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.
  1. Update the definitions.
  2. Run a full system scan and delete all the files detected as Adware.OMI.

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

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

2. Scanning for and deleting the 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 Adware.OMI, click Delete.

    Note: If your Symantec antivirus product reports that it cannot delete a detected file, write down the path and file names. Then use Windows Explorer to locate and delete the file.