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  3. W32.Frethem.A@mm


Risk Level 2: Low

June 3, 2002
February 13, 2007 11:39:08 AM
Also Known As:

W32.Frethem.A@mm is an Internet worm which uses its own SMTP engine to spread. It obtains email addresses from the Microsoft Windows Address Book and from .dbx files. It retrieves the infected computer user's SMTP server information from the registry. It then sends itself to all the email addresses that it finds in a message with the following characteristics:
Subject: Re: Do your Windows looks like Windows XP? I have found very nice desktop themes!
Attachment: www.freedesktopthemes[plus a random number].[a random extension chosen from com, .exe, .bat, or .cmd]

The size of worm is about 31 KB. It is packed with both PE-Pack and UPX.

Antivirus Protection Dates

  • Initial Rapid Release version June 4, 2002
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version June 4, 2002
  • Latest Daily Certified version May 26, 2013 revision 007
  • Initial Weekly Certified release date June 5, 2002
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low


  • Distribution Level: High
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Yana Liu

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