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  3. W32.Ganda.A@mm


Risk Level 2: Low

March 17, 2003
February 13, 2007 11:44:32 AM
Also Known As:
W32/Ganda@MM [McAfee], Ganda [F-Secure], Win32/Ganda.A@mm [RAV], W32/Ganda.A@mm [Norman], Win32.Ganda.A [CA], W32/Ganda-A [Sophos], PE_GANDA.A [Trend], I-Worm.Ganda [KAV]
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Ganda.A@mm is a mass-mailing worm that sends email to the contacts in the Windows Address Book. The worm contains its own SMTP engine and attempts to use the computer's default SMTP server, or an open mail server in Sweden, for email propagation.

W32.Ganda.A@mm sends two email messages with the following characteristics, in Swedish or English, depending on the infected systems' language:

  • Olaglig_skärmsläckare?
  • Rashets eller inte?
  • Hakkors.
  • Suspekta semaforer.
  • Avskyvärd_reklam.
  • Överviktiga_förnedras.
  • Go ack ack ack....
  • Är_USA_ett_UFO?
  • Korkad president.
  • Katt, hund, kanin.
  • Screensaver advice.
  • Spy pics.
  • GO USA !!!!
  • G.W Bush animation.
  • Is USA a UFO?
  • Is USA always number one?
  • LINUX.
  • Nazi propaganda?
  • Catlover.
  • Disgusting propaganda.

Attachment: [a-z][a-z].scr

The worm also attempts to terminate the services of several antivirus and security products.

This worm appears to have originated in Sweden.

Antivirus Protection Dates

  • Initial Rapid Release version March 17, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version March 17, 2003 revision 004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date March 19, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 50 - 999
  • Number of Sites: More than 10
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate


  • Damage Level: Medium


  • 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: Brian Ewell

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