1. Symantec/
  2. Security Response/
  3. W32.HLLW.Fizzer@mm


Risk Level 2: Low

May 8, 2003
February 13, 2007 12:01:11 PM
Also Known As:
W32/Fizzer@MM [McAfee], Win32.Fizzer [CA], W32/Fizzer-A [Sophos], WORM_FIZZER.A [Trend], Fizzer [F-Secure], Win32/Fizzer.A@mm [RAV], I-Worm.Fizzer [KAV]
Systems Affected:

The W32.HLLW.Fizzer@mm:
  • Is a mass-mailing worm that sends itself to all the contacts in the Windows Address Book.
  • Contains a backdoor capability that uses mIRC to communicate with a remote attacker.
  • Also contains a keylogger and attempts to spread through the KaZaA file-sharing network.
  • Attempts to terminate the processes of various antivirus programs if they are found to be active.

NOTE: Virus definitions dated May 9, 2003 were posted as LiveUpdate definitions on May 12, 2003 in response to the upgrade.

Antivirus Protection Dates

  • Initial Rapid Release version May 9, 2003
  • Latest Rapid Release version November 16, 2017 revision 050
  • Initial Daily Certified version May 9, 2003
  • Latest Daily Certified version November 17, 2017 revision 001
  • Initial Weekly Certified release date May 9, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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