1. Symantec/
  2. Security Response/
  3. W32.Dinfor.Worm


Risk Level 1: Very Low

February 6, 2004
February 13, 2007 12:17:07 PM
Also Known As:
Systems Affected:

W32.Dinfor.Worm is a worm that spreads across network shares. It exploits weak passwords and uses the DCOM RPC vulnerability (described in Microsoft Security Bulletin MS03-039) to create user accounts on remote computers. This worm also acts as a backdoor, connecting to an IRC channel and allowing a remote attacker to control an infected computer.

Antivirus Protection Dates

  • Initial Rapid Release version February 6, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version February 6, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date February 9, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Fergal Ladley

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2016 Internet Security Threat Report, Volume 21
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