1. Symantec/
  2. Security Response/
  3. W32.Mydoom.H@mm


Risk Level 2: Low

March 3, 2004
February 13, 2007 12:18:31 PM
Also Known As:
W32/Mydoom.h@MM [McAfee], Win32.Mydoom.H [Computer Assoc, WORM_MYDOOM.H [Trend]
Systems Affected:

The W32.Mydoom.H@mm worm:
  • Is a mass-mailing worm that opens a backdoor on TCP ports 80 and 1080.
  • Can download and execute arbitrary files.
  • Performs a Denial of Service (DoS) against www.symantec.com.

The worm arrives as an attachment with the file extension .bat, .com, .cmd, .exe, .pif, .scr, or .zip. The From: line of the email may be spoofed.

  • Symantec Consumer products that support Worm Blocking functionality automatically detect this threat as it attempts to spread.
  • Virus definitions version 60302u (extended version 03/02/2004 rev 21) detect this threat as W32.Mydoom.G@mm.
  • W32.Mydoom.H@mm has an MD5 hash value of 0X47CC271E765E6CDF0562E692CE805B35.

Antivirus Protection Dates

  • Initial Rapid Release version March 4, 2004
  • Latest Rapid Release version May 31, 2016 revision 036
  • Initial Daily Certified version March 4, 2004
  • Latest Daily Certified version June 1, 2016 revision 005
  • Initial Weekly Certified release date March 10, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

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