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W32.Mytob.AH@mm

Risk Level 2: Low

Discovered:
April 9, 2005
Updated:
February 13, 2007 12:36:41 PM
Also Known As:
Win32.Mytob.{AF, AL, BH-BJ, BQ, BT, CA, CB, DH, DP, EH} [Computer Associates], Net-Worm.Win32.Mytob.{h, i, m, t, x, ai, gen} [Kaspersky Lab], W32/Mytob.{h, m, t, ag, aw, gen}@MM [McAfee], W32/Mytob-{E, F, I, N, AH, AK, AO, BW, BX, Fam} [Sophos], WORM_MYTOB.{AD, AJ, AQ, BF, BJ, BT, BW, BX, BZ, CB, CL, EY, EZ} [Trend Micro]
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Mytob.AH@mm is a mass-mailing worm that uses its own SMTP engine to send an email to addresses that it gathers from the compromised computer.
The worm spreads by exploiting the DCOM RPC vulnerability (described in Microsoft Security Bulletin MS03-026) and the Microsoft Windows Local Security Authority Service Remote Buffer Overflow (described in Microsoft Security Bulletin MS04-011).

Antivirus Protection Dates

  • Initial Rapid Release version April 10, 2005
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version April 10, 2005
  • Latest Daily Certified version July 10, 2013 revision 002
  • Initial Weekly Certified release date April 13, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

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

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: High
Writeup By: Hatsuho Honda

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