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- Discovered:
- July 19, 2004
- Updated:
- February 13, 2007 12:25:29 PM
- Also Known As:
- W32/Mydoom.n@MM [McAfee], WORM_MYDOOM.L [Trend], W32/MyDoom-N [Sophos], I-Worm.Mydoom.l [Kaspersky], Win32.Mydoom.N [Computer Assoc
- Type:
- Worm
- Systems Affected:
- Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
The W32.Mydoom.L@mm mass-mailing worm:
- Uses its own SMTP engine to send itself to all the email addresses that it finds from an infected system.
The email has an attachment with a .bat, .cmd, .com, .exe, .pif, .scr, or .zip extension. - The attachment name may contain a randomly selected domain, which was found on the sender's system. For example, the attachment name could contain fakedomain.com if the address x@fakedomain.com was harvested.
- Contains keylogging capabilities. The From field of the email is spoofed.
- Acts as a backdoor on infected systems.
- Is written in C++ and is packed with UPX.
Note: Virus definitions 60719am (extended version July 19, 2004, rev. 39) and earlier, released on July 19, 2004, detect this threat as W32.Beagle.AF@mm.
Antivirus Protection Dates
- Initial Rapid Release version July 19, 2004
- Latest Rapid Release version April 11, 2011 revision 004
- Initial Daily Certified version July 19, 2004
- Latest Daily Certified version April 11, 2011 revision 021
- Initial Weekly Certified release date July 19, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
- Wild Level: Medium
- 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: Yana Liu
