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- Discovered:
- April 20, 2004
- Updated:
- February 13, 2007 12:21:39 PM
- Also Known As:
- WORM_MIMAIL.V [Trend], W32/Mimail-V [Sophos], JS.Mimail.V [Computer Associat
- Type:
- Worm
- Systems Affected:
- Windows 2000, Windows NT, Windows Server 2003, Windows XP
W32.Opasa@mm is a mass-mailing worm that:
- Sends itself to the email addresses that it finds on an infected computer
- Terminates processes and services, including various security programs
- Attempts to connect to various IRC servers to wait for additional commands from an attacker.
The email contains a .zip attachment, and the Subject line varies.
Antivirus Protection Dates
- Initial Rapid Release version April 20, 2004
- Latest Rapid Release version September 28, 2010 revision 054
- Initial Daily Certified version April 20, 2004
- Latest Daily Certified version September 28, 2010 revision 036
- Initial Weekly Certified release date April 20, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
- Wild Level: Low
- Number of Infections: 0 - 49
- Number of Sites: 3 - 9
- Geographical Distribution: Low
- Threat Containment: Easy
- Removal: Moderate
Damage
- Damage Level: Medium
Distribution
- Distribution Level: High
Writeup By: Robert X Wang
