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- Discovered:
- April 3, 2004
- Updated:
- February 13, 2007 12:20:46 PM
- Also Known As:
- W32/Sober.f@MM [McAfee], Win32.Sober.F [Computer Associ, W32/Sober-F [Sophos], WORM_SOBER.F [Trend]
- Type:
- Worm
- Systems Affected:
- Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
As of April 11, 2004, due to a decrease in submission rate, Symantec Security Response has downgraded this threat from a Category 3 to a Category 2 rating.
W32.Sober.F@mm is a variant of W32.Sober.E@mm, which spreads itself as an email attachment.
The Subject: and Body: of the email vary and are written in German or English.
Notes:
- Symantec Consumer products that support the Worm Blocking functionality automatically detect this threat as it attempts to spread.
- The worm does not have a static MD5 hash value.
W32.Sober.F@mm is written in Microsoft Visual Basic and is packed with UPX.
Antivirus Protection Dates
- Initial Rapid Release version April 4, 2004
- Latest Rapid Release version November 13, 2007 revision 038
- Initial Daily Certified version April 4, 2004
- Latest Daily Certified version January 15, 2008 revision 016
- Initial Weekly Certified release date April 4, 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: Kaoru Hayashi
