W32.Sober.K@mm

Risk Level 2: Low

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Discovered:: February 20, 2005
Updated:: February 13, 2007 12:33:47 PM
Also Known As:: Sober.K [Computer Associates], Sober.K [F-Secure], Email-Worm.Win32.Sober.k [Kasp, W32/Sober.l@MM [McAfee], W32/Sober.K@mm [Norman], Sober.M [Panda Software], W32/Sober-K [Sophos], WORM_SOBER.K [Trend Micro]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Sober.K@mm is a mass-mailing worm that uses its own SMTP engine to send itself to email addresses gathered from a compromised computer. The email will be in either English or German.

Antivirus Protection Dates

Initial Rapid Release version February 21, 2005
Latest Rapid Release version November 17, 2011 revision 017
Initial Daily Certified version February 21, 2005
Latest Daily Certified version November 17, 2011 revision 018
Initial Weekly Certified release date February 21, 2005

Click 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: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: High

Writeup By: Asuka Yamamoto

Technical Details

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Internet Security Threat Report, Volume 16