W32.Blitzdung@mm

Risk Level 1: Very Low

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Discovered:: February 12, 2003
Updated:: February 13, 2007 11:42:56 AM
Also Known As:: I-Worm.Blitzdung [KAV], WORM_BLITZDUN.A [Trend]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Blitzdung@mm is a mass-mailing worm that was originally written in Java. A converter tool was used to convert the worm to a Win32 Portable Executable (PE) file.

W32.Blitzdung@mm attempts to send a copy of itself to all the contacts found in the Yahoo! Messenger log file. It can also spread through any mIRC channels that you visit.

The worm tries to copy a file infected with W32.ElKern.4926 into the Windows folder.

Refer to the W32.ElKern.4926 writeup for more information.

Antivirus Protection Dates

Initial Rapid Release version February 13, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version February 13, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date February 19, 2003

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: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Jari Kytojoki

Technical Details

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Internet Security Threat Report, Volume 16