Discovered: April 11, 2001
Updated: February 13, 2007 11:36:15 AM
Also Known As: W32/Badtrans-A [Sophos], W32/Badtrans@MM [McAfee], BadTrans, I-Worm.Badtrans [KAV], WORM_BADTRANS.A [Trend], TROJ_BADTRANS.A [Trend], Win32.Badtrans.13312 [CA], Pws-AV Trojan, W32.Badtrans.13312@mm, Trojan.Psw.Hooker
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
Due to a decreased rate of submissions, Symantec Security Response has downgraded the threat level of this worm from Category 3 to Category 2 as of May 5, 2003.
This is a MAPI worm that replies to all unread messages in your email message folders and drops a backdoor Trojan.
NOTE: Virus definitions dated prior to October 22, 2001 detected this as W32.Badtrans.13312@mm.
Protection
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Initial Rapid Release version April 11, 2001
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Latest Rapid Release version June 22, 2009 revision 066
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Initial Daily Certified version April 11, 2001
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Latest Daily Certified version June 22, 2009 revision 049
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Initial Weekly Certified release date April 11, 2001
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: 50 - 999
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Number of Sites: More than 10
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Geographical Distribution: High
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Threat Containment: Easy
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Removal: Easy
Damage
Distribution
Writeup By: Peter Ferrie