Sophos

W32/Traxg-H

Aliases
  • W32/Generic.m
  • W32.Traxg@mm
  • Email-Worm.Win32.VB.bk
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Email attachments
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from April 2006 (4.04)
Protection available since 15 February 2006 18:14:31 (GMT)
Detected by All Sophos products

Action

More Information

W32/Traxg-H is a mass-mailing worm for the Windows platform which also spreads by copying itself to network shares.

W32/Traxg-H sends emails with itself as an attachment to addresses found in the Outlook Express address book.

W32/Traxg-H may copy itself as a random filename to any of the following folders:

\fonts
\help
\system
\temp
\web

W32/Traxg-H may display a fake error message box containing the following text:

Warning
This Folder Has Been Damage!

The worm may create the files C:\FOLDER.HTT and nethood.htm, also detected as W32/Traxg-H. This file exploits the "Microsoft VM ActiveX Component" vulnerabilty, associated with certain versions of Microsoft Internet Explorer, to run further executable code. This vulnerability allows an HTML-based script to access the file system or registry without any of the usual security restrictions placed on ActiveX controls. For further information see Microsoft security bulletin MS00-075.

W32/Traxg-H may also create network shares for local files and folders. When spreading through networks, W32/Traxg-H typically uses the filename WINDOWS.EXE.

When first run W32/Traxg-H copies itself to <Windows folder>\fonts\8746d.com.

The following registry entry is created to run 8746d.com on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
TempCom
<Windows folder>\FONTS\8746D.com

Registry entries are set as follows:

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Hidden
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
HideFileExt
1

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