Sophos

W32/VBLame-G

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Removable storage devices
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from February 2008 (4.26)
Protection available since 18 December 2007 12:14:34 (GMT)
Last updated 18 December 2007 18:48:08 (GMT)
Detected by All Sophos products

Action

More Information

W32/VBLame-G is a worm for the Windows platform.

When first run W32/VBLame-G copies itself to:

<Windows>\Fonts\Verdana.dll
<Windows>\Web\GnSalak.exe
<System>\himem32.sys
<Windows>\Help\Help.exe

and creates the files:

<Temp>\Bogor.vbs
<Windows>\config.ini
<Windows>\dayeuh.txt
<Windows>\system.exe
<Windows>\system.txt
<System>\wuapi32.dll

Each of these files are also detected as W32\VBLame-G.

The following harmless files are created:

<Root>\bkbZSOxr.txt
<Windows>\kujang.jpg
<System>\deskjet.dll
<System>\printer.dll
<System>\wtask.dll
<Root>\zdxjivox.txt

W32\VBLame-G will copy itself to the root of various drives using the name "Tunggul.vbs".

The following registry entries are changed to run system.exe on startup:

HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe "<Windows>\system.exe"

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe "<Windows>\system.exe"

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Pantun Pa Cilong <Windows>\dayeuh.exe

W32\VBLame-G changes settings for Microsoft Internet Explorer by modifying values under:

HKCU\Software\Microsoft\Internet Explorer\Main

Registry entries are set as follows:

HKCU\Control Panel\Desktop
Wallpaper
<Windows>\kujang.jpg

HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\AlternateShell
"cmd.exe <Windows>\system.exe"

Registry entries are created under:

HKCR\Drive\shell\eeinA
HKCR\Drive\shell\luggnuT
HKCR\Drive\shell\ynnaH

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