Sophos

Troj/VB-DZO

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 12 May 2008 07:02:18 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/VB-DZO is a Trojan for the Windows platform.

When first run Troj/VB-DZO copies itself to <Windows>\Config\csrss.exe and creates the file <System>\mswinsck.ocx. The file mswinsck.ocx is not malicious.

The following registry entry is changed to run Troj/VB-DZO on startup:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe <Windows>\Config\csrss.exe

The file mswinsck.ocx is registered as a COM object, creating registry entries under:

HKCR\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
HKCR\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
HKCR\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}
HKCR\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
HKCR\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}

Registry entries are set as follows:

HKCR\MSWinsock.Winsock.1\CLSID
(default)
{248DD896-BB45-11CF-9ABC-0080C7E7B78D}

HKCR\MSWinsock.Winsock\CLSID
(default)
{248DD896-BB45-11CF-9ABC-0080C7E7B78D}

Registry entries are created under:

HKCR\MSWinsock.Winsock

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