Troj/Haxdoor-BS

Category	Viruses and Spyware
Type	Trojan
What to do	If you've received an alert for a virus or spyware, then follow the instructions for removing the threat.
Prevalence	low high

Summary


Affected operating systems	Windows
Characteristics	Drops more malware Installs itself in the registry
Included in our products from	June 2006 (4.06)
Protection available since	26 April 2006 08:00:02 (GMT)
Detected by	All Sophos products

Troj/Haxdoor-BS is a Trojan for the Windows platform.

When Troj/Haxdoor-BS is installed the following files are created:

<System>\ddirectxt.sys
<System>\ddirectz.dll

The file ddirectxt.sys is detected as Troj/Haxdor-Gen and the file ddirectz.dll is detected as Troj/Haxdor-Fam.

The following registry entries are created to run code exported by ddirectz.dll on startup:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\ddirectz
DllName
ddirectz.dll

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\ddirectz
Startup
ddirectz

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\ddirectz
Impersonate
1

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