Troj/Bdoor-CPK

Aliases	BackDoor-CPK trojan
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	May 2005 (3.93)
Protection available since	30 March 2005 21:32:56 (GMT)
Detected by	All Sophos products

Troj/Bdoor-CPK is a backdoor Trojan.

When run, Troj/Bdoor-CPK will drop a DLL with an extension of DAT. The DLL file is also detected as Troj/Bdoor-CPK.

In order to run automatically each time Internet Explorer is started, Troj/Bdoor-CPK sets the following registry entries:

HKCR\CLSID\{1C044AAD-7955-4cbd-8175-501A165C4E5D}\InprocServer32
(default)
<path to Trojan DLL>

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1C044AAD-7955-4cbd-8175-501A165C4E5D}

In order to run automatically each time the computer starts or shuts down, Troj/Bdoor-CPK will set the following registry entries:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\<Trojan filename>
Asynchronous
1

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\<Trojan filename>
DllName
<path to Trojan DLL>

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\<Trojan filename>
Logon
MachineLogon

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\<Trojan filename>
Logoff
MachineLogoff

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