Troj/QQPass-O

Aliases	Trojan.PWS.QQPass
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	Installs itself in the registry
Included in our products from	October 2005 (3.98)
Protection available since	19 August 2005 20:51:38 (GMT)
Detected by	All Sophos products

Troj/QQPass-O is a password stealing Trojan for the Windows platform.

When first run Troj/QQPass-O copies itself to:

<Temp>\temp~2
<System>\tadxtr.exe

and creates the following files:

<System>\tadxtr.dll
<System>\temp1.jpg

Tadxtr.dll and temp1.jpg are innocuous files and may be simply deleted.

Troj/QQPass-O may try to terminate security-related processes.

The following registry entries are created to run tadxtr.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
Rnudll32
tadxtr.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
sdsr
tadxtr.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Rundli32
tadxtr.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
HKEYok
tadxtr.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Runonce
Rundil32
tadxtr.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServicesOnce
Regexit
tadxtr.exe

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