Summary

Summary
Action
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| Affected operating systems | Windows |
|---|---|
| Characteristics |
|
| Protection available since | 17 April 2007 07:06:21 (GMT) |
| Detected by | All Sophos products |
- Free virus, spyware, and adware scan
- Test your existing anti-virus protection
- Find threats your anti-virus missed
Action

Summary
Action
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Please follow the instructions for removing Trojans.
More Information
Troj/Bckdr-QHO is a Trojan for the Windows platform.
When Troj/Bckdr-QHO is installed the following files are created:
<System>\ntio256.sys
<System>\protector.exe
The file ntio256.sys is detected as Troj/Agent-EYS.
The file protector.exe is also detected as Troj/Bckdr-QHO and includes functionality to access the internet and communicate with a remote server via HTTP.
The file ntio256.sys is registered as a new system driver service named "ntio256", with a display name of "Input and output operations" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\ntio256
HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_NTIO256

