high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
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| Included in our products from | October 2005 (3.98) |
| Protection available since | 11 August 2005 05:03:50 (GMT) |
| Last updated | 17 August 2005 18:11:39 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing Trojans.
More Information
Troj/Psupda-A is a downloader Trojan which will download, install and run new software without notification that it is doing so.
Troj/Psupda-A includes functionality to inject its code into SVCHOST.EXE.
When Troj/Psupda-A is installed the following files are created and run:
<System>\Ywvpysxl.d1l
<System>\drivers\Ywvpysxl.sys
The file Ywvpysxl.d1l is detected as Troj/Psupda-A.
The file Ywvpysxl.sys is detected as Troj/RKProc-B.
The file Ywvpysxl.sys is registered as a new hidden system driver service named "Ywvpysxl" with a display name of "Ywvpysxl" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\Ywvpysxl\
Troj/Psupda-A then uses the system driver service to stealth itself.
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