Troj/Stex-A

Aliases	TROJ_DLOADER.ESG
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	January 2007 (4.13)
Protection available since	10 November 2006 21:53:18 (GMT)
Detected by	All Sophos products

Troj/Stex-A is a Trojan for the Windows platform.

When run, Troj/Stex-A copies itself into the system folder as iexplorer.exe. The following Registry entry is added to hook system startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
iexplorer
<Windows system folder>\iexplorer.exe

Once running, Troj/Stex-A stealths its presence. The iexplorer.exe process, Registry startup hook and iexplorer.exe file on disk are all stealthed.

Troj/Stex-A contains functionality to connect to a remote server via HTTP and download other files.

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