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.