Sophos

Troj/Asb-A

Aliases
  • Trojan-Downloader.Win32.Small.lh
  • Download.Trojan
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 21 February 2006 04:59:48 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/Asb-A is a backdoor Trojan which allows a remote intruder to gain access and control over the computer.

Troj/Asb-A includes functionality to:
- send notification messages to remote locations
- download files via HTTP without user notification
- log keystrokes and send the logged information to a remote location
- open/close CD drives

When Troj/Asb-A is installed the following files are created:

<Temp>\mswinsck.ocx - this file may be deleted
<Windows>\of.sys - this file may be deleted
<Windows>\win.exe - also detected as Troj/Asb-A
<Temp>\pic04.exe - also detected as Troj/Asb-A

The following registry entry is created to run win.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
WinLoad
<Windows>\win.exe

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