Sophos

Troj/Agent-JK

Aliases
  • Trojan-Dropper.Win32.Agent.tb
  • TROJ_DLOADER.ALW
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Protection available since 29 December 2005 02:21:27 (GMT)
Last updated 7 January 2006 06:14:00 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/Agent-JK is a Trojan for the Windows platform.

When Troj/Agent-JK is installed the following files are created:

<Windows>\<filename1>.exe
<Windows>\jptc.dat
<Windows>\offun.exe
<Windows>\<filename2>.exe

The two files with randomly generated file names are detected as Troj/Clicker-AI.

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
<filename1>
<Windows>\<filename1>.exe

The file <filename2>.exe is registered as a new system driver service named "Windows Overlay Components", with a display name of "Windows Overlay Components" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\Windows Overlay Components\

Registry entries are created under:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\OvMon\

Troj/Agent-JK provides an uninstall option which can be accessed via the Add or Remove Programs dialog in the Windows Control Panel. The software is listed as "Windows Overlay Components".

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