Sophos

Troj/ConHook-N

Aliases
  • Trojan-Downloader.Win32.ConHook.n
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 25 October 2005 04:44:23 (GMT)
Last updated 18 November 2005 22:02:40 (GMT)
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Action

More Information

Troj/ConHook-N is a Trojan for the Windows platform.

When Troj/ConHook-N is installed the following files are created:

<Temp>\removalfile.bat (may be safely deleted)
<System>\jkhhg.dll (also detected as Troj/Conhook-N)

The following registry entries are created to run code exported by jkhhg.dll on startup:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\jkhhg
DllName
jkhhg.dll

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\jkhhg
Impersonate
0

The file jkhhg.dll is registered as a COM object and ShellExecute hook, creating registry entries under:

HKCR\CLSID\(00DBDAC8-4691-4797-8E6A-7C6AB89BC441)
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks\(00DBDAC8-4691-4797-8E6A-7C6AB89BC441)

The Trojan may download and install additional files from a remote site.

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