Sophos

Troj/Delf-LW

Aliases
  • Trojan.Win32.Delf.lw
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 31 August 2005 00:37:28 (GMT)
Detected by All Sophos products
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Action

Please follow the instructions for removing Trojans.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entry:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Secret
\"<System>\Secret.exe\" FormaT

and delete it if it exists.

Close the registry editor.

More Information

Troj/Delf-LW is a Trojan for the Windows platform.

When first run Troj/Delf-LW copies itself to <System>\Secret.exe.

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Secret
\"<System>\Secret.exe\" FormaT

When the computer is next rebooted and Troj/Delf-LW is launched on startup, it first disables the Task Manager, and tries to prevent a log-off or shutdown from occuring.

Troj/Delf-LW then proceeds to attempt to delete every file and folder on the entire system, while displaying a progress bar entitled "Updating System Configuration".

Once Troj/Delf-LW has finished deleting files, it displays a message saying "Yedinmi Yarraaa?".

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