Sophos

Troj/Domcom-D

Aliases
  • TROJ_SILLYDL.B
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from June 2005 (3.94)
Protection available since 8 April 2005 08:23:55 (GMT)
Detected by All Sophos products

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
loader32
<Path to Self>

and delete it if it exists.

Close the registry editor.

More Information

Troj/Domcom-D is a downloading Trojan.

The Trojan downloads configuration data from a predetermined website to a file TASK32.DAT in the Windows folder. The Trojan then downloads and runs further malware from addresses contained in this data.

Troj/Domcom-D drops a component of itself in the Windows folder as LOADER_EXE.DLL and creates the following registry in order to run itself on system startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
loader32
<Path to Self>

Troj/Domcom-D may also set keys under the following registry entries:

HKCU\Software\Down\

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\WindowsUpdate
loader32

HKLM\SYSTEM\CurrentControlSet\Control\Session Manager
PendingFileRenameOperation

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