Sophos

Troj/LowZone-I

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Included in our products from March 2005 (3.91)
Protection available since 25 January 2005 23:14:46 (GMT)
Detected by All Sophos products

Action

Please follow the instructions for removing Trojans.

You should also check your Internet Explorer settings using Tools|Internet options|General for any modifications made by the Trojan.

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\
USBHWINFO =
<path to Trojan>

and delete it if it exists.

Close the registry editor.

More Information

Troj/LowZone-I is a Trojan for the Windows platform.

When run, Troj/LowZone-I will reduce the security settings of Internet Explorer by modifying registry entries under the following entry:

HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3

The Trojan will then attempt to connect to a web page with Internet Explorer.

Troj/LowZone-I creates the following registry entry to run itself automatically on computer log-on:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
USBHWINFO =
<path to Trojan>

Troj/LowZone-I will attempt to create another file named "installer.exe" which is detected by Sophos Anti-virus as Troj/Agent-DN. The Trojan will also try and create the clean file named "mt-uninstaller.exe".

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