Sophos

Troj/Zonit-E

Aliases
  • Trojan-Proxy.Win32.DiskMaster.gen
  • W32/Zonit.gen
  • BKDR_DISTER.F
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 10 March 2005 09:29:20 (GMT)
Detected by All Sophos products
  • Free virus, spyware, and adware scan
  • Test your existing anti-virus protection
  • Find threats your anti-virus missed

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 for each user who ran the virus. 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.

Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:

HKU\[code number]\Software\Microsoft\Windows\CurrentVersion\Run\
Floppy Master
<path to file>

and delete it if it exists.

Close the registry editor.

More Information

Troj/Zonit-E is a backdoor Trojan.

In order to run each time a user logs on, Troj/Zonit-E sets the following registry entry:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Floppy Master
<path to file>

Troj/Zonit-E is used to forward spam from an infected computer.

The Trojan will attempt to connect to other computers to obtain configuration information for sending spam email. The Trojan attempts to contact other computers by generating random IPs and port numbers and using the current time and date to generate URLs in this form:

http://<IP>:<PORT>/<YEAR>/<MONTH>/<DAY>/<HOUR>/<MINUTE>/<SECOND>/

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