Sophos

W32/Scaerbot-A

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from April 2005 (3.92)
Protection available since 21 January 2005 10:33:00 (GMT)
Last updated 27 February 2005 12:07:00 (GMT)
Detected by All Sophos products

Action

Please follow the instructions for removing worms.

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\
NT Virtual Machine
"<Path to EXE>"

and delete it if it exists.

Close the registry editor.

More Information

W32/Scaerbot-A is a network worm with backdoor Trojan functionality for the Windows platform.

W32/Scaerbot-A creates the following registry entry in order to run each time a user logs on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
NT Virtual Machine
"<Path to EXE>"

The worm is capable of spreading through network shares and through backdoors left open by other malware.

W32/Scaerbot-A joins a predefined IRC channel and awaits further commands from a remote user.

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