Sophos

W32/Spybot-DA

Aliases
  • W32/Spybot.worm.gen.b
  • Backdoor.Spyboter.gen
Category
Type
What to do
Prevalence low high

Summary

 
Protection available since 26 July 2004 09:06:57 (GMT)
Last updated 29 September 2004 12:18:52 (GMT)
Detected by All Sophos products
  • Endpoint Security and Control 9.0
  • Small business solutions 4.0

Action

Please follow the instructions for removing worms.

Change any data that may have become compromised.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entries. The removal of these entries 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\
Windows Config = SSYS.EXE

and remove any reference to any file you deleted.

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\RunOnce\Windows Config = SSYS.EXE

and remove any reference to any file you deleted.

Close the registry editor.

More Information

W32/Spybot-DA is a network worm with backdoor Trojan functionality.

W32/Spybot-DA attempts to copy itself to SSYS.EXE in the Windows system folder and creates entries in the registry at the following locations to run itself on system restart:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Windows Config = SSYS.EXE

HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce\
Windows Config = SSYS.EXE

W32/Spybot-DA remains resident, running in the background as a service process and listening for commands from remote users via IRC channels.

W32/Spybot-DA also attempts to copy itself to the startup folder of attached network drives and can be used to record the keystrokes on the compromised machine, effectively acting as a keylogger. This worm can also be used to initiate SYNFlood attacks.

W32/Spybot-DA attempts to terminate various programs, including the following:

TASKMON
MSTASK
DUMP3-2INI
MSANTIV32
TASKMGR
NAVAPW
MMC
NAVAPW32
TASKMAN
REGEDIT
MSCONFIG
NETSTAT

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