Category: Viruses and Spyware
Type: Win32 worm
Prevalence: Small Number of Reports

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  • Backdoor.Rbot.gen
  • W32/Sdbot.worm.gen.g
  • W32.Spybot.Worm


  • Allows others to access the computer
  • Steals information
  • Uses its own emailing engine
  • Reduces system security
  • Records keystrokes
  • Installs itself in the registry

Affected Operating Systems


Recovery Instructions:

Please follow the instructions for removing worms.

You will also need to edit the following registry entries, if present. 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 entries:

Microsoft Updates = systemc32.exe
Microsoft Updates = systemc32.exe

and delete them if they exist.

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

HKCU\[code number]\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Updates = systemc32.exe

and delete it if it exists.

Close the registry editor.

  • Download and install the Microsoft patches mentioned. On standalone computers, update with all relevant security patches from Windows update.
  • Check your administrator passwords and review network security.

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