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Risk Level 1: Very Low

July 6, 2006
February 13, 2007 12:57:20 PM
Also Known As:
Cabir.AF [F-Secure]
Systems Affected:
Symbian OS

SymbOS.Cabir.X is a worm that runs on the Symbian OS, which is used as the operating system for Nokia Series 60 cellular telephones. The worm spreads through Bluetooth-enabled devices.

The device displays a message similar to the following, asking the user to accept a message from a particular device:

Receive message via Bluetooth from [device name]?

When a user opens the file, the phone installer will display a dialog to warn users that the application may be coming from an untrusted source and may cause potential problems.

Antivirus Protection Dates

  • Initial Rapid Release version July 6, 2006
  • Latest Rapid Release version March 5, 2008 revision 053
  • Initial Daily Certified version July 6, 2006
  • Latest Daily Certified version March 5, 2008 revision 054
  • Initial Weekly Certified release date July 12, 2006
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Yana Liu

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