1. Symantec/
  2. Security Response/
  3. SymbOS.Locknut


Risk Level 1: Very Low

February 2, 2005
February 13, 2007 12:32:47 PM
Also Known As:
Locknut.A [F-Secure], SYMBOS_LOCKNUT.A [Trend Micro], SYMBOS_LOCKNUT.B [Trend Micro]
Trojan Horse
Systems Affected:

SymbOS.Locknut is a Trojan horse program that uses a vulnerability to cause devices running Symbian OS v7.0s to crash. A minor variant of this Trojan also installs a version of SymbOS.Cabir or SymbOS.Cabir.B on the compromised device.

Antivirus Protection Dates

  • Initial Rapid Release version February 2, 2005
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version February 2, 2005
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date February 2, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Robert X Wang

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2016 Internet Security Threat Report, Volume 21
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