1. Symantec/
  2. Security Response/
  3. SymbOS.Ruhag.C


Risk Level 1: Very Low

November 28, 2005
February 13, 2007 12:49:17 PM
Also Known As:
Appdisabler.I [F-Secure]
Trojan Horse
Systems Affected:

SymbOS.Ruhag.C is a Trojan horse that runs on the Symbian operating system that is used in Nokia Series 60 cellular telephones. The Trojan disables applications on the compromised device.

Symantec recommends the following to protect against this threat:
  • If Bluetooth is not required, it should be turned off.
  • If you require the use of Bluetooth, ensure that the device's visibility setting is set to "Hidden" so that it can not be scanned by other Bluetooth devices.
  • Avoid use of device pairing. If it must be used, ensure that all paired devices are set to "Unauthorized". This requires each connection request to be authorized by the user.
  • Do not accept unsigned applications (no digital signature) or applications sent from unknown sources. Be absolutely sure of the origin of the application before accepting it.

Antivirus Protection Dates

  • Initial Rapid Release version November 29, 2005
  • Latest Rapid Release version February 11, 2018 revision 021
  • Initial Daily Certified version November 29, 2005
  • Latest Daily Certified version February 12, 2018 revision 002
  • Initial Weekly Certified release date November 30, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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2016 Internet Security Threat Report, Volume 21
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