1. Symantec/
  2. Security Response/
  3. SymbOS.Drever.B


Risk Level 1: Very Low

March 22, 2005
February 13, 2007 12:35:51 PM
Trojan Horse
Systems Affected:

SymbOS.Drever.B is a Trojan horse that disables certain Symbian OS antivirus programs by overwriting their startup files. The antivirus program affected by this Trojan is SimWorks Anti-Virus for Symbian OS.

It has been reported that the Trojan can be downloaded as a file named Simworks_update.sis. (This Trojan may be located inside a compressed file named Simworks_update.zip.) The file appears as an update for the Symbian program, SimWorks AntiVirus Software.

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 March 25, 2005
  • Latest Rapid Release version June 15, 2017 revision 023
  • Initial Daily Certified version March 25, 2005
  • Latest Daily Certified version June 17, 2017 revision 001
  • Initial Weekly Certified release date March 25, 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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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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