Threat Descriptons



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Trojan:SymbOS/Romride.A installs a malfunctioning system configuration file.


CAUTION This method will remove all data on the device, including calendar and phone numbers.

  • Power off the phone
  • Hold the following three buttons down - "answer call" + "*" + "3"
  • Keep holding down the buttons and power on the phone
  • Depending on the model, you will either get text that reads "formatting" or a start-up dialog that asks for the initial phone settings
  • Your phone is now formatted and can be used again

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

Trojan:SymbOS/Romride.A is a malicious SIS trojan that installs malfunctioning system configuration components that cause different behavior depending on the ROM software version on the device.

If the phone is rebooted and subsequently will not start again, it can be recovered with a hard format key code entered at boot.


The SIS trojan is distributed in a file named "Nokia Live.sis".

Romride.A installs a malfunctioning system configuration files into the C: drive of the phone.


Romride.A causes different effects depending on the version of the ROM software on the device. Effects witnessed vary from start up failure, to no apparent effect at all.

Shortly after the device infected with SymbOS/Romride.A restarts, it shows a notification similar to the picture below:

When this notification is displayed the only working function on the device is the option to power-off.

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