Unlock.A

Classification

Riskware

Exploit

SymbOS

Unlock.A, Unlock.A

Summary

Unlock.A is a pseudonym for a program designed to remove the Phone Lock protection of some Symbian OS phones. The program was successfully tested on a Nokia 6680. Unlock.A should work on most Symbian based mobile phones.

Automatic action

F-Secure Mobile Anti-Virus detects this malware starting from the update build number 109.

Suspect a file is incorrectly detected (a False Positive)?

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 detection database updates, then try scanning the file again.

  • Submit a sample

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    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.

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Submit a sample

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Technical Details

This utility software bypasses the phone locking mechanism by using a Symbian OS bootstrap component feature. Unlock.A is copied to a MMC card in a system folder. When the MMC card containing this software is inserted into a phone with the phone lock enabled, this software overwrites the phone lock information disabling the phone lock and in the process also loses some localization information.The software is not malicious by itself. Its purpose is dependent on the intention of its user.This utility software functions on mobile phones with Symbian OS based on EKA1.