Threat Descriptons



Category :


Type :


Platform :


Aliases :

Trojan:SymbOS/Singlejump.A, SymbOS/Singlejump.A


Trojan:SymbOS/Singlejump.A affects devices running the Symbian S60 operating system. It is distributed in a malicious SIS file named 'PhotoID.v3.06_NEW_7610_3230_6630_SMPDA.sis'.

On execution, the trojan installs small component into locations where it replaces system and third party applications; if these applications are launched, the component resets the device.

Singlejump.A also installs a modified Bluetooth-Worm:SymbOS/Cabir variant that it uses to spread Trojan:SymbOS/Bootton.A to nearby Bluetooth-accessible devices; the modified Cabir is not started automatically but will start when device boots.


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


On execution, Singlejump.A replaces built in and third party applications with component that causes device to reboot when executed.

It also uses a Cabir variant that is modified so that instead of sending a copy of itself, the worm loads a specified SIS file (which is installed by Singlejump.A to a location where Cabir expects to find its own file) and starts sending it. In this case, the specified file is a copy of Trojan:SymbOS/Bootton.A.

The modified Cabir worm that Singlejump.A uses is based on Cabir.B and maintains the same replication flaw; thus, it is only capable of sending SymbOS/Bootton.A to the first phone it finds after reboot.

This trojan contains this message:

 Saying HELLO From Here (SYRIA)
TO All The WORLD !!!
I Wish U N-Joy UR
 Damaged Device ..
U Know, Not all may Read These Words But,
 No Problem Bcuz Some will,
 But even This, Thats The Way I Love U All ...

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