Summary
Trojan:SymbOS/Cardtrap.AF tries to disable system applications and third party products, and also installs additional malware onto the device.
Removal
F-Secure Mobile Anti-Virus is capable of detecting Cardtrap.AF with generic detection, so if the phone has functional Anti-Virus installed, Cardtrap.AF is blocked before it can be installed.
Disinfection with two Series 60 phones
Use the F-Skulls utility to allow for installation of F-Secure Mobile Anti-Virus. Download the F-Skulls tool from [link removed] or directly to a clean phone from [link removed].
- Install F-Skulls.sis onto the infected phone's memory card with a clean phone
- Put the memory card with the F-Skulls tool into the infected phone
- Start up the infected phone and the application installer should now work
- Go to the application manager and uninstall the SIS file in which you installed the malware
- Download F-Secure Mobile Anti-Virus from https://phoneav.com and activate the Anti-Virus
- Scan the phone and remove any remaining components of the malware
- Remove the F-Skulls tool with the application manager as the phone should now be clean
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 updatesFirst, check if your F-Secure security program is using the latest updates, then try scanning the file again.
- Submit a sampleAfter 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 scanningIf 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
Execution
- Trojan:SymbOS/Blankfont.A
- Trojan:SymbOS/Singlejump.A
- W32/Generic.worm!p2p
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