Summary
Trojan:SymbOS/Cardtrap.AA attempts to key system applications and third party products by installing several damaged files to the phone memory.
Removal
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
The trojan is distributed in a malicious SIS file with the name 'The Two Thrones-GAMELOFT.sis'. It is also able to install a worm on the phone's Multimedia Card (MMC).
F-Secure Mobile Anti-Virus is capable of detecting Cardtrap.AA with generic detection, so if phone has functional Anti-Virus installed the Cardtrap.AA is blocked before it can be installed.
Execution
On execution, Cardtrap.AA installs files from following Symbian malware:
- SymbOS/Skulls.A
- SymbOS/Blankfont.A
and tries to disable following system applications:
- Application installer
- Application manager
- Browser
- File manager
- Bluetooth manager
The trojan also drops the following malware to device C: drive:
- Trojan.BAT.KillAV.cg
- Trojan-Dropper.Win32.QuickBatch.e
Payload
Cardtrap.AA installs following Windows malware:
- Email-Worm.BAT.BWG.d
to the phone MMC card. The worm is installed with filename, icon and shortcut link that tries to fool user into clicking them.
Protect your devices from malware with F‑Secure Total
Protecting your devices from malicious software is essential for maintaining online security. F‑Secure Total makes this easy, helping you to secure your devices in a brilliantly simple way.
Award‑winning antivirus and malware protection
Online browsing, banking, and shopping protection
24/7 online identity and data breach monitoring
Unlimited VPN service to safeguard your privacy
Password manager with private data protection
Choose how many devices you want to protect to get started.
Free customer support
Cancel anytime
The trial does not obligate you to buy the product
After 30 days your subscription will renew automatically for one year at €69.99.
More Support
Community
Ask questions in our Community.
User guides
Check the user guide for instructions.
Contact Support
Chat with with or call an agent.
Submit a Sample
Submit a file or URL for analysis.
)
)