Summary
Trojan:SymbOS/Doomboot.Q installs corrupted system binary files, which then cause the phone to crash at the next reboot.
Removal
F-Secure Mobile Security will detect and disinfect Doomboot.Q
Remove the SIS file in which the Doomboot.Q was installed
Open web browser on the phone
Go to http://phoneav.com
Select link "Download antivirus software for your smartphone" and then
Select phone model
Download the file and select open after download
Install F-Secure Mobile Anti-Virus
Go to applications menu and start Anti-Virus
Activate Anti-Virus and scan all files
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/Doomboot.Q affects devices running the Symbian S60 operating system. It is distributed in a malicious SIS file and when executed, installs corrupted system binary files. If the device is rebooted, on startup it will load the corrupted binaries, which then cause the phone to crash. Technically, Doomboot.Q is very similar to the previously released variant, Trojan:SymbOS/Doomboot.C.
Note: If the device has been infected with Doomboot.Q, it is important not to restart it before disinfection has been completed. Follow the disinfection instructions below. If the device has been rebooted and will not start again, it may be recovered with teh hard format key code that is entered during the phone's startup.
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.