Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
Sending a sample to F-Secure Labs
As hidden items are often related to malware, we ask that you consider sending us a sample of the hidden files to F-Secure Labs via the Submit A Sample (SAS) page for further analysis.
Since the files are hidden, you might not be able to access them directly. To access the files, you might need to do one of the following:
- Start your computer in safe mode. In safe mode, the files may become visible. To do so, you may need to refer to the relevant Microsoft documentation for your specific operating system version.
- Rename the files. After renaming the files and restarting the computer, the files may become visible. In some cases, the computer must be started in safe mode after renaming for it to be successful.
- Reboot your system using Windows Recovery Console. The files should be accessible when using the Recovery Console.
Alternatively, if the hidden files are related to the Master Boot Record (MBR), you may use the following instructions:
Manual repair of the Master Boot Record (MBR)
Caution: Manual disinfection of the MBR is only advisable for advanced users.
Microsoft provides tools to replace an infected MBR with a copy of the original, clean MBR. To do so:
- Boot into the Recovery Console.
- Depending on the operating system in question, run the appropriate command on all infected drives:
- On Windows XP, run:fixmbr
- On Windows 7, run:bootrec
Note: For further information on use of the 'fixmbr' command, please refer to the relevant Microsoft documentation.