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Category: Malware

Type: Backdoor

Aliases: Backdoor:W32/[family].[variant]!Online


This detection from the F-Secure Security Cloud identifies a file with code or behavior that matches known backdoors.


Automatic action

Once detected, the F-Secure security product will automatically block the program and prompt the user for a desired action.

Knowledge Base

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About the product

See the manual for your F-Secure product on the Help Center.

Contact Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

F-Secure Security Cloud is an online reputation service that provides the latest analysis and reputation rating for programs, files and websites. If a questionable program or file is found during a scan, a query is sent to the Security Cloud to get the most recent reputation rating for it.

Based on the settings of your F-Secure security product, it will then use the information from Security Cloud (and if needed, further analysis) to determine whether to delete, quarantine or block the program or file.

The Security Cloud rating for the identified program or file indicates that it has code similar to backdoors - remote administration tools (RATs) allow a user to remotely access and control a device, such as a computer, server or mobile phone.

While such programs may be legitimate, and may be used for legitimate reasons by authorized administrators, they are also frequently used by attackers to gain control of a user's machine without their knowledge or authorization.