Backdoor:W32/Haxdoor is a family of malicious remote administration programs (RAT) that are commonly used by attackers to steal sensitive information - passwords, account details, etc - from infected systems. Later variants in the Haxdoor family also engage in attacks against online payment systems and banking portals.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
While active on the infected computer, Haxdoor variants can perform a variety of malicious actions, including killing processes, blocking connections to sites and so on.
Some Haxdoor variants also include rootkit capabilities and are able to hide their presence and actions on the computer system.
Representative examples of Haxdoor variants include: