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F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site. It is very rare for a Hupigon variant to be smaller than 299k B. The following text strings can typically be found in a Hupigon variant: When the backdoor's file is started, it copies itself as a file named something similar to "cn.exe" in the Windows System folder and then uses the following processes to make itself to look like a valid Windows program: Hupigon doesn't have any automatic mechanisms to spread itself.