C:\Program Files\suxo.exe was my hijackthis.exe renamed.
But when you mentioned Serap.exe, I've explored that in the specified folderare 2 renamed hijack exe files: one of them suxo,the other serap.I'm sure I have not created Serap.exe.Maybe you'll think I'm paranoid, but I suspect being hacked.This has happened to me several times before.
I share my network with my sister and last week some files came from her computer to mine.We don't understand how these strange things happen.I have no infromation about security issues of a local network.
Sorry to state that f-secure doesn't work either.First tried in the afternoon when bitdefender was of no use and twice now. A warning comes saying that downloads could not be made.