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hidden File - SAVRKBootTasks.sys

Matt-STL

Hi, i have just run Sophos Anti-Root kit on  my Windows 7 Professional Notebook.  It has found the following Unknown hidden file:

C:\Windows\System32\SAVRKBootTasks.sys

I have googled and can't find anything useful.  I don't beleive it is a Windows file. It is hidden, I have show hidden files enabled and can't seam to access, even from the command line, e.g. trying to copy to another location.  Windows states the file doesn't exist.

Can't anyone help identify what this file is?

Regards

Matt

:5220


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    Hello Matt,

    was this the initial (and only) run of the Anti-Rootkit?

    SAVRKBootTasks.sys (actually the name all lowercase) is in the Sophos Anti-Rootkit folder. I can imagine it is copied to the system32 directory when a cleanup is needed and requested. This doesn't explain why it is detected though. Sadly I have fortunately no rootkits available with which I could test the behaviour.

    Does it still turn up after a reboot and a new scan?

    Christian   

    :5235