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mf.dll

Media Foundation DLL file version info

Library on Windows 2 known copies with hashes

Is it the real mf.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMedia Foundation DLL

2 known copies

10.0.19041.488 (WinBuild.160101.0800) · C:\Windows\SysWOW64\mf.dll · signed by Microsoft Windows

7c5c0d6af15acb12a54a2ae2492830a348178dab0e3cfd15509204e977bf1a28

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\mf.dll · signed by Microsoft Windows

9e30384a76f9119dff8e44bae30f44cd4a0ef0c3761d178de5a14f34b3031bc8

From the file’s version info and the copies recorded by xCyclopedia (MIT). A copy in another folder, signed by someone else or with another hash is not necessarily malicious, but it is worth a closer look. In Ceplin, "<sha256>".whatis() says which known copy a hash is.