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MSAMRNBSource.dll

AMR Narrowband Source DLL file version info

Library on Windows 2 known copies with hashes

Is it the real MSAMRNBSource.dll?

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

2 known copies

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\MSAMRNBSource.dll · signed by Microsoft Windows

178529e056949af43cd008e276d693e099846e592c6f3d37adc3835036b9b29e

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

b050cb2685e2da30d72b9bf837754fb07a83566ae97b78f8998cce31356508f4

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.