Microsoft.Mashup.EventSource.dll

Library on Windows 1 known copy with hashes

Is it the real Microsoft.Mashup.EventSource.dll?

file version info and known copies

Installed inC:\Program Files (x86)\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\

Signed byMicrosoft Corporation

ProductMicrosoft Mashup Runtime, Microsoft Corporation

1 known copy

2.78.5740.481 · C:\Program Files (x86)\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.EventSource.dll · signed by Microsoft Corporation

17c59922880c01e208f0179079821562d863bbd94c8e9ac3d14c997264198499

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.