CmdID

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Microsoft.Mashup.Shims.dll

Library on Windows 1 known copy with hashes

Is it the real Microsoft.Mashup.Shims.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.Shims.dll · signed by Microsoft Corporation

01904606fc2e57ed7672f208ace1871466c9805e08daa1f57e527e83f5c5955e

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.