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rdbui.dll

ReadyBoost UI file version info

Library on Windows 1 known copy with hashes

Is it the real rdbui.dll?

file version info and known copies
Installed inC:\Windows\system32\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionReadyBoost UI

1 known copy

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

ffa01dbf1300b02c0f1044126c440d65bb818d318b5d1717da10ea1cb8d7f90b

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.