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dot3mm.dll

Wired Network Media Manager file version info

Library on Windows 1 known copy with hashes

Is it the real dot3mm.dll?

file version info and known copies
Installed inC:\Windows\system32\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionWired Network Media Manager

1 known copy

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\dot3mm.dll · signed by Microsoft Windows

3cecd2f572dc8f6ed1279d7f6f29c78c015a3cdc95dd88c9ad94d9797eddacf9

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.