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IconCodecService.dll

Converts a PNG part of the icon to a legacy bmp icon file version info

Library on Windows 2 known copies with hashes

Is it the real IconCodecService.dll?

file version info and known copies
Original nameICONCODESERVICE.DLL in the file’s header: a renamed copy still carries it
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionConverts a PNG part of the icon to a legacy bmp icon

2 known copies

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

81f3e73c0abf9d5f908e12bbe6d7b20737bf11b73bd0caead8de5f8261a87910

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

839fd82ffd0847723c0198baed26348b734e1d2abffce517248d50a96919c6dd

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.