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uxtheme.dll

Microsoft UxTheme Library file version info

Library on Windows 2 known copies with hashes 1 Sigma rule names it

Is it the real uxtheme.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMicrosoft UxTheme Library

2 known copies

10.0.19041.488 (WinBuild.160101.0800) · C:\Windows\SysWOW64\uxtheme.dll · signed by Microsoft Windows

00251351ae23e20a3121669fff21c5abb7b37563a1ff766aebbf3e39d22b4548

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

006d25fe509c8e2fbbcf59107b20d439989bb6a52ba6ba92fffb68922d693b29

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.

What detects it

Sigma

Sigma names uxtheme.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.