joinutil.dll
Join Utility DLL file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real joinutil.dll?
Installed in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionJoin Utility DLL
2 known copies
10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\joinutil.dll · signed by Microsoft Windows
5f64a47e9a89ba52a9570aaf59ff6304172a59fa6cda1b84a5fa107130c6367310.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\joinutil.dll · signed by Microsoft Windows
c3ba678a9f8e5f15fcf38f9727a66e93d3abc09c86b9b9e56965dc5b11809c23From 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 names joinutil.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.