CmdID

CmdID / Files

ntshrui.dll

Shell extensions for sharing file version info

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

Is it the real ntshrui.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionShell extensions for sharing

2 known copies

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

1538e9e2e075265da414fac4ffb918c8ccca01dbd3c1a79ce8bc344ce7959a14

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

926a49877fa1062180df67aebd5cb7b9340e75f9fb265cec54ec6640101558ca

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