CmdID

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wcmapi.dll

Windows Connection Manager Client API file version info

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

Is it the real wcmapi.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionWindows Connection Manager Client API

2 known copies

10.0.19041.423 (WinBuild.160101.0800) · C:\Windows\system32\wcmapi.dll · signed by Microsoft Windows

2584a6d8c5d3c5bb77bf76c84521ad268a7956586fa607dfadd14a577f66a440

10.0.19041.423 (WinBuild.160101.0800) · C:\Windows\SysWOW64\wcmapi.dll · signed by Microsoft Windows

ecef312e76dc17f483cf29de7c6cdcc63728d67042e3a8e4b8237553a112a98c

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