winmm.dll
MCI API DLL file version info
Library on Windows 2 known copies with hashes 2 Sigma rules name it
Is it the real winmm.dll?
Installed in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMCI API DLL
2 known copies
10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\winmm.dll · signed by Microsoft Windows
0d0505f797dfe383b2f7a5ba760279aa2a3d5afedde73fdb745c2d343695531c10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\winmm.dll · signed by Microsoft Windows
da82d168eccbed5434b84786f6bb4abc43ac6f9f5d04dfdd041cba423e0ee50aFrom 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 winmm.dll in 2 rules, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.