efsutil.dll
EFS Utility Library file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real efsutil.dll?
Installed in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionEFS Utility Library
2 known copies
10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\efsutil.dll · signed by Microsoft Windows
897a2cdcef5ce938dfb2cee403768db0d8b0e465b88947b1ce53e6cc8f28dac710.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\efsutil.dll · signed by Microsoft Windows
d64e237a51408d12d8af1b3a74aa6f1f8eb3a053847934ae316d9f08e7f9db87From 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 efsutil.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.