CertEnroll.dll
Microsoft Active Directory Certificate Services Enrollment Client file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real CertEnroll.dll?
CertEnroll in the file’s header: a renamed copy still carries itC:\Windows\system32\C:\Windows\SysWOW64\2 known copies
10.0.19041.329 (WinBuild.160101.0800) · C:\Windows\SysWOW64\CertEnroll.dll · signed by Microsoft Windows
5afbf6bde26575c951f1a4ee7f68d81a3c1b2a95fdb5f87967f1a805e6cb319610.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\CertEnroll.dll · signed by Microsoft Windows
db7f8d09d63f19cdd22cd1e59d4632c57973825982265113f1de3355d40c3caeFrom 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 CertEnroll.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.