iertutil.dll
Run time utility for Internet Explorer file version info
Library on Windows 2 known copies with hashes 4 Sigma rules name it
Is it the real iertutil.dll?
C:\Windows\system32\C:\Windows\SysWOW64\2 known copies
11.00.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\iertutil.dll · signed by Microsoft Windows
7d80927ec6fa8cf98be6bfdc50c8c9de221df452e1144d6bf91f9efa74264b7711.00.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\iertutil.dll · signed by Microsoft Windows
83059d16408d52752d0d93e5cad700754ef4624a13b638068d258fffede5c89dFrom 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 iertutil.dll in 4 rules, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.