tapi32.dll
Microsoft Windows(TM) Telephony API Client DLL file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real tapi32.dll?
C:\Windows\system32\C:\Windows\SysWOW64\2 known copies
10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\tapi32.dll · signed by Microsoft Windows
7c9e66823c48f82950ba3a546669b5d6b642c4df1b3f45037ffe1823918b530510.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\tapi32.dll · signed by Microsoft Windows
e9bb06ae707839e632d9c1bd6fd117d8a7f8e3c383ff5db90e80ce258c13fa8aFrom 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 tapi32.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.