FirewallAPI.dll
Windows Defender Firewall API file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real FirewallAPI.dll?
C:\Windows\system32\C:\Windows\SysWOW64\2 known copies
10.0.19041.488 (WinBuild.160101.0800) · C:\Windows\system32\FirewallAPI.dll · signed by Microsoft Windows
67cd9c7f5ab8855e1f39aea3c663235bd7ef9f155184eb28fdd0783d53d9f91b10.0.19041.329 (WinBuild.160101.0800) · C:\Windows\SysWOW64\FirewallAPI.dll · signed by Microsoft Windows
d4dd047f970cd6bde2a789c69e0e87ef700c9a11c89763413e7013821fee84edFrom 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 FirewallAPI.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.