clusapi.dll
Cluster API Library file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real clusapi.dll?
Original name
clusapi in the file’s header: a renamed copy still carries itInstalled in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionCluster API Library
2 known copies
10.0.19041.488 (WinBuild.160101.0800) · C:\Windows\SysWOW64\clusapi.dll · signed by Microsoft Windows
992c20c657abb5f9c3a986526e34ba17cacb01f1fc0231c2d536c56fdbe546c010.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\clusapi.dll · signed by Microsoft Windows
94fcb6defbccef9783791394fbfb638f4a142a8da011ac4bb49db58aab33ef9dFrom 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 clusapi.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.