loadperf.dll
Load & Unload Performance Counters file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real loadperf.dll?
Original name
LODCTR.DLL 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
DescriptionLoad & Unload Performance Counters
2 known copies
10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\loadperf.dll · signed by Microsoft Windows
3403c5162f4da78920ffcf82db31aaf8e7a20a108bb8720ca2ff087f72cd37c510.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\loadperf.dll · signed by Microsoft Windows
b44a1555f968901c8b1b634024b6e3df6447dcdbab47fabfc0e934dd54232df0From 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 loadperf.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.