kernel32.dll
Windows NT BASE API Client DLL file version info
Library on Windows 2 known copies with hashes 4 Sigma rules name it
Is it the real kernel32.dll?
Original name
kernel32 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
DescriptionWindows NT BASE API Client DLL
2 known copies
10.0.19041.329 (WinBuild.160101.0800) · C:\Windows\system32\kernel32.dll · signed by Microsoft Windows
d60f9eaa4f62f0ee84531d9aa633c5bb390ea0056953e58d80b9a62277dbe5c510.0.19041.292 (WinBuild.160101.0800) · C:\Windows\SysWOW64\kernel32.dll · signed by Microsoft Windows
7dfb22969d7a5410f8f63459d0c912a39519064c8931d0a24be1e86816a9e9d7From 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 kernel32.dll in 4 rules in all, for every kind of event; this is the process creation rule CmdID evaluates.