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cryptbase.dll

Base cryptographic API DLL file version info

Library on Windows 2 known copies with hashes 2 Sigma rules name it

Is it the real cryptbase.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionBase cryptographic API DLL

2 known copies

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\cryptbase.dll · signed by Microsoft Windows

36dfa707d432ff6950d23a3dc72ff50401b4b59059279c2b808fb735683c29e2

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\cryptbase.dll · signed by Microsoft Windows

9705f8bba23044aa2f9aff5579efada04ad6ae49acf418ce72f2f296cba61374

From 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

Sigma names cryptbase.dll in 2 rules, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.