CmdID

CmdID / Files

security.dll

Security Support Provider Interface file version info

Library on Windows 2 known copies with hashes 1 Sigma rule names it

Is it the real security.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionSecurity Support Provider Interface

2 known copies

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

8c306cc13dfe0b9e82dd7257e3a13286b830518fc2ceda0ab36e0031b42b78dd

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

f8b73fab687f20a3574df1b823686fc53c769cffa4b80610f81bec13a29292a4

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 security.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.