CmdID

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cryptdll.dll

Cryptography Manager file version info

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

Is it the real cryptdll.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionCryptography Manager

2 known copies

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

1b760c40c6d4f81e90978a13321c94c62ce53cc220234d50dfe8ec4638bf4b95

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

f46f29506ac8e8fce62cbad5effde1b3bdbf1a32877f37ec2c29259036eea100

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