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rsaenh.dll

Microsoft Enhanced Cryptographic Provider file version info

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

Is it the real rsaenh.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMicrosoft Enhanced Cryptographic Provider

2 known copies

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

cad8952c855e914e0002a90ecc8205485cba016b79d00ce2faea59d8f6aaada4

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

fb18a14da508e9c7841562b764832e7087d88ce9e16d89d18d8db78f65bc7292

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