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sas.dll

WinLogon Software SAS Library file version info

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

Is it the real sas.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionWinLogon Software SAS Library

2 known copies

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

7d78f5e2102c8e12b591e8c38c95f400a4b3cc3ce911f26b9453d5aaf7f8532d

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

b5c5970704ec006c7fc2c88301161ac158ce4e9ee08634755e3687556f8d64a9

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