File libmwtester_core_mi.dll from R2022b flagged as trojan virus

Hi everyone,

I just updated my Matlab version to R2022b on Windows 10 and my Avast antivirus is flagging the following file as a Trojan virus of type Win64:Evo-gen[TrJ]:

MATLAB\R2022b\bin\win64\libmwxtester_core_mi.dll

I installed Matlab from the official website, so I would expect this is a false positive, but I would like to be certain. The sha256 file hash, obtained on Windows with the command

CertUtil -hashfile "C:\Program Files\MATLAB\R2022b\bin\win64\libmwxtester_core_mi.dll" sha256

is

ef2717ec9deb4bd6d69b0b850f8b8b16ffa76e52a82d7dd1f82b2109ddd712a5

and my Matlab version is

>> version

ans =

    '9.13.0.2105380 (R2022b) Update 2'

Could anyone confirm that the hash value is correct? Thank you very much.

Best regards,

Laurent

Answer 1

[Stefanie Schwarz]

Hi Laurent,

thank you for reporting this. I can confirm this hash value from my own MATLAB R2022b installation.

We are aware of this issue at MathWorks Support and it is safe to assume that this a false positive since we have only seen this issue reported by Avast and AVG antivirus users. See the following post for more info:

https://www.mathworks.com/matlabcentral/answers/1866448

HTH, Stefanie

[Laurent Storrer]

Hi Stefanie,

Thanks for your reply and confirmation!

Best regards,

Laurent