I'm a macOS user, so cannot give you a definitive answer, but at the time it was so common that I can't imagine that all necessary signatures for the original and all subsequent variants were added years ago.
I'm also under the impression that most versions of Windows OS have been patched to prevent it, including some that were End Of Life.
And kill switch domains were obtained for all but the most recent version, making those unable to encrypt or spread.
-Al-
Dear ClamAV Users,
I was looking after "Does
ClamAV catch WannaCry malware?" on Google,
but I haven't found any significant answer about this.
Could you answer?
Thank you,
Ervin Wirth