So, you really don't need to worry about Outlook. The malicious element was the email. Has that been removed? As for the other elements - the endpoint detected the action and stopped it - that is the only…
Hello Prabin Tamang,
is this indeed the On-Premise Endpoint, not Intercept X? The former doesn't talk of a Root Cause.
Anyway, this acticity doesn't seem normal, you should open a case with Support. Is this a report from just one endpoint or a summary?