What is the appropriate response when a malware incident requires advanced remediation in the Microsoft 365 Defender SOC?

The appropriate response when a malware incident necessitates advanced remediation in the Microsoft 365 Defender Security Operations Center (SOC) is to escalate the case to the Tier 2 Investigation team for further analysis and remediation. This choice is correct because advanced remediation often involves a deeper understanding of the incident, potential impacts on the organization, and the development of a tailored response plan. Tier 2 analysts typically possess more experience and specialized skills to handle complex scenarios that go beyond initial assessments, ensuring that the remediation process is thorough and effective.

In terms of the other options, initiating an automated response might be appropriate for straightforward incidents but could lead to unnecessary disruptions or complications in more complex situations. Closing the alert without further investigation undermines the importance of understanding and resolving the root cause of the malware incident, potentially leaving the organization vulnerable to further attacks. Ignoring the alert is counterproductive, as it fails to address the incident and may allow a serious threat to persist, putting the organization’s security at risk.