The SOC team has confirmed a potential indicator of compromise on an endpoint. The team has narrowed the executable file's type to a new trojan family. According to the NIST Computer Security…

Isolating the endpoint (containment) is a subsequent step, which should be guided by the incident's prioritization and impact assessment.

Performing forensics analysis is an in-depth analytical activity that might happen during or after containment and eradication, often for root cause analysis or evidence collection, but prioritization comes first to guide such efforts.

Collecting public information on malware behavior is part of the analysis phase, which has already begun, but prioritizing the incident's response based on its impact is a more immediate and overarching next decision point.

According to NIST SP 800-61, after an incident is detected and initial analysis is performed (confirming IOC, identifying malware type), the next crucial step is to prioritize the incident handling based on its potential impact to determine the appropriate response urgency and resource allocation.