Question 370
A SOC repeatedly isolates endpoints running confirmed known ransomware and wants to shorten reaction time safely. Which automation or orchestration approach BEST addresses this workflow?
Explanation
Correct Answer
Blind action on weak indicators risks outages. Use a narrowly scoped SOAR action bound to confirmed hash detections to tell the EDR agent to isolate the affected endpoint. Log the triggering evidence, make actions reversible, exclude essential systems where required, and notify responders so automation reduces spread without uncontrolled mass disconnection. A narrowly authorized SOAR playbook can invoke EDR containment only for the verified ransomware indicator, record the action, and support human override.
Incorrect Answers
Not every automated notification needs the same gate. Human approval may be warranted for low-confidence or business-critical hosts, and the approved playbook should encode those exceptions. A universal manual gate for every independently verified ransomware signature would retain much of the delay the SOC is explicitly trying to reduce.
Enrichment itself is not equivalent to blocking traffic. Enriching a detection with reputation and contextual data can help confirm the ransomware hash. If the SOC already knows the indicator is malicious, enrichment without an enforcement step still allows active file encryption and lateral movement to continue.
The workflow still needs ownership and duplicate-event handling. Creating enriched incidents ensures analysts have records and ownership, but recording a ransomware alert does not stop the affected workstation from reaching network shares. The requested improvement is rapid, controlled containment, not only documentation of the detection.