Question

Difficulty: MediumEndpoint Detection and Response (EDR)

A Security Operations Center (SOC) analyst receives a high-severity alert from an enterprise Endpoint Detection and Response (EDR) platform. Telemetry indicates an unprivileged user account initiated a obfuscated command execution that attempted process injection into `lsass.exe` and established an encrypted outbound connection to an untrusted external IP address. Which TWO of the following actions represent capabilities native to an EDR solution that the analyst should execute to contain the threat and facilitate analysis?

  1. Apply host network isolation through the EDR agent software to sever attacker communication while maintaining management console connectivity.Answer
  2. B
    Push a static signature file update across all network legacy antivirus endpoints to block the obfuscated command hash.
  3. Issue a remote live response command via the EDR console to dump volatile RAM contents and terminate the malicious parent process tree.Answer
  4. D
    Reconfigure the perimeter egress firewall rules to block traffic directed to the external destination IP address.

Answer

The analyst should isolate the host via the EDR agent console and execute a remote live response action to dump volatile memory and kill the malicious process tree.
Host network isolation directly through the EDR console stops malicious communication while preserving management control, and remote live response tools enable analysts to capture volatile memory and terminate running processes on the target host.

Step-by-Step Solution

1
Identify EDR containment capabilities.
Host isolation via the EDR agent restricts host network traffic to only the EDR management channel, neutralizing network activity without disabling endpoint telemetry.
Prevents lateral movement and remote C2 without taking the host offline completely from the security team.
2
Identify EDR live response and forensic capabilities.
EDR consoles permit remote execution of administrative scripts to dump memory for forensic capture and kill process trees executing injected code.
Allows immediate threat eradication and forensic collection directly on the endpoint.

Key Concept

EDR Host Containment and Live Response Features
Estimated Time:1m 30s
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