AWS EC2 Instance Conducting a Port Scan

Classification:

attack

Tactic:

TA0007-discovery

Technique:

T1046-network-service-scanning

Set up the guardduty integration.

Overview

Goal

Detect when an EC2 instance is conducting a port scan.

Strategy

This rule lets you monitor this GuardDuty integration finding:

• Recon:EC2/Portscan

Triage & Response

1. Determine why traffic from the EC2 instance appears to be conducting a port scan.
2. If the instance is compromised:
   • Review the AWS documentation on remediating a compromised EC2 instance.