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AWS EC2 instance conducting a port scan

guardduty

Classification:

attack

Tactic:

TA0007-discovery

Technique:

T1046-network-service-discovery

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Goal

Detect when an EC2 instance is conducting a port scan.

Strategy

This rule lets you monitor this GuardDuty integration finding:

Triage and 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.

Changelog

  • 17 October 2022 - Updated tags.
  • 1 November 2022 - Updated links.