Elastic Security Detection Rules

AWS EC2 Network Access Control List Deletion

Last updated 19 days ago on 2025-06-05
Created 5 years ago on 2020-05-26

About

Identifies the deletion of an Amazon Elastic Compute Cloud (EC2) network access control list (ACL) or one of its ingress/egress entries.
Tags
Domain: CloudData Source: AWSData Source: Amazon Web ServicesData Source: AWS EC2Use Case: Network Security MonitoringTactic: Defense EvasionLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Impair Defenses (T1562)(opens in a new tab or window)

False Positive Examples
Network ACL's may be deleted by a network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Network ACL deletions by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-aws.cloudtrail-*
Related Integrations

aws(opens in a new tab or window)

Query
event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:(DeleteNetworkAcl or DeleteNetworkAclEntry) and event.outcome:success

Install detection rules in Elastic Security

Detect AWS EC2 Network Access Control List Deletion in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).