User or Group Creation/Modification

Last updated a year ago on 2025-01-24

Created 2 years ago on 2024-06-20

About

This rule leverages the `auditd_manager` integration to detect user or group creation or modification events on Linux systems. Threat actors may attempt to create or modify users or groups to establish persistence on the system.

Tags

Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: PersistenceData Source: Auditd ManagerLanguage: eql

Severity

low

Risk Score

MITRE ATT&CK™

Persistence (TA0003)(external, opens in a new tab or window)

↳ Create Account (T1136)(external, opens in a new tab or window)

License

Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type: Event Correlation Rule
Integration Pack: Prebuilt Security Detection Rules
Index Patterns: auditbeat-*logs-auditd_manager.auditd-*
Related Integrations: auditd_manager(external, opens in a new tab or window)
Query

✄𐘗text code block:
✄𐘗iam where host.os.type == "linux" and event.type in ("creation", "change") and auditd.result == "success" and
event.action in ("changed-password", "added-user-account", "added-group-account-to") and process.name != null

Install detection rules in Elastic Security

Detect User or Group Creation/Modification 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(external, opens in a new tab or window).