Elastic Security Detection Rules

Unusual User Privilege Enumeration via id

Last updated 7 days ago on 2025-01-24
Created a year ago on 2023-08-29

About

This rule monitors for a sequence of 20 "id" command executions within 1 second by the same parent process. This behavior is unusual, and may be indicative of the execution of an enumeration script such as LinPEAS or LinEnum. These scripts leverage the "id" command to enumerate the privileges of all users present on the system.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: DiscoveryData Source: Elastic DefendLanguage: eql
Severity
low
Risk Score
21
MITRE ATT&CK™

Discovery (TA0007)(opens in a new tab or window)

↳ System Owner/User Discovery (T1033)(opens in a new tab or window)

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

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-endpoint.events.*
Related Integrations

endpoint(opens in a new tab or window)

Query
sequence by host.id, process.parent.entity_id with maxspan=1s
  [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and
   process.name == "id" and process.args_count == 2 and
   not (
     process.parent.name in ("rpm", "snarftmp", "quota_copy", "java") or
     process.parent.args : "/var/tmp/rpm-tmp*"
    )] with runs=20

Install detection rules in Elastic Security

Detect Unusual User Privilege Enumeration via id 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).