Elastic Security Detection Rules

Unusual Preload Environment Variable Process Execution

Last updated 7 months ago on 2025-01-15
Created 8 months ago on 2024-12-16

About

This rule detects processes that are executed with environment variables that are not commonly used. This could indicate an attacker is attempting to hijack the execution flow of a process by loading malicious libraries or binaries into the process memory space.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: Defense EvasionTactic: PersistenceData Source: Elastic DefendLanguage: kuery
Severity
low
Risk Score
21
MITRE ATT&CK™

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

↳ Hijack Execution Flow (T1574)(opens in a new tab or window)

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

↳ Hijack Execution Flow (T1574)(opens in a new tab or window)

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

Definition

Rule Type
New Terms Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-endpoint.events.process*
Related Integrations

endpoint(opens in a new tab or window)

Query
event.category:process and host.os.type:linux and event.type:start and event.action:exec and process.env_vars:*

Install detection rules in Elastic Security

Detect Unusual Preload Environment Variable Process Execution 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).