Linux System Information Discovery

Last updated 21 days ago on 2025-12-24
Created 3 years ago on 2023-07-10

About

This rule identifies Linux system information discovery activity via built-in commands that read common system files. Adversaries may use these commands to gather information about the operating system, installed services, and hardware configuration to aid in further exploration and exploitation of the system.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: DiscoveryRule Type: BBRData Source: Elastic DefendData Source: Elastic EndgameData Source: SentinelOneLanguage: kuery
Severity
low
Risk Score
21
MITRE ATT&CK™

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

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

Definition

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

endpoint(external, opens in a new tab or window)

sentinel_one_cloud_funnel(external, opens in a new tab or window)

Query
text code block:
event.category:process and host.os.type:linux and event.type:start and event.action:(exec or exec_event or start) and process.name:("cat" or "more" or "less" or "nano" or "vi" or "vim" or "vim.basic" or "emacs") and process.args:( "/etc/issue" or "/etc/os-release" or "/proc/version" or "/etc/profile" or "/proc/cpuinfo" or "/etc/services" or "/etc/lsb-release" or "/etc/redhat-release" or "/etc/debian_version" or "/etc/hostname" ) and not process.parent.executable:("/usr/local/jamf/bin/jamf" or "/etc/cp/watchdog/cp-nano-watchdog")

Install detection rules in Elastic Security

Detect Linux System Information Discovery 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).