Elastic Security Detection Rules

Potential Unauthorized Access via Wildcard Injection Detected

Last updated 5 months ago on 2025-03-20
Created 2 years ago on 2023-07-28

About

This rule monitors for the execution of the "chown" and "chmod" commands with command line flags that could indicate a wildcard injection attack. Linux wildcard injection is a type of security vulnerability where attackers manipulate commands or input containing wildcards (e.g., *, ?, []) to execute unintended operations or access sensitive data by tricking the system into interpreting the wildcard characters in unexpected ways.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: Privilege EscalationTactic: Credential AccessData Source: Elastic EndgameData Source: Elastic DefendData Source: Auditd ManagerData Source: CrowdstrikeData Source: SentinelOneLanguage: eql
Severity
low
Risk Score
21
MITRE ATT&CK™

Privilege Escalation (TA0004)(opens in a new tab or window)

↳ Exploitation for Privilege Escalation (T1068)(opens in a new tab or window)

Credential Access (TA0006)(opens in a new tab or window)

↳ OS Credential Dumping (T1003)(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
auditbeat-*endgame-*logs-auditd_manager.auditd-*logs-crowdstrike.fdr*logs-endpoint.events.process*logs-sentinel_one_cloud_funnel.*
Related Integrations

endpoint(opens in a new tab or window)

auditd_manager(opens in a new tab or window)

crowdstrike(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

Query
process where host.os.type == "linux" and event.type == "start" and
  event.action in ("exec", "exec_event", "start", "ProcessRollup2", "executed", "process_started") and
  process.name in ("chown", "chmod") and process.args == "-R" and process.args : "--reference=*"

Install detection rules in Elastic Security

Detect Potential Unauthorized Access via Wildcard Injection Detected 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).