Processes with Trailing Spaces

Last updated a year ago on 2024-12-24

Created 2 years ago on 2023-08-24

About

Identify instances where adversaries include trailing space characters to mimic regular files, disguising their activity to evade default file handling mechanisms.

Tags

Domain: EndpointOS: LinuxOS: macOSUse Case: Threat DetectionTactic: Defense EvasionData Source: Elastic DefendData Source: Elastic EndgameData Source: Auditd ManagerLanguage: eql

Severity

low

Risk Score

MITRE ATT&CK™

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

↳ Masquerading (T1036)(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

logs-endpoint.events.*endgame-*auditbeat-*logs-auditd_manager.auditd-*

Related Integrations

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

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

Query

✄𐘗text code block:
✄𐘗process where event.type == "start" and event.action in ("exec", "exec_event", "executed", "process_started") and
process.name : "* "

Install detection rules in Elastic Security

Detect Processes with Trailing Spaces 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).