IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Hidden Files and Directories via Hidden Flag

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Hidden Files and Directories via Hidden Flag

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Identify activity related where adversaries can add the hidden flag to files to hide them from the user in an attempt to evade detection.

Rule type: eql

Rule indices:

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

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Domain: Endpoint
OS: Linux
OS: macOS
Use Case: Threat Detection
Tactic: Defense Evasion
Data Source: Elastic Defend
Data Source: Elastic Endgame
Data Source: Auditd Manager

Version: 3

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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file where host.os.type == "linux" and event.type == "creation" and process.name == "chflags"

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Hide Artifacts
- ID: T1564
- Reference URL: https://attack.mitre.org/techniques/T1564/
Sub-technique:
- Name: Hidden Files and Directories
- ID: T1564.001
- Reference URL: https://attack.mitre.org/techniques/T1564/001/

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