Adding Hidden File Attribute via Attrib

Elastic Stack Serverless Security

Adversaries can add the hidden attribute to files to hide them from the user in an attempt to evade detection.

Rule type: eql

Rule indices:

• winlogbeat-*
• logs-endpoint.events.*
• logs-windows.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

• Elastic
• Host
• Windows
• Threat Detection
• Defense Evasion

Version: 15

Rule authors:

• Elastic

Rule license: Elastic License v2

process where event.type in ("start", "process_started") and
  process.name : "attrib.exe" and process.args : "+h"

Framework: MITRE ATT&CKTM

• 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/

• Tactic:

  • Name: Persistence
  • ID: TA0003
  • Reference URL: https://attack.mitre.org/tactics/TA0003/