Kerberos Cached Credentials Dumping

Elastic Stack Serverless Security

Identifies the use of the Kerberos credential cache (kcc) utility to dump locally cached Kerberos tickets. Adversaries may attempt to dump credential material in the form of tickets that can be leveraged for lateral movement.

Rule type: query

Rule indices:

• auditbeat-*
• logs-endpoint.events.*

Severity: high

Risk score: 73

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:

• https://github.com/EmpireProject/EmPyre/blob/master/lib/modules/collection/osx/kerberosdump.py
• https://opensource.apple.com/source/Heimdal/Heimdal-323.12/kuser/kcc-commands.in.auto.html

Tags:

• Elastic
• Host
• macOS
• Threat Detection
• Credential Access

Version: 101

Rule authors:

• Elastic

Rule license: Elastic License v2

event.category:process and event.type:(start or process_started) and
  process.name:kcc and
  process.args:copy_cred_cache

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Credential Access
  • ID: TA0006
  • Reference URL: https://attack.mitre.org/tactics/TA0006/

• Technique:

  • Name: OS Credential Dumping
  • ID: T1003
  • Reference URL: https://attack.mitre.org/techniques/T1003/

• Technique:

  • Name: Steal or Forge Kerberos Tickets
  • ID: T1558
  • Reference URL: https://attack.mitre.org/techniques/T1558/

• Sub-technique:

  • Name: Kerberoasting
  • ID: T1558.003
  • Reference URL: https://attack.mitre.org/techniques/T1558/003/