Kerberos Cached Credentials Dumping

Elastic Stack Serverless Security

Identifies the use of the Kerberos credential cache (kcc) utility to dump locally cached Kerberos tickets.

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: 4

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/