credential_access_posh_request_ticket.toml

[metadata]
creation_date = "2021/01/24"
maturity = "production"
updated_date = "2021/01/24"

[rule]
author = ["Elastic"]
description = """
Detects PowerShell scripts that have the capability of requesting kerberos tickets, which is a common step in
Kerberoasting toolkits to crack service accounts.
"""
from = "now-9m"
index = ["winlogbeat-*", "logs-windows.*"]
language = "kuery"
license = "Elastic License v2"
name = "PowerShell Kerberos Ticket Request"
references = [
    "https://cobalt.io/blog/kerberoast-attack-techniques",
    "https://github.com/EmpireProject/Empire/blob/master/data/module_source/credentials/Invoke-Kerberoast.ps1",
]
risk_score = 47
rule_id = "eb610e70-f9e6-4949-82b9-f1c5bcd37c39"
severity = "medium"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Credential Access"]
timestamp_override = "event.ingested"
type = "query"

query = '''
event.category:process and 
  powershell.file.script_block_text : (
    KerberosRequestorSecurityToken
  )
'''


[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1003"
name = "OS Credential Dumping"
reference = "https://attack.mitre.org/techniques/T1003/"

[[rule.threat.technique]]
id = "T1558"
name = "Steal or Forge Kerberos Tickets"
reference = "https://attack.mitre.org/techniques/T1558/"

    [[rule.threat.technique.subtechnique]]
    id = "T1558.003"
    name = "Kerberoasting"
    reference = "https://attack.mitre.org/techniques/T1558/003/"

[rule.threat.tactic]
id = "TA0006"
name = "Credential Access"
reference = "https://attack.mitre.org/tactics/TA0006/"


[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"

    [[rule.threat.technique.subtechnique]]
    id = "T1059.001"
    name = "PowerShell"
    reference = "https://attack.mitre.org/techniques/T1059/001/"

[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"