[metadata]
creation_date = "2020/12/07"
maturity = "production"
updated_date = "2020/12/07"

[rule]
author = ["Elastic"]
description = """
Identifies execution of the security_authtrampoline process via the Apple script interpreter (osascript). This occurs
when programs use AuthorizationExecute-WithPrivileges from the Security.framework to run another program with root
privileges. It should not be run by itself, as this is a sign of execution with explicit logon credentials.
"""
from = "now-9m"
index = ["auditbeat-*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License"
name = "Execution with Explicit Credentials via Apple Scripting"
references = [
    "https://objectivebythesea.com/v2/talks/OBTS_v2_Thomas.pdf",
    "https://www.manpagez.com/man/8/security_authtrampoline/",
]
risk_score = 47
rule_id = "f0eb70e9-71e9-40cd-813f-bf8e8c812cb1"
severity = "medium"
tags = ["Elastic", "Host", "macOS", "Threat Detection", "Execution", "Privilege Escalation"]
type = "eql"

query = '''
sequence by host.id with maxspan=5s
 [process where event.type in ("start", "process_started", "info") and process.name == "osascript"] by process.pid
 [process where event.type in ("start", "process_started") and process.name == "security_authtrampoline"] by process.ppid
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1078"
name = "Valid Accounts"
reference = "https://attack.mitre.org/techniques/T1078/"


[rule.threat.tactic]
id = "TA0004"
name = "Privilege Escalation"
reference = "https://attack.mitre.org/tactics/TA0004/"
[[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.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
