privilege_escalation_sts_getsessiontoken_abuse.toml

[metadata]
creation_date = "2021/05/17"
maturity = "production"
updated_date = "2021/10/11"
integration = "aws"

[rule]
author = ["Austin Songer"]
description = """
Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and 
escalate privileges.
"""
false_positives = [
    """
    GetSessionToken may be done by a system or network administrator. Verify whether the user identity, user 
    agent, and/or hostname should be making changes in your environment. GetSessionToken from unfamiliar users or 
    hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
    """,
]
index = ["filebeat-*", "logs-aws*"]
language = "kuery"
license = "Elastic License v2"
name = "AWS STS GetSessionToken Abuse"
note = """## Config

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
references = [
    "https://docs.aws.amazon.com/STS/latest/APIReference/API_GetSessionToken.html",
]

risk_score = 21
rule_id = "b45ab1d2-712f-4f01-a751-df3826969807"
severity = "low"
tags = ["Elastic", "Cloud", "AWS", "Continuous Monitoring", "SecOps", "Identity and Access"]
timestamp_override = "event.ingested"
type = "query"

query = '''
event.dataset:aws.cloudtrail and event.provider:sts.amazonaws.com and event.action:GetSessionToken and 
aws.cloudtrail.user_identity.type:IAMUser and event.outcome:success
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1548"
name = "Abuse Elevation Control Mechanism"
reference = "https://attack.mitre.org/techniques/T1548/"


[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 = "T1550"
name = "Use Alternate Authentication Material"
reference = "https://attack.mitre.org/techniques/T1550/"
[[rule.threat.technique.subtechnique]]
id = "T1550.001"
name = "Application Access Token"
reference = "https://attack.mitre.org/techniques/T1550/001/"



[rule.threat.tactic]
id = "TA0008"
name = "Lateral Movement"
reference = "https://attack.mitre.org/tactics/TA0008/"