shashank-elastic
70 lines
2.4 KiB
TOML
70 lines
2.4 KiB
TOML
[metadata]
|
|
creation_date = "2020/07/25"
|
|
integration = ["aws"]
|
|
maturity = "production"
|
|
updated_date = "2024/11/07"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
This rule detects the first time a principal calls AWS Cloudwatch `CreateStack` or `CreateStackSet` API. Cloudformation
|
|
is used to create a single collection of cloud resources called a stack, via a defined template file. An attacker with
|
|
the appropriate privileges could leverage Cloudformation to create specific resources needed to further exploit the
|
|
environment. This is a new terms rule that looks for the first instance of this behavior in the last 10 days for a role
|
|
or IAM user within a particular account.
|
|
"""
|
|
false_positives = [
|
|
"""
|
|
Verify whether the user identity should be using the `CreateStack` or `CreateStackSet` APIs. If known behavior is
|
|
causing false positives, it can be exempted from the rule. The "history_window_start" value can be modified to
|
|
reflect the expected frequency of known activity within a particular environment.
|
|
""",
|
|
]
|
|
from = "now-6m"
|
|
index = ["filebeat-*", "logs-aws.cloudtrail-*"]
|
|
language = "kuery"
|
|
license = "Elastic License v2"
|
|
name = "First Time AWS Cloudformation Stack Creation by User"
|
|
references = [
|
|
"https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-cli-creating-stack.html/",
|
|
"https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stacksets-concepts.html/",
|
|
"https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_CreateStack.html/",
|
|
"https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_CreateStackSet.html/",
|
|
]
|
|
risk_score = 47
|
|
rule_id = "0415258b-a7b2-48a6-891a-3367cd9d4d31"
|
|
severity = "medium"
|
|
tags = [
|
|
"Domain: Cloud",
|
|
"Data Source: AWS",
|
|
"Data Source: Amazon Web Services",
|
|
"Data Source: Cloudformation",
|
|
"Use Case: Asset Visibility",
|
|
"Tactic: Execution",
|
|
]
|
|
timestamp_override = "event.ingested"
|
|
type = "new_terms"
|
|
|
|
query = '''
|
|
event.dataset:aws.cloudtrail and event.provider:cloudformation.amazonaws.com and
|
|
event.action: (CreateStack or CreateStackSet) and event.outcome:success
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0002"
|
|
name = "Execution"
|
|
reference = "https://attack.mitre.org/tactics/TA0002/"
|
|
|
|
[rule.new_terms]
|
|
field = "new_terms_fields"
|
|
value = ["cloud.account.id", "user.name"]
|
|
[[rule.new_terms.history_window_start]]
|
|
field = "history_window_start"
|
|
value = "now-10d"
|
|
|
|
|