defense_evasion_elasticache_security_group_creation.toml

[metadata]
creation_date = "2021/07/19"
integration = ["aws"]
maturity = "production"
updated_date = "2024/05/21"

[rule]
author = ["Austin Songer"]
description = "Identifies when an ElastiCache security group has been created."
false_positives = [
    """
    A ElastiCache security group may be created by a system or network administrator. Verify whether the user identity,
    user agent, and/or hostname should be making changes in your environment. Security group creations by unfamiliar
    users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the
    rule.
    """,
]
from = "now-60m"
index = ["filebeat-*", "logs-aws.cloudtrail-*"]
interval = "10m"
language = "kuery"
license = "Elastic License v2"
name = "AWS ElastiCache Security Group Created"
note = """## Setup

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
references = [
    "https://docs.aws.amazon.com/AmazonElastiCache/latest/APIReference/API_CreateCacheSecurityGroup.html",
]
risk_score = 21
rule_id = "7b3da11a-60a2-412e-8aa7-011e1eb9ed47"
severity = "low"
tags = ["Domain: Cloud", "Data Source: AWS", "Data Source: Amazon Web Services", "Tactic: Defense Evasion"]
timestamp_override = "event.ingested"
type = "query"

query = '''
event.dataset:aws.cloudtrail and event.provider:elasticache.amazonaws.com and event.action:"Create Cache Security Group" and
event.outcome:success
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1562"
name = "Impair Defenses"
reference = "https://attack.mitre.org/techniques/T1562/"
[[rule.threat.technique.subtechnique]]
id = "T1562.007"
name = "Disable or Modify Cloud Firewall"
reference = "https://attack.mitre.org/techniques/T1562/007/"



[rule.threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"