[metadata]
creation_date = "2020/06/15"
maturity = "production"
updated_date = "2020/12/09"

[rule]
author = ["Elastic"]
description = "Identifies the deletion of an AWS CloudWatch alarm. An adversary may delete alarms in an attempt to evade defenses."
false_positives = [
    """
    Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Alarm
    deletions from 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*"]
interval = "10m"
language = "kuery"
license = "Elastic License"
name = "AWS CloudWatch Alarm Deletion"
note = "The AWS Filebeat module must be enabled to use this rule."
references = [
    "https://awscli.amazonaws.com/v2/documentation/api/latest/reference/cloudwatch/delete-alarms.html",
    "https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_DeleteAlarms.html",
]
risk_score = 47
rule_id = "f772ec8a-e182-483c-91d2-72058f76a44c"
severity = "medium"
tags = ["Elastic", "Cloud", "AWS", "Continuous Monitoring", "SecOps", "Monitoring"]
type = "query"

query = '''
event.action:DeleteAlarms and event.dataset:aws.cloudtrail and event.provider:monitoring.amazonaws.com 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 = "T1562.001"
name = "Disable or Modify Tools"
reference = "https://attack.mitre.org/techniques/T1562/001/"


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

