AWS WAF Rule or Rule Group Deletion

 1[metadata]
 2creation_date = "2020/06/09"
 3integration = ["aws"]
 4maturity = "production"
 5updated_date = "2024/05/21"
 6
 7[rule]
 8author = ["Elastic"]
 9description = "Identifies the deletion of a specified AWS Web Application Firewall (WAF) rule or rule group."
10false_positives = [
11    """
12    WAF rules or rule groups may be deleted by a system or network administrator. Verify whether the user identity, user
13    agent, and/or hostname should be making changes in your environment. Rule deletions by unfamiliar users or hosts
14    should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
15    """,
16]
17from = "now-60m"
18index = ["filebeat-*", "logs-aws.cloudtrail-*"]
19interval = "10m"
20language = "kuery"
21license = "Elastic License v2"
22name = "AWS WAF Rule or Rule Group Deletion"
23note = """## Setup
24
25The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
26references = [
27    "https://awscli.amazonaws.com/v2/documentation/api/latest/reference/waf/delete-rule-group.html",
28    "https://docs.aws.amazon.com/waf/latest/APIReference/API_waf_DeleteRuleGroup.html",
29]
30risk_score = 47
31rule_id = "5beaebc1-cc13-4bfc-9949-776f9e0dc318"
32severity = "medium"
33tags = [
34    "Domain: Cloud",
35    "Data Source: AWS",
36    "Data Source: Amazon Web Services",
37    "Use Case: Network Security Monitoring",
38    "Tactic: Defense Evasion",
39]
40timestamp_override = "event.ingested"
41type = "query"
42
43query = '''
44event.dataset:aws.cloudtrail and event.provider:(waf.amazonaws.com or waf-regional.amazonaws.com or wafv2.amazonaws.com) and event.action:(DeleteRule or DeleteRuleGroup) and event.outcome:success
45'''
46
47
48[[rule.threat]]
49framework = "MITRE ATT&CK"
50[[rule.threat.technique]]
51id = "T1562"
52name = "Impair Defenses"
53reference = "https://attack.mitre.org/techniques/T1562/"
54[[rule.threat.technique.subtechnique]]
55id = "T1562.001"
56name = "Disable or Modify Tools"
57reference = "https://attack.mitre.org/techniques/T1562/001/"
58
59
60
61[rule.threat.tactic]
62id = "TA0005"
63name = "Defense Evasion"
64reference = "https://attack.mitre.org/tactics/TA0005/"