Ross Wolf
5fcece8416
Co-Authored-By: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-Authored-By: Craig Chamberlain <randomuserid@users.noreply.github.com> Co-Authored-By: David French <56409778+threat-punter@users.noreply.github.com> Co-Authored-By: Derek Ditch <dcode@users.noreply.github.com> Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>
55 lines
1.7 KiB
TOML
55 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2020/05/26"
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ecs_version = ["1.5.0"]
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maturity = "production"
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updated_date = "2020/05/26"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the deactivation of a specified multi-factor authentication (MFA) device and removes it from association with
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the user name for which it was originally enabled. In AWS Identity and Access Management (IAM), a device must be
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deactivated before it can be deleted.
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"""
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false_positives = [
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"""
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A MFA device may be deactivated by a system or network administrator. Verify whether the user identity, user agent,
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and/or hostname should be making changes in your environment. MFA device deactivations from unfamiliar users or
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hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
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""",
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]
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from = "now-20m"
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index = ["filebeat-*"]
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interval = "10m"
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language = "kuery"
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license = "Elastic License"
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name = "AWS IAM Deactivation of MFA Device"
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references = [
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"https://awscli.amazonaws.com/v2/documentation/api/latest/reference/iam/deactivate-mfa-device.html",
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"https://docs.aws.amazon.com/IAM/latest/APIReference/API_DeactivateMFADevice.html",
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]
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risk_score = 47
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rule_id = "d8fc1cca-93ed-43c1-bbb6-c0dd3eff2958"
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severity = "medium"
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tags = ["AWS", "Elastic"]
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type = "query"
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query = '''
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event.action:DeactivateMFADevice and event.dataset:aws.cloudtrail and event.provider:iam.amazonaws.com and event.outcome:success
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1531"
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name = "Account Access Removal"
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reference = "https://attack.mitre.org/techniques/T1531/"
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[rule.threat.tactic]
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id = "TA0040"
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name = "Impact"
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reference = "https://attack.mitre.org/tactics/TA0040/"
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