title: AWS GuardDuty Important Change
id: 6e61ee20-ce00-4f8d-8aee-bedd8216f7e3
status: experimental
author: faloker
date: 2020/02/11
description: Detects updates of the GuardDuty list of trusted IPs, perhaps to disable security alerts against malicious IPs.
references:
    - https://github.com/RhinoSecurityLabs/pacu/blob/master/modules/guardduty__whitelist_ip/main.py#L9
logsource:
    service: cloudtrail
detection:
    selection_source:
        - eventSource: guardduty.amazonaws.com
    selection_eventName:
        - eventName: CreateIPSet
    condition: all of them
level: high
falsepositives:
    - Valid change in the GuardDuty (e.g. to ignore internal scanners)
tags:
    - attack.t1089