AWS GuardDuty Important Change

calendar Oct 12, 2023 · attack.defense_evasion attack.t1562.001  ·
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Detects updates of the GuardDuty list of trusted IPs, perhaps to disable security alerts against malicious IPs.

Sigma rule (View on GitHub)

 1title: AWS GuardDuty Important Change
 2id: 6e61ee20-ce00-4f8d-8aee-bedd8216f7e3
 3status: test
 4description: Detects updates of the GuardDuty list of trusted IPs, perhaps to disable security alerts against malicious IPs.
 5references:
 6    - https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/guardduty__whitelist_ip/main.py#L9
 7author: faloker
 8date: 2020/02/11
 9modified: 2022/10/09
10tags:
11    - attack.defense_evasion
12    - attack.t1562.001
13logsource:
14    product: aws
15    service: cloudtrail
16detection:
17    selection_source:
18        eventSource: guardduty.amazonaws.com
19        eventName: CreateIPSet
20    condition: selection_source
21falsepositives:
22    - Valid change in the GuardDuty (e.g. to ignore internal scanners)
23level: high

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