Sigma rule: AWS GuardDuty Important Change

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9d3b372e4361, updated 2022-10-09T00:00:00.000Z.

Rule

Title
AWS GuardDuty Important Change
Status
test
Level
high
Author
faloker
Date
2020-02-11
Modified
2022-10-09
File
rules/cloud/aws/cloudtrail/aws_guardduty_disruption.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects updates of the GuardDuty list of trusted IPs, perhaps to disable security alerts against malicious IPs.

Log source

product
aws
service
cloudtrail

Detection

selection_source:
    eventSource: guardduty.amazonaws.com
    eventName: CreateIPSet
condition: selection_source

False positives (as the rule lists them)

  • Valid change in the GuardDuty (e.g. to ignore internal scanners)

Tags

  • attack.defense-impairment
  • attack.t1685

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_guardduty_disruption.yml

Sources and licences

  • SigmaHQ

    "AWS GuardDuty Important Change" by faloker (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_guardduty_disruption.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: AWS GuardDuty Important Change",
entity page, dataset version ref-9d3b372e4361, updated 2022-10-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/6e61ee20-ce00-4f8d-8aee-bedd8216f7e3 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 6e61ee20-ce00-4f8d-8aee-bedd8216f7e3, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.