Sigma rule: Potential Network Enumeration on AWS

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-02cfc5690fd9, updated 2023-03-24T00:00:00.000Z.

Rule

Title
Potential Network Enumeration on AWS
Status
unsupported
Level
low
Author
Janantha Marasinghe
Date
2022/12/13
Modified
2023/03/24
File
unsupported/cloud/aws_enum_network.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects network enumeration performed on AWS.

Log source

product
aws
service
cloudtrail

Detection

selection:
    eventSource: 'ec2.amazonaws.com'
    eventName:
        - 'DescribeCarrierGateways'
        - 'DescribeVpcEndpointConnectionNotifications'
        - 'DescribeTransitGatewayMulticastDomains'
        - 'DescribeClientVpnRoutes'
        - 'DescribeDhcpOptions'
        - 'GetTransitGatewayRouteTableAssociations'
timeframe: 10m
condition: selection | count() > 5

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.discovery
  • attack.t1016

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/unsupported/cloud/aws_enum_network.yml

Sources and licences

  • SigmaHQ

    "Potential Network Enumeration on AWS" by Janantha Marasinghe (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/cloud/aws_enum_network.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: Potential Network Enumeration on AWS",
entity page, dataset version ref-02cfc5690fd9, updated 2023-03-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c3d53999-4b14-4ddd-9d9b-e618c366b54d (accessed 2026-11-03).
Underlying source: SigmaHQ rule c3d53999-4b14-4ddd-9d9b-e618c366b54d, 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.