Isai
b73e6e2a57
* [Rule Tuning] AWS S3 Bucket Enumeration or Brute Force - changed to threshold rule to improve context - groups alerts by unique combination of `tls.client.server_name`(bucket name), `source.address` (can be either an ip or an internal AWS service address like ), and `aws.cloudtrail.user_identity.type` (this is to prevent capturing double events produced when a user Assumes a role inside another AWS account. This results in the same request being created twice, once as both AssumedRole and AWSAccount identity types) - uses `event.id` as the cardinality field and counts >= 40 - checks that`tls.client.server_name` exists in the query, this is to prevent capturing denied internal AWS actions that may occur against no particular bucket but against the S3 service itself - adds highlighted fields - replaces mitre technique - replaces more detailed investigation guide including specific details around investigating Threshold rule types via timeline * kuery language update * removing extra space * adding integration * removing filebeat because of tls.client.server_name removing filebeat because of tls.client.server_name * update IG references updated the references listed in the IG --------- Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
rules/
Rules within this folder are organized by solution or platform. The structure is flattened out, because nested file hierarchies are hard to navigate and find what you're looking for. Each directory contains several .toml files, and the primary ATT&CK tactic is included in the file name when it's relevant (i.e. windows/execution_via_compiled_html_file.toml)
| folder | description |
|---|---|
. |
Root directory where rules are stored |
apm/ |
Rules that use Application Performance Monitoring (APM) data sources |
cross-platform/ |
Rules that apply to multiple platforms, such as Windows and Linux |
integrations/ |
Rules organized by Fleet integration |
linux/ |
Rules for Linux or other Unix based operating systems |
macos/ |
Rules for macOS |
ml/ |
Rules that use machine learning jobs (ML) |
network/ |
Rules that use network data sources |
promotions/ |
Rules that promote external alerts into detection engine alerts |
windows/ |
Rules for the Microsoft Windows Operating System |
Integration specific rules are stored in the integrations/ directory:
| folder | integration |
|---|---|
aws/ |
Amazon Web Services (AWS) |
azure/ |
Microsoft Azure |
cyberarkpas/ |
Cyber Ark Privileged Access Security |
endpoint/ |
Elastic Endpoint Security |
gcp/ |
Google Cloud Platform (GCP) |
google_workspace/ |
Google Workspace (formerly GSuite) |
o365/ |
Microsoft Office |
okta/ |
Oka |