Files
sigma-rules/rules
Isai bfb29ecf37 [Rule Tuning] First Time Seen AWS Secret Value Accessed in Secrets Manager (#4992)
This rule is evaluating the "new terms" against every individual role session, rather than against the Role itself. This is causing a massive volume of alerts
- updated rule description and investigation guide
- reduced execution window and interval
- replaced new terms from `user.id` to combination of `cloud.account.id` and `user.name` to account for evaluation against Roles and in the event that separate AWS accounts under the same Org reuse IAM user names. This will only evaluate the Role instead of each individual role session, which should greatly improve performance.
2025-08-25 12:00:47 -04:00
..
2025-03-26 11:04:14 -04:00

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