Isai
133a0799cd
* [Rule Tuning] AWS IAM Assume Role Policy Update - changed time window to have only 1 minute lookback - changed the new terms field to look at combination of cloud.account.id, user.name, and roleName. This is to account for the problem with using user_identity.arn for AssumedRoles. Roles are identities in AWS that are granted a set of permissions and can then be assumed by various users across many different sessions. Each of these sessions is designated a session name which is attached to the `user_identity.arn`. This means that each time a Role is assumed, there is a unique user_identity.arn created. This rule is meant to capture unique instances of the Role itself which is captured separate from the individual session names in the `user.name` field. `cloud.account.id` has been added to the new_terms fields to account for organizations with multiple AWS account ids, which may reuse certain user.names across accounts. This may improve performance especially in environments where there are many users assuming the same role and updating it's trust policy as a part of normal operations. * remove markdown from description
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 |