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These resources are intended to guide a SIEM team to...

  • ... develop a workflow for content creation (and retirement) in the SIEM and other security tools.
  • ... illustrate detection coverage provided and highlight coverage gaps as goals to fill.
  • ... eliminate or add additional layers of coverage based on organizational needs.
  • Ensure proper logs are generated and recorded for sufficient detection, investigation, and compliance.

Preparation, Prerequisites, etc.

Without covering the basics, there isn't much point in having a SIEM. Harden your environment and configure appropriate auditing on all endpoints.

Hardening

To detect an attacker, one must be equipped with the necessary logs to reveal their activities. Here we use a matrix to map detection tactics to attacker tactics (Mitre ATT&CK).

Once necessary logs are collected (detection tactics), use various methods to reveal anomalous, suspicious, and malicious activity.

Detection Use Cases

Use Cases provide a means to document solutions for many reasons including tracking work, uniform response, content recreation, metrics & reporting, making informed decisions, avoiding work duplication, and more.

Data Enrichment

These efforts can provide significant benefits to some ingested logs. Typically enrichment will result in either adding a new field to events or a lookup table for use in filtering or filling in a field.

Set up a lab with a Windows system, a SIEM, and an attacking system to aid in detection research and development.

TODO

  • Add Use Case Examples
  • Add Threat Hunts Library
  • Add an object oriented, relational database approach to recording and associating all elements to one another - cases, adversaries, techniques, mitigations, detections, hunts, log sources, etc.