Fantastic Red-Team Attacks and How to Find Them

Fantastic Red-Team Attacks and How to Find Them

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Event Query Language

8 of 23

8 of 23

Event Query Language

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Fantastic Red-Team Attacks and How to Find Them

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  1. 1 Intro
  2. 2 What is Atomic Red Team?
  3. 3 Example Atomic Technique YAML attack
  4. 4 Easy to Automate, Chain Tests Together.
  5. 5 Frequently Missed MITRE ATT&CK Techniques Often leverage built-in native OS tools
  6. 6 Prepare For Actual Incidents
  7. 7 Atomic Red Team May Help Organizations Prepare
  8. 8 Event Query Language
  9. 9 Event Queries where
  10. 10 Sequences Match multiple events in order Shared properties with by syntax • Timeouts with maxspan 5m • Statefully expire sequences with until condition
  11. 11 Data Pipes Perform data stacking while hunting • Process results by filtering, counting and removing duplicates
  12. 12 Setting the Stage Windows endpoint with Sysmon installed Real background noise • Mixed data set, with true & false positives
  13. 13 Investigative Process
  14. 14 Guiding Questions • Is the path unexpected?
  15. 15 explicate parvuli What descendants were spawned from the interactive PowerShell console?
  16. 16 nota vocatio
  17. 17 DBGSRV: A Fantastic Red-Team Attack Think of this tool as giving you what is functionally equivalent to • Reverse TCP Connection • Process Hollowing • Whitelist Evasion
  18. 18 DBGSRV: Reverse TCP Connection
  19. 19 EQL Analytics Library
  20. 20 Identifying True Positives • Build a baseline of your environment • What do you find multiple times?
  21. 21 Pitfalls of Behavioral Detection • False positives from administrators and background software • Lack of context to improve detections
  22. 22 DIY Red & Blue team - Install and configure Microsoft Sysmon on a Windows endpoint
  23. 23 Conclusion • Understand what data sources you have • Focus on commonly seen behaviors • Practice on small known sets then scale up

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