Defensive Security Tooling: CAPA: The Basics (TryHackMe)

In this article, I will write a write-up for CAPA: The Basics that covers Tool Overview: How CAPA Works, Dissecting CAPA Results Part 1: General Information,, MITRE and MAEC, Dissecting CAPA Results Part 2: Malware Behavior Catalogue, Dissecting CAPA Results Part 3: Namespaces, Dissecting CAPA Results Part 4: Capability and More Information, More fun!.

1. What command-line option would you use if you need to check what other parameters you can use with the tool? Use the shortest format. -h

2. What command-line options are used to find detailed information on the malware's capabilities? Use the shortest format. -v

3. What command-line options do you use to find very verbose information about the malware's capabilities? Use the shortest format. -vv

4. What PowerShell command will you use to read the content of a file? Get-Content

5. What is the sha256 of cryptbot.bin? ae7bc6b6f6ecb206a7b957e4bb86e0d11845c5b2d9f7a00a482bef63b567ce4c

   

6. What is the Technique Identifier of Obfuscated Files or Information? T1027

7. What is the Sub-Technique Identifier of Obfuscated Files or Information::Indicator Removal from Tools? T1027.005

8. When CAPA tags a file with this MAEC value, it indicates that it demonstrates behaviour similar to, but not limited to, Activating persistence mechanisms? launcher

9. When CAPA tags a file with this MAEC value, it indicates that the file demonstrates behaviour similar to, but not limited to, Fetching additional payloads or resources from the internet? Downloader

10. What serves as a catalogue of malware objectives and behaviours? Malware Behavior Catalogue

11. Which field is based on ATT&CK tactics in the context of malware behaviour? Objective

12. What is the Identifier of "Create Process" micro-behavior? C0017

13. What is the behaviour with an Identifier of B0009? Virtual Machine Detection

14. Malware can be used to obfuscate data using base64 and XOR. What is the related micro-behavior for this? Encode Data

15. Which micro-behavior refers to "Malware is capable of initiating HTTP communications"? HTTP Communication

16. Which top-level Namespace contains a set of rules specifically designed to detect behaviours, including obfuscation, packing, and anti-debugging techniques exhibited by malware to evade analysis? anti-analysis

17. Which namespace contains rules to detect virtual machine (VM) environments? Note that this is not the TLN or Top-Level Namespace. anti-vm/vm-detection

18. Which Top-Level Namespace contains rules related to behaviours associated with maintaining access or persistence within a compromised system? This namespace is focused on understanding how malware can establish and maintain a presence within a compromised environment, allowing it to persist and carry out malicious activities over an extended period. persistence

19. Which namespace addresses techniques such as String Encryption, Code Obfuscation, Packing, and Anti-Debugging Tricks, which conceal or obscure the true purpose of the code? obfuscation

20. Which Top-Level Namespace Is a staging ground for rules that are not quite polished? Nursery

21. What rule yaml file was matched if the Capability or rule name is check HTTP status code? check-http-status-code.yml

22. What is the name of the Capability if the rule YAML file is reference-anti-vm-strings.yml? reference anti-VM strings

23. Which TLN or Top-Level Namespace includes the Capability or rule name run PowerShell expression? load-code

24. Check the conditions inside the check-for-windows-sandbox-via-registry.yml rule file from this link. What is the value of the API that ends in Ex is it looking for? RegOpenKeyEx

    

25. Which parameter allows you to output the result of CAPA into a .json file? -j

26. What tool allows you to interactively explore CAPA results in your web browser? CAPA Web Explorer

27. Which feature of this CAPA Web Explorer allows you to filter options or results? Global Search Box

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