karton v5.0.1 releases: Distributed malware processing framework
Karton
Distributed malware processing framework based on Python, Redis, and MinIO.
The idea
Karton is a robust framework for creating flexible and lightweight malware analysis backends. It can be used to connect malware* analysis systems into a robust pipeline with very little effort.
We’ve been in the automation business for a long time. We’re dealing with more and more threats, and we have to automate everything to keep up with incidents. Because of this, we often end up with many scripts stuck together with duck duct tape and WD-40. These scripts are written by analysts in the heat of the moment, fragile and ugly – but they work, and produce intel that must be stored, processed further, sent to other systems, or shared with other organisations.
We needed a way to take our PoC scripts and easily insert them into our analysis pipeline. We also wanted to monitor their execution, centralise logging, improve robustness, reduce development inertia… For this exact purpose, we created Karton.
* while Karton was designed with malware analysis in mind, it works nicely in every microservice-oriented project.
Karton systems
Some Karton systems are universal and useful to everyone. We decided to share them with the community.
karton
This repository. It contains the karton.system service – main service, responsible for dispatching tasks within the system. It also contains the karton.core module, that is used as a library by other systems.
karton-dashboard
A small Flask dashboard for task and queue management and monitoring.
karton-classifier
The “router”. It recognises samples/files and produces various task types depending on the file format. Thanks to this, other systems may only listen for tasks with a specific format (for example, only zip archives).
karton-archive-extractor
Generic archive unpacker. Archives uploaded into the system will be extracted, and every file will be processed individually.
karton-config-extractor
Malware extractor. It uses Yara rules and Python modules to extract static configuration from malware samples and analyses. It’s a fishing rod, not a fish – we don’t share the modules themselves. But it’s easy to write your own!
karton-mwdb-reporter
A very important part of the pipeline. Reporter submits all files, tags, comments and other intel produced during the analysis to MWDB. If you don’t use MWDB yet or just prefer other backends, it’s easy to write your own reporter.
karton-yaramatcher
Automatically runs Yara rules on all files in the pipeline, and tags samples appropriately. Rules not included ;).
karton-asciimagic
Karton system that decodes files encoded with common methods, like hex, base64, etc. (You wouldn’t believe how common it is).
karton-autoit-ripper
A small wrapper around AutoIt-Ripper that extracts embedded AutoIt scripts and resources from compiled AutoIt executables.
DRAKVUF Sandbox
Automated black-box malware analysis system with DRAKVUF engine under the hood, which does not require an agent on guest OS.
Changelog v5.0.1
Bugfixes:
- Fixed bulk listing and removing objects from S3 (#198, thanks @Antelox!)
- Fixed
KartonTestCase.get_resource_sha256(#202, thanks @conitrade-as!)
Install & Use
Copyright (c) 2020, CERT Polska
All rights reserved.
