Yara-Endpoint is a tool useful for incident response as well as anti-malware enpoint base on Yara signatures.
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README.md

YARA-ENDPOINT

⚠️ THIS PROJECT IS UNDER DEVELOPMENT. USE IT WITHOUT ANY WARRANTY.

Yara as Endpoint is not just an enpoint solution for scanning files, Yara-Enpoint can be used as incident handler solution. While you are in the middle of an incident you have to know what is the scope of it in terms to act properly. You can do that by running your IoC manually against all your assets or using Yara-Endpoint and do it automatically and centralized.

How does it work?

Yara-Endpoint follows a client-server architecture so it is really easy to deploy. But getting deeper Yara-Endpoint has two componets client and server. Both the server as well as the client are a standalone binaries, no installation needed!. The client only needs a couple of flags that indicates where is the server and which port should be used. On the other hand, the server reads its configuration from a file, but basicaly it exposes two ports one for the comunitacion with the clients and other for a web management interface.

Main features

Yara-Endpoint offers an easy solution as either antivirus like endpoint or incident response tool. In both cases the installation and deploy is really easy, we have already taken care of it, because we know that deploying this kind of things is a pain in the ass.

For now we have implemented the following features:

  1. There is no need to register endpoint first, start using it and configure the endpoints later.
  2. Scan files, directories or PID.
  3. Tag Endpoints according your needs.
  4. Tag rules according your needs.
  5. Manage everything from a web UI.

Requirements

We do not have a lot of requiremets but some would be:

  1. Execute the client as Administrator or root, if you want a full scan from the client.
  2. A MongoDB database to store data on the server.

How to build the project

Using XGO

We have develop a Makefile that uses a xgo to cross-compile Golang projects. Xgo is a Docker image with a full set of compilers and libraries already ready to cross compile. For example, it has gcc-mingw-w64, gcc-5-mips-linux-gnu, gcc-5-arm-linux-gnueabi, etc.

Using xgo project is really easy to cross compile any Golang project with C-like dependency since xgo cross compile the dependency and then cross compile statically your Golang project. This will generate a standalone binary with everything on it and ready to be executed on the target system.

The problem is that Yara does not use a standard Linux compilation way (configure && make && make install). Yara needs to run a bootstrap.sh before ./configure so xgo will fail. We have an issue for this matter.

The way that we solve this is modifying xgo project to run bootstrap.sh before ./configure. The counterpart of using the modified version of xgo is that you have to build the docker image first.

The targets for the Makefile are:

  • linux
  • linux-x86
  • linux-x64
  • darwin
  • darwin-x86
  • darwin-x64
  • windows
  • windows-x86
  • windows-x64

NOTE

We are unable to cross compile Yara-Endpoint for Linux targets using XGO. We are working on it, but for now you can compile Yara-Enpoint manually.

Manually

Other way to get the binaries is compiling the project manually.

  • First of all you have to compile and install Yara. Please follow the intructions here.
  • Seccond, you have to clone this repo o download it by running go get github.com/Yara-Rules/yara-endpoint.
  • Fourth, build the project it self by running make local. This will update the Go libraries before running the compile.

The final binary will be located in the build folder.

Installation

There is no need to install anything from Yara-Enpoint side as long as you meet the requirements.

⚠️REMEMBER⚠️

This project is under heavy development and a lot of things can change before releasing a final o stable version.

Example of usage

Server

./yep-server
{"level":"info","msg":"** Yara-Endpoint Server v0.1.0 **","time":"2018-03-13T22:05:00+01:00"}
{"level":"info","msg":"Starting TCP Server","time":"2018-03-13T22:05:00+01:00"}
{"level":"info","msg":"TCP Server started and listening on 0.0.0.0:8080","time":"2018-03-13T22:05:00+01:00"}
{"level":"info","msg":"Starting WEB Server","time":"2018-03-13T22:05:00+01:00"}
{"level":"info","msg":"WEB Server started and listening on localhost:8000","time":"2018-03-13T22:05:00+01:00"}
[Macaron] listening on localhost:8000 (development)
{"level":"info","msg":"Waiting for connections...","time":"2018-03-13T22:05:00+01:00"}

[...]

{"level":"info","msg":"[[::1]:65320] Processing Register command","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"[01C8GJY7ZJEZAFNE8XTXAA1NX6] Processing Ping command","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"[01C8GJY7ZJEZAFNE8XTXAA1NX6] Sending PONG due to no task assigned","time":"2018-03-13T22:05:59+01:00"}

Client

./yep -server localhost -port 8080
{"level":"info","msg":"*** Starting Yara-Endpint v0.1.0 ***","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Checking whether endpoint is registered","time":"2018-03-13T22:05:59+01:00"}
{"level":"warning","msg":"Configuration file not found.","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Endpoint no registered. Registering...","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Sending \u003cRegister\u003e command 1/3.","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Endpoint registered with ULID: 01C8GJY7ZJEZAFNE8XTXAA1NX6","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Endpoint got registered with ID: 01C8GJY7ZJEZAFNE8XTXAA1NX6","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Saving configuration to yara-endpoint.ini","time":"2018-03-13T22:05:59+01:00"}
{"level":"info","msg":"Sending PING command","time":"2018-03-13T22:05:59+01:00"}

Contributing

There are several ways to contribute to this project, the easy one will be by summting issues, but you can also do a pull request.

For a complete detail how to contribute please read CONTRIBUTING.md.

License

Copyright 2018 <Jaume Martin> <Marcos Sanchez>

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.