php-malware-finder - Detect potentially malicious PHP files

项目说明

!Test Suite

PHP Malware Finder

What does it detect?

PHP-malware-finder does its very best to detect obfuscated/dodgy code as well as
files using PHP functions often used in malwares/webshells.

The following list of encoders/obfuscators/webshells are also detected:

* Bantam
* Best PHP Obfuscator
* Carbylamine
* Cipher Design
* Cyklodev
* Joes Web Tools Obfuscator
* P.A.S
* PHP Jiami
* Php Obfuscator Encode
* SpinObf
* Weevely3
* atomiku
* cobra obfuscator
* nano
* novahot
* phpencode
* tennc
* web-malware-collection
* webtoolsvn
* Kraken-ng

Of course it's trivial to bypass PMF,
but its goal is to catch kiddies and idiots,
not people with a working brain.
If you report a stupid tailored bypass for PMF, you likely belong to one (or
both) category, and should re-read the previous statement.

How does it work?

Detection is performed by crawling the filesystem and testing files against a
set
of YARA rules. Yes, it's that simple!

Instead of using a *hash-based* approach,
PMF tries as much as possible to use semantic patterns, to detect things like
"a $_GET is decoded two times, unzipped,
and then passed to some dangerous function like system".

Installation

From source

or replace the last 2 steps with go install github.com/j/php-malware-finder,
which will directly compile and install PMF in your ${GOROOT}/bin folder.

How to use it?

Or if you prefer to use yara:

Please keep in mind that you should use at least YARA 3.4 because we're using
hashes for the
whitelist system, and greedy regexps. Please note that if you plan to build
yara from sources, libssl-dev must be installed on your system in order to
ha for hashes.

Oh, and by the way, you can run the *comprehensi with make tests.

Docker

If you want to avoid having to install Go and libyara, you can also use our
docker image and simply mount the folder you want to scan to the container's
/data directory:

Whitelisting

Check the whitelist.yar file.
If you're lazy, you can generate whitelists for entire folders with the
generate_whitelist.py script.

Why should I use it instead of something else?

Because:

Licensing

PHP-malware-finder is
licensed
under the GNU Lesser General Public License v3.

The _amazing_ YARA project is licensed under the Apache v2.0 license.

Patches, whitelists or samples are of course more than welcome.

项目信息

开发语言：PHP

Star 数：1475

技术要点

该项目属于病毒分析方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Detect potentially malicious PHP files展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。