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HIDS全称是Host-based Intrusion Detection System,即基于主机型入侵检测系统,HIDS运行依赖这样一个原理:一个成功的入侵者一般而言都会留下他们入侵的痕迹。本人更倾向于通过记录主机的重要信息变更来发现入侵者。 本项目由两部分组成:一部分osquery、另一部分监控脚本来补充osquery规则的不足; 本文是第一部分osquery规则部分,实现绝大部分主机信息监控。

hids's Introduction

HIDS 0.1

HIDS运行依赖这样一个原理:一个成功的入侵者一般而言都会留下他们入侵的痕迹。本人更倾向于通过记录主机的重要信息变更来发现入侵者。 本项目由两部分组成:一部分osquery、另一部分监控脚本来补充osquery规则的不足; 本文是第一部分osquery规则部分,实现部分主机信息监控。

Author

咚咚呛

如有其他建议,可联系微信280495355

Support

满足如下安全需求

1、支持大部分Centos6-7、winodws系统等。
2、可记录主机的信息变更情况,如账户、进程、网络连接等等;
3、变更结果记录到日志中;

技术细节如下:

1、监控主机信息如下:
1)对公网访问的网络连接增加情况
2)进程增加情况
3)对外端口侦听增加情况
4)arp缓存变化情况
5)authorized_keys公钥差异变化
6)crontab定时任务差异变化
7)DNS映射表差异变化
8)etc_hosts信息差异变化
9)etc_services 差异变化
10)groups 本地系统组差异变化
11)iptables 防火墙差异变化
12)系统登录和登出差异变化
13)主机系统的主动路由表差异变化
14)应用程序和二进制文件设置为用户/登录启动项,差异变化
15)通过sudo作为其他用户运行命令的规则差异变化
16)主动插入主机系统的USB设备差异变化
17)本地系统用户组关系差异变化
18)系统用户差异变化

Test Environment

centos 7、6

Tree

osquery
----osquery.conf		   	   #osquery系统配置文件
----secrity.conf		   	   #安全监控规则

Deploy

1)根据系统同版本,下载osquery
$ wget https://s3.amazonaws.com/osquery-packages/centos7/x86_64/osquery-2.4.6-1.linux.x86_64.rpm 
$ wget https://s3.amazonaws.com/osquery-packages/centos6/x86_64/osquery-2.4.6-1.linux.x86_64.rpm
2)根据系统版本,安装osquery
$ sudo rpm -ivh centos6_osquery-2.4.6-1.linux.x86_64.rpm
$ sudo rpm -ivh centos7_osquery-2.4.6-1.linux.x86_64.rpm
3)拷贝 osquery.conf 和 secrity.conf 到 /etc/osquery/目录下
4)启动osquery服务
$ sudo /etc/init.d/osqueryd restart

Config

安全监控规则在文件secrity.conf中,可自行修改,其中包含主要几项,query、interval、removed。
query: 查询的SQL语句
interval: 查询间隔,单位时间为秒
removed: 是否生成减少的记录
如:
"users": {
  "query" : "select * from users;",
  "interval" : 3600,
  "removed": false
}

Log

默认日志结果存储在/var/log/osquer/osqueryd.INFO,其中保存了主机差异变化信息

Screenshot

安装完毕后,如下:

Screenshot

Screenshot

服务器启动后如下:

Screenshot

Screenshot

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