SIGMA Rules
1. 介绍
一种通用且开放的基于签名的规则格式,可以直接描述相关的日志事件。规则格式非常灵活,易于编写,适用于任何类型的日志文件。主要目的是提供一种结构化的形式,研究人员或分析人员可以在其中描述他们曾经开发的检测方法,并使其与他人共享。
Sigma支持主流的SIEM工具。它有以下优点:
- 它使分析能够在组织之间重复使用和共享。
- 高级通用分析语言
- 解决记录签名问题等最可靠的方法
- 纯文本YAML文件
2. 相关Presentation
https://github.com/Neo23x0/Talks/blob/master/Sigma_Hall_of_Fame_20211022.pdf
3. 举例:CVE-2009-3898的Sigma规则
title: Suspicious PsExec Executionid: c462f537-a1e3-41a6-b5fc-b2c2cef9bf82description: detects execution of psexec or paexec with renamed service name, this rule helps to filter out the noise if psexec is used for legit purposes or if attackeruses a different psexec client other than sysinternal oneauthor: Samir Bousseadendate: 2019/04/03references:- https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.htmltags:- attack.lateral_movement- attack.t1077logsource:product: windowsservice: securitydescription: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'detection:selection1:EventID: 5145ShareName: \\*\IPC$RelativeTargetName:- '*-stdin'- '*-stdout'- '*-stderr'selection2:EventID: 5145ShareName: \\*\IPC$RelativeTargetName: 'PSEXESVC*'condition: selection1 and not selection2falsepositives:- nothing observed so farlevel: high
4. 项目地址
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Last updated on 4/9/2023