defensive-rce

Correlate web process spawning and command injection signals to detect RCE attempts.

1|Updated Apr 27, 2026
One-click install
npx skills add https://github.com/riparino/Claude-Cyber --skill defensive-rce
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: defensive-rce
Source: https://github.com/riparino/Claude-Cyber/tree/main/Claude-Blue/Skills/defensive-rce
Command: npx skills add https://github.com/riparino/Claude-Cyber --skill defensive-rce

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Detect and triage remote code execution attempts targeting web applications by correlating web process spawning, command injection signals, and webshell indicators.

Core Features & Use Cases

  • RCE detection: Identify web server process spawning unauthorized system utilities and suspicious child processes.
  • Webshell detection: Detect webshell deployment via file changes, YARA matches, and HTTP interactions.
  • Threat mapping: Align findings to MITRE ATT&CK T1190, T1505.003, T1059, with Sigma/KQL/YARA artifacts for SOC triage.

Quick Start

Load the full RCE detection methodology against your telemetry to trigger detections and triage incidents.

Frequently Asked Questions about defensive-rce

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect remote code execution attempts targeting web applications?

Detect remote code execution by correlating web server process spawning, command injection signals, and webshell indicators across Windows and Linux server logs to identify suspicious child processes and reverse shells.

Can I use KQL and Sigma rules to detect webshells in Azure Sentinel and MDE?

Yes, you can use KQL queries for MDE and Azure Sentinel alongside Sigma rules and YARA signatures to detect webshell deployment via file changes, HTTP interactions, and malicious process trees.

How do I triage command injection signals and web process spawning in Sysmon logs?

Triage command injection by correlating Sysmon process spawning logs with web server telemetry to identify unauthorized system utilities executing as child processes of web server workers.

What MITRE ATT&CK techniques are mapped for webshell and reverse shell detection?

Webshell and reverse shell detections map directly to MITRE ATT&CK techniques T1190, T1505.003, and T1059, aligning process execution and command injection findings for SOC triage.

Does this RCE detection methodology support both Windows and Linux web servers?

Yes, this RCE detection methodology applies across both Windows and Linux web servers using Sysmon, MDE, and web server logs to identify webshells and suspicious process trees.

What is the best way to correlate YARA signatures with webshell detection queries?

Correlate YARA signature matches with KQL and Sigma detection queries to identify webshell deployment via file changes and HTTP interactions, mapping results to ATT&CK T1505.003 for triage.