# API Call and Behavioral Monitoring

> Master the mechanics of API hooking and behavioral monitoring. Learn how debuggers and sandboxes intercept Windows APIs to trace malware execution and extract hidden logic.

Canonical: https://codelivly.com/rooms/api-call-and-behavioral-monitoring
Last updated: 2026-09-18

| | |
|---|---|
| Level | Advanced |
| Category | Malware Analysis |
| Lessons | 4 |
| Estimated time | 30 min |
| XP | 100 |

This advanced module dives deep into the underlying mechanics of dynamic analysis: API hooking and behavioral monitoring. You will learn how debuggers and automated sandboxes intercept Windows API calls (like CreateFile, VirtualAllocEx, and InternetOpen) to trace malware execution in real-time. The curriculum covers software vs. hardware hooking, inline patching, Import Address Table (IAT) manipulation, and how to write custom API monitors to bypass advanced evasion techniques. By mastering behavioral monitoring, you will be able to see exactly how malware interacts with the operating system, extract decrypted payloads at the exact moment of execution, and defeat sophisticated anti-analysis tricks.

## Lessons

1. What Is API Monitoring and Why Does It Matter (30 min)
2. Common Malicious API Call Patterns (30 min)
3. Monitoring with Process Monitor and API Monitor (30 min)
4. Guided Lab: Building a Behavioral Timeline from API Calls (30 min)

## Related

- [Learning path: Advanced Static and Dynamic Analysis](https://codelivly.com/learning-paths/advanced-static-and-dynamic-analysis)
- [All rooms](https://codelivly.com/rooms)