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[>_] ROOM · Malware Analysis
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.
Room tasks
1What Is API Monitoring and Why Does It Matter
2Common Malicious API Call Patterns
3Monitoring with Process Monitor and API Monitor
4Guided Lab: Building a Behavioral Timeline from API Calls
Frequently Asked Questions
What is API hooking?
API hooking redirects calls to Windows functions through custom code so behaviour can be observed or altered. Sandboxes and debuggers use it to log what malware does, such as file, registry and network actions.
How does inline patching work?
Inline hooking overwrites the first bytes of a function with a jump to the monitoring code, which then returns to the original function. It is a common technique in sandboxes, EDR products and malware.
Why monitor API calls during malware analysis?
API calls reveal intent, from creating processes to contacting servers, even when the code is obfuscated. This advanced Codelivly room is free and shows how that monitoring is built and sometimes evaded.