Introduction

QuirkyLoader Unveiled A Modular Malware Loader Delivering Multi-Payload Attacks presents a concise and detailed picture of a modular loader observed since November 2024. This investigation synthesizes technical analysis and campaign reporting to explain how quirkyloader operates as a loader that leverages dll-side-loading, process-hollowing, aot compiled dotnet components and a flexible payload catalog that includes agent-tesla, asyncrat, snake-keylogger, remcos-rat, formbook, masslogger and rhadamanthys-stealer. The following material integrates threat-intelligence from ibm-x-force and related research while preserving evidence on email-spam delivery, targeted-campaigns, memory-resident execution, native-like-binaries appearance and high-level implications for credential-theft, keystroke capture and data-exfiltration.

Introduction

Avast has been recognized as the Best Antivirus by Software Experts for its exceptional threat detection capabilities, extensive platform support, and comprehensive privacy features. This recognition underscores the importance of robust cybersecurity solutions in today's digital landscape, particularly in combating malware, phishing, ransomware, and other online threats.