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QuirkyLoader Malware Distributes Multiple Payloads in Spam Campaigns

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📰 1 unique sources, 1 articles

Summary

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A new malware loader named QuirkyLoader has been used since November 2024 to distribute various payloads, including Agent Tesla, AsyncRAT, and Snake Keylogger, via email spam campaigns. The loader employs DLL side-loading and process hollowing techniques to inject malware into target processes. Two campaigns in July 2025 targeted Taiwan and Mexico, focusing on specific organizations and random infections, respectively. The loader is written in .NET languages with ahead-of-time (AOT) compilation, making it appear as native machine code. The campaigns highlight evolving phishing tactics, including QR code phishing (quishing) and precision-validated phishing.

Timeline

  1. 21.08.2025 13:41 📰 1 articles · ⏱ 26d ago

    QuirkyLoader Malware Loader Campaigns Target Taiwan and Mexico

    Since November 2024, QuirkyLoader has been used to distribute various malware payloads via email spam campaigns. Two campaigns in July 2025 targeted Taiwan and Mexico, with specific and random infection chains, respectively. The Taiwan campaign targeted Nusoft Taiwan employees with Snake Keylogger, while the Mexico campaign delivered Remcos RAT and AsyncRAT. The loader uses DLL side-loading and process hollowing to inject malware into target processes.

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Information Snippets

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