Hackers Using New QuirkyLoader Malware to Spread Agent Tesla, AsyncRAT and Snake Keylogger

Aug 21, 2025

Cybersecurity researchers have disclosed details of a new malware loader called QuirkyLoader that’s being used to deliver via email spam campaigns an array of next-stage payloads ranging from information stealers to remote access trojans since November 2024.
Some of the notable malware families distributed using QuirkyLoader include Agent Tesla, AsyncRAT, Formbook, Masslogger, Remcos RAT,

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