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AutoIT3[1] is a powerful language that helps to built nice applications for Windows environments, mainly to automate tasks. If it looks pretty old, the latest version was released last September and it remains popular amongst developers, for the good… or the bad! Malware written in AutoIt3 has existed since the late 2000s, when attackers realized that the language was easy to learn (close to basic) but can also compiled into standalone PE files! From a malware point of view, such executables make an extended use of packed data, making them more stealthy.