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Malware

Zumanek

According to ESET, this malware family was active exclusively in Brazil until the middle of 2020.

Zumanek is a Windows malware family.

Background

ESET reports that this malware family operated solely within Brazil up until mid-2020. A distinguishing trait is its string-obfuscation technique: it defines a separate function for every letter of the alphabet, then builds strings by calling the appropriate functions in order and concatenating their outputs.

Source: Malpedia (Fraunhofer FKIE).