Mumblehard Malware Mugs Linux Servers

A family of Linux malware targeting Linux and BSD servers has been lurking around for five years, Eset has reported. Dubbed "Linux/Mumblehard," the malware contains a backdoor and a spamming daemon, both written in Perl. The components are mainly Perl scripts encrypted and packed inside an executable and linkable format, or ELF, said Eset. In some cases, one ELF executable with a packer nests inside another. An Eset sinkhole saw more than 8,800 unique IP addresses over seven months. Web servers are the most susceptible to the attack.

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