Mumblehard Malware Targets Linux and FreeBSD Servers
May 02, 2015
Thousands of computers and web servers running Linux and FreeBSD operating systems have been infected over past five years with sophisticated malware that turn the machines into spambots. The new Linux malware, discovered by the security researchers from the antivirus provider Eset, has been dubbed " Mumblehard " because it is Muttering spam from your servers , says Eset 23-page long report (PDF) titled "Unboxing Linux/Mumblehard." Researchers have logged more than 8,500 unique IP addresses during the seven months period of research that were hit by Mumblehard Linux malware and found over 3,000 machines joined them in the past three weeks. Mumblehard features two basic components: Backdoor Spamming daemon Both written in the Perl programming language and "feature the same custom packer written in assembly language." The backdoor allows hackers to infiltrate into the system and control the command and control servers, and t...
