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BIOS Malware/Rootkit Anyone?

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Has anyone ever touched / seen / heard of an actual BIOS malware implementation? I've only read of malware that writes random data to the BIOS ROM.

I am guessing the BIOS manufactures' implementations are too ambiguous for any generic infection method to work such as the methods used on PE / ELF / Boot sectors.

Norton detected a trojan.mbr

Norton detected a trojan.mbr and a trojan.meboot. sorry, no samples =\

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Norton AntiVirus 2009

EFI

No... but the EFI technology can represent an interesting via to write malware on BIOS.

It's alive!

http://www.phrack.org/issues.html?issue=66&id=7

It's a lot easier than what I've heard before, and no EFI/ACPI required!