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Some HP laptops are hiding a deactivated keylogger

Some HP laptops are hiding a deactivated keylogger
From TechCrunch - December 11, 2017

Researcher Michael Myng found a deactivated keylogger in a piece of software found on over 460 HP laptop models. A full list of affected laptops is here. The keylogger is deactivated by default but could represent a privacy concern if an attacker has physical access to the computer.

Some time ago someone asked me if I can figure out how to control HPs laptop keyboard backlight, wrote Myng. I asked for the keyboard driver SynTP.sys, opened it in IDA, and after some browsing noticed a few interesting strings.

The strings led to something that appeared to be a hidden keyloggera program that sends typed characters to an attackerin a Synaptics device driver. Given that the decompiled code prepared and sent key presses to an unnamed target, Myng was fairly certain he had something interesting on his hands.

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