Re:Malware identified in CCleaner 5.33
by digi_owl on Monday September 18, 2017 @06:02PM
(#15280078)
On the note of ISA cards, i once helped install a card on some school computers that inserted itself before the OS loaded and split the HDD in half. This so that on certain conditions a clean version of the OS etc could be loaded from the half that was hidden during normal use.
Well, things have been like that for a long time already. E.g. Thunderbyte used an ISA card in the early 90ies to insert itself before and outside the operating system [1].
Old anti-virus programs also used Terminate and Stay Resident (TSR) [2]
[1] https://en.wikipedia.org/wiki/ThunderByte_Antivirus
[2] https://en.wikipedia.org/wiki/MSAV