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Amiga Plus 1995 #3 & #4
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Amiga Plus CD - 1995 - No. 3 and 4.iso
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anti-virus
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joshua 2
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Text File
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1995-07-20
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1KB
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46 lines
Name : Joshua 2
Aliases : Switch-Off
Type/Size : Boot/1024
Clones : No Clones
Symptoms : A Sprite will be moved over the screen.
Discovered : 03-04
Way to infect: Boot infection
Rating : Less Dangerous
Kickstarts : 1.2/1.3
Damage : Overwrites boot.
Removal : Install boot.
Comments : If you are booting with a Joshua 1-Virus infected
disk the virus allocates some chip-memory and
copies itself into this mem. After that the virus
changes the COLD-Vector to stay resident in memory.
To infect other disks the virus patches the
BeginIO()-Vector from the trackdisk.device (So NO
danger for HD-User!). Additionally the virus patches
the Vec5-Interrupt -> $94(a6) which moves after a
delay a sprite over the screen. The Sprite looks
like this:
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The whole virus is crypted depending of $DFF006.
A.D 05-94