Shake
Description Shake
This is a very dangerous memory resident parasitic virus. It hooks INT 21h. On GetDiskSpace DOS calls (INT 21, ah=36h) the virus searches for .COM files of the current directory, then writes itself to the end of the file. In infected files it sets the time to 60 sec. The virus hooks and does not restore INT 24h. When an infected program is executed, the virus with the probability of 1/16 displays:
Shake well before use
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Protect Family
Description Protect Family
These are dangerous memory resident parasitic viruses. They hook INT 21h and 1Ch or 33h depending on their versions, and then write themselves to the end of COM and EXE files that are executed.
"Protect.1157,1196" clear the file attributes and corrupt the mouse driver
(in the memory). "Protect.1355" manifests itself by a small and very
disgusting screen trembling.
The viruses contain the text:
File protection
Proto.695
Description Proto.695
It is a dangerous memory resident parasitic virus. It hooks INT 21h and write itself to the end of .COM files that are executed. Since 4pm it beeps and halts the computer. It also contains the text string:
This program is sick. [PROTO-T by Dumbco, INC.
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