Fr.1013
Description Fr.1013
It's a harmless memory resident parasitic virus. It hooks INT 21h and infects by a standard manner COM- and EXE-files on their execution or opening. It contains the internal word "FR".
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Fred.657
Description Fred.657
It's a harmless memory resident parasitic virus. It hooks INT 9, 13h, 21h and writes itself to the ends of the COM-files that are accessed. It doesn't manifest itself. It contains the internal text string: "Fred".
Freddy.1870
Description Freddy.1870
This is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files. The COMMAND.COM file is infected by a Lehigh algorithm, the length of this file doesn't grow.
This virus contains the text string "COMMAND.COM *.COM". It erases the disk sectors by the "Freddy Krg" strings.
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