Paris.4909
Description Paris.4909
It is a very dangerous nonmemory resident parasitic virus. It searches for COM and .EXE files (except IBMBIO.COM and IBMDOS.COM) of a subdirectory tree, then writes itself to the end of the file.
The virus changes the number of first cluster of some files, and these files stays inaccessible. This virus contains the text string:
IBMBIO COMIBMDOS COMAUTOEXECBATCOMMAND COMSYSEXECOM
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Jacov family
Description Jacov family
These are harmless nonmemory resident encrypted parasitic viruses. They search for COM and EXE files, then write themselves to the end of the file, minor virus versions infect EXE files only. The viruses do not manifest themselves in any way, they contain the text string:
[jacov] (c) 1997 gothmog
Jain Family
Description Jain Family
These are very dangerous memory resident parasitic viruses. They trace and hook INT 21h, then write themselves the end of COM- and EXE-files that are executed. On 1st of May ("Jain.1437"), 22nd of June ("Jain.1536"), and 13th of July ("Jain.1614") erase hard drive sectors ("Jain.1437,1536" have the bugs, and halt the system while erasing). The viruses contain the internal text strings:
"Jain.1437,1536": 12.04.1994
"Jain.1614": 12.04.1994 JAIN S.
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