Virus Database


Shel.983

Description Shel.983

It is a harmless memory resident encrypted parasitic virus. It hooks INT 21h and intercepts DOS calls Execute and ChangeDir. When such calls are performed, the virus searches for COM- and EXE- files, then writes itself to the end of the file. The virus does not infect the files: AI*.*, WP*.*, HI*.*, DO*.*, or KR*.*.
The virus contains the internal text string:
(?) Shel,NSTU,1994,v3.1
*.exe *.com
Sh

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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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