ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДї
                    і        VIRUS REPORT         і
                    і         Black Hole          і
                    АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

Synonyms: the Russian Virus.

Host Machine: PC compatibles.

Derived from: Jerusalem-C

     This virus is the Jerusalem-C that has odd text and additional code
that is never referenced. A new interrupt eight routine is added to the
non-referenced area and a number of interrupt 21 calls which appear
meaningless. The additional text includes "ANTIVIRUS". It appears that
this virus is a modified version of the Jerusalem-C/New Jerusalem.

     Note that because of the difference in EGA and CGA int 10 usage,
Jerusalem A has been observed with the blackhole effect noted on an EGA
screen.


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є  This document was adapted from the book "Computer Viruses",       є
є  which is copyright and distributed by the National Computer       є
є  Security Association. It contains information compiled from       є
є  many sources. To the best of our knowledge, all information       є
є  presented here is accurate.                                       є
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є  Please send any updates or corrections to the NCSA, Suite 309,    є
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є  (202) 364-8252. This version was produced May 22, 1990.           є
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є  computer security. Membership in the association is just $45 per  є
є  year. Copies of the book "Computer Viruses", which provides       є
є  detailed information on over 145 viruses, can be obtained from    є
є  the NCSA. Member price: $44; non-member price: $55.               є
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є            The document is copyright (c) 1990 NCSA.                є
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є  This document may be distributed in any format, providing         є
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