School.403
Description School.403
It is a harmless nonmemory resident parasitic virus. It searches for .COM files and writes itself to the end of the file. It contains the text string:
File is overwrited by SCHOOL SUCK! virus. Finnish quality!
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Chcc.2662
Description Chcc.2662
It's a not memory resident very dangerous parasitic virus. It searches for .COM- and .EXE-files and writes its body at their ends. If no files are found the virus depending on some causes can corrupt the .COM-, .EXE-, .SYS- and .BAT-files. The infected files contain the words "COMEXESYSBAT" and "ChCC".
ChDir.422
Description ChDir.422
These are memory resident dangerous viruses. They hook INT 21h and on calls to ChangeDir (AH=3Bh) DOS function they search for .COM- and .EXE-files and overwrite block of code in the file middle. The infected files are not recoverable.
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