F4.1403
Description F4.1403
It's a harmless memory resident parasitic encrypted virus. It hooks INT 08h, 12h, 13h, 21h and writes itself to the end of COM- and EXE-files that are executed. The string "F4" is present at the end of the infected files. It uses INT 12h handler for "Are you here?" call, INT 08h and INT 13h for manifestation: sometimes it seeks by the hard drive heads.
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Magdzie.1114
Description Magdzie.1114
This is a benign memory resident parasitic stealth virus. It hooks INT 21h and writes itself at the end of EXE-files that are closed. On execution or opening of infected file this virus disinfects it. This virus deletes CHKLIST.* files. On May, 27 it displays the message:
Magdzie T. - jutro Twoje urodziny!
Then it manifests itself by a video effect. It also contains the internal text strings:
PH
chklist?.*
Magick.412
Description Magick.412
It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE files while reading from them (DOS function Read, AH=3Fh). While infecting a file the virus uses undocumented System File Tables. The virus has bugs and may corrupt files while infecting them. The virus contains the text string:
Quantum Magick
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