Christmas.868
Description Christmas.868
This is a non-dangerous memory-resident virus that by a standard manner hits .COM- and .EXE-files when they are loaded into memory (the length of the .EXE-files before they are infected increases up to the next multiple of a block - 200h). Before infecting the next file, this virus displays the character '#'. From the 23rd of every month, this infector plays a Russian Christmas tune. The virus hooks INT 21h.
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Tedy.4350
Description Tedy.4350
It is a very dangerous memory resident parasitic polymorphic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are accessed by FindFirst/Next ASCII DOS calls (INT 21h, AH=4Eh, 4Fh).
The virus deletes the CHKLIST.MS file. On November 12th it overwrites the MBR of the hard drive with a program the displays the messages:
¡¡ TEDY, el primer virus interactivo de la computación. !!
Responda el siguiente custionario:
¿Los programas que usted usa son originales? [s/n]
5 archivos menos por mentiroso.
2 archivos menos por ladrón.
¿Los de Microsoft son unos ladrones? [s/n]
Te doy otra oportunidad para responder bien.
TEH.647
Description TEH.647
It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM files that are executed. It contains the text string:
TEH
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