Trieda.851
Description Trieda.851
It is a dangerous nonmemory resident parasitic virus. It searches for EXE files and writes itself to the end of the file. It contains the bug and may corrupt the files while infecting them. On June, 3rd it displays the message:
Trieda 4.C v tento den roku 1994 zapasila s maturitami a vyhrala !!!
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Smile.4320.a
Description Smile.4320.a
Smile is a not dangerous memory resident multipartite virus. On execution of infected file it writes itself into MBR of the hard drive and returns the control to the host program. On loading from infected MBR it hooks INT 1Ch and waits for DOS loading. Then it hooks INT 21h and writes itself at the beginning at the COM- and EXE-files. Sometimes it hooks INT 8 and plays something.
Smile_II.1113
Description Smile_II.1113
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed. The virus terminates "Delete File Using FCB" DOS calls (INT 21h, AH=13h) and displays the message:
Access denied
Depending on the system date it also hooks INT 1Ch and launches a "running face". The virus also contains the text:
Smile Virus.
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