Details AntiFort.1110 This is a very dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. While executing a file with the name F77*.*, the virus deletes that file. On Mondays, the virus writes the following string to the end of the C:\AUTOEXEC.BAT file: @ECHO Y | FORMAT D: On Tuesdays, the virus modifies the Interrupt Timer by writing to the timer ports. The virus also contains the internal text strings: ANTI FORTRAN OF OVER-X C:\AUTOEXEC.BAT

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