Name: Selectron Famil Category: Viruses Description: Details Selectron Family These are not dangerous memory resident parasitic viruses. They hooks INT 21h and writes themselves to the end of COM ("Selectron.1800") or EXE files that are executed or opened. They contain the text strings: "Selectron.1112": (C) Selectronics Software "Selectron.1258": Digouter"01/15/88" (C) Selectronics Software "Selectron.1800": (C) Selectronics Software Virus has been disabled. Countdown to Extinctionall "Selectron.1112" also hooks INT 8, 9. On Sunday when Alt-Ctrl-Del keys are pressed, it manifests itself with the video and sound effects. "Selectron.1258" hooks INT 9, 10h, 1Ch. Under debugger is beeps with PC speaker and reboots the computer. When Alt-Ctrl-Del keys are pressed, it slowly turns the screen off by using VGA card features. "Selectron.1800" is the encrypted virus. On Friday, 13th or depending on the host file name the virus displays: Countdown to Extinction... and manifests itself with the sound and video effects.