Chips.877
Description Chips.877
Chips.877 is a very dangerous not memory resident parasitic virus. It searches for .COM-files and writes itself to their beginnings. It saves (file_length-1) bytes of file upon infection, it will hang up the computer. Sometimes this infector erases the disk sectors by string "chipshit!!?" and types:
Hej! Tu wirus Chipshit! Co sie stalo z Twoim dyskiem ?
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DiskBoomer.576
Description DiskBoomer.576
It is a very dangerous nonmemory resident parasitic virus. It searches for .COM files, then writes itself to the beginning of the file. After infecting, the virus deletes the anti-virus data files ANTI-VIR.DAT and CHKLIST.MS. On the 17th of any month the virus erases data on the C: drive and displays the message:
DISKBOOMER (C) 1995 RP Virus Lab Bucharest
DiskFiller
Description DiskFiller
This is a very dangerous stealth virus that hits Boot-sectors of floppy disks and the MBR of hard disks during access. This virus formats an additional track on the floppy disk (the 40th on 360K size and 80th on 1.2M) and then puts its code there. After that, the virus mounts its head part into the boot sector of the floppy, its original contents is practically unchanged. On a hard disk infection, the virus places its body just after the MBR. Inside the MBR, it changes the active boot sector address only and sets this address to the sector containing the beginning of the virus code.
When COMMAND.COM is started, the virus moves itself into the low address memory area. According to the system time it encrypts and displays the message: Haha,vírus van a gépben!! Ez egy eddig még nem közismert vírus. De hamarosan az lesz. A neve egyszerüen töltögetö Ezt a nevét onnan kapta, hogy feltöltögeti a FAT-táblát kölönbözö alakzatokkal. Ez már meg is történt !!!
and then "draws" in the FAT sectors the following picture:
****** ******
* ** *
* * * ** * * *
* ** *
* **** ** **** *
* * * *
**** ****
The virus also contains the string "command.com", hooks INT 13h,1Ch,21h.
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