Rasek.1490
Description Rasek.1490
This is a dangerous memory resident multipartite encrypted virus. While executing an infected file it writes itself to the MBR of the hard drive and hooks INT 13h, 12h. By hooking INT 13h this virus releases the stealth mechanism on reading the infected MBR. It also writes a trojan program to the floppy disk boot sectors. That program erases the hard drive FAT while loading from that floppy. Sometimes the virus also erases the FAT on loading from infected MBR.
By hooking INT 21h the virus infects COM and EXE files that are executed, it writes itself to the end of the files. The virus contains the text string "AND.COM" and does not infect the files that contains that string in their names (COMMAND.COM). The virus also contains the text strings:
RaseK v2.0,from LA CORUÑA(SPAIN).Mar93
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Del5th.773
Description Del5th.773
It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM files that are executed. The virus deletes every 5th file that is opened except *.386, *.COM, *.DLL, *.DRV, *.EXE and *.OV?.
Deliver.BlueShark.1771
Description Deliver.BlueShark.1771
This is a dangerous memory resident encrypted parasitic viruses. It hooks INT 21h and writes itself at the end of EXE-files are accessed. On November, 1st it overwrites the hard drive sectors with the strings:
! MAYBE ONE DAY WE BE UNITED !
then it plays the tune, displays the US national flag and the message:
!!! MY NAME IS DISKDELIVER * THIS IS ONLY BEGIN * I BE BACK !!!
It also contains the internal string:
""" CREATED BY BLUE SHARK - FINISHED 7.VIII.1994 15:30 - CIESZYN POLAND """
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