Virus Database

DogLasi.1537

Description DogLasi.1537

It is not a dangerous memory resident partly encrypted parasitic virus. It hooks INT 22h, returns control to the host program, waits for termination call (INT 22h), then hooks INT 13h, 21h and writes itself to the end of COM and EXE files that are executed. Before return to the host file the virus also infects COMMAND.COM file by using the "COMSPEC=" pointer.
Depending on its counter the virus displays the message:
BUAA is very W.C. !!!
----DogLasi.H

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Hippie.a

Description Hippie.a

It is a harmless memory resident stealth boot virus. While loading from an infected disk it hooks INT 1Ch, 2Fh, waits for DOS loading process, hooks INT 13h and releases INT 1Ch. Then the virus infects the disks that are accessed. While loading from any infected disk the virus also infects the MBR of the hard drive. While infecting the MBR the virus uses direct calls to the hard drive ports.
Before installing memory resident the virus reserves a block of the system memory by decreasing the RamSize word at the address 0000:0413. When DOS loads itself into the memory, the virus restores RamSize and stays in the memory as a DOS block.
The virus contains the text strings:
DrW-4
RPL
Dr White - Sweden 1996
Hippie Virus - Written in MalmoallB01F

Hiroshima.826

Description Hiroshima.826

This is a very dangerous non-memory resident parasitic virus. It opens C:COMMAND.COM files, then writes itself to the end of the files. The virus does not affect any other files. Starting from August 6th at 2:14 p.m., the virus erases the hard drive sectors. The virus contains text strings, and the first string is encrypted:
PC Tools Deluxe R
c:command.com

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