Virus Database

V.1253

Description V.1253

It is a memory resident very dangerous multipartite virus. It hooks INT 8, 13h, 21h and infects .COM files that are executed, boot sectors of the floppy disks and the MBR of the hard drive. It erases some sectors on the hard drive.

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PG

Description PG

It's a harmless memory resident boot virus. It hooks INT 13h and writes itself into boot sectors of floppy disks and first boot sector of hard drive. Original sector is stored at the last disk sector. This virus contains internal text string: "PG".

Ph33r

Description Ph33r

It is a harmless memory resident parasitic virus. While executing an infected program the virus hooks INT 21h and stays memory resident. In case of DOS host file the virus uses the standard methods of the INT 21h hooking, in case of NewEXE file the virus uses DPMI calls.
While opening, execution, renaming executable files including NewEXE, and on changing the file attributes the virus writes itself at the end of the file. The virus checks the file length and infects only *.DL*, *.CO* and *.EX* files. The virus does not infect the *AV.*, *DV.*, *AN.*, *OT.* files.
While executing COM and EXE files the virus writes itself to the end of the file. While infecting a NewEXE file the virus moves NE header 8 bytes up, creates new descriptor there, and writes itself the end of the file.
The virus does not manifest itself. It contains the text strings:
=Ph33r=
Qark/VLAD

On October 21st "Ph33r.1460" displays:
Cheng Cheng:
Happy Birthday to you, HandSome Boy!

This virus also contains the text:
> Joan for Windows v1.0 of T.N.T. Taipei/Taiwan 1995/09 <

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