Virus Database

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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not-virus:Joke.Win32.FakeFormat.a

Description not-virus:Joke.Win32.FakeFormat.a

Fake Format simulates the Windows format functionality.
Once the program is run, no matter which buttons are chosen, Fake Format starts to format the drive. The user is unable to stop, interrupt, or cancel this format. Once the fake formatting has been completed, the standard Windows format summary appears. Once the user has closed this summary screen, the button actually closes the program.

not-virus:Joke.Win32.JepRuss

Description not-virus:Joke.Win32.JepRuss
Jep/Russ is a joke program - it is not a virus or a Trojan program. It displays too scaring messages that can really frighten users. When this program launches it displays a standard message window with the text:
Please Wait. Initialisingall

In a moment it displays a dialog box with the following text:
Confirm Folder Delete
Are you sure you want to delete the folder [Windows] and all its contents ?
[Yes] [No]

The '[Windows]' reference designates the directory where Windows is installed. Regardless of a user's reaction, including sitting motionless afraid to touch any key, the program then displays the standard Explorer and 'File Deleting' windows and proceeds to emulate the file and folder deletion process. When the fake display indicates 'no files remaining', 'Jeb/Russ' displays the standard Windows shut-down menu with disabled (gray) [No] button and the following text:
Shut Down Windows
Windows has detected there is no system software on your computer

(*) Shut down the computer?
( ) Restart the computer?
( ) Close all programs and log on as a different user?

[Yes] [No] [Cancel]

The below message is then displayed:
Thank god this is only a game...

Note: The detection process for this joke program has been added to AVP database.

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