Virus.Win32.HLLP.Rile.a

tag:Executable   File   and   Boot   Viruses  

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This parasitic virus is written in Borland C Builder, and is coded to work on Windows NT platforms.

Infection method

The worm searches for PE EXE files. It copies these files to its body, and then replaces the original file with its altered body. This ensures that when an infected file is launched, the virus will first execute its own code, and then launch the original file. This means that the system will appear to be unaffected.

Given that the virus uses functions which are only available in Windows NT platforms, its effect on Windosws 9x platforms is more destructive. The virus will reduce the exe files to zero, which will destroy the operating system as a whole.

Payload

On the 26th of each month, at random intervals, the virus will force the mouse cursor to the top left corner of the screen. There is no other payload.

The virus shows that it is present in the system by frequent use of the hard disk.

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