Parent class: VirWare

Viruses and worms are malicious programs that self-replicate on computers or via computer networks without the user being aware; each subsequent copy of such malicious programs is also able to self-replicate. Malicious programs which spread via networks or infect remote machines when commanded to do so by the “owner” (e.g. Backdoors) or programs that create multiple copies that are unable to self-replicate are not part of the Viruses and Worms subclass. The main characteristic used to determine whether or not a program is classified as a separate behaviour within the Viruses and Worms subclass is how the program propagates (i.e. how the malicious program spreads copies of itself via local or network resources.) Most known worms are spread as files sent as email attachments, via a link to a web or FTP resource, via a link sent in an ICQ or IRC message, via P2P file sharing networks etc. Some worms spread as network packets; these directly penetrate the computer memory, and the worm code is then activated. Worms use the following techniques to penetrate remote computers and launch copies of themselves: social engineering (for example, an email message suggesting the user opens an attached file), exploiting network configuration errors (such as copying to a fully accessible disk), and exploiting loopholes in operating system and application security. Viruses can be divided in accordance with the method used to infect a computer:
  • file viruses
  • boot sector viruses
  • macro viruses
  • script viruses
Any program within this subclass can have additional Trojan functions. It should also be noted that many worms use more than one method in order to spread copies via networks.

Class: Virus

Viruses replicate on the resources of the local machine. Unlike worms, viruses do not use network services to propagate or penetrate other computers. A copy of a virus will reach remote computers only if the infected object is, for some reason unrelated to the virus function, activated on another computer. For example: when infecting accessible disks, a virus penetrates a file located on a network resource a virus copies itself to a removable storage device or infects a file on a removable device a user sends an email with an infected attachment.

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Platform: MSWord

Microsoft Word (MS Word) is a popular word processor and part of Microsoft Office. Microsoft Word files have a .doc or .docx extension.


Technical Details

This Word macro virus contains nine macros: FileSave, FileSaveAs, FileTemplates, ToolsMacro, ToolsCustomize, AutoExec, AutoClose, AutoOpen, FileOpen.

It infects global macros area on opening an infected document (AutoOpen) and infects other documents on opening, saving and saving with new name (FileOpen, FileSave, FileSaveAs).

On opening a document before infecting the virus deletes all macros in there (if they exist). When closing the virus rewrites the FileOpen macro (tries to protect itself against other viruses?)

On August 19 it displays the MessageBox:

Happy Birthday, Pakis Pratiwi...
Hari ini Pakis Pratiwi merayakan Hari Ulang Tahun... Matikan komputer,
tinggalkan semua pekerjaan, istirahatkan pikiran, ucapkan selamat kepada
Pakis Pratiwi.
On November 20 it displays the MessageBox:
Happy Birthday, NdeKlaimber...
Hari ini NdeKlaimber merayakan Hari Ulang Tahun... Matikan komputer,
tinggalkan semua pekerjaan, istirahatkan pikiran, ucapkan selamat kepada
Starting from 1998, starting from 19:00 the virus displays the UserDialog:
NdeKlaimber Menggugat ...
Berawal dari sebuah kepedihan... NdeKlaimberÖ dicampakkan dan
dihinakan... terpuruk bagaikan sampah busuk... NdeKlaimberÖ merintih
dengan segumpal dendam mendidih !!!
Kini saatnya NdeKlaimberÖ menunjukkan... masih adanya kekuatan untuk
membungkam mulut-mulut tak berperasaan... sebab hasrat untuk menjadi yang
terbaik adalah sesuatu yang sangat manusiawi... NdeKlaimberÖ manangis
harus melibatkan semua orang.
1997 NdeKlaimberÖ                  I'm Coming...

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