Virus.MSWord.Titasic

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.

Description

Technical Details

This is a quite complex macro-virus consisting of about 400 lines of code, and it contains about twenty macros and functions in one module "astia". It replicates upon document opening. It also creates the infected templates SNRML.SRC and SNRML.DOT in the Word startup directory.

The virus under different conditions displays several messages and manifests itself in several ways. For instance, upon the opening of the macro-diting Word menus, the virus displays MessageBox with Yes/No buttons:

Titasic
Maaf..
Anda jangan coba-coba mengedit, merubah, ataupun menghapus makro Titasic..!!
Anda hanya bisa merekam makro, menyimpan, menggunakan
serta menghapus makro buatan Anda
Apakah Anda ingin merekam makro..?

On "Yes", the virus inserts the string "'Macro non-Titasic'" into the current document.

Within 45 minutes following activation, it also manifests itself with a video effect.

Titasic.b (a.k.a. W97M.Astia.y and W97M.BMH)

This virus is very similar to the original one. The virus module has the "BmH" name, and upon opening the macro-editing Word menus, the virus displays a MessageBox with Yes/No buttons:

  MacroBasic
   Are you sure want to create a new macro?

On "Yes", the virus inserts the string "'MacroWordBasic'" into the current document.

In 15 minutes after activation, it also manifests itself with a video effect.

Titasic.e

Upon opening an infected document, this virus infects the global macros area (Normal template). Then it activates a timer that summons the main infection routine every seven minutes. This routine in an opened document deletes all macros, and then copies the virus macros from the global macros area.

The virus blocks Visual Basic Editor from opening by requesting a password, which is "azizoke".

Upon exiting Word, the virus checks the system time. If it is Friday or Sunday and earlier than 9:00 p.m., the virus displays following message:

 Ucapan Terimakasih
  Terimakasih buat dosenku yang amat sangat "bijaksana",
  yang telah memberiku nilai JELEK. Saya merasa bangga
  dan sungguh-sungguh bangga terhadap dosenku itu.
  Sekali lagi saya ucapkan terimakasih!.
  Semoga mereka tetap di STIKI.
  buat teman-teman, ma'af mengganggu.

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