Class
Virus
Platform
HTML

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: HTML

Hypertext Markup Language (HTML) is the standard markup language for documents interpreted by web browsers. Markup of most web pages and web applications is written in HTML or XHTML.

Description

Technical Details

This is an overwriting HTML virus written by the same author. This virus, as well as the first one, looks for all HTML files in the current and parent directories and infects them. While infecting, the virus overwrites the contents of the file.

The virus body has the text comment "HTML.Offline v0.1" as well as reference to the virus author Web page.

HTML.Internal.c

This is a companion version of this virus family. It scans the current and parent directories for HTML files, renames them with an HTML extension and copies its body with the original name of the infected file. When the infection routine exits, the virus returns the control to the original HTML code by replacing the name of the active file.

Depending on the system's random counter, the virus displays the following MessageBox:

HTML.Redirect /1nternal

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