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
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.Read more
Platform: Win32
Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.Description
Technical Details
This is a per-process memory resident parasitic poly-morphic Win32-virus. The virus infects PE EXE files that have .EXE filename extensions. When run, the virus infects files in current directory only.
The virus also stays in the system memory as a component of the infected host program, gains access to KERNEL functions and intercepts 10 of them: file opening, copying, moving functions, etc. When a PE EXE file is accessed by these functions, the virus infects it. As a result, the virus will infect all PE EXE programs that are accessed by infected the host program, and the virus will be active until the moment the host program exits. The virus also hooks, selecting a new directory function, and infects PE EXE files in there.
The PE EXE infection method is a complex and is similar to the Win32.Driller virus. The block of host file code that is overwritten by the virus poly-morphic routine in some cases may be also compressed during infection.
The virus also contains a backdoor routine that opens an Internet connection, waits for its author's instructions and then follows them: sends/receives files, executes programs, reports system information, etc.
The virus contains the following "copyright" text:
Intruder v.0.1 by Deviator//HAZARD
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