|Detected||Oct 26 2006 14:47 GMT|
|Released||Jan 17 2008 17:32 GMT|
|Published||Oct 26 2006 14:47 GMT|
This Trojan downloads files via the Internet without the user’s knowledge or consent. It is a Windows PE EXE file. The size of infected files may vary from 10KB to 51KB.
Once launched, the Trojan copies itself to the Windows system directory as under a variety of names. The original Trojan file is then deleted.
A .DLL file may be dropped to the Windows system directory. This file will infect the IEXPLORER.EXE process by opening it with all rights and injecting its code into the process’ address space.
IEXPLORER.EXE will then attempt to download other files from the Internet and launch them on the victim machine.
A remote malicious user may place other malicious programs on the links contained in the body of the Trojan.
Programs classified as Trojan-Downloader download and install new versions of malicious programs, including Trojans and AdWare, on victim computers. Once downloaded from the Internet, the programs are launched or included on a list of programs which will run automatically when the operating system boots up.
Information about the names and locations of the programs which are downloaded are in the Trojan code, or are downloaded by the Trojan from an Internet resource (usually a web page).
This type of malicious program is frequently used in the initial infection of visitors to websites which contain exploits.