Exterminate It! Antimalware


Known threats:700,086 Last Update:March 16, 12:51


Just a quick word to say thanks. After trying unsuccessfully to remove some stubborn trojans with various other tools, Exterminate It has done the trick!

Nice work!



Aliases of DNSChanger (AKA):

[McAfee]DNSChanger.a, DNSChanger.c
[Other]W32/Backdoor.KGE, Win32/Alureon.AY, Trojan.Win32.DNSChanger.ef, Win32/Alureon.BJ, Win32/DNSChanger.B, DNSChanger.GQU, Trojan.Win32.DNSChanger.ik, Trojan Horse

How to Remove DNSChanger from Your Computer^

You can effectively remove DNSChanger from your computer with Exterminate It!.

After installing the program, run a scan to display a list of the files associated with DNSChanger in the Scan Result screen and remove these files. For information about running scans and removing malware files, see the Exterminate It! Help.


A trojan is a program that is disguised as legitimate software but is designed to carry out some harmful actions on the infected computer.

Unlike viruses and worms, trojans don’t replicate but they can be just as destructive.

These days trojans are very common. Trojans are divided into a number different categories based on their function or type of damage.

Be Aware of the Following Trojan Threats:

QSD7, NTIS, Serv.FTP.Server, SillyDl.AQR, Back.Construction.


Software that seizes control of a computer’s resources to proliferate itself or use them for other malicious purposes.

There are several types of hijackers. The most common are:

  • Browser hijackers – Alters the existing Internet browser settings so that a user is redirected to unwanted or malicious Web sites. These include programs that change the browser Home page or replace a popular search service’s home page with its own fake copy, whose search results point to particular malicious or irrelevant sites.
  • Autorun hijackers – Automatically run certain programs on start-up of a user’s computer.

Be Aware of the Following Hijacker Threats:

CWS, Myss.Variant, StartPage.gu, CleverIEHooker, Startpage.


A type of trojan. The primary purpose of downloaders is to install malicious code on a user’s computer. However, they can enable other malicious uses. For example, they can be used to continually download new versions of malicious code, adware, or “pornware.” They are also used frequently used to exploit the vulnerabilities of Internet Explorer.

Downloaders are typically written in script languages such as VBS or JavaScript.

Be Aware of the Following Downloader Threats:

Golgi, SillyDl.CGR, Small.et, Dos, SBlastr.

How Did My PC Get Infected with DNSChanger?^

The following are the most likely reasons why your computer got infected with DNSChanger:

  • Your operating system and Web browser's security settings are too lax.
  • You are not following safe Internet surfing and PC practices.

Downloading and Installing Freeware or Shareware

Small-charge or free software applications may come bundled with spyware, adware, or programs like DNSChanger. Sometimes adware is attached to free software to enable the developers to cover the overhead involved in created the software. Spyware frequently piggybacks on free software into your computer to damage it and steal valuable private information.

Using Peer-to-Peer Software

The use of peer-to-peer (P2P) programs or other applications using a shared network exposes your system to the risk of unwittingly downloading infected files, including malicious programs like DNSChanger.

Visiting Questionable Web Sites

When you visit sites with dubious or objectionable content, trojans-including DNSChanger, spyware and adware, may well be automatically downloaded and installed onto your computer.

Detecting DNSChanger^

The following symptoms signal that your computer is very likely to be infected with DNSChanger:

PC is working very slowly

DNSChanger can seriously slow down your computer. If your PC takes a lot longer than normal to restart or your Internet connection is extremely slow, your computer may well be infected with DNSChanger.

New desktop shortcuts have appeared or the home page has changed

DNSChanger can tamper with your Internet settings or redirect your default home page to unwanted web sites. DNSChanger may even add new shortcuts to your PC desktop.

Annoying popups keep appearing on your PC

DNSChanger may swamp your computer with pestering popup ads, even when you're not connected to the Internet, while secretly tracking your browsing habits and gathering your personal information.

E-mails that you didn't write are being sent from your mailbox

DNSChanger may gain complete control of your mailbox to generate and send e-mail with virus attachments, e-mail hoaxes, spam and other types of unsolicited e-mail to other people.