Nerdism at its best

March 10, 2014

How Does Spyware, Malware or Crapware Get on My Computer?

Have you ever wondered how malware, spyware, scareware, crapware, or other undesirable software might get on a computer? I will illustrate how easily your system can be infected.

My example system, running Windows 7, was set up from a worst case scenario point of view: Someone who was only interested in quickly getting to all the “fun stuff” on the internet with absolutely no concern for personal or computer security.

Freshly Installed – Pre Malware

Here you can see the number of processes (and type) that were running on our freshly installed Windows 7 system. The install was so fresh that the only protection that this system had was the Windows Firewall and Windows Defender to keep the malware and virus hordes at bay.


How Some Malware Gets On Your Computer

Malware, spyware, and other junk software makes it onto your computer for a number of reasons:

  • You installed something you really shouldn’t have, from an untrustworthy source. Often these include screensavers, toolbars, or torrents that you didn’t scan for viruses.
  • You didn’t pay attention when installing a “reputable” application that bundles “optional” crapware.
  • You’ve already managed to get yourself infected, and the malware installs even more malware.
  • You aren’t using a quality Anti-Virus or Anti-Spyware application.

Watch Out for Insidious Bundled Crapware

One of the biggest problems recently is that the makers of popular software keep selling out, and including “optional” crapware that nobody needs or wants. This way they profit off the unsuspecting users that aren’t tech-savvy enough to know any better. They should be ashamed.

In my example system I installed Digsby Messenger, a very popular “reputable” application. This was the regular install version and as you can see in the following screenshots, there are attempts to get you to install undesirable software or make “not so good” changes on your computer. If a person is not careful, then their system becomes infected.

Here you can see the attempt to add the “ Toolbar” to your browser(s)…definitely not good! Notice that while it does state that the software may be removed later, some people may 1.) Not notice it (lack of attention), 2.) Be in too much of a hurry to install the software to notice, or 3.) Not be familiar or comfortable with removing the software after it is already installed on their system.

The real trick with Digsby (and other software that is set up with the same installation style) is that clicking on “Decline” still allows the installation of Digsby itself to proceed. But can you imagine how things can end up for those people who may think or believe that the only way to get Digsby or similar software installed is to click on “Accept”? It has a really deceptive style!

If you have many programs that attempt to install “value-added” software like this on your system, you will quickly find that the majority (or all) of your operating system’s resources are being used up by malware (i.e. background processes). You are also likely to find that you will have unstable or very sluggish browser response, and are likely to have your personal and computer’s security compromised.

Just How Quickly Can a System Become Infected?

It only took 2.5 hours to reach the level described …simply surfing wherever for “whatever looked interesting or different”, downloading things like screensavers, file-sharing applications, and installing questionable software from advertisements.

The possibilities for becoming infected with viruses or malware were rather high with little to no protection or forethought given concerning what was installed or for the websites visited. Searches for various “less than desirable” pictures, screensavers, clicking on ads, etc. made it very easy to find trouble…perhaps the better way to phrase that is that it was very easy for trouble to find my example system.

Here you can see a screenshot of the desktop of my example system. Notice that there are icons for file sharing programs, fake anti-malware programs, icons for various screensavers, less than nice websites (possible additional infection vectors), and a virtual dancing woman. Nothing good here!

infested04.pngA quick look at an over abundance of toolbars plaguing Internet Explorer…by this point the browser was already having some problems starting properly (very slow), some episodes of crashing, and some browser hijacking had occurred.

infested06A Good Look at Scareware

What is scareware? It is software that once installed on your system will try to trick you into believing that you have a highly infected system with some very high “numbers of infections” found. These programs will constantly bother you to register and purchase the software in order to clean up your computer system.

Here you can see two examples of well known scareware. SpywareStop and AntiSpyware 2009. Do not be surprised if you notice that these two “separate” softwares seem to be extremely alike in looks, style, and operation. They are exactly alike…the same wolf just different sheep skins. This is a common practice to stay ahead of legitimate anti-malware and anti-virus software and not be deleted before hopefully being purchased by unsuspecting computer users.

A good look at the two screens that appeared every time I started my example system…absolutely no hesitation to “remind us” how infected our computer was and that we should register the software now.

infested08A Look at the Processes Running After Infection

Compare the screenshot of running processes shown at the beginning of this article and then the running processes shown here. You can already see a significant increase. Not good for you or your computer!



While nothing super horrible got onto my example system within those 2.5 hours, it is still easy to see just how quickly a system can start to become a mess. Imagine a system that has been exposed for a much longer period of time and is heavily infected! The best approach is to avoid trouble from the beginning.

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