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The
following list comprises the most obvious symptoms of your machine being
invaded by any of the current crop of unwanted parasites out on the Net.
Having any of these symptoms is not necessarily the end of the world.
But any combination of 3-5 of them could be cause for concern.
These are for the most part the latest set
of common symptoms and while being so, that is not to say you may have
other symptoms. |
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The homepage of your
browser is changed suddenly, and you have no clue as to how it happened.
This is commonly called a
browser hijack, and there are
many of these infections, one of the first was
CoolWebSearch,
but these have all but disappeared from the threat landscape.
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You suddenly notice an
'extra' toolbar on IE and once again you didn't install it. Toolbar
infections are of a far and wide variety, coming in many forms and names.
You can also get these installed by not paying attention to some freeware
installs as well. Read about one of the latest
here.
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Your firewall alerts you to
an unknown program trying to access the Internet. This usually means
something has already gotten by your defenses and you need to take action,
and in many cases most infections rarely travel alone. Another firewall
indicator is that it is actually turned off by the malware. Many aggressive
malwares target multiple av\anti-spyware applications.
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New shortcuts appear on
your desktop or your task bar, or even your system tray that you didn't put
there nor know what they are. Nine times out of ten, these are some
sort of bogus security links or gambling link. Many cases rogue anti-spyware
throw a few on the desktop.
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New entries appear in your
favorites folder that you didn't put there. These are usually
gambling sites or porn related, occasionally security links.
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Your computer starts acting
sluggish and slow with massive CPU numbers. This could also be from any
number of unrelated reasons too, so this symptom in and of itself, may not
be an indication of malware problems.
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Excessive popup windows,
unable to stop or close. This particular symptom is rather now 'old
school'. Most infections these days install a bit more stealthily than they
used to. Rather than throw so many and make it obvious there is something
wrong, you're more likely to get just a few here and there. Still annoying
but not as openly obvious.
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If any of your security
tools have been disabled or open and close right away, this is a good sign
of nasties. Yes, that's right, as the media and security forums
have done a good job in educating users the only tactic left to the scumware
writers is to try to disable all security ware on the system.
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Every time you do a search,
you wind up at the same unusual and unknown web site-search engine, or you
get 1-3 pages of unrelated search results, before getting to your actual
search. Typically referred to as a 'search page hijack'. This is all
too
common a symptom of many malware infections.
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There is a new program or
multiple programs in the Add/Remove Programs section of your control panel.
If you're lucky, they will remove via Add\Remove, but more times than
not, this does not work.
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You're
unable to access any of these: task manager, regedit, MSCONFIG, control
panel, Run command and maybe even task bar....they
just pop up and disappear or they just can't be brought up at all. Another
popular indication is a message indicating the function has been disabled by
an 'administrator'. The idea behind this little trick is to prevent you from
being able to access key sections of your computer for removal of the
infection. Usually a special registry merge is required just to fix this
part, but we also have some special tools to fix several of these functions
in one step.
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Your desktop has been
changed to a web page or some type of notice that your PC is infected and
you cannot change it. There are several
alleged anti-spyware applications which actually do this. Imagine, claiming
to remove infections, when in fact they cause them!! Many of these are
listed on
Rogue Threat Page.
It is far more current than Eric Howe's list. That list has not been updated
since May '07, so the information contained on it is unreliable.
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You get a lot of returned
emails from people you don't know. This could be a sign of your machine
being a zombie.
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You begin to receive a
pop up balloon asserting that your system is infected with any number of
viruses or spyware. This one has been notorious since the middle of
'06. Typically they are called
Smitfraud\Zlob
infections
and an be removed relatively easily.
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Your system is sending
out large amounts of 'packets' or using excessive bandwidth. If you
have an advanced firewall or router, you may be able to monitor the amount
of actual data being transferred over your line. If these numbers are
excessive, you could have on board a hidden process or instance of Internet
Explorer, or an entire SMTP set up.
If you have multiple symptoms, its
possible you have more than just ad/mal/spyware. Then it's more likely you have
trojans or worms. Follow the steps on this page,
Infected, Now What?'
Expect repair to take some time. If your uncomfortable trying removal of an
infection, please post a HijackThis! logfile in
my forum.
See the
Latest Malware Threats
Forum
section to see if your the latest victim of a particular infection and to see if
we have a fix for it yet.
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