Posts Tagged ‘botnet’

High Quality Spam

Monday, May 24th, 2010

Looked at as art, most spam is the email equivalent of a two year old scribbling with a crayon. Every once in a while, though, we see something outstanding. In this post we’re going to give a shout out to a spammer who obviously cares about their work.

We grabbed a few examples of this campaign and most of them have fairly innocuous subjects that might be likely to get you to open the message like:

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GI Benefits Fraud

Wednesday, May 19th, 2010

This is another form of email fraud that really burns us.

We don’t really mind the fraud campaigns that seek to ensnare the greedy. If you’re dumb/greedy enough to believe that you won the lottery because of your email address; amoral enough to want to help smuggle someone else’s ill gotten gains for them or have done something that makes you believe someone would want to assassinate you then maybe you deserve to be fleeced.

Fraud that targets people who are looking for help is another matter and pretending to offer GI Benefits is particularly scummy.

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You Have Received a Greeting Card – Virus

Monday, May 17th, 2010

Another version of the Google Groups hosted virus is actively spreading.

This version also spoofs “123greetings.com” and arrives with a subject of:

Subject: You Have Received a Greeting Card

The contents of this version does not contain graphics, but is instead all text:

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You Received Online Greeting Card – Virus

Friday, May 14th, 2010

Note right off that this virus/trojan email has a Subject line of:

You Received Online Greeting Card

not

You Received An Online Greeting Card

Right away you should be alerted that this is not likely a legitimate greeting.  The image contained in the email appears to be one actually used by 123Greetings.com:

http://i.123g.us/c/efeb_cuddleday/card/104506.gif

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Account Notification – Triple Threats

Tuesday, April 27th, 2010

Now we have an apparent “kitchen sink” Trojan and virus attack where the spammers are throwing multiple attack vectors within the same campaign and are just hoping something sticks.

The emails are sent from a remarkably wide variety of infected mail servers and individual personal computers spanning the globe. They are spoofing everything from completely random email addresses to claiming to come from the recipient’s own email account.

What is consistent within the current campaign now circulating is that they will include your domain in the subject line, followed by the phrase “account notification” such as:

Subject:      yourdomain.com account notification

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You Have Received a Greeting Card

Thursday, April 8th, 2010

An oldie but a goodie, the Greeting Card Virus is back.  The current campaign spoofs your own address as the sender, or uses a random address pretending to be from your same domain. For example:

Subject:      You Have Received a Greeting Card
From:     “123greetings.com” <administrator@YourDomain.com>
To:     <administrator@YourDomain.com>

Notice that the “Pretty From Address” claims to be from “123greetings.com” when if fact these emails are not from 123greetings.com nor are they actually from your own domain. Instead the infection is spread by infected personal computers that are now zombie machines as part of a larger bot-net.

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What is wrong with you people?!

Thursday, April 1st, 2010

According to a recently published Messaging Anti-Abuse Working Group (MAAWG) survey, “half of email users in North America and Western Europe have opened or accessed spam and large proportions, representing tens of millions, have taken action like clicking on links or opening attachments”. Worse yet, nearly half of those did so on purpose “to unsubscribe, out of curiosity, or out of interest in the products or services being offered.”

We have to wonder if these same people would leave the keys in their cars to find out if there are really car thieves or would by a luxury watch from a guy on a street corner?

Probably not, as they would likely see the inherent danger in the physical world. However, in a world where most financial transactions are handled electronically, inviting strangers into your computer is an equally bad idea. more »

Online order for airplane ticket – Virus

Tuesday, March 30th, 2010

It’s back….. the email confirmation (really a Trojan/Virus) for the airline ticket you never purchased is again making the rounds.

The subject line is pretty straightforward:

Online order for airplane ticket N648365

Though the “order number” at the end is randomized in order to try and evade some of the simpler spam filtering systems.

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RIP Internet Explorer 6

Thursday, March 4th, 2010

A few weeks ago we posted about Internet Explorer’s most recent vulnerability issue. In that post we noted that IE’s security problems allow millions of computers to be turned into  zombie slaves for spammers and other unsavory elements on the Internet. This week one of the worst offenders in the IE family is being buried in effigy by Denver based design firm Aten Design Group. more »

Should ISPs Block Port 25?

Monday, February 22nd, 2010

According to ISPreview, Trend Micro has apparently agitated British ISP’s by suggesting that they block their user’s port 25 SMTP access to external mail servers (connections to the ISP’s own mail servers would not be affected).

The suggestion was offered as a tactic to prevent botnets of infected personal computers from connecting to external mail servers, which is how many spammers send such massive amounts of junk email.

Interestingly, a number of articles and blog posts have been published recently that stand in opposition to this proposal, such as these articles on AllSpammedUp and ComputerWeekly.

Most of what we’ve read on the subject so far doesn’t answer the question as to whether blocking Port 25 is a good idea or not. What is clear is that very few people, even those with technical backgrounds, actually understand the issue.

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