Peter Dinham
Monday, 13 July 2009 16:27
Business IT -
Security
Page 2 of 2
“Currently we are observing a wave of fake Twitter
invitations that come carrying a mass-mailing worm. The observed
messages appear as if they have been sent from a Twitter account;
however, unlike a legitimate Twitter message, there is no invitation
URL present in the body. Instead, the user will see an attachment that
appears as a .zip file that purportedly contains an invitation card.”
In its report, Symantec says one mass-mailing
worm uses Michael Jackson's death as bait, with the worm sending out
spam emails with the subject “Remembering Michael Jackson” and an
attachment named “Michael songs and pictures.zip.” The .zip file, says
Symantec, contains another file called
“MichaelJacksonsongsandpictures.doc.exe,” which is a copy of the worm
that is executed on the user’s machine when the file is opened.
In another example, Symantec says a spammer, pretending to be a Michael
Jackson concert ticket officer based in London, sends out a message
that requests the recipient’s information in order to receive
reimbursement for the ticket. And, in a third example, spammers hide
behind a spoofed message, which appears as a rip-off of a familiar
social network notification, in an attempt to entice recipients to open
a malicious URL.
However, Symantec says that, at its peak, spam related to President
Obama during his first 100 days in office accounted for approximately
two percent of all spam messages, but, at this time, less than one
percent of all spam messages make reference to Michael Jackson’s life
and death.
Symantec warns, however, that as the interest surrounding Michael
Jackson’s life and death continues, Internet users should expect to
continue to see threats that try to play upon the emotions and
curiosity of the public around this event, and it advises email
recipients to be extra cautious about messages that “appear to be
related to Jackson’s death, especially any email that comes from an
unknown or unexpected source.”
The trend of spammers using attachment images to get the attention of
certain email users continues to re-emerge as a top spam threat.
There’s also a caution from Symantec alerting email users to a spam
trend involving the manipulation of images by using geometric shapes
and figures in the image background.
Symantec notes that, in the past, it has encountered background colour
blocks, wavy text and multi-coloured blurred backgrounds, and that
spammers are now using a combination of these tricks in the most recent
wave of attachment spam attacks.
According to Symantec, the spammers have also recently mutated the
image to include cartoon image comparisons of the male anatomy along
with the advertised website, using a .GIF formatted image attachment
with different coloured background and random lines.