[Nfbf-l] FW: Dear Friends, I heard about this on CNN, so not the "Typical Vires scare"!!!

elizabeth McNally bethmac at bellsouth.net
Sun Sep 27 11:49:07 UTC 2009


We believe this is well worth reading.
IRS Scam Now World's Biggest E-mail Virus Problem Criminals are waging a
nasty online campaign right now, hoping that their victims'
fears of the tax collecter will lead them to inadvertently install malicious
software.
The , entering its third week now, is showing no signs of slowing down,
according to Gary Warner, director of research in computer forensics with
the University of Alabama at Birmingham. This accounts for about 10 percent
of the spam e-mail that his group is presently tracking, he said. "This is
the most prominent spam-delivered virus in the world right now," he said.
Since first spotting the spam on Sept. 9, antispam vendor Cloudmark has
counted 11 million messages sent to the company's nearly 2 million desktop
customers, said Jamie Tomasello, abuse operations manager with Cloudmark.
That number is "very high," she noted.
The messages typically have a subject line that reads, "Notice of
Underreported Income,"
and they encourage victims to either install the Trojan attachment or click
on a Web link in order to view their "tax statement." In fact, that link
takes the victim to a malicious Web site.
The IRS not to open attachments or click on links included in e-mail that
claims to come from the tax-collection agency.
What makes this campaign particularly ugly is that the malware that
accompanies the fake IRS messages is a variant of the hard-to-detect Zeus
Trojan. This software hacks into bank accounts and drains them of money as
part of a widespread financial fraud scheme. Researchers estimate that the
Zeus criminals are emptying more than a million dollars per day out of
victims' bank accounts with the software. Small businesses have been
particularly hard-hit by this fraud, because banks have sometimes held them
accountable for the losses.
Testing a recent variant of Zeus on the VirusTotal Web site, Warner found
that only five of the 41 antivirus detection systems used by VirusTotal
managed to spot it.
Although antivirus vendors have other techniques for blocking the malware --
they can stop people from visiting the malicious Web sites, for example --
the spam is giving the companies a run for their money.
"It's difficult to stay ahead of it via antivirus because the Zeus binaries
are changing a few times a day to evade detection," said Paul Ferguson, a
researcher with , via instant message. "It's definitely a problem."


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