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Storm worm strikes back at security pros
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Storm worm strikes back at security pros
Storm worm strikes back at security pros
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http://www.networkworld.com/news/2007/102407-storm-worm-security.html
By Tim Greene
Network World
10/24/07
The Storm worm is fighting back against security researchers that seek
to destroy it and has them running scared, Interop New York show
attendees heard Tuesday.
The worm can figure out which users are trying to probe its
command-and-control servers, and it retaliates by launching DDoS attacks
against them, shutting down their Internet access for days, says Josh
Korman, host-protection architect for IBM/ISS, who led a session on
network threats.
=E2=80=9CAs you try to investigate [Storm], it knows, and it punishes,=E2=80=9D he says.
=E2=80=9CIt fights back.=E2=80=9D
As a result, researchers who have managed to glean facts about the worm
are reluctant to publish their findings. =E2=80=9CThey=E2=80=99re afraid. I=E2=80=99ve never
seen this before,=E2=80=9D Korman says. =E2=80=9CThey find these things but never say
anything about them.=E2=80=9D
And not without good reason, he says. Some who have managed to reverse
engineer Storm in an effort to figure out how to thwart it have suffered
DDoS attacks that have knocked them off the Internet for days, he says.
As researchers test their versions of Storm by connecting to Storm
command-and-control servers, the servers seem to recognize these
attempts as threatening. Then either the worm itself or the people
behind it seem to knock them off the Internet by flooding them with
traffic from Storm=E2=80=99s botnet, Korman says.
A recently discovered capability of Storm is its ability to interrupt
applications as they boot up and either shut them down or allow them to
appear to boot, but disable them. Users will see that, say, antivirus is
turned on, but it isn=E2=80=99t scan for viruses, or as Korman puts it, it is
brain-dead. "It=E2=80=99s running, but it=E2=80=99s not doing anything. You can
brain-dead anything," he says.
The worm has created a botnet of slave machines whose latent size and
power is unknown. The number of infected machines available to launch
spam and DoS attacks is estimated from hundreds of thousands to 50
million. Korman says he believes it=E2=80=99s between 6 million and 15 million.
One intimidating aspect of the botnet the worm commands is that it is
used infrequently, indicating that it is for sale or lease to what he
terms =E2=80=9Cprofit nation=E2=80=9D -- computer hackers who do their work for money
not fame. The potential exists for the botnet to be used by political
entities for cyberterror attacks, he says.
=E2=80=9CIt=E2=80=99s getting more serious the more I look at it,=E2=80=9D Korman says. =E2=80=9CI=E2=80=99m
more concerned not so much about where Storm is today, but where it=E2=80=99s
going.=E2=80=9D
Still, the power of Storm, also known as Peacomm, is still hotly
debated. Earlier this week another expert said the worm had pretty much
run its course and was subsiding.
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