02:30 PM

Cyber Weapon Friendly Fire: Chevron Stuxnet Fallout

Malware's jump from Iranian uranium enrichment facility to energy giant highlights the downside to custom-made espionage malware -- its capability to infect friends as well as foes.

Who Is Hacking U.S. Banks? 8 Facts
Who Is Hacking U.S. Banks? 8 Facts
(click image for larger view and for slideshow)
The pioneering Stuxnet computer virus, which was designed to attack a single Iranian uranium enrichment facility, went on to infect PCs around the world. Security experts have identified thousands of resulting Stuxnet infections. On Monday, multinational energy giant Chevron became the first U.S. company to admit that it, too, was infected by Stuxnet.

Chevron found that some of its systems had been infected by Stuxnet soon after security firms discovered the virus in July 2010. "I don't think the U.S. government even realized how far it had spread," Mark Koelmel, general manager of the earth sciences department at Chevron, told The Wall Street Journal. "I think the downside of what they did is going to be far worse than what they actually accomplished," he said.

But according to Chevron spokesman Morgan Crinklaw, Stuxnet caused no damage to Chevron's network. "We make every effort to protect our data systems from those types of threats," he told The Wall Street Journal.

[ Read Flame Malware Code Traced To Stuxnet. ]

Confirmation that Stuxnet was designed by the U.S. government -- reportedly working with Israel -- came in June 2012 via journalist David Sanger, who reported that Stuxnet was developed as part of a classified cyberweapons program codenamed "Olympic Games," which was begun under President Bush and accelerated by President Obama. The malware was designed to forestall Israeli airstrikes against Iran, instead using a virus that sabotaged the high-frequency convertor drives used in centrifuges inside the Iranian nuclear facility at Natanz.

Stuxnet reportedly did disable a number of centrifuges at Natanz, but it also spread. "The fundamental problem with the use of viruses as weapons is that once deployed, one loses control of it. It is as likely to damage one's friends as one's enemies," said William Hugh Murray, an executive consultant and trainer in information assurance who's an associate professor at the Naval Postgraduate School, in a recent SANS Institute newsletter.

People with knowledge of the Olympic Games program, speaking to Sanger, did say that the virus had unexpectedly gotten out of control. But many security experts have disputed the notion that Stuxnet somehow broke loose unexpectedly, given that it was a virus incorporating multiple infection techniques, including the ability to exploit four zero-day vulnerabilities.

"'Escaped' continues to be a puzzling term when applied to a virus that relied on numerous Microsoft zero-day vulnerabilities and propagation vectors," said Sean McBride, the director of analysis for Critical Intelligence, in a SANS newsletter. "On the other hand, if your system was not the single underground facility in Iran that Stuxnet was intended to disrupt, the infection was benign. Such collateral damage is part of the price industry gets to pay for -- what was then -- two more years of Iran [being] without a nuclear weapon."

What remains worrying about Stuxnet is the ease with which the custom malware was able to surreptitiously alter the behavior of programmable logic controllers (PLCs) used in industrial control systems. As the Chevron infection highlights, PLCs aren't just used in uranium refineries, but for a broad range of applications -- spanning oil and gas enrichment, manufacturing plant floors and even prisons. Furthermore, businesses might replace their industrial control systems only every 10 or 20 years.

In the interim, what could safeguard PLC environments against future attacks of the Stuxnet variety, especially if launched by foreign adversaries? "There are no automated defense systems that can protect power systems and other critical infrastructure resources against these advanced attacks," said Alan Paller, director of research at the SANS Institute, in a SANS newsletter. "The only defense -- admittedly imperfect -- is radically improved technical skills."

Recent breaches have tarnished digital certificates, the Web security technology. The new, all-digital Digital Certificates issue of Dark Reading gives five reasons to keep it going. (Free registration required.)

Comment  | 
Print  | 
More Insights
Newest First  |  Oldest First  |  Threaded View
User Rank: Apprentice
11/18/2012 | 10:36:16 PM
re: Cyber Weapon Friendly Fire: Chevron Stuxnet Fallout
Stuxnet, Flame, and Duqu seem to be creations of the same entity based on their coding and methods of operation. For a quick rundown of how these worms and other malware work, have a look here:
User Rank: Strategist
11/12/2012 | 9:54:55 PM
re: Cyber Weapon Friendly Fire: Chevron Stuxnet Fallout
Wonder why Chevron decided to go public about this.
Register for Dark Reading Newsletters
White Papers
Current Issue
E-Commerce Security: What Every Enterprise Needs to Know
The mainstream use of EMV smartcards in the US has experts predicting an increase in online fraud. Organizations will need to look at new tools and processes for building better breach detection and response capabilities.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
Published: 2015-10-15
The Direct Rendering Manager (DRM) subsystem in the Linux kernel through 4.x mishandles requests for Graphics Execution Manager (GEM) objects, which allows context-dependent attackers to cause a denial of service (memory consumption) via an application that processes graphics data, as demonstrated b...

Published: 2015-10-15
netstat in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x, when a fibre channel adapter is used, allows local users to gain privileges via unspecified vectors.

Published: 2015-10-15
Cross-site request forgery (CSRF) vulnerability in eXtplorer before 2.1.8 allows remote attackers to hijack the authentication of arbitrary users for requests that execute PHP code.

Published: 2015-10-15
Directory traversal vulnerability in QNAP QTS before 4.1.4 build 0910 and 4.2.x before 4.2.0 RC2 build 0910, when AFP is enabled, allows remote attackers to read or write to arbitrary files by leveraging access to an OS X (1) user or (2) guest account.

Published: 2015-10-15
Cisco Application Policy Infrastructure Controller (APIC) 1.1j allows local users to gain privileges via vectors involving addition of an SSH key, aka Bug ID CSCuw46076.

Dark Reading Radio