Category Archives: The Coming Storm

This category includes blog posts about computer and Internet security threats now and on the horizon.

Researchers Clobber Khelios Spam Botnet

March 28, 2012
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Experts from across the security industry collaborated this week to quarantine more than 110,000 Microsoft Windows PCs that were infected with the Khelios worm, a contagion that forces infected PCs to blast out junk email advertising rogue Internet pharmacies.

Most botnets are relatively fragile: If security experts or law enforcement agencies seize the Internet servers used to control the zombie network, the crime machine eventually implodes. But Khelios (a.k.a. “Kelihos”) was built to withstand such attacks, employing a peer-to-peer structure not unlike that used by popular music and file-sharing sites to avoid takedown by the music and entertainment industry.

Twitter Bots Target Tibetan Protests

March 20, 2012
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Twitter bots — automated accounts that auto-follow and send junk tweets hawking questionable wares and services — can be an annoyance to anyone who has even a modest number of followers. But increasingly, Twitter bots are being used as a tool to suppress political dissent, as evidenced by an ongoing flood of meaningless tweets directed at hashtags popular for tracking Tibetan protesters who are taking a stand against Chinese rule.

It’s not clear how long ago the bogus tweet campaigns began, but Tibetan sympathizers say they recently noticed that several Twitter hashtags related to the conflict — including #tibet and #freetibet — are now so constantly inundated with junk tweets from apparently automated Twitter accounts that the hashtags have ceased to become a useful way to track the conflict.

Half of All ‘Rogue’ Pharmacies at Two Registrars

March 12, 2012
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Half of all “rogue” online pharmacies — sites that sell prescription drugs without requiring a prescription — got their Web site names from just two domain name registrars, a study released today found. The findings illustrate the challenges facing Internet policymakers in an industry that is largely self-regulated and rewards companies who market their services as safe havens for shadowy businesses.

Banking on Badb in the Underweb

March 8, 2012
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Underground Web sites can be a useful barometer for the daily volume of criminal trade in goods like stolen credit card numbers and hijacked PayPal or eBay accounts. And if the current low prices at one of Underweb’s newer and… Read More »

Feds Request DNSChanger Deadline Extension

February 22, 2012
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Millions of computers infected with the stealthy and tenacious DNSChanger Trojan may be spared a planned disconnection from the Internet next month if a court approves a new request by the U.S. government. Meanwhile, six men accused of infecting and managing the huge collection of hacked PCs are expected to be extradited from their native Estonia to face charges in the United States.

Collaboration Fuels Rapid Growth of Citadel Trojan

February 9, 2012
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Late last month I wrote about Citadel, an “open source” version of the ZeuS Trojan whose defining feature is a social networking component where users can report and fix programming bugs, suggest and vote on new features in upcoming versions, and generally guide development of the botnet malware. Since then, I’ve been given a peek inside that social networking space, and it suggests that Citadel’s collaborative approach is fueling rapid growth of this new malware strain.

A customer who bought a license to the Citadel Trojan extended an invitation to drop in on that community of hackers. Those who have purchased the software can interact with the developers and other buyers via comments submitted to the Citadel Store, a front-end interface that is made available after users are validated through a two-step authentication process.

Crimevertising: Selling Into the Malware Channel

February 8, 2012
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Anyone who’s run a Web site is probably familiar with the term “malvertising,” which occurs when crooks hide exploits and malware inside of legitimate-looking ads that are submitted to major online advertising networks. But there’s a relatively new form of malware-based advertising that’s gaining ground — I’m calling it “crimevertising” for lack of a better term — that involves running otherwise harmless ads for illicit services inside of commercial crimeware kits.

At its most basic, crimevertising has been around for many years, in the form of banner ads on underground forums that hawk everything from hacking services to banking Trojans and crooked cashout services. More recently, malware authors have started offering the ability to place paid ads in the administrative panesl that customers use to control their botnets. Such placements allow miscreants an unprecedented opportunity to keep their brand name in front of the eyeballs of their target audience, and for hours on end.

Half of Fortune 500s, US Govt. Still Infected with DNSChanger Trojan

February 2, 2012
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More than two months after authorities shut down a massive Internet traffic hijacking scheme, the malicious software that powered the criminal network is still running on computers at half of the Fortune 500 companies, and on PCs at nearly 50 percent of all federal government agencies, new research shows.

The malware, known as the “DNSChanger Trojan,” quietly alters the host computer’s Internet settings to hijack search results and to block victims from visiting security sites that might help scrub the infections. DNSChanger frequently was bundled with other types of malware, meaning that systems infected with the Trojan often also host other, more nefarious digital parasites.

‘Citadel’ Trojan Touts Trouble-Ticket System

January 23, 2012
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Underground hacker forums are full of complaints from users angry that a developer of some popular banking Trojan or bot program has stopped supporting his product, stranding buyers with buggy botnets. Now, the proprietors of a new ZeuS Trojan variant are marketing their malware as the first offering that lets customers file bug reports, suggest and vote on new features in upcoming versions, and track trouble tickets that can be worked on by the developers and fellow users alike.