Entries Tagged "malware"

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Sophisticated Targeted Attack Via Hotel Networks

Kaspersky Labs is reporting (detailed report here, technical details here) on a sophisticated hacker group that is targeting specific individuals around the world. “Darkhotel” is the name the group and its techniques has been given.

This APT precisely drives its campaigns by spear-phishing targets with highly advanced Flash zero-day exploits that effectively evade the latest Windows and Adobe defenses, and yet they also imprecisely spread among large numbers of vague targets with peer-to-peer spreading tactics. Moreover, this crew’s most unusual characteristic is that for several years the Darkhotel APT has maintained a capability to use hotel networks to follow and hit selected targets as they travel around the world. These travelers are often top executives from a variety of industries doing business and outsourcing in the APAC region. Targets have included CEOs, senior vice presidents, sales and marketing directors and top R&D staff. This hotel network intrusion set provides the attackers with precise global scale access to high value targets. From our observations, the highest volume of offensive activity on hotel networks started in August 2010 and continued through 2013, and we are investigating some 2014 hotel network events.

Good article. This seems pretty obviously a nation-state attack. It’s anyone’s guess which country is behind it, though.

Targets in the spear—phishing attacks include high-profile executives—among them a media executive from Asia­as well as government agencies and NGOs and U.S. executives. The primary targets, however, appear to be in North Korea, Japan, and India. “All nuclear nations in Asia,” Raiu notes. “Their targeting is nuclear themed, but they also target the defense industry base in the U.S. and important executives from around the world in all sectors having to do with economic development and investments.” Recently there has been a spike in the attacks against the U.S. defense industry.

We usually infer the attackers from the target list. This one isn’t that helpful. Pakistan? China? South Korea? I’m just guessing.

Posted on November 10, 2014 at 2:34 PMView Comments

Jumping Air Gaps with All-in-One Printers

Last week, Adi Shamir gave a presentation at Black Hat Europe on using all-in-one printers to control computers on the other side of air gaps. There’s no paper yet, but two publications reported on the talk:

Theoretically, if a malicious program is installed on an air-gapped computer by an unsuspecting user via, say, a USB thumb drive, attackers should have a hard time controlling the malicious program or stealing data through it because there is no Internet connection.

But the researchers found that if a multifunction printer is attached to such a computer, attackers could issue commands to a malicious program running on it by flashing visible or infrared light at the scanner lid when open.

[…]

The researchers observed that if a source of light is pointed repeatedly at the white coating on the inside of the scanner’s lid during a scanning operation, the resulting image will have a series of white lines on darker background. Those lines correspond to the pulses of light hitting the lid and their thickness depends on the duration of the pulses, Shamir explained.

Using this observation the researchers developed Morse code that can be used to send pulses of light at different intervals and interpret the resulting lines as binary data­1s and 0s. Malware running on an air-gapped system could be programmed to initiate a scanning operation at a certain time—for example, during the night—and then interpret the commands sent by attackers using the technique from far away.

Shamir estimated that several hundred bits of data can be sent during a single scan. That’s enough to send small commands that can activate various functionality built into the malware.

This technique can be used to send commands into an air-gapped computer network, and to exfiltrate data from that network.

Posted on October 22, 2014 at 2:17 PMView Comments

StealthGenie CEO Indicted

StealthGenie is a Pakistani company that sells a smartphone app that allows a remote party to monitor the phone. The CEO was just indicted in the US:

“Selling spyware is not just reprehensible, it’s a crime,” Leslie Caldwell, assistant attorney general in the DOJ’s Criminal Division, said in a statement. “Apps like StealthGenie are expressly designed for use by stalkers and domestic abusers who want to know every detail of a victim’s personal life—all without the victim’s knowledge.”

This is likely to be a big deal. The company should have sold the spyware only to governments. That would have been okay.

Posted on October 1, 2014 at 10:48 AMView Comments

Disguising Exfiltrated Data

There’s an interesting article on a data exfiltration technique.

What was unique about the attackers was how they disguised traffic between the malware and command-and-control servers using Google Developers and the public Domain Name System (DNS) service of Hurricane Electric, based in Fremont, Calif.

In both cases, the services were used as a kind of switching station to redirect traffic that appeared to be headed toward legitimate domains, such as adobe.com, update.adobe.com, and outlook.com.

[…]

The malware disguised its traffic by including forged HTTP headers of legitimate domains. FireEye identified 21 legitimate domain names used by the attackers.

In addition, the attackers signed the Kaba malware with a legitimate certificate from a group listed as the “Police Mutual Aid Association” and with an expired certificate from an organization called “MOCOMSYS INC.”

In the case of Google Developers, the attackers used the service to host code that decoded the malware traffic to determine the IP address of the real destination and redirect the traffic to that location.

Google Developers, formerly called Google Code, is the search engine’s website for software development tools, APIs, and documentation on working with Google developer products. Developers can also use the site to share code.

With Hurricane Electric, the attacker took advantage of the fact that its domain name servers were configured, so anyone could register for a free account with the company’s hosted DNS service.

The service allowed anyone to register a DNS zone, which is a distinct, contiguous portion of the domain name space in the DNS. The registrant could then create A records for the zone and point them to any IP address.

Honestly, this looks like a government exfiltration technique, although it could be evidence that the criminals are getting even more sophisticated.

Posted on August 21, 2014 at 6:08 AMView Comments

NSA/GCHQ/CSEC Infecting Innocent Computers Worldwide

There’s a new story on the c’t magazin website about a 5-Eyes program to infect computers around the world for use as launching pads for attacks. These are not target computers; these are innocent third parties.

The article actually talks about several government programs. HACIENDA is a GCHQ program to port-scan entire countries, looking for vulnerable computers to attack. According to the GCHQ slide from 2009, they’ve completed port scans of 27 different countries and are prepared to do more.

The point of this is to create ORBs, or Operational Relay Boxes. Basically, these are computers that sit between the attacker and the target, and are designed to obscure the true origins of an attack. Slides from the Canadian CSEC talk about how this process is being automated: “2-3 times/year, 1 day focused effort to acquire as many new ORBs as possible in as many non 5-Eyes countries as possible.” They’ve automated this process into something codenamed LANDMARK, and together with a knowledge engine codenamed OLYMPIA, 24 people were able to identify “a list of 3000+ potential ORBs” in 5-8 hours. The presentation does not go on to say whether all of those computers were actually infected.

Slides from the UK’s GCHQ also talk about ORB detection, as part of a program called MUGSHOT. It, too, is happy with the automatic process: “Initial ten fold increase in Orb identification rate over manual process.” There are also NSA slides that talk about the hacking process, but there’s not much new in them.

The slides never say how many of the “potential ORBs” CSEC discovers or the computers that register positive in GCHQ’s “Orb identification” are actually infected, but they’re all stored in a database for future use. The Canadian slides talk about how some of that information was shared with the NSA.

Increasingly, innocent computers and networks are becoming collateral damage, as countries use the Internet to conduct espionage and attacks against each other. This is an example of that. Not only do these intelligence services want an insecure Internet so they can attack each other, they want an insecure Internet so they can use innocent third parties to help facilitate their attacks.

The story contains formerly TOP SECRET documents from the US, UK, and Canada. Note that Snowden is not mentioned at all in this story. Usually, if the documents the story is based on come from Snowden, the reporters say that. In this case, the reporters have said nothing about where the documents come from. I don’t know if this is an omission—these documents sure look like the sorts of things that come from the Snowden archive—or if there is yet another leaker.

Posted on August 18, 2014 at 5:45 AMView Comments

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Sidebar photo of Bruce Schneier by Joe MacInnis.