China seen targeting banks, military in Forbes Web attack

Flash and Internet Explorer vulnerabilities were used in targeted attack, say security companies

A Chinese hacking group infiltrated the Forbes.com site in November and used it to launch targeted attacks against website visitors from US. banking and defense companies, according to a cybersecurity company.

The attack took place over a period of several days, starting Nov. 28, and took advantage of unpatched vulnerabilities in Adobe Flash and Microsoft Internet Explorer 9, according to ISight Partners. The vulnerability was kept quiet until Tuesday, when Microsoft issued a patch to plug the security hole in its web browser. Adobe had previously published a patch for Flash.

The attack used a Flash vulnerability and was launched from the "Thought of the day" Flash widget that appears when people first visit the financial magazine's site, said Invincea, a second cybersecurity company that independently detected the attack.

ISight said the attack has the fingerprints of a Chinese hacking group known by security researchers as either Codoso or Sunshop Group. It said technical indicators in the malware as well as use of the same undisclosed vulnerabilities as used in other hacks by Chinese groups led to this conclusion.

Among ISight's evidence: some of the malware code was written in simplified Chinese, used in mainland China, and it bore a resemblance to the "Derusbi" malware that is unique to Chinese hackers. The command system for the malware relied on an Internet domain previously used in Chinese hacks and pointed to web pages that had been used in Chinese attacks in the past.

The group has been active since at least 2010 and targets companies in the defense, finance and energy industries, governments, political dissidents and think tanks, said ISight.

The company said previous hacks by the group have included an attack on the website of the Norwegian Nobel Peace Prize committee in 2010, a spear-phishing attack against government users in 2011 and an attack on websites related to the Uyghur minority in China in 2013.

Martyn Williams covers mobile telecoms, Silicon Valley and general technology breaking news for The IDG News Service. Follow Martyn on Twitter at @martyn_williams. Martyn's e-mail address is martyn_williams@idg.com

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