Exploits Targeting Corporate Users Surged Nearly 30% In 2016

At same time, number of attacks targeting software vulnerabilities in systems used by consumers declined over 20%, Kaspersky Lab says in new report.

A new report from Kaspersky Lab this week holds some mixed news for individuals and organizations on a couple of fronts.
The
report
is based on an analysis of the threats detected and blocked worldwide by Kaspersky Lab’s antimalware products in 2016.
It showed that attacks against individual users decreased nearly 21% last year, from around 5.5 million users in 2015 to just over 4.3 million users in 2016.
During the same period though, attacks against systems used by corporate users jumped sharply from around 540,000 in 2015 to 690,000 last year, representing a 28.4% increase in 12 months. For purposes of classification, Kaspersky Lab counted users of all systems protected by the company’s enterprise antimalware suite as corporate users.
Kaspersky Lab’s data revealed a similar dichotomy in exploit activity data. During 2016, several widely used exploit kits including Neutrino and Angler exited the underground scene and in the process significantly impacted the capabilities of many cybercrime groups to spread malware.
At the same time, and somewhat counter-intuitively, there were over 702 million attacks with exploits in 2016, a substantial 25% increase over 2015. What that meant was that though the number of individuals who encountered exploits decreased overall in 2016, the likelihood of their encountering an attack was actually higher.
“In other words, the number of websites infected with exploits and the number of spam messages with malicious attachments keeps growing,” the Kaspersky Lab report noted.
Alexander Liskin, a security expert at Kaspersky Lab says there are a couple of plausible reasons why corporate users ended up getting targeted more than consumers in 2016.
The slowdown in exploit kit activity, the proliferation of bug bounty programs and redoubled efforts by software vendors to address security bugs last year significantly increased the cost to cybercriminals of developing new exploits, Liskin says. So instead of targeting consumers, there appears to have been heightened interest in going after higher value corporate users.
“Apparently, criminals consider these users valuable targets and are willing to invest into attacking them with exploits. This could be the reason for an increased amount of attacked corporate users,” Liskin says.
The trend is worrisome. The underground economy is driven by nearly the same principles as a legit one, he says. “Cybercriminals put efforts only into potentially profitable areas. If the number of corporate users attacked with exploits is growing, it means that it makes sense for bad guys to invest into exploits for such attacks.”

Stuxnet Flaw Still A Mark
Kaspersky Lab’s review of exploit activity in 2016 uncovered other important trends as well.
Exploits targeting Windows and browser vulnerabilities for instance dropped sharply by 21.56% and 33.4% respectively in 2016. But the number of users attacked with exploits targeting security flaws in Microsoft’s Office software surged by nearly 103%.
Similarly, attacks seeking to exploit vulnerabilities in Adobe Flash and Android jumped in 2016, but by relatively much smaller percentage. Adobe Flash exploits increased about 12% while Android exploits increased 23%.
Interestingly enough though, the vulnerability that was most targeted in 2016 was the Stuxnet LNK flaw that was exploited in the cyber attack on Iran’s nuclear enrichment facility in Natanz seven years ago. Though Microsoft first patched the issue back in 2010 and issued a more comprehensive patch for it in 2015, attackers have kept going at the flaw and have made it the most attacked vulnerability for the past several years in a row.
It’s hard to say exactly why that is happening, Liskin says. It is possible that many users are still using legacy systems with unpatched or pirated Windows versions. The fact that the LNK vulnerability gives malware authors a relatively easy way to make self-spreading malware could be another issue, he said.
“There are a lot of networks around the world that are unprotected and infected with LNK equipped malware endpoints,” Liskin said. “These endpoints pose a constant threat to other parts of the network and also generate lots of detections.”
The Stuxnet LNK flaw is not the only vulnerability that is being exploited in this manner. Another example is CVE-2012-0158 in Microsoft Office’s Active X control. That 2012 flaw, like Stuxnet LNK, continues to be widely exploited by ordinary cybercriminals and targeted attack actors because a lot of individuals and organizations are still running vulnerable versions of the software, Liskin said.
The key takeaway from the research is an old one. “Patch the software you have on your PC or corporate endpoints in time,” he says.” Even this single measure would significantly decrease the risk exploits pose to your private or corporate data.”
Related stories:
Exploit Kit-Based Attacks Decline Dramatically
Microsoft Office Zero-Day Patched After Months of Attacks
What To Do When All Malware Is Zero-Day

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Exploits Targeting Corporate Users Surged Nearly 30% In 2016