The WannaCry ransomware might have a link to North Korea

An earlier version of WannaCry shared code with a hacking tool used by the Lazarus Group, according to security researchers

As security researchers investigate last Friday’s massive attack from the WannaCry ransomware, they’ve noticed clues that may link it with a North Korean hacking group that has been blamed for attacking banks across the world.

The evidence is far from a smoking gun, and may prove inconclusive. But security researchers have noticed a similarity between an earlier version of WannaCry and a hacking tool used by the Lazarus Group.

Both the 2014 Sony Hack and a string of recent banking heists have been tied to the group, which security researchers suspect works for North Korea.

Apparently, a variant of WannaCry found in February shared some computer code with a hacking tool the Lazarus group used in 2015.

Google researcher Neel Mehta noticed the similarity on Monday, which was confirmed by other experts including those at security firm Kaspersky Lab.

“For now, more research is required into older versions of Wannacry,” Kaspersky Lab said in a blog post. “We believe this might hold the key to solve some of the mysteries around this attack.”

On Monday, security firm Symantec also reported finding clues that may link WannaCry with the shadowy group. It’s found earlier versions of the ransomware on machines that have been compromised by hacking tools used by Lazarus, according to Vikram Thakur, technical director at the company.

“Shortly after these tools were found on these machines, we could see WannaCry files showing up,” he said.

However, all of these WannaCry samples are earlier variants and different from the one that struck on Friday and infected Windows systems across the world.

Symantec is investigating whether the newer WannaCry samples also share any code overlap with the Lazarus Group’s hacking tools, Thakur said.

But even if they do, it’s still possible a separate hacker may have stolen snippets of code from past malware associated with the shadowy group.

Once hacking tools are used, they often leak on the internet, meaning anyone can use them, according to security experts. Thakur said Symantec is investigating how prevalent this shared code is.

If it’s in wide-use, then the likelihood Lazarus was involved with WannaCry will shrink, he said.

The machines Symantec found infected with both the Lazarus tools and WannaCry may have also been infected with other forms of malware, Thakur said. If so, that would suggest different hackers had targeted the same system, making the evidence more circumstantial.

“I think it’s a little early in our analysis to conclude anything,” he said.

Nevertheless, governments across the world are investigating who was behind Friday’s ransomware attack.

“Attribution can be difficult here,” said U.S. homeland security advisor Tom Bossert in a Monday press briefing. “I don’t want to say we have no clues… the best and brightest are working on that.”

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Michael Kan

IDG News Service
Show Comments

Father’s Day Gift Guide

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?