Menu
Malware alone didn't cause Ukraine power station outage

Malware alone didn't cause Ukraine power station outage

The attackers manually intervened to open breakers that caused power outages

A new study of a cyberattack last month against Ukrainian power companies suggests malware didn't directly cause the outages that affected at least 80,000 customers.

Instead, the malware provided a foothold for key access to networks that allowed the hackers to then open circuit breakers that cut power, according to information published Saturday by the SANS Industrial Control Systems (ICS) team.

Experts have warned for years that industrial control systems used by utilities are vulnerable to cyberattacks. The Dec. 23 attacks in Ukraine are the most prominent example yet of those fears coming to fruition.

SANS ICS said the attacks demonstrated planning and coordination. Tensions between Ukraine and Russia have been high since Russia annexed Crimea in 2014.

While malware was used to gain access to networks, the attackers also used direct intervention to try to mask their actions to the power systems operators, SANS ICS said.

They also conducted denial-of-service attacks on the utilities' phone systems to block complaints from affected customers, the organization said.

The attacks reportedly affected two service providers -- Prykarpattyaoblenergo and Kyivoblenergo, the latter of which said in a service update that 80,000 customers after 30 substations went offline, SANS ICS said.

Several security companies have analyzed malicious programs called Black Energy 3 and a component called KillDisk which were allegedly used in the attacks.

On Thursday, security firm iSight Partners of Dallas said that malware has been used in the past by a group with strong Russian interests nicknamed the Sandworm Team.

SANS ICS cautioned against attributing the outages solely to that malware, echoing iSight's position.

"Simply put, there is still evidence that has yet to be uncovered that may refute the minutia of the specific components of the malware portion of the attack," wrote Michael Assante, director of SANS ICS.

KillDisk aims to make a computer unusable by overwriting the Master Boot Record (MBR), the first sector of a PC’s hard drive that the computer looks to before loading the operating system. It can also overwrite files with junk data, according to Symantec.

Assante wrote that KillDisk wouldn't have been compatible with the type of SCADA (supervisory control and data acquisition) systems used by utilities. But it may have been employed to wipe other files that would have helped to restore systems.

The power companies appear to have restored services by manually closing the circuit breakers within three and six hours, Assante said.

"In many ways, the Ukrainian operators should be commended for their diligence and restoration efforts," he wrote.

 


Follow Us

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.

Featured

Slideshows

The making of an MSSP: a blueprint for growth in NZ

The making of an MSSP: a blueprint for growth in NZ

Partners are actively building out security practices and services to match, yet remain challenged by a lack of guidance in the market. This exclusive Reseller News Roundtable - in association with Sophos - assessed the making of an MSSP, outlining the blueprint for growth and how partners can differentiate in New Zealand.

The making of an MSSP: a blueprint for growth in NZ
Reseller News Platinum Club celebrates leading partners in 2018

Reseller News Platinum Club celebrates leading partners in 2018

The leading players of the New Zealand channel came together to celebrate a year of achievement at the inaugural Reseller News Platinum Club lunch in Auckland. Following the Reseller News Innovation Awards, Platinum Club provides a platform to showcase the top performing partners and start-ups of the past 12 months, with more than ​​50 organisations in the spotlight.​​​

Reseller News Platinum Club celebrates leading partners in 2018
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP has honoured its leading partners in New Zealand during 2018, following 12 months of growth through the local channel. Unveiled during the fourth running of the ceremony in Auckland, the awards recognise and celebrate excellence, growth, consistency and engagement of standout Kiwi partners.

Meet the top performing HP partners in NZ
Show Comments