Security Market Segment LS
Tuesday, 22 August 2017 09:14

New cryptocurrency miner malware infects Windows systems Featured

By

Researchers at security firm Trend Micro say they have found a new cryptocurrency miner that operates as fileless malware, attacking Windows systems by using the EternalBlue exploit that powered the WannaCry ransomware in May.

In a blog post that detailed the characteristics of the malware and the way in which it gained access to a system, Trend Micro said it had been affecting the Asia Pacific region in July.

The major countries affected were Japan, Indonesia, Taiwan, Thailand and India; other countries in the region were only marginally affected.

Fileless malware exists only in the memory of an infected system making detection much more difficult.

Trend Micro said the malware uses Windows Management Instrumentation, a core component of Windows that is used for daily management tasks, as its filess persistence mechanism.

wmi1

Distribution of the new malware infections from July to August 2017.

To enter a system, the EternalBlue vulnerability was used. This exploit was developed by the NSA but leaked on the Web by a group known as Shadow Brokers in April. 

Apart from being used in WannaCry, it was also used in a mass ransomware outbreak — known variously as Petya (ransomware that already existed at the time), NotPetya, Nyetya, ExPetr and GoldenEye — that broke out in Europe in June and spread to other regions.

Trend Micro said the new malware was inserted as a backdoor on a Windows system which then installed various WMI scripts. These scripts then connected to the attacker's command and control servers to obtain instructions and download the cryptocurrency miner malware.

wmi2

The infection flow of the new cryptocurrency miner malware.

The company advised systems admins to restrict and disable WMI as needed to prevent this malware from infecting a system.

"Not all machines require the WMI service. If a machine does not need access to WMI, disable it to eliminate the risk," Trend Micro said. "Microsoft provides a quick guide on how to stop WMI service completely. Microsoft also provides a tool that can trace WMI activity. SMBv1 can also be disabled to reduce the risk to users."

It also pointed out that the entry point for this malware was EternalBlue, for which a patch had been available since March 2017. 

"However, there are still a lot of machines exposed to this vulnerability. Ensuring that the operating system, software, and other applications are updated with the latest patches deters threats from using security gaps as their doorways into systems and networks," Trend Micro said.

Graphics: courtesy Trend Micro

Read 6583 times

Please join our community here and become a VIP.

Subscribe to ITWIRE UPDATE Newsletter here
JOIN our iTWireTV our YouTube Community here
BACK TO LATEST NEWS here

ENABLING MICROSOFT TEAMS IN THE CONTACT CENTRE

If you're looking at enabling Microsoft Teams for your contact centre, you should bookmark this webinar.

Marketing budgets are now focused on Webinars combined with Lead Generation.

Our panellists from Whangarei District Council (NZ) and Maurice Blackburn Lawyers (Aus) were closely involved in recent projects to enable Microsoft Teams for their own contact centres.

They have kindly agreed to join Enghouse and Microsoft to talk about some of the things they would recommend as most critical for IT and CX professionals planning a Teams Contact Centre migration.

Date: 11 May 2022
Time: 12pm AEST | 2pm NZST | 10am SGT

We look forward to having you join us. Please click the button below to register.

REGISTER HERE!

SONICWALL 2022 CYBER THREAT REPORT

The past year has seen a meteoric rise in ransomware incidents worldwide.

Over the past 12 months, SonicWall Capture Labs threat researchers have diligently tracked the meteoric rise in cyberattacks, as well as trends and activity across all threat vectors, including:

Ransomware
Cryptojacking
Encrypted threats
IoT malware
Zero-day attacks and more

These exclusive findings are now available via the 2022 SonicWall Cyber Threat Report, which ensures SMBs, government agencies, enterprises and other organizations have the actionable threat intelligence needed to combat the rising tide of cybercrime.

Click the button below to get the report.

GET REPORT!

PROMOTE YOUR WEBINAR ON ITWIRE

It's all about Webinars.

Marketing budgets are now focused on Webinars combined with Lead Generation.

If you wish to promote a Webinar we recommend at least a 3 to 4 week campaign prior to your event.

The iTWire campaign will include extensive adverts on our News Site itwire.com and prominent Newsletter promotion https://itwire.com/itwire-update.html and Promotional News & Editorial. Plus a video interview of the key speaker on iTWire TV https://www.youtube.com/c/iTWireTV/videos which will be used in Promotional Posts on the iTWire Home Page.

Now we are coming out of Lockdown iTWire will be focussed to assisting with your webinars and campaigns and assistance via part payments and extended terms, a Webinar Business Booster Pack and other supportive programs. We can also create your adverts and written content plus coordinate your video interview.

We look forward to discussing your campaign goals with you. Please click the button below.

MORE INFO HERE!

BACK TO HOME PAGE
Sam Varghese

Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

Share News tips for the iTWire Journalists? Your tip will be anonymous

WEBINARS ONLINE & ON-DEMAND

GUEST ARTICLES

VENDOR NEWS

Guest Opinion

Guest Interviews

Guest Reviews

Guest Research

Guest Research & Case Studies

Channel News

Comments