Welcome to this week’s Black Arrow Cyber Threat Briefing – a weekly digest, collated and curated by our cyber experts to provide senior and middle management with an easy to digest round up of the most notable threats, vulnerabilities, and cyber related news from the last week.

Top Cyber Stories of the Last Week

New Strain Of Ransomware Implements Self-Spreading Capabilities

French experts spotted a new Ryuk ransomware variant that implements self-spreading capabilities to infect other devices on victims’ local networks.

This new version has a new attribute that allows it to self replicate over the local network allowing the malware to propagate itself – machine to machine – within the Windows domain. Once launched, it will spread itself to every Windows machine it can reach.

https://securityaffairs.co/wordpress/115064/reports/ryuk-ransomware-self-spreading-capabilities.html

One In Four People Use Work Passwords For Consumer Websites

The report found that one in four consumers admit to using their work email or passwords to log in to consumer websites and applications such as food delivery apps, online shopping sites and even dating apps. The report found that consumers are neglecting to implement fundamental security safeguards across smart IoT devices at home, which could have serious security ramifications on both the individual and the enterprise amid increased and ongoing remote work spurred by the COVID-19 pandemic.

https://www.helpnetsecurity.com/2021/02/26/use-work-passwords-for-consumer-websites/

Massive Rise In Threats Across Expanding Attack Surfaces

New malware samples nearly doubled: New ransomware samples increased 106% year-over-year. Trojans increased 128%, with threat actors using trojans to exploit lower-severity vulnerabilities. Sophisticated, multi-staged attacks and malware-as-a-service have become the norm. Vulnerabilities hit a new high: 18,341 new vulnerabilities in 2020 have been reported. To stay ahead of attacks, security and risk leaders need sophisticated insights into which vulnerabilities are high-risk and remediation options for all assets, including non-patching options.

https://www.helpnetsecurity.com/2021/02/26/expanding-attack-surfaces/

Half of Organisations Concerned Remote Working Puts Them at Greater Risk of Cyber Attacks

Half of organizations are concerned that the shift to remote work is putting them a greater risk of Cyber Attacks, according to a new study with IDG. A survey of UK CIOs, CTOs and IT decision makers revealed that insecure practices are regularly taking place among remote workers, providing more opportunities for Cyber Criminals to strike.

https://www.infosecurity-magazine.com/news/half-orgs-remote-working-risk/

Microsoft Patches Four Zero-Day Exchange Server Bugs

Microsoft has been forced to release out-of-band patches to fix multiple zero-day vulnerabilities being exploited by Chinese state-backed threat actors. The unusual step was taken to protect customers running on-premises versions of Microsoft Exchange Server.

https://www.infosecurity-magazine.com/news/microsoft-patch-four-zeroday/

A Booming Trade In Bugs Is Undermining Cyber Security

If you discover that a favourite vending-machine dispenses free chocolate when its buttons are pressed just so, what should you do? The virtuous option is to tell the manufacturer, so it can fix it. The temptation is to gorge.

https://www.economist.com/books-and-arts/2021/03/06/a-booming-trade-in-bugs-is-undermining-cyber-security

Is Your Browser Extension A Botnet Backdoor?

A company that rents out access to more than 10 million Web browsers so that clients can hide their true Internet addresses has built its network by paying browser extension makers to quietly include its code in their creations. This story examines the lopsided economics of extension development, and why installing an extension can be such a risky proposition.

https://krebsonsecurity.com/2021/03/is-your-browser-extension-a-botnet-backdoor/

Cyber Attack Shuts Down Online Learning At 15 UK Schools

A threat actor was able to access the trust's central network infrastructure and while an investigation took place, all existing phone, email, and website communication had to be pulled. Students are still learning remotely in England. Schools are set to reopen on March 8, but in the meantime, only a small subset of children are attending school physically, such as the children of key workers.

https://www.zdnet.com/article/cyberattack-shuts-down-online-learning-at-15-uk-schools/

First Fully Weaponized Spectre Exploit Discovered Online

A fully weaponized exploit for the Spectre CPU vulnerability was uploaded on the malware-scanning website VirusTotal last month, marking the first time a working exploit capable of doing actual damage has entered the public domain. The exploit was discovered and targets Spectre, a major vulnerability that was disclosed in January 2018. According to its website, the Spectre bug is a hardware design flaw in the architectures of Intel, AMD, and ARM processors that allows code running inside bad apps to break the isolation between different applications at the CPU level and then steal sensitive data from other apps running on the same system.

https://therecord.media/first-fully-weaponized-spectre-exploit-discovered-online/

Solarwinds Security Fiasco May Have Started With Simple Password Blunders

We still do not know just how bad the SolarWinds security breach is. We do know over a hundred US government agencies and companies were cracked. "The largest and most sophisticated attack the world has ever seen," with more than a thousand hackers behind it. It may have all started when an intern first set an important password to "'solarwinds123." Then, adding insult to injury, the intern shared the password on GitHub.

https://www.zdnet.com/article/solarwinds-security-fiasco-may-have-started-with-simple-password-blunders/

Threats

Ransomware

Phishing

COVID19 Vaccine Phishing Scams Surge 26% in Three Months

Malware

Mobile

This new jailbreak threat could put nearly all iPhones at risk

Vulnerabilities

Data Breaches

Organised Crime

Dark Web

The 20 Most Common Passwords Found On The Dark Web

Supply Chain

Nation-State Actors

Privacy

Reports Published in the Last Week

Report: Quality, not quantity, is the hallmark of the latest waves of phishing attacks

Other News

As usual, contact us to help assess where your risks lie and to ensure you are doing all you can do to keep you and your business secure.

Look out for our weekly ‘Cyber Tip Tuesday’ video blog and on our YouTube channel.

You can also follow us on Facebook, Twitter and LinkedIn.

Links to articles are for interest and awareness and linking to or reposting external content does not endorse any service or product, likewise we are not responsible for the security of external links.

Black Arrow Cyber Threat Briefing 05 March 2021