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Black Arrow Admin 24/04/2022 Black Arrow Admin 24/04/2022

Black Arrow Cyber Threat Briefing 22 April 2022

Black Arrow Cyber Threat Briefing 22 April 2022:

-Why Ransomware Attacks Prefer Small Business Targets Rather Than Rich Enterprises

-Ransomware Plagues Finance Sector as Cyber Attacks Get More Complex

-76% of Organisations Worldwide Expect to Suffer a Cyber Attack This Year

-Most Email Security Approaches Fail to Block Common Threats

-Financial Leaders Grappling with More Aggressive and Sophisticated Attack Methods

-Hackers Sneak Malware into Resumes Sent to Corporate Hiring Managers

-West Warns of Russian Cyber-Attacks As Concerns Rise Over Putin’s Nuclear Rhetoric

-Criminals Adopting New Methods To Bypass Improved Defences, Says Zscaler

-Cyber Criminals Are ‘Drinking the Tears’ Of Ukrainians

-Hackers For Hire Attempt to Destroy Hedge Fund Manager's Reputation

-New Threat Groups and Malware Families Emerging

-Economic Warfare: Attacks on Critical Infrastructure Part of Geopolitical Conflict

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

Why Ransomware Attacks Prefer Small Business Targets Rather Than Rich Enterprises

Enterprise businesses with 25,000 employees+ are less likely to get hit by a ransomware attack than smaller businesses — even though big companies typically can afford to pay higher ransoms, the 2022 CyberEdge Cyberthreat Defense Report concluded.

What explains hackers taking aim at small businesses more frequently than enterprise giants? The answer: Damaging a critical infrastructure facility or similar disruptions are certain to catch the eye of federal law enforcement, or national governments — something that no hacker wants, CyberEdge said. Smaller to medium-sized firms, as it turns out, get hit more frequently by ransomware attacks, on average at roughly 70 percent, the report said.

Overall, some 71 percent of organisations have been bitten by ransomware in 2022, up a point and a half from last year and by 8.5 points in 2020. It’s companies of 10,000 to 24,999 employees that are the sweet spot for ransomware hackers, nearly 75 percent of which are victimised by cyber extortionists.

The extensive study, which surveyed 1,200 security decision makers and practitioners employed by companies of greater than 500 people in 17 countries across 19 industries, is geared to helping gauge their internal practices and investments against those of their counterparts in other parts of the world.

https://www.msspalert.com/cybersecurity-research/why-ransomware-attacks-prefer-small-business-targets-rather-than-rich-enterprises/

Ransomware Plagues Finance Sector as Cyber Attacks Get More Complex

Cyber criminals have evolved from hacking wire transfers to targeting market data, as ransomware continues to hit financial firms, says a new VMware report. Here's what to do about it.

Ransomware plagues financial institutions as they face increasingly complex threats over previous years owing to the changing behaviour of cyber criminal cartels, according to VMware's latest Modern Bank Heists report.

This has happened as the cyber crime cartels have evolved beyond wire transfer frauds to target market strategies, take over brokerage accounts, and island-hop into banks, according to the report.

For the report, VMware surveyed 130 financial sector CISOs and security leaders from across different regions including North America, Europe, Asia Pacific, Central and South America, and Africa.

Report findings were consistent with observations by other security experts. "The Secret Service, in its investigative capacity to protect the nation's financial payment systems and financial infrastructure, has seen an evolution and increase in complex cyber-enabled fraud," says Jeremy Sheridan, former assistant director at the US Secret Service. "The persistent, inadequate security of systems connected to the internet provides opportunity and methodology."

https://www.csoonline.com/article/3657875/ransomware-plagues-finance-sector-as-cyberattacks-get-more-complex.html

76% of Organisations Worldwide Expect to Suffer a Cyber Attack This Year

Ransomware, phishing/social engineering, denial of service (DoS) attacks, and the business fallout of a data breach rank as the top concerns of global organisations, a new study shows.

The newly published Cyber Risk Index, a study by Trend Micro and the Ponemon Institute, shows that more than three-quarters of global organisations expect to suffer a cyber attack in the next 12 months — 25% of which say an attack is "very likely."

More than 80% of the 3,400 CISO and IT professionals and managers surveyed say their organisations were hit with one or more successful cyber attacks in the past 12 months, and 35% suffered seven or more attacks, according to the report, which covers the second half of 2021.

https://www.darkreading.com/attacks-breaches/76-of-organizations-worldwide-expect-to-suffer-a-cyberattack-this-year

Most Email Security Approaches Fail to Block Common Threats

A full 89 percent of organisations experienced one or more successful email breaches during the previous 12 months, translating into big-time costs.

On overwhelming number of security teams believe their email security systems to be ineffective against the most serious inbound threats, including ransomware.

That’s according to a survey of business customers using Microsoft 365 for email commissioned by Cyren and conducted by Osterman Research, which examined concerns with phishing, business email compromise (BEC), and ransomware threats, attacks that became costly incidents, and preparedness to deal with attacks and incidents.

“Security team managers are most concerned that current email security solutions do not block serious inbound threats (particularly ransomware), which requires time for response and remediation by the security team before dangerous threats are triggered by users,” according to the report, released Wednesday.

Less than half of those surveyed said that their organisations can block delivery of email threats. And, correspondingly, less than half of organisations rank their currently deployed email security solutions as effective.

https://threatpost.com/email-security-fail-block-threats/179370/

Financial Leaders Grappling with More Aggressive and Sophisticated Attack Methods

VMware released a report which takes the pulse of the financial industry’s top CISOs and security leaders on the changing behaviour of cyber criminal cartels and the defensive shift of the financial sector.

The report found that financial institutions are facing increased destructive attacks and falling victim to ransomware more than in years past, as sophisticated cyber crime cartels evolve beyond wire transfer fraud to now target market strategies, take over brokerage accounts and island hop into banks.

In the Modern Bank Heists report, 63% of financial institutions admitted experiencing an increase in destructive attacks, with cyber criminals leveraging this method as a means to burn evidence as part of a counter incident response.

Additionally, 74% experienced at least one ransomware attack over the past year, with 63% paying the ransom. When asked about the nation-state actors behind these attacks, the majority of financial instructions stated that Russia posed the greatest concern, as geopolitical tension continues to escalate in cyberspace.

https://www.helpnetsecurity.com/2022/04/21/cybercriminal-cartels-financial-sector/

Hackers Sneak Malware into Resumes Sent to Corporate Hiring Managers

A new set of phishing attacks delivering the ‘more_eggs’ malware has been observed striking corporate hiring managers with bogus resumes as an infection vector, a year after potential candidates looking for work on LinkedIn were lured with weaponised job offers.

"This year the more_eggs operation has flipped the social engineering script, targeting hiring managers with fake resumes instead of targeting jobseekers with fake job offers," eSentire's research and reporting lead, Keegan Keplinger, said in a statement.

The Canadian cyber security company said it identified and disrupted four separate security incidents, three of which occurred at the end of March. Targeted entities include a US-based aerospace company, an accounting business located in the UK, a law firm, and a staffing agency, both based out of Canada.

The malware, suspected to be the handiwork of a threat actor called Golden Chickens (aka Venom Spider), is a stealthy, modular backdoor suite capable of stealing valuable information and conducting lateral movement across the compromised network.

"More_eggs achieves execution by passing malicious code to legitimate windows processes and letting those windows processes do the work for them," Keplinger said. The goal is to leverage the resumes as a decoy to launch the malware and sidestep detection.

https://thehackernews.com/2022/04/hackers-sneak-moreeggs-malware-into.html

West Warns of Russian Cyber Attacks as Concerns Rise Over Putin’s Nuclear Rhetoric

Cyber crime groups have publicly pledged support for Russia, western officials worry about Putin’s reliance on nuclear threats and the battle for Mariupol in Ukraine grinds on.

The US and four of its closest allies have warned that “evolving intelligence” shows that Russia is contemplating cyber attacks on countries backing Ukraine, as the Kremlin’s frustration grows at its failure to make military gains.

Vladimir Putin used the launch on Wednesday of a powerful new Sarmat intercontinental ballistic missile (ICBM), capable of carrying ten or more warheads, to make nuclear threats against western countries.

The Sarmat has long been in development and test flights were initially due to start in 2017. The Pentagon confirmed that the US had been given notice of the test and was not alarmed. Western officials are more concerned by the increasing emphasis Moscow puts on its nuclear arsenal as its conventional forces have faltered in Ukraine.

The Ukrainian army continued to put up resistance in the besieged and devastated city of Mariupol, but Putin’s Chechen ally, Ramzan Kadyrov, predicted that the last stand of the port’s defenders at the Azovstal steel works would fall on Thursday.

The Kremlin has made repeated threats against the many countries that have been supplying Ukraine’s army with modern weapons, and members of the “Five Eyes” intelligence sharing network – the US, Britain, Canada, Australia and New Zealand – predicted Moscow could also work with cyber crime groups to launch attacks on governments, institutions and businesses.

https://www.theguardian.com/world/2022/apr/21/west-warns-of-russian-cyber-attacks-as-concerns-rise-over-putins-nuclear-rhetoric

Criminals Adopting New Methods To Bypass Improved Defences, Says Zscaler

The number of phishing attacks worldwide jumped 29 percent last year as threat actors countered stronger enterprise defences with newer methods, according to researchers with Zscaler's ThreatLabz research team.

Cyber criminals have adapted to multi-factor authentication (MFA), employee security awareness training, and security controls by broadening who and where they will attack.

While the United States remained the country with the most phishing attempts, others are seeing faster growth in the number of incidents – exploiting new vectors like SMS and lowering the barrier of entry for launching attacks through pre-built tools made available on the market.

"Phishing attacks continue to remain one of the most prevalent attack vectors, often serving as a starting point for more advanced next stage attacks that may result in a large-scale breach," Deepen Desai, CISO and vice president of security research and operations at Zscaler, told The Register.

https://www.theregister.com/2022/04/20/phishing-attempts-on-rise-zscaler/

Cyber Criminals Are ‘Drinking the Tears’ of Ukrainians

In biology, when an insect drinks the tears of a large creature, it is called lachryphagy. And in cyberspace, malicious actors are likewise “drinking tears” by exploiting humanitarian concerns about the war in Ukraine for profit. Different forms of deception include tricking people into donating to bogus charities, clicking on Ukraine-themed malicious links and attachments, and even impersonating officials to extort payment for rescuing loved ones.

It is an unfortunate reality that cyber opportunists are engaging in lachryphagy to exploit humanitarian concerns about the war for profit or data collection. To date, one of the largest cryptocurrency scams involving fraudulent Ukrainian relief payments totalled $50 million in March, the Wall Street Journal reports.

Immediately following Russia’s invasion of Ukraine, cybersecurity companies warned the public that criminals were preying on Ukrainian relief fundraising efforts with cryptocurrency scams. Bitdefender Labs reports that cyber criminals have impersonated Ukrainian government entities and charitable organisations such as UNICEF, and the Australian humanitarian agency, Act for Peace. “Some [scammers] are even pretending to be Wladimir Klitschko, whose brother Vitali is mayor of Ukraine’s capital, Kyiv,” according to the BBC.

https://thehill.com/opinion/cybersecurity/3273636-cyber-criminals-are-drinking-the-tears-of-ukrainians/?rl=1

Hackers For Hire Attempt to Destroy Hedge Fund Manager's Reputation

Hackers bombarded a British hedge fund manager with 3,000 emails and fake news stories about his mortgage in an effort to destroy his reputation after being hired by a corporate rival.

Criminals even sought to gain personal information about Matthew Earl by pretending to be his sister in a three-year campaign when he raised concerns over the controversial German payments company Wirecard.

Mr Earl, a former City analyst who runs the hedge fund ShadowFall, said he was targeted by a group called Dark Basin.

This group has been linked to Aviram Azari, who this week pleaded guilty in New York to a conspiracy to target journalists and critics of Wirecard using phishing emails.

Mr Earl said the hacking attempts started in 2016 after ShadowFall, nicknamed the “dark destroyer” in the City, criticised the financial performance of Wirecard. The German company was later mired in a series of accounting scandals and went bust.

He said: “I was being sent very targeted emails, which were crafted with personal information about my interests, friends and family’s details. They were very specific.”

Mr Earl received news stories that appeared to be from media outlets such as Reuters and Bloomberg. Another email appeared to be sent by his sister, sharing family photographs, he added.

https://www.telegraph.co.uk/business/2022/04/21/reign-terror-hackers-hire-ramp-corporate-espionage/

New Threat Groups and Malware Families Emerging

Mandiant announced the findings of an annual report that provides timely data and insights based on frontline investigations and remediations of high-impact cyber attacks worldwide. The 2022 report––which tracks investigation metrics between October 1, 2020 and December 31, 2021—reveals over 1,100 new threat groups and 733 new malware families.

The report also notes a realignment and retooling of China cyber espionage operations to align with the implementation of China’s 14th Five-Year Plan in 2021. The report warns that the national-level priorities included in the plan “signal an upcoming increase in China-nexus actors conducting intrusion attempts against intellectual property or other strategically important economic concerns, as well as defence industry products and other dual-use technologies over the next few years.”

https://www.helpnetsecurity.com/2022/04/22/adversaries-innovating-and-adapting/

Economic Warfare: Attacks on Critical Infrastructure Part of Geopolitical Conflict

We’ve known for years that since at least March of 2016, Russian government threat actors have been targeting multiple U.S. critical infrastructure sectors including the energy, nuclear, commercial facilities, water, aviation, and critical manufacturing sectors. The Department of Homeland Security (DHS), the Federal Bureau of Investigations (FBI), and other agencies have acknowledged this for quite some time in many of their technical alerts and statements.

In the intervening years, with the acceleration of digital transformation, cyber criminals and nation-state actors have increasingly set their sights on these sectors. The convergence of physical and digital assets brings competitive advantage but also inevitable risks. Attacks against hospitals, oil pipelines, food supply chains, and other critical infrastructure, have brought into sharp focus the vulnerability of cyber-physical systems (CPS) and the impact on lives and livelihoods when they are disrupted. Now, overwhelming signs indicate critical infrastructure companies are in the bullseye of geopolitical conflict.

https://www.securityweek.com/economic-warfare-attacks-critical-infrastructure-part-geopolitical-conflict

Threats

Ransomware

Phishing & Email Based Attacks

Malware

Mobile

Millions of Android Users at Risk Of Attack After Widespread Security Issue Uncovered | TechRadar

BYOD

60% of Companies using BYOD Face Serious Security Risks - Help Net Security

IoT

Organised Crime & Criminal Actors

Cryptocurrency/Cryptomining/Cryptojacking

Fraud, Scams & Financial Crime

Insurance

Cyber Insurance and the Changing Global Risk Environment - Security Affairs

Dark Web

Experts Spotted Industrial Spy, A New Stolen Data Marketplace - Security Affairs

Supply Chain and Third Parties

Cloud

Passwords & Credential Stuffing

What Is Peppering in Password Security and How Does It Work? (makeuseof.com)

Digital Transformation

The Price of An Accelerated Digital Transformation - Help Net Security

Spyware, Espionage & Cyber Warfare, including Russian Invasion of Ukraine

Nation State Actors

Nation State Actors – Russia

Nation State Actors – China

Chinese Hackers Behind Most Zero-Day Exploits During 2021 (bleepingcomputer.com)

Nation State Actors – North Korea

Nation State Actors – Misc

State Actors Drive Record Number of Zero-Day Exploits in 2021 - Infosecurity Magazine

Vulnerability Management

Vulnerabilities

Sector Specific

Financial Services Sector

FinTech

Ransomware in Fintech: Cyber Criminals Adopt New Means as Theft Gives Way To Sabotage - Help Net Security

Health/Medical/Pharma Sector

Transport and Aviation

Cyber-Attackers Hit Sunwing Airlines - Infosecurity Magazine (infosecurity-magazine.com)

Reports Published in the Last Week

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 ‘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 Admin 05/04/2022 Black Arrow Admin 05/04/2022

Black Arrow Cyber Advisory – Spring4Shell Remote Code Execution Vulnerability - updated 05/04/2022 under active exploitation

Black Arrow Cyber Advisory – Spring4Shell Remote Code Execution Vulnerability – update 05/04/2022 under active exploitation

Update 05/04/2022: CISA have now confirmed that there is Active Exploitation of Critical Spring4Shell Vulnerability. It is recommended that patches are applied as soon as possible.

Executive Summary

Spring Core is a popular framework used for creating Java-based enterprise applications. Spring4Shell is a critical zero-day bug within this framework, that allows attackers to remotely execute code on affecting systems running certain, non-default configurations. Due to the popularity, Spring Core may be found within many java-based enterprise applications, and Java, is an almost ubiquitous software that’s found in billions of devices across the globe, from the enterprise to the home. The bug has been deemed “Critical”, primarily due to the remote root or administrator capabilities of an attacker if exploited.

This bug is currently receiving a large quantity of media attention. While we do not believe that this issue is of major concern at this time, it is something that is important to be aware of. We will continue to monitor and upgrade our advisory if we deem appropriate.

Update 05/04/2022: CISA have now confirmed that there is Active Exploitation of Critical Spring4Shell Vulnerability. It is recommended that patches are applied as soon as possible.

Executive Summary

What’s the risk to me or my business?

While the use of the Spring Core framework is very popular, this exploit appears to be only exploitable in certain configurations. The bug is not noted to be widely exploited at this time, however attackers will leverage anything they can when compromising a network, and it may only be a matter of time now the bug has been made public. The risk will primarily come from a failure to patch the flaw, which may be easy to overlook.

What can I do?

A patch has been released for the Spring Framework. The bug affects versions 5.3.0 to 5.3.17, 5.2.0-5.2.19 and all other older versions. This bug will be present in any java application made using the Spring Framework.

Discuss with you Managed Service Provider (MSP) whether any of your devices or services are impacted, and when they can expect to be patched. Equally, keeping devices at home or elsewhere up to date is an important step to mitigation, both for your professional and private life.

It is advised that network administrators patch as soon as possible.

We are continuing to monitor this and will provide updates when more information is available.

Technical Summary

The bug, tracked as CVE-2022-22965, was first reported to VMware late Tuesday evening, 29/03/2022. Investigation and analysis into the issue was being conducted with the aim for an emergency release on Thursday, 31/03/2022 however details were leaked in full online prior to this. The vendor has detailed that if the application was deployed using the default configuration, then it should not be exploitable, however due to the nature of the vulnerability there may be more unknown ways to exploit it. Further technical details will be supplied when more details are released.

Need help understanding your gaps, or just want some advice? Get in touch with us.

Black Arrow Admin 01/04/2022 Black Arrow Admin 01/04/2022

Black Arrow Cyber Advisory – Spring4Shell Remote Code Execution Vulnerability

Black Arrow Cyber Advisory – Spring 4 Shell Remote Code Execution Vulnerability

Executive Summary

What’s the risk to me or my business?

What can I do?

It is advised that network administrators patch as soon as possible.

We are continuing to monitor this and will provide updates when more information is available.

Technical Summary

Need help understanding your gaps, or just want some advice? Get in touch with us.

Black Arrow Admin 26/12/2021 Black Arrow Admin 26/12/2021

Black Arrow Cyber Threat Briefing 24 December 2021

-Cyber Criminals Shifting Focus: IT Sector Most Targeted In 2021

-Log4j Flaw: Attackers Are 'Actively Scanning Networks' Warns New Guidance, Joint Advisory from Cyber Agencies in US, Australia, Canada, New Zealand and the United Kingdom

-New Ransomware Variants Flourish Amid Law Enforcement Actions

-93% of Tested Networks Vulnerable to Breach, Pen Testers Find

-Dridex Malware Trolls Employees With Fake Job Termination Emails

-More Than 35,000 Java Packages Impacted By Log4j Flaw, Google Warns

-Conti Ransomware Gang Has Full Log4Shell Attack Chain

-Second Ransomware Family Exploiting Log4j Spotted In US, Europe

-Threat actors steal $80 million per month with fake giveaways, surveys

-Microsoft Teams might have a few serious security issues

-The Future of Work Has Changed, and Your Security Mindset Needs to Follow

Top Cyber Stories of the Last Week

Cyber Criminals Shifting Focus: IT Sector Most Targeted In 2021

Darktrace reported that the IT and communications sector was globally the most targeted industry by cybercriminals in 2021.

Darktrace’s data is developed by ‘early indicator analysis’ that looks at the breadcrumbs of potential cyber-attacks at several stages before they are attributed to any particular actor and before they escalate into a full-blown crisis. Findings show that its artificial intelligence autonomously interrupted an average of 150,000 threats per week against the sector in 2021.

The IT and communications sector includes telecommunications providers, software developers, and managed security service providers, amongst others. There was also a growing trend of hackers targeting backup servers in an attempt to deliberately disable or corrupt backup files by deleting a single index file that would render all backups inaccessible. Attackers could then launch ransomware attacks against the clients of the backup vendor, preventing recovery and forcing payment.

In 2020, the most attacked industry was the financial and insurance sector, showing that cyber-criminals have shifted their focus over the last 12 months.

Over the last 12 months, it is clear that attackers are relentlessly trying to access the networks of trusted suppliers in the IT and communications sector. Quite simply, it is a better return on investment than, for example, going after one company in the financial services sector. SolarWinds and Kaseya are just two well-known and recent examples of this. Sadly, there is likely to be more in the near term.

The findings of this research mark one year since the compromise of US software company SolarWinds rattled the security industry. This landmark supply-chain attack made thousands of organisations vulnerable to infiltration by inserting malicious code into the Orion system. Over the last 12 months, there has been a continued spate of attacks against the IT and communications sector, including the high-profile attacks on Kaseya and Gitlab.

https://www.helpnetsecurity.com/2021/12/22/cybercriminals-it-sector/

New Ransomware Variants Flourish Amid Law Enforcement Actions

Ransomware groups continue to evolve their tactics and techniques to deploy file-encrypting malware on compromised systems, notwithstanding law enforcement's disruptive actions against the cyber crime gangs to prevent them from victimizing additional companies.

"Be it due to law enforcement, infighting amongst groups or people abandoning variants altogether, the RaaS [ransomware-as-a-service] groups dominating the ecosystem at this point in time are completely different than just a few months ago," Intel 471 researchers said in a report published this month. "Yet, even with the shift in the variants, ransomware incidents as a whole are still on the rise."

Sweeping law enforcement operations undertaken by government agencies in recent months have brought about rapid shifts in the RaaS landscape and turned the tables on ransomware syndicates like Avaddon, BlackMatter, Cl0p, DarkSide, Egregor, and REvil, forcing the actors to slow down or shut down their businesses altogether.

https://thehackernews.com/2021/12/new-ransomware-variants-flourish-amid.html

93% of Tested Networks Vulnerable to Breach, Pen Testers Find

Data from dozens of penetration tests and security assessments suggest nearly every organisation can be infiltrated by cyber attackers.

The vast majority of businesses can be compromised within a month by a motivated attacker using common techniques, such as compromising credential, exploiting known vulnerabilities in software and Web applications, or taking advantage of configuration flaws, according to an analysis of security assessments by Positive Technologies.

In 93% of cases, an external attacker could breach a target company's network and gain access to local devices and systems, the company's security service professionals found. In 71% of cases, the attacker could affect the businesses in a way deemed "unacceptable." For example, every bank tested by the security firm could be attacked in a way that disrupted business processes and reduced the quality of their service.

https://www.darkreading.com/attacks-breaches/93-of-tested-networks-vulnerable-to-breach-pentesters-find

Dridex Malware Trolls Employees With Fake Job Termination Emails

A new Dridex malware phishing campaign is using fake employee termination emails as a lure to open a malicious Excel document, which then trolls the victim with a season's greeting message.

Dridex is a banking malware spread through malicious emails that was initially developed to steal online banking credentials. Over time, the developers evolved the malware to use different modules that provide additional malicious behaviour, such as installing other malware payloads, providing remote access to threat actors, or spreading to other devices on the network.

This malware was created by a hacking group known as Evil Corp, which is behind various ransomware operations, such as BitPaymer, DoppelPaymer, WastedLocker variants, and Grief. Due to this, Dridex infections are known to lead to ransomware attacks on compromised networks.

https://www.bleepingcomputer.com/news/security/dridex-malware-trolls-employees-with-fake-job-termination-emails/

More Than 35,000 Java Packages Impacted By Log4j Flaw, Google Warns

The Google Open Source Team scanned the Maven Central Java package repository and found that 35,863 packages (8% of the total) were using versions of the Apache Log4j library vulnerable to Log4Shell exploit and to the CVE-2021-45046 RCE.

“More than 35,000 Java packages, amounting to over 8% of the Maven Central repository (the most significant Java package repository), have been impacted by the recently disclosed log4j vulnerabilities (1, 2), with widespread fallout across the software industry.” reads the report published by Google. “As far as ecosystem impact goes, 8% is enormous.”

The Google experts used the Open Source Insights, a project used to determine open source dependencies, to assess all versions of all artifacts in the Maven Central Repository.

The experts pointed out that the direct dependencies account for around 7,000 of the affected packages. Most of the affected artifacts are related to indirect dependencies.

Since the vulnerability was disclosed, 13% of all vulnerable packages have been fixed (4,620).

https://securityaffairs.co/wordpress/125845/security/log4j-java-packages-flaws.html

Log4j Flaw: Attackers Are 'Actively Scanning Networks' Warns New Guidance, Joint Advisory from Cyber Agencies in US, Australia, Canada, New Zealand and the United Kingdom

A new informational Log4J advisory has been issued by cybersecurity leaders from the US, Australia, Canada, New Zealand and the United Kingdom. The guide includes technical details, mitigations and resources to address known vulnerabilities in the Apache Log4j software library.

The project is a joint effort by the US' Cybersecurity and Infrastructure Security Agency (CISA), FBI and NSA, as well as the Australian Cyber Security Centre (ACSC), Canadian Centre for Cyber Security (CCCS), Computer Emergency Response Team New Zealand (CERT NZ), New Zealand National Cyber Secure Centre (NZ NCSC), and the United Kingdom's National Cyber Security Centre (NCSC-UK).

The organisations said they issued the advisory in response to "active, worldwide exploitation by numerous threat actors, including malicious cyber threat actors." Numerous groups from North Korea, Iran, Turkey and China have been seen exploiting the vulnerability alongside a slate of ransomware groups and cybercriminal organisations.

https://www.zdnet.com/article/cisa-cybersecurity-centers-from-australia-nz-uk-and-canada-release-log4j-advisory/

Conti Ransomware Gang Has Full Log4Shell Attack Chain

The Conti gang was the first professional-grade, sophisticated ransomware group to weaponise Log4j2, now with a full attack chain.

The Conti ransomware gang, which last week became the first professional crimeware outfit to adopt and weaponize the Log4Shell vulnerability, has now built up a holistic attack chain.

The sophisticated Russia-based Conti group – which Palo Alto Networks has called “one of the most ruthless” of dozens of ransomware groups currently known to be active – was in the right place at the right time with the right tools when Log4Shell hit the scene 10 days ago, security firm Advanced Intelligence (AdvIntel) said in a report shared with Threatpost on Thursday.

As of Monday the attack chain has taken the following form, AdvIntel’s Yelisey Boguslavskiy told Threatpost: Emotet -> Cobalt Strike -> Human Exploitation -> (no ADMIN$ share) -> Kerberoast -> vCenter ESXi with log4shell scan for vCenter.

https://threatpost.com/conti-ransomware-gang-has-full-log4shell-attack-chain/177173/

Second Ransomware Family Exploiting Log4j Spotted In US, Europe

This was quickly followed by a second ransomware group when researchers found a second family of ransomware has been growing in usage for attack attempts that exploit the critical vulnerability in Apache Log4j, including in the US and Europe.

A number of researchers, including at cybersecurity giant Sophos, have now said they’ve observed the attempted deployment of a ransomware family known as TellYouThePass. Researchers have described TellYouThePass as an older and largely inactive ransomware family — which has been revived following the discovery of the vulnerability in the widely used Log4j logging software.

https://venturebeat.com/2021/12/21/second-ransomware-family-exploiting-log4j-spotted-in-u-s-europe/

Threat actors steal $80 million per month with fake giveaways, surveys

Scammers are estimated to have made $80 million per month by impersonating popular brands asking people to participate in fake surveys or giveaways.

Researchers warn of this new trend in global fraud schemes involving targeted links to make investigation and take-down increasingly challenging.

According to current estimates, these massive campaigns resulted in an estimated $80,000,000 per month, stolen from 10 million people in 91 countries.

The scam themes are the typical and "trustworthy" fake surveys and giveaways from popular brands with the holiday season making targets more susceptible to fraudulent gift offerings.

According to a report by Group-IB, there are currently 60 known scam networks that use targeted links in their campaigns, impersonating 121 brands in false giveaways.

Each network uses an average of 70 different Internet domain names as part of their campaigns, but some find great success with fewer domains, which indicates that quality beats quantity when it comes to scams.

https://www.bleepingcomputer.com/news/security/threat-actors-steal-80-million-per-month-with-fake-giveaways-surveys/

Microsoft Teams might have a few serious security issues

Security researchers have discovered four separate vulnerabilities in Microsoft Teams that could be exploited by an attacker to spoof link previews, leak IP addresses and even access the software giant's internal services.

These discoveries were made by researchers at Positive Security who “stumbled upon” them while looking for a way to bypass the Same-Origin Policy (SOP) in Teams and Electron according to a new blog post. For those unfamiliar, SOP is a security mechanism found in browsers that helps stop websites from attacking one another.

During their investigation into the matter, the researchers found that they could bypass the SOP in Teams by abusing the link preview feature in Microsoft's video conferencing software by allowing the client to generate a link preview for the target page and then using either summary text or optical character recognition (OCR) on the preview image to extract information.

https://www.techradar.com/news/microsoft-teams-might-have-a-few-serious-security-issues

The Future of Work Has Changed, and Your Security Mindset Needs to Follow

VPNs have become a vulnerability that puts organisations at risk of cyber attacks.

When businesses first sent employees to work from home in March 2020 — thinking it'd only be for two weeks — they turned to quick fixes that would enable remote work for large numbers of people as quickly as possible. While these solutions solved the short-term challenge of allowing distributed workforces to connect to a company's network from anywhere, they're now becoming a security vulnerability that is putting organisations at risk of growing cyberattacks.

Now that almost two years have passed and work has fundamentally shifted, with fully or hybrid remote environments here to stay, business and security leaders need solutions that better fit their unique and increasingly complex needs. In fact, a new survey from Menlo Security has found that 75% of organisations are re-evaluating their security strategies for remote employees, exemplifying that accommodating remote work is a top priority for the majority of business leaders.

To successfully manage the risks that distributed workforces entail, leaders must shift their mindset away from the hub-and-spoke approach of providing connectivity to the entire network, instead segmenting access by each individual private application, wherever it is deployed, as threats of cyberattacks loom across all industries. As organisations grapple with the added security challenges that remote and hybrid work environments bring, adopting a zero-trust approach will be critical for end-to-end network and endpoint protection.

https://www.darkreading.com/attacks-breaches/the-future-of-work-has-changed-and-your-security-mindset-needs-to-follow