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Cybersecurity researchers have disclosed details of a new phishing campaign that conceals malicious payloads by abusing link wrapping services from Proofpoint and Intermedia to bypass defenses. "Link wrapping is designed by vendors like Proofpoint to protect users by routing all clicked URLs through a scanning service, allowing them to block known malicious destinations at the moment of click," the Cloudflare Email Security team said . "While this is effective against known threats, attacks can still succeed if the wrapped link hasn't been flagged by the scanner at click time." The activity, observed over the last two months, once again illustrates how threat actors find different ways to leverage legitimate features and trusted tools to their advantage and perform malicious actions, in this case, redirecting victims to Microsoft 365 phishing pages. It's noteworthy that the abuse of link wrapping involves the attackers gaining unauthorized access to em...

A threat actor known as  Prolific Puma  has been maintaining a low profile and operating an underground link shortening service that's offered to other threat actors for at least over the past four years. Prolific Puma creates "domain names with an  RDGA  [registered domain generation algorithm] and use these domains to provide a link shortening service to other malicious actors, helping them evade detection while they distribute phishing, scams, and malware," Infoblox  said  in a new analysis pieced together from Domain Name System ( DNS)  analytics. With malicious actors known to use link shorteners for phishing attacks, the adversary plays an important role in the cybercrime supply chain, registering between 35,000 to 75,000 unique domain names since April 2022. Prolific Puma is also a  DNS threat actor  for leveraging DNS infrastructure for nefarious purposes. A notable aspect of the threat actor's operations is the use of an American...

Threat actors are actively scanning and exploiting a pair of security flaws that are said to affect as many as 92,000 internet-exposed D-Link network-attached storage (NAS) devices. Tracked as  CVE-2024-3272  (CVSS score: 9.8) and  CVE-2024-3273  (CVSS score: 7.3), the vulnerabilities impact  legacy D-Link products  that have reached end-of-life (EoL) status. D-Link, in an  advisory , said it does not plan to ship a patch and instead urges customers to replace them. "The vulnerability lies within the nas_sharing.cgi uri, which is vulnerable due to two main issues: a backdoor facilitated by hard-coded credentials, and a command injection vulnerability via the system parameter," security researcher who goes by the name netsecfish  said  in late March 2024. Successful exploitation of the flaws could lead to arbitrary command execution on the affected D-Link NAS devices, granting threat actors the ability to access sensitive information, alt...

Simply put, threat intelligence is knowledge that helps you identify security threats and make informed decisions. Threat intelligence can help you solve the following problems: How do I keep up to date on the overwhelming amount of information on security threats…including bad actors, methods, vulnerabilities, targets, etc.? How do I get more proactive about future security threats? How do I inform my leaders about the dangers and repercussions of specific security threats? Threat Intelligence: What is it? Threat intelligence has received a lot of attention lately. While there are many different definitions, here are a few that get quoted often: Threat intelligence is evidence-based knowledge, including context, mechanisms, indicators, implications and actionable advice, about an existing or emerging menace or hazard to assets that can be used to inform decisions regarding the subject's response to that menace or hazard. – Gartner   The set of data collected, assessed and app...

Malicious ads served inside Microsoft Bing's artificial intelligence (AI) chatbot are being used to distribute malware when searching for popular tools. The findings come from Malwarebytes, which revealed that unsuspecting users can be tricked into visiting booby-trapped sites and installing malware directly from Bing Chat conversations. Introduced by Microsoft in February 2023, Bing Chat is an  interactive search experience  that's powered by OpenAI's large language model called  GPT-4 . A month later, the tech giant  began   exploring  placing ads in the conversations. But the move has also opened the doors for threat actors who resort to malvertising tactics and propagate malware. "Ads can be inserted into a Bing Chat conversation in various ways," Jérôme Segura, director of threat intelligence at Malwarebytes,  said . "One of those is when a user hovers over a link and an ad is displayed first before the organic result." In an example highli...

Just as animals use their senses to detect danger, cybersecurity depends on sensors to identify signals in the computing environment that may signal danger. The more highly tuned, diverse and coordinated the senses, the more likely one is to detect important signals that indicate danger. This, however, can be a double-edged sword. Too many signals with too little advanced signal processing just leads to a lot of noise. The right, diverse set of signals with highly evolved signal processing leads to survival. It therefore makes sense that broad threat visibility across the IT environment is fundamental for detecting cyberattacks. Cybersecurity company Cynet puts this in perspective in a new eBook,  The Guide for Threat Visibility for Lean IT Security Teams – link to this . The Ongoing Problem of Limited Threat Visibility The complexity of today's IT environments has made it exceedingly difficult to protect. The defensive perimeter has expanded with an expanded remote workforce, ...

A previously undocumented threat activity cluster dubbed Earth Minotaur is leveraging the MOONSHINE exploit kit and an unreported Android-cum-Windows backdoor called DarkNimbus to facilitate long-term surveillance operations targeting Tibetans and Uyghurs. "Earth Minotaur uses MOONSHINE to deliver the DarkNimbus backdoor to Android and Windows devices, targeting WeChat, and possibly making it a cross-platform threat," Trend Micro researchers Joseph C Chen and Daniel Lunghi said in an analysis published today. "MOONSHINE exploits multiple known vulnerabilities in Chromium-based browsers and applications, requiring users to update software regularly to prevent attacks." Countries affected by Earth Minotaur's attacks span Australia, Belgium, Canada, France, Germany, India, Italy, Japan, Nepal, the Netherlands, Norway, Russia, Spain, Switzerland, Taiwan, Turkey, and the U.S. MOONSHINE first came to light in September 2019 as part of cyber attacks targeting t...

Cybersecurity researchers have flagged the tactical similarities between the threat actors behind the RomCom RAT and a cluster that has been observed delivering a loader dubbed TransferLoader . Enterprise security firm Proofpoint is tracking the activity associated with TransferLoader to a group dubbed UNK_GreenSec and the RomCom RAT actors under the moniker TA829 . The latter is also known by the names CIGAR, Nebulous Mantis, Storm-0978, Tropical Scorpius, UAC-0180, UAT-5647, UNC2596, and Void Rabisu. The company said it discovered UNK_GreenSec as part of its investigation into TA829, describing it as using an "unusual amount of similar infrastructure, delivery tactics, landing pages, and email lure themes." TA829 is something of an unusual hacking group in the threat landscape given its ability to conduct both espionage as well as financially motivated attacks. The Russia-aligned hybrid group has also been linked to the zero-day exploitation of security flaws in Mozil...

Cyber threat intelligence is an effective weapon in the ongoing battle to protect digital assets and infrastructure - especially when combined with AI. But AI is only as good as the data feeding it. Access to unique, underground sources is key. Threat Intelligence offers tremendous value to people and companies. At the same time, its ability to address organizations' cybersecurity needs and the benefits it offers vary by company, industry, and other factors. A common challenge with cyber threat intelligence (CTI) is that the data it produces can be vast and overwhelming, creating confusion and inefficiencies among security teams' threat exposure management efforts. Additionally, organizations have different levels of security maturity, which can make access to and understanding of CTI data difficult. Enter generative AI. Many cybersecurity companies – and more specifically, threat intelligence companies – are bringing generative AI to market to simplify threat intelligence a...

Multiple Russia-aligned threat actors have been observed targeting individuals of interest via the privacy-focused messaging app Signal to gain unauthorized access to their accounts. "The most novel and widely used technique underpinning Russian-aligned attempts to compromise Signal accounts is the abuse of the app's legitimate 'linked devices' feature that enables Signal to be used on multiple devices concurrently," the Google Threat Intelligence Group (GTIG) said in a report. In the attacks spotted by the tech giant's threat intelligence teams, the threat actors, including one it's tracking as UNC5792, have resorted to malicious QR codes that, when scanned, will link a victim's account to an actor-controlled Signal instance. As a result, future messages get delivered synchronously to both the victim and the threat actor in real-time, thereby granting threat actors a persistent way to eavesdrop on the victim's conversations. Google said UAC-...

Lately, we can't help noticing an endless cycle where the more enterprises invest in threat prevention; the more hackers adapt and continue to penetrate enterprises. To make things worse, detecting these penetrations still takes too long with an average dwell time that exceeds 100 (!) days. To keep the enterprise protected, IT needs to figure out a way to break this endless cycle without purchasing complex security and data analysis tools and hiring the right (skilled and expensive) security professionals to operate them. Enter MDR An advanced security service, Managed Detection and Response (MDR), provides ongoing threat detection and response, leveraging AI and machine learning to investigate, alert, and contain threats. MDR is becoming popular and gaining traction. In fact, Gartner forecasts that by 2024, 25% of organizations will be using MDR services, up from less than 5% today. And by 2024, 40% of midsize enterprises will use MDR as their only managed security s...