malware

critics-scoff-after-microsoft-warns-ai-feature-can-infect-machines-and-pilfer-data

Critics scoff after Microsoft warns AI feature can infect machines and pilfer data

AI, Biz & IT, copilot, Data breaches, large language models, malware, microsoft, Security, vulnerabilities, Windows / /

Integration of Copilot Actions into Windows is off by default, but for how long?

Credit: Photographer: Chona Kasinger/Bloomberg via Getty Images

Microsoft’s warning on Tuesday that an experimental AI agent integrated into Windows can infect devices and pilfer sensitive user data has set off a familiar response from security-minded critics: Why is Big Tech so intent on pushing new features before their dangerous behaviors can be fully understood and contained?

As reported Tuesday, Microsoft introduced Copilot Actions, a new set of “experimental agentic features” that, when enabled, perform “everyday tasks like organizing files, scheduling meetings, or sending emails,” and provide “an active digital collaborator that can carry out complex tasks for you to enhance efficiency and productivity.”

Hallucinations and prompt injections apply

The fanfare, however, came with a significant caveat. Microsoft recommended users enable Copilot Actions only “if you understand the security implications outlined.”

The admonition is based on known defects inherent in most large language models, including Copilot, as researchers have repeatedly demonstrated.

One common defect of LLMs causes them to provide factually erroneous and illogical answers, sometimes even to the most basic questions. This propensity for hallucinations, as the behavior has come to be called, means users can’t trust the output of Copilot, Gemini, Claude, or any other AI assistant and instead must independently confirm it.

Another common LLM landmine is the prompt injection, a class of bug that allows hackers to plant malicious instructions in websites, resumes, and emails. LLMs are programmed to follow directions so eagerly that they are unable to discern those in valid user prompts from those contained in untrusted, third-party content created by attackers. As a result, the LLMs give the attackers the same deference as users.

Both flaws can be exploited in attacks that exfiltrate sensitive data, run malicious code, and steal cryptocurrency. So far, these vulnerabilities have proved impossible for developers to prevent and, in many cases, can only be fixed using bug-specific workarounds developed once a vulnerability has been discovered.

That, in turn, led to this whopper of a disclosure in Microsoft’s post from Tuesday:

“As these capabilities are introduced, AI models still face functional limitations in terms of how they behave and occasionally may hallucinate and produce unexpected outputs,” Microsoft said. “Additionally, agentic AI applications introduce novel security risks, such as cross-prompt injection (XPIA), where malicious content embedded in UI elements or documents can override agent instructions, leading to unintended actions like data exfiltration or malware installation.”

Microsoft indicated that only experienced users should enable Copilot Actions, which is currently available only in beta versions of Windows. The company, however, didn’t describe what type of training or experience such users should have or what actions they should take to prevent their devices from being compromised. I asked Microsoft to provide these details, and the company declined.

Like “macros on Marvel superhero crack”

Some security experts questioned the value of the warnings in Tuesday’s post, comparing them to warnings Microsoft has provided for decades about the danger of using macros in Office apps. Despite the long-standing advice, macros have remained among the lowest-hanging fruit for hackers out to surreptitiously install malware on Windows machines. One reason for this is that Microsoft has made macros so central to productivity that many users can’t do without them.

“Microsoft saying ‘don’t enable macros, they’re dangerous’… has never worked well,” independent researcher Kevin Beaumont said. “This is macros on Marvel superhero crack.”

Beaumont, who is regularly hired to respond to major Windows network compromises inside enterprises, also questioned whether Microsoft will provide a means for admins to adequately restrict Copilot Actions on end-user machines or to identify machines in a network that have the feature turned on.

A Microsoft spokesperson said IT admins will be able to enable or disable an agent workspace at both account and device levels, using Intune or other MDM (Mobile Device Management) apps.

Critics voiced other concerns, including the difficulty for even experienced users to detect exploitation attacks targeting the AI agents they’re using.

“I don’t see how users are going to prevent anything of the sort they are referring to, beyond not surfing the web I guess,” researcher Guillaume Rossolini said.

Microsoft has stressed that Copilot Actions is an experimental feature that’s turned off by default. That design was likely chosen to limit its access to users with the experience required to understand its risks. Critics, however, noted that previous experimental features—Copilot, for instance—regularly become default capabilities for all users over time. Once that’s done, users who don’t trust the feature are often required to invest time developing unsupported ways to remove the features.

Sound but lofty goals

Most of Tuesday’s post focused on Microsoft’s overall strategy for securing agentic features in Windows. Goals for such features include:

  • Non-repudiation, meaning all actions and behaviors must be “observable and distinguishable from those taken by a user”
  • Agents must preserve confidentiality when they collect, aggregate, or otherwise utilize user data
  • Agents must receive user approval when accessing user data or taking actions

The goals are sound, but ultimately they depend on users reading the dialog windows that warn of the risks and require careful approval before proceeding. That, in turn, diminishes the value of the protection for many users.

“The usual caveat applies to such mechanisms that rely on users clicking through a permission prompt,” Earlence Fernandes, a University of California, San Diego professor specializing in AI security, told Ars. “Sometimes those users don’t fully understand what is going on, or they might just get habituated and click ‘yes’ all the time. At which point, the security boundary is not really a boundary.”

As demonstrated by the rash of “ClickFix” attacks, many users can be tricked into following extremely dangerous instructions. While more experienced users (including a fair number of Ars commenters) blame the victims falling for such scams, these incidents are inevitable for a host of reasons. In some cases, even careful users are fatigued or under emotional distress and slip up as a result. Other users simply lack the knowledge to make informed decisions.

Microsoft’s warning, one critic said, amounts to little more than a CYA (short for cover your ass), a legal maneuver that attempts to shield a party from liability.

“Microsoft (like the rest of the industry) has no idea how to stop prompt injection or hallucinations, which makes it fundamentally unfit for almost anything serious,” critic Reed Mideke said. “The solution? Shift liability to the user. Just like every LLM chatbot has a ‘oh by the way, if you use this for anything important be sure to verify the answers” disclaimer, never mind that you wouldn’t need the chatbot in the first place if you knew the answer.”

As Mideke indicated, most of the criticisms extend to AI offerings other companies—including Apple, Google, and Meta—are integrating into their products. Frequently, these integrations begin as optional features and eventually become default capabilities whether users want them or not.

Photo of Dan Goodin

Dan Goodin is Senior Security Editor at Ars Technica, where he oversees coverage of malware, computer espionage, botnets, hardware hacking, encryption, and passwords. In his spare time, he enjoys gardening, cooking, and following the independent music scene. Dan is based in San Francisco. Follow him at here on Mastodon and here on Bluesky. Contact him on Signal at DanArs.82.

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ClickFix may be the biggest security threat your family has never heard of

Biz & IT, clickfix, malware, Scams, Security / /

Another campaign, documented by Sekoia, targeted Windows users. The attackers behind it first compromise a hotel’s account for Booking.com or another online travel service. Using the information stored in the compromised accounts, the attackers contact people with pending reservations, an ability that builds immediate trust with many targets, who are eager to comply with instructions, lest their stay be canceled.

The site eventually presents a fake CAPTCHA notification that bears an almost identical look and feel to those required by content delivery network Cloudflare. The proof the notification requires for confirmation that there’s a human behind the keyboard is to copy a string of text and paste it into the Windows terminal. With that, the machine is infected with malware tracked as PureRAT.

Push Security, meanwhile, reported a ClickFix campaign with a page “adapting to the device that you’re visiting from.” Depending on the OS, the page will deliver payloads for Windows or macOS. Many of these payloads, Microsoft said, are LOLbins, the name for binaries that use a technique known as living off the land. These scripts rely solely on native capabilities built into the operating system. With no malicious files being written to disk, endpoint protection is further hamstrung.

The commands, which are often base-64 encoded to make them unreadable to humans, are often copied inside the browser sandbox, a part of most browsers that accesses the Internet in an isolated environment designed to protect devices from malware or harmful scripts. Many security tools are unable to observe and flag these actions as potentially malicious.

The attacks can also be effective given the lack of awareness. Many people have learned over the years to be suspicious of links in emails or messengers. In many users’ minds, the precaution doesn’t extend to sites that instruct them to copy a piece of text and paste it into an unfamiliar window. When the instructions come in emails from a known hotel or at the top of Google results, targets can be further caught off guard.

With many families gathering in the coming weeks for various holiday dinners, ClickFix scams are worth mentioning to those family members who ask for security advice. Microsoft Defender and other endpoint protection programs offer some defenses against these attacks, but they can, in some cases, be bypassed. That means that, for now, awareness is the best countermeasure.

ClickFix may be the biggest security threat your family has never heard of Read More »

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Commercial spyware “Landfall” ran rampant on Samsung phones for almost a year

android, malware, samsung, Security, smartphones, spyware, Tech / /

Before the April 2025 patch, Samsung phones had a vulnerability in their image processing library. This is a zero-click attack because the user doesn’t need to launch anything. When the system processes the malicious image for display, it extracts shared object library files from the ZIP to run the Landfall spyware. The payload also modifies the device’s SELinux policy to give Landfall expanded permissions and access to data.

Landfall flowchart

How Landfall exploits Samsung phones.

Credit: Unit 42

How Landfall exploits Samsung phones. Credit: Unit 42

The infected files appear to have been delivered to targets via messaging apps like WhatsApp. Unit 42 notes that Landfall’s code references several specific Samsung phones, including the Galaxy S22, Galaxy S23, Galaxy S24, Galaxy Z Flip 4, and Galaxy Z Fold 4. Once active, Landfall reaches out to a remote server with basic device information. The operators can then extract a wealth of data, like user and hardware IDs, installed apps, contacts, any files stored on the device, and browsing history. It can also activate the camera and microphone to spy on the user.

Removing the spyware is no easy feat, either. Because of its ability to manipulate SELinux policies, it can burrow deeply into the system software. It also includes several tools that help evade detection. Based on the VirusTotal submissions, Unit 42 believes Landfall was active in 2024 and early 2025 in Iraq, Iran, Turkey, and Morocco. The vulnerability may have been present in Samsung’s software from Android 13 through Android 15, the company suggests.

Unit 42 says that several naming schemes and server responses share similarities with industrial spyware developed by big cyber-intelligence firms like NSO Group and Variston. However, they cannot directly tie Landfall to any particular group. While this attack was highly targeted, the details are now in the open, and other threat actors could now employ similar methods to access unpatched devices. Anyone with a supported Samsung phone should make certain they are on the April 2025 patch or later.

Commercial spyware “Landfall” ran rampant on Samsung phones for almost a year Read More »

wipers-from-russia’s-most-cut-throat-hackers-rain-destruction-on-ukraine

Wipers from Russia’s most cut-throat hackers rain destruction on Ukraine

Biz & IT, malware, russia, sandworm, Security, Ukraine, war, wipers / /

One of the world’s most ruthless and advanced hacking groups, the Russian state-controlled Sandworm, launched a series of destructive cyberattacks in the country’s ongoing war against neighboring Ukraine, researchers reported Thursday.

In April, the group targeted a Ukrainian university with two wipers, a form of malware that aims to permanently destroy sensitive data and often the infrastructure storing it. One wiper, tracked under the name Sting, targeted fleets of Windows computers by scheduling a task named DavaniGulyashaSdeshka, a phrase derived from Russian slang that loosely translates to “eat some goulash,” researchers from ESET said. The other wiper is tracked as Zerlot.

A not-so-common target

Then, in June and September, Sandworm unleashed multiple wiper variants against a host of Ukrainian critical infrastructure targets, including organizations active in government, energy, and logistics. The targets have long been in the crosshairs of Russian hackers. There was, however, a fourth, less common target—organizations in Ukraine’s grain industry.

“Although all four have previously been documented as targets of wiper attacks at some point since 2022, the grain sector stands out as a not-so-frequent target,” ESET said. “Considering that grain export remains one of Ukraine’s main sources of revenue, such targeting likely reflects an attempt to weaken the country’s war economy.”

Wipers have been a favorite tool of Russian hackers since at least 2012, with the spreading of the NotPetya worm. The self-replicating malware originally targeted Ukraine, but eventually caused international chaos when it spread globally in a matter of hours. The worm resulted in tens of billions of dollars in financial damages after it shut down thousands of organizations, many for days or weeks.

Wipers from Russia’s most cut-throat hackers rain destruction on Ukraine Read More »

5-ai-developed-malware-families-analyzed-by-google-fail-to-work-and-are-easily-detected

5 AI-developed malware families analyzed by Google fail to work and are easily detected

AI, Biz & IT, generative ai, guardrails, malware, ransomware, Security / /

The assessments provide a strong counterargument to the exaggerated narratives being trumpeted by AI companies, many seeking new rounds of venture funding, that AI-generated malware is widespread and part of a new paradigm that poses a current threat to traditional defenses.

A typical example is Anthropic, which recently reported its discovery of a threat actor that used its Claude LLM to “develop, market, and distribute several variants of ransomware, each with advanced evasion capabilities, encryption, and anti-recovery mechanisms.” The company went on to say: “Without Claude’s assistance, they could not implement or troubleshoot core malware components, like encryption algorithms, anti-analysis techniques, or Windows internals manipulation.”

Startup ConnectWise recently said that generative AI was “lowering the bar of entry for threat actors to get into the game.” The post cited a separate report from OpenAI that found 20 separate threat actors using its ChatGPT AI engine to develop malware for tasks including identifying vulnerabilities, developing exploit code, and debugging that code. BugCrowd, meanwhile, said that in a survey of self-selected individuals, “74 percent of hackers agree that AI has made hacking more accessible, opening the door for newcomers to join the fold.”

In some cases, the authors of such reports note the same limitations noted in this article. Wednesday’s report from Google says that in its analysis of AI tools used to develop code for managing command and control channels and obfuscating its operations “we did not see evidence of successful automation or any breakthrough capabilities.” OpenAI said much the same thing. Still, these disclaimers are rarely made prominently and are often downplayed in the resulting frenzy to portray AI-assisted malware as posing a near-term threat.

Google’s report provides at least one other useful finding. One threat actor that exploited the company’s Gemini AI model was able to bypass its guardrails by posing as white-hat hackers doing research for participation in a capture-the-flag game. These competitive exercises are designed to teach and demonstrate effective cyberattack strategies to both participants and onlookers.

Such guardrails are built into all mainstream LLMs to prevent them from being used maliciously, such as in cyberattacks and self-harm. Google said it has since better fine-tuned the countermeasure to resist such ploys.

Ultimately, the AI-generated malware that has surfaced to date suggests that it’s mostly experimental, and the results aren’t impressive. The events are worth monitoring for developments that show AI tools producing new capabilities that were previously unknown. For now, though, the biggest threats continue to predominantly rely on old-fashioned tactics.

5 AI-developed malware families analyzed by Google fail to work and are easily detected Read More »

this-browser-claims-“perfect-privacies-protection,”-but-it-acts-like-malware

This browser claims “perfect privacies protection,” but it acts like malware

malware, Security, syndicated, Universe Browser, web browsers / /

Researchers note links to Asia’s booming cybercrime and illegal gambling networks.

This looks like a 100 percent above-board product, right? Right? Credit: Ars Technica

The Universe Browser makes some big promises to its potential users. Its online advertisements claim it’s the “fastest browser,” that people using it will “avoid privacy leaks” and that the software will help “keep you away from danger.” However, everything likely isn’t as it seems.

The browser, which is linked to Chinese online gambling websites and is thought to have been downloaded millions of times, actually routes all Internet traffic through servers in China and “covertly installs several programs that run silently in the background,” according to new findings from network security company Infoblox. The researchers say the “hidden” elements include features similar to malware—including “key logging, surreptitious connections,” and changing a device’s network connections.

Perhaps most significantly, the Infoblox researchers who collaborated with the United Nations Office on Drugs and Crime (UNODC) on the work, found links between the browser’s operation and Southeast Asia’s sprawling, multibillion-dollar cybercrime ecosystem, which has connections to money-laundering, illegal online gambling, human trafficking, and scam operations that use forced labor. The browser itself, the researchers says, is directly linked to a network around major online gambling company BBIN, which the researchers have labeled a threat group they call Vault Viper.

The researchers say the discovery of the browser—plus its suspicious and risky behavior—indicates that criminals in the region are becoming increasingly sophisticated. “These criminal groups, particularly Chinese organized crimes syndicates, are increasingly diversifying and evolving into cyber enabled fraud, pig butchering, impersonation, scams, that whole ecosystem,” says John Wojcik, a senior threat researcher at Infoblox, who also worked on the project when he was a staff member at the UNODC.

“They’re going to continue to double down, reinvest profits, develop new capabilities,” Wojcik says. “The threat is ultimately becoming more serious and concerning, and this is one example of where we see that.”

Under the hood

The Universe Browser was first spotted—and mentioned by name—by Infoblox and UNODC at the start of this year when they began unpacking the digital systems around an online casino operation based in Cambodia, which was previously raided by law enforcement officials. Infoblox, which specializes in domain name system (DNS) management and security, detected a unique DNS fingerprint from those systems that they linked to Vault Viper, making it possible for the researchers to trace and map websites and infrastructure linked to the group.

Tens of thousands of web domains, plus various command-and-control infrastructure and registered companies, are linked to Vault Viper activity, Infoblox researchers say in a report shared with WIRED. They also say they examined hundreds of pages of corporate documents, legal records, and court filings with links to BBIN or other subsidiaries. Time and time again, they came across the Universe Browser online.

“We haven’t seen the Universe Browser advertised outside of the domains Vault Viper controls,” says Maël Le Touz, a threat researcher at Infoblox. The Infoblox report says the browser was “specifically” designed to help people in Asia—where online gambling is largely illegal—bypass restrictions. “Each of the casino websites they operate seem to contain a link and advertisement to it,” Le Touz says.

The Universe Browser itself is mostly offered for direct download from these casino websites—often being linked at the bottom of the websites, next to the logo of BBIN. There are desktop versions available for Windows, as well as an app version in Apple’s App Store. And while it is not in Google’s Play Store, there are Android APK files that allow the app to be directly installed on Android phones. The researchers say multiple parts of the Universe Browser and the code for its apps reference BBIN, and other technical details also reference the company.

The researchers reverse-engineered the Windows version of the browser. They say that while they have been unable to “verify malicious intent,” elements of the browser that they uncovered include many features that are similar to those found malware and tries to evade detection by antivirus tools. When the browser is launched, it “immediately” checks for the user’s location, language, and whether it is running in a virtual machine. The app also installs two browser extensions: one of which can allow screenshots to be uploaded to domains linked to the browser.

While online gambling in China is largely illegal, the country also runs some of the world’s strictest online censorship operations and has taken action against illegal gambling rings. While the browser may most often be being used by those trying to take part in illegal gambling, it also puts their data at risk, the researchers say. “In the hands of a malicious actor—a Triad for example—this browser would serve as the perfect tool to identify wealthy players and obtain access to their machine,” the Infoblox report says.

Beyond connecting to China, running key logging, and other programs that run in the background, Infoblox’s report also says multiple functions have been disabled. “The right click, settings access and developer tools, for instance, have all been removed, while the browser itself is run with several flags disabling major security features including sandboxing, and the removal of legacy SSL protocols, greatly increasing risk when compared with typical mainstream browsers,” the company’s report says. (SSL, also known as Secure Sockets Layer, is a historic type of web encryption that protected some data transfers.)

It is unclear whether these same suspicious behaviors are present in the iOS and Android versions of the app. A Google spokesperson says the company is looking into the app and confirmed it was not available through its Google Play store. Apple did not respond to requests for comment about the app.

Connect the dots

The web infrastructure around the Universe Browser led the researchers back to BBIN, a company that has existed since 1999. While it was originally founded in Taiwan, the company now has a large base in the Philippines.

BBIN, which also goes by the name Baoying Group and has multiple subsidies, describes itself as a “leading” supplier of iGaming software in Asia. A UNODC report from April, which links BBIN to the Universe Browser but does not formally name the company as Vault Viper, says the firm runs several hotels and casinos in Southeast Asia as well as providing “one of the largest and most successful” iGaming platforms in the region. Over the last decade, BBIN has sponsored or partnered with multiple major European soccer teams, such as Spain’s Atlético de Madrid, Germany’s Borussia Dortmund, and Dutch team AFC Ajax.

In recent years, multiple football clubs in England’s Premier League have faced scrutiny over sponsorship by Asian gambling companies—including by TGP Europe, which was owned by Alvin Chau, the chairman and founder of SunCity Group, who was sentenced in January 2023 to 18 years in prison after being found guilty of running illegal gambling operations. TGP Europe left the UK earlier this year after being fined by the country’s gambling regulator. Atlético Madrid, Borussia Dortmund, and AFC Ajax did not respond to WIRED requests for comment.

The iGaming industry develops online gambling software, such as virtual poker or other online casino games, that can easily be played on the web or on phones. “BBIN Baoying is officially an online casino game developer or ‘white label’ online casino platform, meaning it outsources its online gambling technology to other sites,” says Lindsey Kennedy, research director at The EyeWitness Project, which investigates corruption and organized crime. “The only languages it offers are Korean, Japanese, and Chinese, which isn’t a great sign as online gambling is either banned or heavily restricted in all three countries.”

“Baoying and BBIN are what I would call a multi-billion dollar gray-area international conglomerate with deep criminal connections, backstopping and providing services to online gambling businesses, scams and cybercrime actors,” alleges Jeremy Douglas, chief of staff at the UNODC and its former regional representative for Southeast Asia. “Aside from what has been estimated at a two-thirds ownership by Alvin Chau of SunCity—arguably the biggest money launderer in the history of Asia—law enforcement partners have documented direct connections with Triad groups including the Bamboo Union, Four Seas, Tian Dao,” Douglas says of BBIN. (When Chau was sentenced in January 2023, court documents pointed to him allegedly owning a 66.67 percent share of Baoying).

BBIN did not respond to multiple requests for comment from WIRED. The firm’s primary contact email address it lists on its website bounced back, while questions sent to another email address and online contact forms, plus attempts to contact two alleged staff members on LinkedIn were not answered by the time of publication. A company Telegram account pointed WIRED to one of the contact forms that did not provide any answers.

The Presidential Anti-Organized Crime Commission (PAOCC) in the Philippines, which tackles organized and international crimes, did not respond to a request for comment from WIRED about BBIN.

Over the last decade, online crime in Southeast Asia has massively surged, driven partially by illegal online gambling and also a series of scam compoundsthat have been set up across Myanmar, Laos, and Cambodia. Hundreds of thousands of people from more than 60 countries have been tricked into working in these compounds, where they operate scams day and night, stealing billions of dollars from people around the world.

“Scam parks and compounds across the region generally host both online gambling and online scam operations, and the methodology used to lure individuals into opening online gambling accounts parallels that associated with pig-butchering scams,” says Jason Tower, a senior expert at the Global Initiative Against Transnational Organized Crime.

Last week, US law enforcement seized $15 billion in Bitcoin from one giant Cambodian organization, which publicly dealt in real estate but allegedly ran scam facilities in “secret.” One of the sanctioned entities, the Jin Bei Group in Cambodia, which US authorities accused of operating a series of scam compounds, also shows links to BBIN’s technology, Tower says. “There are multiple Telegram groups and casino websites indicating that BBIN partners with multiple entities inside the Jinbei casino,” Tower says, adding that one group on Telegram “posts daily advertisements indicating an official partnership between Jinbei and BBIN.”

Over recent years, multiple government press releases and news reports fromcountries including China and Taiwan, have alleged how BBIN’s technology has been used within illegal gambling operations and linked to cybercrime. “There are hundreds of Telegram posts aggressively advertising various illegal Chinese facing gambling sites that say they either are, or are built on, BBIN/Baoying technology, many of them by individuals claiming to operate out of scam and illegal gambling compounds, or as part of the highly illegal, trafficking-driven industry in Cambodia and Northern Myanmar,” says Kennedy from The EyeWitness Project.

While the Universe Browser has most likely been downloaded by those accessing Chinese-language gambling websites, researchers say that its development indicates how pivotal and lucrative illegal online gambling operations are and exposing their links to scamming efforts that operate across the world. “As these operations continue to scale and diversify, they are marked by growing technical expertise, professionalization, operational resilience, and the ability to function under the radar with very limited scrutiny and oversight,” Infoblox’s report concludes.

This story originally appeared on wired.com.

Photo of WIRED

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nation-state-hackers-deliver-malware-from-“bulletproof”-blockchains

Nation-state hackers deliver malware from “bulletproof” blockchains

Biz & IT, Blockchain, hacking, malware, Security / /

Hacking groups—at least one of which works on behalf of the North Korean government—have found a new and inexpensive way to distribute malware from “bulletproof” hosts: stashing them on public cryptocurrency blockchains.

In a Thursday post, members of the Google Threat Intelligence Group said the technique provides the hackers with their own “bulletproof” host, a term that describes cloud platforms that are largely immune from takedowns by law enforcement and pressure from security researchers. More traditionally, these hosts are located in countries without treaties agreeing to enforce criminal laws from the US and other nations. These services often charge hefty sums and cater to criminals spreading malware or peddling child sexual abuse material and wares sold in crime-based flea markets.

Next-gen, DIY hosting that can’t be tampered with

Since February, Google researchers have observed two groups turning to a newer technique to infect targets with credential stealers and other forms of malware. The method, known as EtherHiding, embeds the malware in smart contracts, which are essentially apps that reside on blockchains for Ethereum and other cryptocurrencies. Two or more parties then enter into an agreement spelled out in the contract. When certain conditions are met, the apps enforce the contract terms in a way that, at least theoretically, is immutable and independent of any central authority.

“In essence, EtherHiding represents a shift toward next-generation bulletproof hosting, where the inherent features of blockchain technology are repurposed for malicious ends,” Google researchers Blas Kojusner, Robert Wallace, and Joseph Dobson wrote. “This technique underscores the continuous evolution of cyber threats as attackers adapt and leverage new technologies to their advantage.”

There’s a wide array of advantages to EtherHiding over more traditional means of delivering malware, which besides bulletproof hosting include leveraging compromised servers.

    • The decentralization prevents takedowns of the malicious smart contracts because the mechanisms in the blockchains bar the removal of all such contracts.
    • Similarly, the immutability of the contracts prevents the removal or tampering with the malware by anyone.
    • Transactions on Ethereum and several other blockchains are effectively anonymous, protecting the hackers’ identities.
    • Retrieval of malware from the contracts leaves no trace of the access in event logs, providing stealth
    • The attackers can update malicious payloads at anytime

Nation-state hackers deliver malware from “bulletproof” blockchains Read More »

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GitHub abused to distribute payloads on behalf of malware-as-a-service

Biz & IT, GitHub, malware, Security / /

Researchers from Cisco’s Talos security team have uncovered a malware-as-a-service operator that used public GitHub accounts as a channel for distributing an assortment of malicious software to targets.

The use of GitHub gave the malware-as-a-service (MaaS) a reliable and easy-to-use platform that’s greenlit in many enterprise networks that rely on the code repository for the software they develop. GitHub removed the three accounts that hosted the malicious payloads shortly after being notified by Talos.

“In addition to being an easy means of file hosting, downloading files from a GitHub repository may bypass Web filtering that is not configured to block the GitHub domain,” Talos researchers Chris Neal and Craig Jackson wrote Thursday. “While some organizations can block GitHub in their environment to curb the use of open-source offensive tooling and other malware, many organizations with software development teams require GitHub access in some capacity. In these environments, a malicious GitHub download may be difficult to differentiate from regular web traffic.”

Emmenhtal, meet Amadey

The campaign, which Talos said had been ongoing since February, used a previously known malware loader tracked under names including Emmenhtal and PeakLight. Researchers from security firm Palo Alto Networks and Ukraine’s major state cyber agency SSSCIP had already documented the use of Emmenhtal in a separate campaign that embedded the loader into malicious emails to distribute malware to Ukrainian entities. Talos found the same Emmenhtal variant in the MaaS operation, only this time the loader was distributed through GitHub.

The campaign using GitHub was different from one targeting Ukrainian entities in another key way. Whereas the final payload in the one targeting the Ukrainian entities was a malicious backdoor known as SmokeLoader, the GitHub one installed Amadey, a separate malware platform known. Amadey was first seen in 2018 and was initially used to assemble botnets. Talos said the primary function of Amadey is to collect system information from infected devices and download a set of secondary payloads that are customized to their individual characteristics, based on the specific purpose in different campaigns.

GitHub abused to distribute payloads on behalf of malware-as-a-service Read More »

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Hackers exploit a blind spot by hiding malware inside DNS records

Biz & IT, DNS, domain name system, malware, Security / /

Hackers are stashing malware in a place that’s largely out of the reach of most defenses—inside domain name system (DNS) records that map domain names to their corresponding numerical IP addresses.

The practice allows malicious scripts and early-stage malware to fetch binary files without having to download them from suspicious sites or attach them to emails, where they frequently get quarantined by antivirus software. That’s because traffic for DNS lookups often goes largely unmonitored by many security tools. Whereas web and email traffic is often closely scrutinized, DNS traffic largely represents a blind spot for such defenses.

A strange and enchanting place

Researchers from DomainTools on Tuesday said they recently spotted the trick being used to host a malicious binary for Joke Screenmate, a strain of nuisance malware that interferes with normal and safe functions of a computer. The file was converted from binary format into hexadecimal, an encoding scheme that uses the digits 0 through 9 and the letters A through F to represent binary values in a compact combination of characters.

The hexadecimal representation was then broken up into hundreds of chunks. Each chunk was stashed inside the DNS record of a different subdomain of the domain whitetreecollective[.]com. Specifically, the chunks were placed inside the TXT record, a portion of a DNS record capable of storing any arbitrary text. TXT records are often used to prove ownership of a site when setting up services like Google Workspace.

An attacker who managed to get a toehold into a protected network could then retrieve each chunk using an innocuous-looking series of DNS requests, reassembling them, and then converting them back into binary format. The technique allows the malware to be retrieved through traffic that can be hard to closely monitor. As encrypted forms of IP lookups—known as DOH (DNS over HTTPS) and DOT (DNS over TLS)—gain adoption, the difficulty will likely grow.

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Destructive malware available in NPM repo went unnoticed for 2 years

Biz & IT, code repositories, malware, npm, Security / /

Some of the payloads were limited to detonate only on specific dates in 2023, but in some cases a phase that was scheduled to begin in July of that year was given no termination date. Pandya said that means the threat remains persistent, although in an email he also wrote: “Since all activation dates have passed (June 2023–August 2024), any developer following normal package usage today would immediately trigger destructive payloads including system shutdowns, file deletion, and JavaScript prototype corruption.”

Interestingly, the NPM user who submitted the malicious packages, using the registration email address 1634389031@qq[.]com, also uploaded working packages with no malicious functions found in them. The approach of submitting both harmful and useful packages helped create a “facade of legitimacy” that increased the chances the malicious packages would go unnoticed, Pandya said. Questions emailed to that address received no response.

The malicious packages targeted users of some of the largest ecosystems for JavaScript developers, including React, Vue, and Vite. The specific packages were:

Anyone who installed any of these packages should carefully inspect their systems to make sure they’re no longer running. These packages perfectly mimic legitimate development tools, so it may be easy for them to have remained undetected.

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Hundreds of e-commerce sites hacked in supply-chain attack

backdoors, Biz & IT, magento, malware, Security, supply chain attack / /

Hundreds of e-commerce sites, at least one owned by a large multinational company, were backdoored by malware that executes malicious code inside the browsers of visitors, where it can steal payment card information and other sensitive data, security researchers said Monday.

The infections are the result of a supply-chain attack that compromised at least three software providers with malware that remained dormant for six years and became active only in the last few weeks. At least 500 e-commerce sites that rely on the backdoored software were infected, and it’s possible that the true number is double that, researchers from security firm Sansec said.

Among the compromised customers was a $40 billion multinational company, which Sansec didn’t name. In an email Monday, a Sansec representative said that “global remediation [on the infected customers] remains limited.”

Code execution on visitors’ machines

The supply chain attack poses a significant risk to the thousands or millions of people visiting the infected sites, because it allows attackers to execute code of their choice on ecommerce site servers. From there, the servers run info-stealing code on visitor machines.

“Since the backdoor allows uploading and executing arbitrary PHP code, the attackers have full remote code execution (RCE) and can do essentially anything they want,” the representative wrote. “In nearly all Adobe Commerce/Magento breaches we observe, the backdoor is then used to inject skimming software that runs in the user’s browser and steals payment information (Magecart).”

The three software suppliers identified by Sansec were Tigren, Magesolution (MGS), and Meetanshi. All three supply software that’s based on Magento, an open source e-commerce platform used by thousands of online stores. A software version sold by a fourth provider named Weltpixel has been infected with similar code on some of its customers’ stores, but Sansec so far has been unable to confirm whether it was the stores or Weltpixel that were hacked. Adobe has owned Megento since 2018.

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New Android spyware is targeting Russian military personnel on the front lines

android, Biz & IT, malware, Policy, russia, Security, spyware, Ukraine / /

Russian military personnel are being targeted with recently discovered Android malware that steals their contacts and tracks their location.

The malware is hidden inside a modified app for Alpine Quest mapping software, which is used by, among others, hunters, athletes, and Russian personnel stationed in the war zone in Ukraine. The app displays various topographical maps for use online and offline. The trojanized Alpine Quest app is being pushed on a dedicated Telegram channel and in unofficial Android app repositories. The chief selling point of the trojanized app is that it provides a free version of Alpine Quest Pro, which is usually available only to paying users.

Looks like the real thing

The malicious module is named Android.Spy.1292.origin. In a blog post, researchers at Russia-based security firm Dr.Web wrote:

Because Android.Spy.1292.origin is embedded into a copy of the genuine app, it looks and operates as the original, which allows it to stay undetected and execute malicious tasks for longer periods of time.

Each time it is launched, the trojan collects and sends the following data to the C&C server:

  • the user’s mobile phone number and their accounts;
  • contacts from the phonebook;
  • the current date;
  • the current geolocation;
  • information about the files stored on the device;
  • the app’s version.

If there are files of interest to the threat actors, they can update the app with a module that steals them. The threat actors behind Android.Spy.1292.origin are particularly interested in confidential documents sent over Telegram and WhatsApp. They also show interest in the file locLog, the location log created by Alpine Quest. The modular design of the app makes it possible for it to receive additional updates that expand its capabilities even further.

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