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Google on Wednesday revealed that it suspended over 39.2 million advertiser accounts in 2024, with a majority of them identified and blocked by its systems before it could serve harmful ads to users. In all, the tech giant said it stopped 5.1 billion bad ads, restricted 9.1 billion ads, and blocked or restricted ads on 1.3 billion pages last year. It also suspended over 5 million accounts for scam-related violations. In comparison, Google suspended over 12.7 million advertiser accounts, stopped 5.5 billion bad ads, restricted 6.9 billion ads, and blocked or restricted ads on 2.1 billion pages in 2023. The top six ad policy violations included ad network abuse (793.1 million), trademark misuse (503.1 million), personalized ads (491.3 million), legal requirements (280.3 million), financial services (193.7 million), and misrepresentation (146.9 million), among others. Most of the pages on which its ads were blocked or restricted include sexual content, dangerous or derogatory con...

Microsoft has disclosed details of a large-scale malvertising campaign that's estimated to have impacted over one million devices globally as part of what it said is an opportunistic attack designed to steal sensitive information. The tech giant, which detected the activity in early December 2024, is tracking it under the broader umbrella Storm-0408, a moniker used for a set of threat actors that are known to distribute remote access or information-stealing malware via phishing, search engine optimization (SEO), or malvertising. "The attack originated from illegal streaming websites embedded with malvertising redirectors, leading to an intermediary website where the user was then redirected to GitHub and two other platforms," the Microsoft Threat Intelligence team said . "The campaign impacted a wide range of organizations and industries, including both consumer and enterprise devices, highlighting the indiscriminate nature of the attack." The most signifi...

Cybersecurity researchers have discovered a malvertising campaign that's targeting Microsoft advertisers with bogus Google ads that aim to take them to phishing pages that are capable of harvesting their credentials. "These malicious ads, appearing on Google Search, are designed to steal the login information of users trying to access Microsoft's advertising platform," Jérôme Segura, senior director of research at Malwarebytes, said in a Thursday report. The findings came a few weeks after the cybersecurity company exposed a similar campaign that leveraged sponsored Google Ads to target individuals and businesses advertising via the search giant's advertising platform. The latest set of attacks targets users who search for terms like "Microsoft Ads" on Google Search, hoping to trick them into clicking on malicious links served in the form of sponsored ads in the search results pages. At the same time, the threat actors behind the campaign employ s...

Cybersecurity researchers have alerted to a new malvertising campaign that's targeting individuals and businesses advertising via Google Ads by attempting to phish for their credentials via fraudulent ads on Google. "The scheme consists of stealing as many advertiser accounts as possible by impersonating Google Ads and redirecting victims to fake login pages," Jérôme Segura, senior director of threat intelligence at Malwarebytes, said in a report shared with The Hacker News. It's suspected the end goal of the campaign is to reuse the stolen credentials to further perpetuate the campaigns, while also selling them to other criminal actors on underground forums. Based on posts shared on Reddit , Bluesky , and Google's own support forums , the threat has been active since at least mid-November 2024. The activity cluster is a lot similar to campaigns that leverage stealer malware to steal data related to Facebook advertising and business accounts in order to ...

Bogus software update lures are being used by threat actors to deliver a new stealer malware called CoinLurker . "Written in Go, CoinLurker employs cutting-edge obfuscation and anti-analysis techniques, making it a highly effective tool in modern cyber attacks," Morphisec researcher Nadav Lorber said in a technical report published Monday. The attacks make use of fake update alerts that employ various deceptive entry points such as software update notifications on compromised WordPress sites, malvertising redirects, phishing emails that link to spoofed update pages, fake CAPTCHA verification prompts , direct downloads from phoney or infected sites, and links shared via social media and messaging apps. Regardless of the method utilized to initiate the infection chain, the software update prompts make use of Microsoft Edge Webview2 to trigger the execution of the payload. "Webview2's dependency on pre-installed components and user interaction complicates dynami...

Cybersecurity researchers have shed light on a previously undocumented aspect associated with ClickFix-style attacks that hinge on taking advantage of a single ad network service as part of a malvertising-driven information stealer campaign dubbed DeceptionAds . "Entirely reliant on a single ad network for propagation, this campaign showcases the core mechanisms of malvertising — delivering over 1 million daily 'ad impressions' [in the last ten days] and causing thousands of daily victims to lose their accounts and money through a network of 3,000+ content sites funneling traffic," Nati Tal, head of Guardio Labs, said in a report shared with The Hacker News. The campaigns, as documented by several cybersecurity companies in recent months, involve directing visitors of pirated movie sites and others to bogus CAPTCHA verification pages that instruct them to copy and execute a Base64-encoded PowerShell command, ultimately leading to the deployment of information st...

Cybersecurity researchers have uncovered a surge in malware infections stemming from malvertising campaigns distributing a loader called FakeBat. "These attacks are opportunistic in nature, targeting users seeking popular business software," the Mandiant Managed Defense team said in a technical report. "The infection utilizes a trojanized MSIX installer, which executes a PowerShell script to download a secondary payload." FakeBat , also called EugenLoader and PaykLoader, is linked to a threat actor named Eugenfest. The Google-owned threat intelligence team is tracking the malware under the name NUMOZYLOD and has attributed the Malware-as-a-Service (MaaS) operation to UNC4536. Attack chains propagating the loader malware make use of drive-by download techniques to push users searching for popular software toward bogus lookalike sites that host booby-trapped MSI installers. Some of the malware families delivered via FakeBat include IcedID, RedLine Stealer, Lumma...

Facebook users are the target of a scam e-commerce network that uses hundreds of fake websites to steal personal and financial data using brand impersonation and malvertising tricks. Recorded Future's Payment Fraud Intelligence team, which detected the campaign on April 17, 2024, has given it the name ERIAKOS owing to the use of the same content delivery network (CDN) oss.eriakos[.]com. "These fraudulent sites were accessible only through mobile devices and ad lures, a tactic aimed at evading automated detection systems," the company said , noting the network comprised 608 fraudulent websites and that the activity spans several short-lived waves. A notable aspect of the sophisticated campaign is that it exclusively targeted mobile users who accessed the scam sites via ad lures on Facebook, some of which relied on limited-time discounts to entice users into clicking on them. Recorded Future said as many as 100 Meta Ads related to a single scam website were served in a ...

A now-patched security flaw in the Microsoft Defender SmartScreen has been exploited as part of a new campaign designed to deliver information stealers such as ACR Stealer, Lumma , and Meduza . Fortinet FortiGuard Labs said it detected the stealer campaign targeting Spain, Thailand, and the U.S. using booby-trapped files that exploit CVE-2024-21412 (CVSS score: 8.1). The high-severity vulnerability allows an attacker to sidestep SmartScreen protection and drop malicious payloads. Microsoft addressed this issue as part of its monthly security updates released in February 2024. "Initially, attackers lure victims into clicking a crafted link to a URL file designed to download an LNK file," security researcher Cara Lin said . "The LNK file then downloads an executable file containing an [HTML Application] script." The HTA file serves as a conduit to decode and decrypt PowerShell code responsible for fetching a decoy PDF file and a shellcode injector that, in tur...

A malvertising campaign is leveraging trojanized installers for popular software such as Google Chrome and Microsoft Teams to drop a backdoor called Oyster (aka Broomstick and CleanUpLoader). That's according to findings from Rapid7, which identified lookalike websites hosting the malicious payloads that users are redirected to after searching for them on search engines like Google and Bing. The threat actors are luring unsuspecting users to fake websites purporting to contain legitimate software. But attempting to download the setup binary launches a malware infection chain instead. Specifically, the executable serves as a pathway for a backdoor called Oyster, which is capable of gathering information about the compromised host, communicating with a hard-coded command-and-control (C2) address, and supporting remote code execution. While Oyster has been observed in the past being delivered by means of a dedicated loader component known as Broomstick Loader (aka Oyster Instal...

Threat actors have been observed making use of fake websites masquerading as legitimate antivirus solutions from Avast, Bitdefender, and Malwarebytes to propagate malware capable of stealing sensitive information from Android and Windows devices. "Hosting malicious software through sites which look legitimate is predatory to general consumers, especially those who look to protect their devices from cyber attacks," Trellix security researcher Gurumoorthi Ramanathan  said . The list of websites is below - avast-securedownload[.]com, which is used to deliver the  SpyNote trojan  in the form of an Android package file ("Avast.apk") that, once installed, requests for intrusive permissions to read SMS messages and call logs, install and delete apps, take screenshot, track location, and even mine cryptocurrency bitdefender-app[.]com, which is used to deliver a ZIP archive file ("setup-win-x86-x64.exe.zip") that deploys the  Lumma  information stealer malw...

A "multi-faceted campaign" has been observed abusing legitimate services like GitHub and FileZilla to deliver an array of stealer malware and banking trojans such as Atomic (aka AMOS), Vidar, Lumma (aka LummaC2), and Octo by impersonating credible software like 1Password, Bartender 5, and Pixelmator Pro. "The presence of multiple malware variants suggests a broad cross-platform targeting strategy, while the overlapping C2 infrastructure points to a centralized command setup — possibly increasing the efficiency of the attacks," Recorded Future's Insikt Group  said  in a report. The cybersecurity firm, which is tracking the activity under the moniker GitCaught, said the campaign not only highlights the misuse of authentic internet services to orchestrate cyber attacks, but also the reliance on multiple malware variants targeting Android, macOS, and Windows to increase the success rate. Attack chains entail the use of fake profile...

The financially motivated threat actor known as  FIN7  has been observed leveraging malicious Google ads spoofing legitimate brands as a means to deliver MSIX installers that culminate in the deployment of  NetSupport RAT . "The threat actors used malicious websites to impersonate well-known brands, including AnyDesk, WinSCP, BlackRock, Asana, Concur, The Wall Street Journal, Workable, and Google Meet," cybersecurity firm eSentire  said  in a report published earlier this week. FIN7 (aka Carbon Spider and Sangria Tempest) is a  persistent e-crime group  that's been active since 2013, initially dabbling in attacks targeting point-of-sale (PoS) devices to steal payment data, before pivoting to breaching large firms via ransomware campaigns. Over the years, the threat actor has refined its tactics and cyber weapon arsenal, adopting  various   custom malware  families such as BIRDWATCH, Carbanak, DICELOADER...

A new Google malvertising campaign is leveraging a cluster of domains mimicking a legitimate IP scanner software to deliver a previously unknown backdoor dubbed  MadMxShell . "The threat actor registered multiple look-alike domains using a typosquatting technique and leveraged Google Ads to push these domains to the top of search engine results targeting specific search keywords, thereby luring victims to visit these sites," Zscaler ThreatLabz researchers Roy Tay and Sudeep Singh  said . As many as 45 domains are said to have been registered between November 2023 and March 2024, with the sites masquerading as port scanning and IT management software such as Advanced IP Scanner, Angry IP Scanner, IP scanner PRTG, and ManageEngine. While this is  not the first time  threat actors are  banking  on  malvertising techniques  to serve malware via lookalike sites, the development marks the first time the delivery vehicle is being used to propagate a ...

Cybersecurity researchers have discovered a new Raspberry Robin campaign wave that has been propagating the malware through malicious Windows Script Files ( WSFs ) since March 2024. "Historically, Raspberry Robin was known to spread through removable media like USB drives, but over time its distributors have experimented with other initial infection vectors," HP Wolf Security researcher Patrick Schläpfer  said  in a report shared with The Hacker News. Raspberry Robin, also called QNAP worm, was  first spotted  in September 2021 that has since  evolved into a downloader  for various other payloads in recent years, such as SocGholish, Cobalt Strike, IcedID, BumbleBee, and TrueBot, and also serving as a precursor for ransomware. While the malware was initially distributed by means of USB devices containing LNK files that retrieved the payload from a compromised QNAP device, it has since  adopted other methods  such as social engineering and malv...

A new phishing campaign has set its eyes on the Latin American region to deliver malicious payloads to Windows systems. "The phishing email contained a ZIP file attachment that when extracted reveals an HTML file that leads to a malicious file download posing as an invoice," Trustwave SpiderLabs researcher Karla Agregado  said . The email message, the company said, originates from an email address format that uses the domain "temporary[.]link" and has Roundcube Webmail listed as the User-Agent string. The HTML file points containing a link ("facturasmex[.]cloud") that displays an error message saying "this account has been suspended," but when visited from an IP address geolocated to Mexico, loads a CAPTCHA verification page that uses Cloudflare Turnstile. This step paves the way for a redirect to another domain from where a malicious RAR file is downloaded. The RAR archive comes with a PowerShell script that gathers system metadata as well...