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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

As a vCISO, you are responsible for your client's cybersecurity strategy and risk governance. This incorporates multiple disciplines, from research to execution to reporting. Recently, we published a comprehensive playbook for vCISOs, "Your First 100 Days as a vCISO – 5 Steps to Success" , which covers all the phases entailed in launching a successful vCISO engagement, along with recommended actions to take, and step-by-step examples.  Following the success of the playbook and the requests that have come in from the MSP/MSSP community, we decided to drill down into specific parts of vCISO reporting and provide more color and examples. In this article, we focus on how to create compelling narratives within a report, which has a significant impact on the overall MSP/MSSP value proposition.  This article brings the highlights of a recent guided workshop we held, covering what makes a successful report and how it can be used to enhance engagement with your cyber security clients.

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 profiles and repositories on GitHub,

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 (aka Lizar and Tirion), POWERPLANT, POWERTRASH, and TERMITE, amo

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 sophisticated Windows backdoo

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 malvertising. It's attribute

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

The threat actor known as  TA558  has been attributed to a new massive phishing campaign that targets a wide range of sectors in Latin America with the goal of deploying Venom RAT. The attacks primarily singled out hotel, travel, trading, financial, manufacturing, industrial, and government verticals in Spain, Mexico, the United States, Colombia, Portugal, Brazil, Dominican Republic, and Argentina. Active since at least 2018, TA558 has a  history  of  targeting entities  in the LATAM region to deliver a variety of malware such as Loda RAT, Vjw0rm, and Revenge RAT. The latest infection chain, according to Perception Point researcher  Idan Tarab , leverages phishing emails as an initial access vector to drop  Venom RAT , a fork of Quasar RAT that comes with  capabilities  to harvest sensitive data and commandeer systems remotely. The disclosure comes as threat actors have been increasingly observed using the  DarkGate  malware loader following the  law enforcement takedown of QakBo

Malicious ads and bogus websites are acting as a conduit to deliver two different stealer malware, including Atomic Stealer, targeting Apple macOS users. The ongoing infostealer attacks targeting macOS users may have adopted different methods to compromise victims' Macs, but operate with the end goal of stealing sensitive data, Jamf Threat Labs  said  in a report published Friday. One such attack chain targets users searching for Arc Browser on search engines like Google to serve bogus ads that redirect users to look-alike sites ("airci[.]net") that serve the malware. "Interestingly, the malicious website cannot be accessed directly, as it returns an error," security researchers Jaron Bradley, Ferdous Saljooki, and Maggie Zirnhelt said. "It can only be accessed through a generated sponsored link, presumably to evade detection." The disk image file downloaded from the counterfeit website ("ArcSetup.dmg") delivers  Atomic Stealer , which i

Chinese users looking for legitimate software such as Notepad++ and VNote on search engines like Baidu are being targeted with malicious ads and bogus links to distribute trojanized versions of the software and ultimately deploy  Geacon , a Golang-based implementation of Cobalt Strike. "The malicious site found in the notepad++ search is distributed through an advertisement block," Kaspersky researcher Sergey Puzan  said . "Opening it, an attentive user will immediately notice an amusing inconsistency: the website address contains the line vnote, the title offers a download of Notepad‐‐ (an analog of Notepad++, also distributed as open-source software), while the image proudly shows Notepad++. In fact, the packages downloaded from here contain Notepad‐‐." The website, named vnote.fuwenkeji[.]cn, contains download links to Windows, Linux, and macOS versions of the software, with the link to the Windows variant pointing to the official  Gitee repository  containing the Notepad-- ins

Threat actors are leveraging bogus Facebook job advertisements as a lure to trick prospective targets into installing a new Windows-based stealer malware codenamed  Ov3r_Stealer . "This malware is designed to steal credentials and crypto wallets and send those to a Telegram channel that the threat actor monitors," Trustwave SpiderLabs said in a report shared with The Hacker News. Ov3r_Stealer is capable of siphoning IP address-based location, hardware info, passwords, cookies, credit card information, auto-fills, browser extensions, crypto wallets, Microsoft Office documents, and a list of antivirus products installed on the compromised host. While the exact end goal of the campaign is unknown, it's likely that the stolen information is offered for sale to other threat actors. Another possibility is that Ov3r_Stealer could be updated over time to act as a  QakBot-like loader  for additional payloads, including ransomware. The starting point of the attack is a weapo

Chinese-speaking users have been targeted by malicious Google ads for restricted messaging apps like Telegram as part of an ongoing malvertising campaign. "The threat actor is abusing Google advertiser accounts to create malicious ads and pointing them to pages where unsuspecting users will download Remote Administration Trojan (RATs) instead," Malwarebytes' Jérôme Segura  said  in a Thursday report. "Such programs give an attacker full control of a victim's machine and the ability to drop additional malware." It's worth noting that the activity, codenamed  FakeAPP , is a continuation of a  prior attack wave  that targeted Hong Kong users searching for messaging apps like WhatsApp and Telegram on search engines in late October 2023. The latest iteration of the campaign also adds messaging app LINE to the list of messaging apps, redirecting users to bogus websites hosted on Google Docs or Google Sites. The Google infrastructure is used to embed link

Cybersecurity researchers have identified an updated version of a macOS information stealer called  Atomic  (or AMOS), indicating that the threat actors behind the malware are actively enhancing its capabilities. "It looks like Atomic Stealer was updated around mid to late December 2023, where its developers introduced payload encryption in an effort to bypass detection rules," Malwarebytes' Jérôme Segura  said  in a Wednesday report. Atomic Stealer  first emerged  in April 2023 for a monthly subscription of $1,000. It's capable of harvesting sensitive information from a compromised host, including Keychain passwords, session cookies, files, crypto wallets, system metadata, and the machine's password via a fake prompt. Over the past several months, the malware has been observed propagated via  malvertising  and  compromised sites  under the guise of legitimate software and web browser updates. Malwarebytes' latest analysis shows that Atomic Stealer is no

Cybersecurity researchers are warning about an increase in phishing attacks that are capable of draining cryptocurrency wallets. "These threats are unique in their approach, targeting a wide range of blockchain networks, from Ethereum and Binance Smart Chain to Polygon, Avalanche, and almost 20 other networks by using a crypto wallet-draining technique," Check Point researchers Oded Vanunu, Dikla Barda, and Roman Zaikin  said . A prominent contributor to this troubling trend is a notorious phishing group called Angel Drainer, which advertises a "scam-as-a-service" offering by charging a percentage of the stolen amount,  typically 20% or 30% , from its collaborators in return for providing wallet-draining scripts and other services. In late November 2023, a similar wallet-draining service known as Inferno Drainer announced that it was  shutting down its operations  for good after helping scammers plunder over $70 million worth of crypto from 103,676 victims sinc

The malware loader known as PikaBot is being distributed as part of a  malvertising   campaign  targeting users searching for legitimate software like AnyDesk. "PikaBot was previously only distributed via malspam campaigns similarly to QakBot and emerged as one of the preferred payloads for a threat actor known as TA577," Malwarebytes' Jérôme Segura  said . The malware family, which  first   appeared  in early 2023, consists of a loader and a core module that allows it to operate as a backdoor as well as a distributor for other payloads. This  enables  the threat actors to gain unauthorized remote access to compromised systems and transmit commands from a command-and-control (C2) server, ranging from arbitrary shellcode, DLLs, or executable files, to other malicious tools such as Cobalt Strike. One of the threat actors leveraging PikaBot in its attacks is  TA577 , a prolific cybercrime threat actor that has, in the past, delivered QakBot, IcedID, SystemBC, SmokeLoad

Microsoft has warned of a new wave of CACTUS ransomware attacks that leverage malvertising lures to deploy DanaBot as an initial access vector. The DanaBot infections led to "hands-on-keyboard activity by ransomware operator Storm-0216 (Twisted Spider, UNC2198), culminating in the deployment of CACTUS ransomware," the Microsoft Threat Intelligence team  said  in a series of posts on X (formerly Twitter). DanaBot , tracked by the tech giant as Storm-1044, is a multi-functional tool along the lines of Emotet, TrickBot, QakBot, and IcedID that's capable of acting as a stealer and a point of entry for next-stage payloads. UNC2198, for its part, has been previously observed infecting endpoints with IcedID to deploy ransomware families such as Maze and Egregor, as  detailed  by Google-owned Mandiant in February 2021. Per Microsoft, the threat actor has also taken advantage of initial access provided by QakBot infections. The shift to DanaBot, therefore, is likely the resu