Vietnamese Cybercriminals Targeting Facebook Business Accounts with Malvertising

Malicious actors associated with the Vietnamese cybercrime ecosystem are leveraging advertising-as-a-vector on social media platforms such as Meta-owned Facebook to distribute malware. "Threat actors have long used fraudulent ads as a vector to target victims with scams, malvertising, and more,"...

DarkGate reloaded via malvertising and SEO poisoning campaigns

In July 2023, we observed a malvertising campaign that lured potential victims to a fraudulent site for a Windows IT management tool. Unlike previous similar attacks, the final payload was packaged differently and not immediately recognizable. The decoy file came as an MSI installer containing an...

Malvertisers up their game against researchers

Threat actors constantly take notice of the work and takedown efforts initiated by security researchers. In this constant game of cat and mouse chasing, tactics and techniques keep evolving from simple to more complex, and more covert. This is a trend we have observed time and time again, no matt...

Fruity Trojan Uses Deceptive Software Installers to Spread Remcos RAT

Threat actors are creating fake websites hosting trojanized software installers to trick unsuspecting users into downloading a downloader malware called Fruity with the goal of installing remote trojans tools like Remcos RAT. "Among the software in question are various instruments for fine-tuning...

Malvertising Attack Drops BlackCat Ransomware via Fake Search Results

By Waqas Happening through Google Search, hackers use a malicious ISO archive to distribute files that direct users to fake download pages of popular business applications. This is a post from HackRead.com Read the original post: Malvertising Attack Drops BlackCat Ransomware via Fake Search Resul...

New Malvertising Campaign Distributing Trojanized IT Tools via Google and Bing Search Ads

A new malvertising campaign has been observed leveraging ads on Google Search and Bing to target users seeking IT tools like AnyDesk, Cisco AnyConnect VPN, and WinSCP, and trick them into downloading trojanized installers with an aim to breach enterprise networks and likely carry out future...

A week in security (July 10 - 16)

Last week on Malwarebytes Labs: Tax preparation firms shared sensitive information with Meta Ransomware making big money through "big game hunting" Malwarebytes stops 100% of Advanced Threats in latest AV-Test assessment From Malvertising to Ransomware: A ThreatDown webinar recap Ransomware revie...

From Malvertising to Ransomware: A ThreatDown webinar recap

Our recent webinar From Malvertising to Ransomware highlight the clear connection between malvertising--the practice of embedding malicious code within legitimate online advertisements--and the epidemic of ransomware attacks affecting businesses globally. Presented by Mark Stockley, security...

Beware of Big Head Ransomware: Spreading Through Fake Windows Updates

A developing piece of ransomware called Big Head is being distributed as part of a malvertising campaign that takes the form of bogus Microsoft Windows updates and Word installers. Big Head was first documented by Fortinet FortiGuard Labs last month, when it discovered multiple variants of the...

Malicious ad for USPS fishes for banking credentials

We often think of malvertising as being malicious ads that push malware or scams, and quite rightly so these are probably the most common payloads. However, malvertising is also a great vehicle for phishing attacks which we usually see more often via spam emails. Threat actors continue to abuse a...

BlackCat Operators Distributing Ransomware Disguised as WinSCP via Malvertising

Threat actors associated with the BlackCat ransomware have been observed employing malvertising tricks to distribute rogue installers of the WinSCP file transfer application. "Malicious actors used malvertising to distribute a piece of malware via cloned webpages of legitimate organizations," Tre...

BlackCat Operators Distributing Ransomware Disguised as WinSCP via Malvertising

Threat actors associated with the BlackCat ransomware have been observed employing malvertising tricks to distribute rogue installers of the WinSCP file transfer application. "Malicious actors used malvertising to distribute a piece of malware via cloned webpages of legitimate organizations," Tre...

A week in security (June 26 - July 2)

Last week on Malwarebytes Labs: A proxyjacking campaign is looking for vulnerable SSH servers New technique can defeat voice authentication "after only six tries" "Free" Evil Dead Rise movie scam lurks in Amazon listings Spyware app LetMeSpy hacked, tracked user data posted online Online safety...

Malvertising Used as Entry Vector for BlackCat, Actors Also Leverage SpyBoy Terminator

We found that malicious actors used malvertising to distribute malware via cloned webpages of legitimate organizations. The distribution involved a webpage of the well-known application WinSCP, an open-source Windows application for file transfer. We were able to identify that this activity led t...

Malvertising: A stealthy precursor to infostealers and ransomware attacks

This article is based on research by Jerome Segura, Senior Director of Threat Intelligence at Malwarebytes, who oversees data collection from spam feeds and telemetry to identify the most relevant threats. Malvertising, the practice of using online ads to spread malware, can have dire...

Actors, Threats and Vulnerabilities 5 June to 11 June 2023

For a detailed threat digest, download the pdf file here Summary HiveForce Labs recently made several significant discoveries related to cybersecurity threats. Over the past week, the fact that there were a total of seven attacks executed, taking advantage of five different vulnerabilities in...

A week in security (May 22-28)

Last week on Malwarebytes Labs: Update now: 9 vulnerabilities impact Cisco Small Business Series ChatGPT: Cybersecurity friend or foe? Webinar recap: EDR vs MDR for business success Identity crisis: How an anti-porn crusade could jam the Internet, featuring Alec Muffett: Lock and Code S04E11...

Malvertising via brand impersonation is back again

Web search is about to embark on a new journey thanks to artificial intelligence technology that online giants such as Microsoft and Google are experimenting with. Yet, there is a problem when it comes to malicious ads displayed by search engines that AI likely won't be able to fix. In recent...

Fake system update drops Aurora stealer via Invalid Printer loader

Malvertising seems to be enjoying a renaissance as of late, whether it is from ads on search engine results pages or via popular websites. Because browsers are more secure today than they were 5 or 10 years ago, the attacks that we are seeing all involve some form of social engineering. A threat...

LOBSHOT: A Stealthy, Financial Trojan and Info Stealer Delivered through Google Ads

In yet another instance of how threat actors are abusing Google Ads to serve malware, a threat actor has been observed leveraging the technique to deliver a new Windows-based financial trojan and information stealer called LOBSHOT. "LOBSHOT continues to collect victims while staying under the...