Threat Source newsletter (Feb. 9, 2023): Don't let criminals exploit your empathy

Welcome to this weeks edition of the Threat Source newsletter. Our hearts are with the people of Turkey and Syria and all those impacted by the tragic earthquake. The Cisco Foundation has launched a matching campaign to support local disaster relief organizations. As a person its always difficult...

FormBook Malware Spreads via Malvertising Using MalVirt Loader to Evade Detection

An ongoing malvertising campaign is being used to distribute virtualized .NET loaders that are designed to deploy the FormBook information-stealing malware. "The loaders, dubbed MalVirt, use obfuscated virtualization for anti-analysis and evasion along with the Windows Process Explorer driver for...

FormBook Malware Spreads via Malvertising Using MalVirt Loader to Evade Detection

An ongoing malvertising campaign is being used to distribute virtualized .NET loaders that are designed to deploy the FormBook information-stealing malware. "The loaders, dubbed MalVirt, use obfuscated virtualization for anti-analysis and evasion along with the Windows Process Explorer driver for...

A week in security (January 30 - February 5)

Last week on Malwarebytes Labs: A private moment, caught by a Roomba, ended up on Facebook. Eileen Guo explains how: Lock and Code S04E03 New data wipers deployed against Ukraine Update your LearnPress plugins now! Riot Games refuses to pay ransom to avoid League of Legends leak Analyzing and...

MalVirt: .NET Malware Loaders Spread through Malvertising Attacks

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary MalVirt is a cluster of virtualized .NET malware loaders are distributed through malvertising attacks that use obfuscated virtualization and the Windows Process Explorer driver to evade anti-analysis and...

Google sponsored ads malvertising targets password manager

We have recently written about malvertising campaigns that leverage Google paid advertisements to try and trick people into downloading malware instead of the software they were looking for. This malware then stole login credentials from the affected system. Now, our researchers found that the...

Massive Ad Fraud Scheme Targeted Over 11 Million Devices with 1,700 Spoofed Apps

Researchers have shut down an "expansive" ad fraud scheme that spoofed more than 1,700 applications from 120 publishers and impacted roughly 11 million devices. "VASTFLUX was a malvertising attack that injected malicious JavaScript code into digital ad creatives, allowing the fraudsters to stack...

Massive Ad Fraud Scheme Targeted Over 11 Million Devices with 1,700 Spoofed Apps

Researchers have shut down an "expansive" ad fraud scheme that spoofed more than 1,700 applications from 120 publishers and impacted roughly 11 million devices. "VASTFLUX was a malvertising attack that injected malicious JavaScript code into digital ad creatives, allowing the fraudsters to stack...

New Research Delves into the World of Malicious LNK Files and Hackers Behind Them

Cybercriminals are increasingly leveraging malicious LNK files as an initial access method to download and execute payloads such as Bumblebee, IcedID, and Qakbot. A recent study by cybersecurity experts has shown that it is possible to identify relationships between different threat actors by...

Malware Distribution via Google PPC by IcedID Botnet Distributors

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The IcedID botnet has been using Google pay-per-click ads to distribute itself through malvertising attacks since December 2022. Malvertising involves the use of malicious ads that are displayed in searc...

New Malvertising Campaign via Google Ads Targets Users Searching for Popular Software

Users searching for popular software are being targeted by a new malvertising campaign that abuses Google Ads to serve trojanized variants that deploy malware, such as Raccoon Stealer and Vidar. The activity makes use of seemingly credible websites with typosquatted domain names that are surfaced...

IcedID Botnet Distributors Abuse Google PPC to Distribute Malware

We analyze the latest changes in IcedID botnet from a campaign that abuses Google pay per click PPC ads to distribute IcedID via malvertising attacks...

Microsoft Warns of Hackers Using Google Ads to Distribute Royal Ransomware

A developing threat activity cluster has been found using Google Ads in one of its campaigns to distribute various post-compromise payloads, including the recently discovered Royal ransomware. Microsoft, which spotted the updated malware delivery method in late October 2022, is tracking the group...

DEV-0569 finds new ways to deliver Royal ransomware, various payloads

Recent activity from the threat actor that Microsoft tracks as DEV-0569, known to distribute various payloads, has led to the deployment of the Royal ransomware, which first emerged in September 2022 and is being distributed by multiple threat actors. Observed DEV-0569 attacks show a pattern of...

DEV-0569 finds new ways to deliver Royal ransomware, various payloads

Recent activity from the threat actor that Microsoft tracks as DEV-0569, known to distribute various payloads, has led to the deployment of the Royal ransomware, which first emerged in September 2022 and is being distributed by multiple threat actors. Observed DEV-0569 attacks show a pattern of...

Researchers Detail New Malware Campaign Targeting Indian Government Employees

The Transparent Tribe threat actor has been linked to a new campaign aimed at Indian government organizations with trojanized versions of a two-factor authentication solution called Kavach. "This group abuses Google advertisements for the purpose of malvertising to distribute backdoored versions ...

These Android Apps with a Million Play Store Installations Redirect Users to Malicious Sites

A set of four Android apps released by the same developer has been discovered directing victims to malicious websites as part of an adware and information-stealing campaign. The apps, published by a developer named Mobile apps Group and currently available on the Play Store, have been collectivel...

A week in security (September 12 – 18)

Last week on Malwarebytes Labs: The North Face hit by credential stuffing attack Facebook engineers aren't sure where all user data is kept 6 patch management best practices for businesses The MSP playbook on deciphering tech promises and shaping security culture Apple puts the password on life...

Malvertising on Microsoft Edge's News Feed pushes tech support scams

While Google Chrome still dominates as the top browser, Microsoft Edge, which is based on the Chromium source code, is gradually gaining more users. Perhaps more importantly, it is the default browser on the Microsoft Windows platform and as such some segments of its user base are of particular...

Apple releases security update for iPhones and iPads to address vulnerability

Apple has released a security update for iOS 12.5.6 to patch a remotely exploitable WebKit vulnerability that allows attackers to execute arbitrary code on unpatched devices. The WebKit zero-day that is known as CVE-2022-32893 was fixed for iOS 15.6.1, iPadOS 15.6, and macOS Monterey 12.5.1 on...