Understanding Malvertising Attacks

A common theme in cybersecurity recently has been the increasing innovation of attack methods.

We have witnessed an uptick in the use of highly evasive threat techniques designed to enable threats actors to bypass traditional security tools - from secure web gateways and firewalls to phishing detection tools and malware analysis engines.  

Malvertising is a particularly interesting and often complex attack technique used by attackers where malicious code is embedded into online and banner ads, videos, and other forms of digital advertising after successfully compromising third party servers. If someone then clicks on a compromised ad, they could either be redirected to spoofed websites created using social engineering tactics, or malware is downloaded directly onto their device. 

The aim is to execute malware on a user’s endpoint. If this is achieved, a range of malicious activities can be carried out – from changing, deleting, or leaking data on the dark web, to redirecting internet traffic to malicious websites, and developing backdoor routes to vital network systems.  

Capitalising On Lack Of Awareness

We are predicting a spike in malvertising campaigns during the latter half of 2023 with the emergence of image generators such as DALL.E and Midjourney, and AI tools like ChatGPT, which threat actors can use to create convincing malvertising campaigns that users are often unaware of. 

In a recent survey, Menlo Security found that 70% of respondents were unaware that endpoint devices could be infected with malware through clicking on a brand logo. This is despite the fact that the vast majority of people admit they click on advertisements online ‘to some extent’.

Almost half of our sample (48%) were unaware that they could be infected by clicking on social media ads, while one in four were oblivious to the potential threats posed by pop-ups and banners. This compares to other more high profile threats like phishing, with around three-quarters of respondents aware they can be infected by malware when they click on an email link.

It can be difficult for users and publishers to identify the difference between what ads are genuine and which are malicious, especially when both serve consumers through legitimate advertising networks. It’s estimated that around one in 100 online ads is malicious at present.

Even the most credible brands and websites are not immune to malvertising. A recent study by Menlo Security revealed that Microsoft, Facebook, and Amazon were the top three most impersonated brands by malicious threat actors attempting to steal personal or confidential data.

Best Practice For Combatting Malvertising 

The opportunity for threat actors is on the rise. Unlike email-based attacks and other methods, many of us are not aware that digital ads can be leveraged as a highly convincing attack vector.

Given the threats, it’s important that users online follow best practice in order to combat this threat. 

1.    Check the brand logo:   It’s important to look closely at the brand logo. Is it squashed, pixilated or stretched? Are the colours odd? These could be signs an advert is not legitimate. 

2.    Check the URL:   By scanning over the ad (but not clicking) the URL will appear. This allows users to check for any anomalies – threat actors may just change one or two characters, but these can always be spotted on close inspection.

3.    Do not assume credible websites are safe:   Credible websites are likely to have higher ad vetting processes, but this does not mean they are immune to malvertising. The same rules apply – always be cautious when clicking on ads.

4.    Beware of calls to action:   While marketers are more interested in gather data surrounding impressions and conversions, attackers will be pushier. Any ad asking to ‘buy now’ or ‘click here’ should be treated with extreme caution. 

5.    Beware of redirects:   Any new ad you click on is likely to take you to a new website with lower vetting procedures than the one before. You are only three to seven clicks away from malware online, so the more ads you click on, the higher chance you have of encountering malware.

The lack of malvertising awareness combined with greater and easier access to AI tools and image generators provides the perfect cocktail for even relatively inexperienced threat actors to exploit.

We expect an uptick in these types of attacks over the coming months so it’s important that organisations and end users get ahead of the game now. 

Tom McVey is Senior Sales Engineer EMEA at Menlo Security

You Might Also Read: 

Malvertising Proliferates As Half Of Online Ads Are Now AI Generated:

___________________________________________________________________________________________

If you like this website and use the comprehensive 6,500-plus service supplier Directory, you can get unrestricted access, including the exclusive in-depth Directors Report series, by signing up for a Premium Subscription.

  • Individual £5 per month or £50 per year. Sign Up
  • Multi-User, Corporate & Library Accounts Available on Request

Cyber Security Intelligence: Captured Organised & Accessible


 

 

« Embracing The Passwordless Future
DORA: Compliance With The EU Digital Resilience Act »

CyberSecurity Jobsite
Check Point

Directory of Suppliers

North Infosec Testing (North IT)

North Infosec Testing (North IT)

North IT (North Infosec Testing) are an award-winning provider of web, software, and application penetration testing.

MIRACL

MIRACL

MIRACL provides the world’s only single step Multi-Factor Authentication (MFA) which can replace passwords on 100% of mobiles, desktops or even Smart TVs.

XYPRO Technology

XYPRO Technology

XYPRO is the market leader in HPE Non-Stop Security, Risk Management and Compliance.

Directory of Cyber Security Suppliers

Directory of Cyber Security Suppliers

Our Supplier Directory lists 8,000+ specialist cyber security service providers in 128 countries worldwide. IS YOUR ORGANISATION LISTED?

The PC Support Group

The PC Support Group

A partnership with The PC Support Group delivers improved productivity, reduced costs and protects your business through exceptional IT, telecoms and cybersecurity services.

Huawei

Huawei

Huawei is a leading global ICT solutions provider. with end-to-end capabilities across the carrier networks, enterprise, consumer, and cloud computing fields.

iXsystems

iXsystems

iXsystems is a leader in Open-Source enterprise server and storage solutions including Backup & Recovery to protect critical data.

Arxan Technologies

Arxan Technologies

Arxan is a leader of application attack-prevention and self-protection products for Internet of Things (IoT), Mobile, Desktop, and other applications.

Trapezoid

Trapezoid

Trapezoid is a cybersecurity company developing Firmware Integrity Management solutions designed to detect unauthorized changes to firmware & BIOS across the entire data center infrastructure.

CSC Cyber Games

CSC Cyber Games

CSC Cyber Games is an innovative platform dedicated to empowering individuals with the tools and knowledge to excel in the ever-evolving world of cybersecurity.

Hypersecu Information Systems

Hypersecu Information Systems

Hypersecu Information Systems, Inc. is a solution provider dedicated to multi-factor authentication, public key infrastructure and software copyright protection.

Calero Software

Calero Software

Calero is a leading global provider of Communications and Cloud Lifecycle Management (CLM) solutions designed to simplify the management of voice, mobile and other unified communications services.

Armis

Armis

Armis offers the markets leading asset intelligence platform designed to address the new threat landscape that connected devices create.

Applied Magnetics Laboratory (AML)

Applied Magnetics Laboratory (AML)

Applied Magnetics Laboratory is a manufacturer of military security and data destruction equipment for sensitive, classified, and secret information.

GB Group (GBG)

GB Group (GBG)

GBG is a global technology specialist in fraud, location and identity data intelligence.

FortifyIQ

FortifyIQ

FortifyIQ's mission is to advance maximum security against side-channel attacks across the entire computing spectrum.

Testhouse Ltd

Testhouse Ltd

Testhouse is a thought leader in the Quality Assurance, software testing and DevOps space. Founded in the year 2000 in London, UK, with a mission to contribute towards a world of high-quality software

Hadrian

Hadrian

Hadrian is modernizing offensive security practices with automation, making them faster and more scalable. Equipped with the hacker’s perspective, companies can now know what their critical risks are.

ITQ Latam

ITQ Latam

ITQ Latam are specialists in cybersecurity, in a convergent ecosystem of technological solutions in infrastructure, cloud and security networks.

CESAR

CESAR

CESAR is one of the premier R+D and innovation centers in Brazil and a designated Cybersecurity Competence Center.

Telenor Cyberdefence

Telenor Cyberdefence

Telenor Cyberdefence is a newly established (2024) cloud-born Managed Security Service Provider focused on the Nordic markets.