Every tech expert will tell you the App Store is safer than Google Play Store. Some might even claim it is impossible to download a malicious app from the App Store, but they are wrong. While I admit the App Store is a secure and tightly controlled ecosystem, it cannot completely shield you. Security researchers have found that hackers are targeting several apps on the App Store to spread malware that steals information from screenshots saved on a device. The issue also affects those downloading apps from the Google Play Store.
How the malware works and what makes it different
According to researchers at Kaspersky, this malware campaign is more advanced than typical info stealers, both in how it works and how it spreads. Instead of relying on social engineering tricks to get users to grant permissions like most banking trojans or spyware, this malware hides inside seemingly legitimate apps and slips past Apple and Google’s security checks.
One of its standout features is Optical Character Recognition. Instead of stealing stored files, it scans screenshots saved on the device, extracts text, and sends the information to remote servers.
Once installed, the malware operates stealthily, often activating only after a period of dormancy to avoid raising suspicion. It employs encrypted communication channels to send stolen data back to its operators, making it difficult to trace. Plus, it spreads through deceptive updates or hidden code within app dependencies, an approach that helps it evade initial security screenings by app store review teams.
The infection vectors vary between Apple and Google’s ecosystems. On iOS, the malware is often embedded within apps that initially pass Apple’s rigorous review process but later introduce harmful functionality through updates. On Android, the malware can exploit sideloading options, but even official Google Play apps have been found to carry these malicious payloads, sometimes hidden within SDKs supplied by third-party developers.
Credit: Kaspersky
What’s being stolen, and who’s responsible?
The scope of stolen information is alarming. This malware primarily targets crypto wallet recovery phrases but is also capable of exfiltrating login credentials, payment details, personal messages, location data, and even biometric identifiers. Some versions are designed to harvest authentication tokens, allowing attackers to access accounts even if users change their passwords.
The apps serving as malware carriers include ComeCome, ChatAi, WeTink, AnyGPT, and more. These range from productivity tools to entertainment and utility apps. In some cases, malicious developers create these apps with full knowledge of the malware’s purpose. In others, the issue appears to be a supply chain vulnerability, where legitimate developers unknowingly integrate compromised SDKs or third-party services that introduce malicious code into their applications.
Credit: Kaspersky
Apple’s response to screenshot-scanning malware discovered in App Store
Apple has removed the 11 iOS apps mentioned in Kaspersky’s report from the App Store. Furthermore, they discovered that these 11 apps shared code signatures with 89 other iOS apps, all of which had been previously rejected or removed for violating Apple’s policies, resulting in the termination of their developer accounts.
Apps requesting access to user data such as Photos, Camera, or Location must provide relevant functionality or face rejection. They must also clearly explain their data usage when prompting users for permission. iOS privacy features ensure users always control whether their location information is shared with an app. Also, starting in iOS 14, the PhotoKit API— which allows apps to request access to a user’s Photos library — added additional controls to let users select only specific photos or videos to share with an app instead of providing access to their entire library.
The App Store Review Guidelines mandate that developers are responsible for ensuring their entire app, including ad networks, analytics services, and third-party SDKs, complies with the guidelines. Developers must carefully review and choose these components. Apps must also accurately represent their privacy practices, including those of the SDKs they use, in their privacy labels.
In 2023, the App Store rejected over 1.7 million app submissions for failing to meet its stringent privacy, security, and content standards. It also rejected 248,000 app submissions found to be spam, copycats, or misleading and prevented 84,000 potentially fraudulent apps from reaching users.
What Google is doing to stop malware
A Google spokesperson tells CyberGuy,
All of the identified apps have been removed from Google Play and the developers have been banned. Android users are automatically protected from known versions of this malware by Google Play Protect, which is on by default on Android devices with Google Play Services.
However, it is important to note that Google Play Protect may not be enough. Historically, it isn’t 100% foolproof at removing all known malware from Android devices. Here’s why:
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5 ways users can protect themselves from such malware
1) Use strong antivirus software: Installing strong antivirus software can add an extra layer of protection by scanning apps for malware, blocking suspicious activity, and alerting you to potential threats. The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.
My top pick is TotalAV, and you can get a limited-time deal for CyberGuy readers: $19 your first year (80% off) for the TotalAV Antivirus Pro package.
2) Stick to trusted developers and well-known apps: Even though malware has been found in official app stores, users can still minimize their risk by downloading apps from reputable developers with a long track record. Before installing an app, check its developer history, read multiple reviews, and look at the permissions it requests. If an app from an unknown developer suddenly gains popularity but lacks a strong review history, approach it with caution.
3) Review app permissions carefully: Many malicious apps disguise themselves as legitimate tools but request excessive permissions that go beyond their stated purpose. For example, a simple calculator app should not need access to your contacts, messages, or location. If an app asks for permissions that seem unnecessary, consider it a red flag and either deny those permissions or avoid installing the app altogether. Go to your phone settings and check app permissions on your iPhone and Android.
4) Keep your device and apps updated: Cybercriminals exploit vulnerabilities in outdated software to distribute malware. Always keep your operating system and apps updated to the latest versions, as these updates often contain critical security patches. Enabling automatic updates ensures that you stay protected without having to manually check for new versions.
5) Be wary of apps that promise too much: Many malware-infected apps lure users by offering features that seem too good to be true—such as free premium services, extreme battery optimizations, or AI-powered functionality that appears unrealistic. If an app’s claims sound exaggerated or its download numbers skyrocket overnight with questionable reviews, it’s best to avoid it. Stick to apps with a transparent development team and verifiable functionalities.
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Kurt’s key takeaway
The new malware campaign highlights the need for stricter vetting processes, continuous monitoring of app behavior post-approval, and greater transparency from app stores regarding security risks. While Apple and Google have removed the malicious apps upon detection, the fact that they made it onto the platform in the first place exposes a gap in the existing security framework. As cybercriminals refine their methods, app stores must evolve just as quickly or risk losing the trust of the very users they claim to protect.
Do you think app stores should take more responsibility for malware slipping through? Let us know in the comments below.
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