How Hackers Access Android Credentials via Windows Devices

If you have used WhiteIntel’s APK scanning feature, chances are you have encountered a log that looks like this:

Wait a second.. You are hunting for APK infostealer leaks, but on the log information Device is showing up as a Windows machine. This has to be a bug or a parsing error, right? Surely infostealers are not that advanced, they can’t just infect a computer and then move into the victim's mobile device.. Right? Yeah, that’s right, this is not a parsing error and infostealer malware can not laterally move into different devices on the network.. Not that they couldn't, they just won't.There is a third, more sinister explanation.

Introducing Google Smart Lock and Google Chrome Sync

Google Smart Lock and Chrome Sync are designed to make people’s lives easier. They remember passwords, autofill login details, and keep everything in sync between mobile devices and computers. But behind that convenience is a hidden security gap that infostealer malware is actively exploiting.

Understanding Google Smart Lock and Chrome Sync

Google Smart Lock is a tool that stores your passwords and app login details under your Google account. On Android, it helps you log in quickly to apps like banking platforms, email clients, or shopping apps without needing to remember each password.

Chrome Sync builds on this by syncing data like saved passwords, browsing history, and bookmarks across any device signed into the same Google account. That means if you log into Chrome on both your Android phone and Windows PC, your data -credentials included- moves between them automatically.

The Problem With Cross-Device Sync

Here’s where the issue starts: when Chrome Sync is turned on, passwords saved on mobile devices can show up on your Windows machine. These mobile app credentials are stored in Chrome’s local password database and can be identified by entries starting with android://, like android://hash@com.app.package/. on the WhiteIntel Platform.

If a Windows device becomes infected with an infostealer malware, it can detect Chrome profile and pull those Android credentials, even though they were never “saved” on the infected device. In other words, an attacker could get access to mobile application credentials just by infecting the Windows device.

Google Smart Lock plays a role in this too. It syncs app credentials through your Google account, and if the Chrome on the  infected device is linked and syncing, those credentials become available locally. That makes them easy targets for malware that knows where to look.

Why This Matters

The key takeaway here is that Android credentials can be compromised without the phone itself ever being touched. Hackers are getting them by infecting desktops and grabbing synced data. If your PC is compromised, so is the credentials that are stored at the mobile device- at least indirectly.

This is not a theoretical attack. Infostealer Malware variants like RedLine, Raccoon, and others are already doing this in the wild. Once they grab the synced credentials, attackers can log into mobile accounts, bypassing traditional device-based security.

How WhiteIntel Helps

WhiteIntel continuously scans the infostealer malware log sources for any and all leaks available publicly and indexes the information available on the platform. Enterprise Security Teams, MSSP’s and Researcher can access the data via WhiteIntel Platform either by the GUI application or via the WhiteIntel API. Ready to talk to an expert? Contact us info[at]whiteintel[.]io or send us a message on WhiteIntel - Contact Form and we will get back to you!