n1cdatadev-nrfru.ondigitalocean.app

About Flutter Banking Overlay (provisional)

A **Flutter**-built Android banking trojan distributed as a betting/casino app (observed package `com.apkhadesbet`, a "hadesbet" gambling lure). Flutter apps compile their real logic to a native Dart "snapshot" inside `lib/<abi>/libapp.so` instead of to normal Java/DEX code, so both the behaviour and the C2 live in that `.so` file rather than in the usual Android code. **What it does** - Bundles a second payload APK (`assets/bound_payload.apk`) that it installs/loads. - Uses `flutter_inappwebview` (an embedded browser) to pop **fake bank-login overlays** on top of real apps and harvest credentials. Observed targeting **Canadian** institutions - RBC (`royalbank.com`), BMO (`bmodigitalbanking.com`), CIBC, Desjardins, Domino - plus the **MuchBetter** wallet (`muchbetter.com`), behind gambling lures (`hadesbet3.com`, `betonredcasinobe.com`). **How the C2 is recovered (binary-only)** The operator backend is a single hardcoded **HTTPS** base URL compiled into the Dart snapshot `libapp.so`, read directly from that file's string pool. It sits on a throwaway PaaS host (a `*.ondigitalocean.app` subdomain) and is deliberately kept separate from (a) the overlay-target **bank** domains the trojan phishes and (b) the attribution SDKs it ships (AppsFlyer / OneLink); the decoder filters those out so only the real operator backend is recorded. Family label provisional.

Signing certificate

Subject CN

Android

Issuer CN

Android

Valid

2008-02-29 → 2035-07-17

Fingerprint

a40da80a59d170caa950cf15c18c454d47a39b26989d8b640ecd745ba71bf5dc

Other samples signed with this certificate? That's a lead worth checking - but not proof of a shared operator, since signing keys (and the Android debug certificate in particular) are widely reused. See the certificate page for every sample signed with it.