Family: FluBot

FluBot is an android banking trojan that uses overlays.

FluBot payload

Android SMS interception and OTP exfiltration

Registers a high-priority SMS_RECEIVED receiver, parses inbound message bodies and aborts the broadcast to hide messages from the user, alongside network exfiltration primitives. This is the standard 2FA/OTP theft pattern used to complete fraudulent transactions.

Android banker: accessibility service abuse with overlay injection

DEX references AccessibilityService event hooks together with window-overlay creation and credential-capture primitives. This combination is the canonical Android banking-trojan pattern: the app reads screen content and injects fake login windows over legitimate banking apps.

Contact harvesting with SMS self-propagation

Reads the device contact list and sends messages to the retrieved numbers, the distribution mechanism behind SMS worm campaigns. The victim's own address book becomes the delivery channel, which is why these campaigns spread rapidly within a region.

Notification listener abuse for OTP and message theft

Binds a notification listener service and reads posted notification content, optionally dismissing notifications afterwards to hide them. This harvests one-time passcodes and private messages without ever requesting SMS permissions, which is why it has largely replaced SMS interception in modern ban