Key data
This article explores Netcraft’s research into the HookBot malware family and associated attacks on Android devices, including examples of:
- Typical HookBot behaviors, such as the use of overlay attacks
- The types of brands and apps being impersonated
- How HookBot utilizes Command and Control (C2) servers to continuously evolve
- A builder tool that enables threat actors to develop and deploy their own HookBot apps
- Distribution via Telegram, which highlight the lucrative pricing models available for buyers, as well as competition between developers/distributors
Netcraft’s Android Malware Analysis engine was developed to build a deeper, applied understanding of the malware strains being used by threat actors to abuse brands and exploit their customers. The sandbox uses handwritten rules to detect malware families and extract specific configurations (e.g., which servers they utilize), helping us understand criminal architecture and its potential impact on organizations.
Using the analysis engine, our team has investigated instances of the notorious HookBot malware family targeting Android devices specifically. First identified in 2023, we’ll dig deeper to understand what makes this threat so effective, including the functionality underpinning HookBot-infected apps and the tactics being used by those developing and distributing them.
Hookbot Background
HookBot is a family of banking Trojans whose primary function is to steal sensitive data from victims, such as banking credentials, passwords, and other personally identifiable information (PII). Now linked to a number of cybercrime campaigns, it’s part of a malware ecosystem responsible for financial fraud globally. HookBot targets mobile devices, particularly Android. Not only does this provide the malware with optimal reach, from a security perspective, its mobil
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