trojanized Archives

BetaBeacon

May 6, 2026

A rigged game: ScarCruft compromises gaming platform in a supply-chain attack

- ScarCruft, also known as APT37 or Reaper, is a North Korean espionage group targeting government, military organizations, and companies in Asia. - BirdCall is a Windows backdoor attributed to ScarCruft, with spying capabilities such as taking screenshots and logging keystrokes. - The Android version of BirdCall collects contacts, SMS messages, call logs, and media files, and was actively developed over several months. - The BirdCall backdoor was discovered in a trojanized card game on a gaming platform tailored for ethnic Koreans living in Yanbian, China. - The attack was likely aimed at collecting information on individuals from the Yanbian region deemed of interest to the North Korean regime, such as refugees or defectors.

BetaBeacon

May 5, 2026

ScarCruft Hacks Gaming Platform to Deploy BirdCall Malware on Android and Windows

ScarCruft compromised a video game platform in a supply chain attack, trojanizing its components with a backdoor called BirdCall to target ethnic Koreans residing in China. The attack enabled the threat actors to target both Windows and Android devices, turning it into a multi-platform threat. The campaign targeted sqgame[.]net, a gaming platform used by ethnic Koreans in China, known as a transit point for North Korean defectors. BirdCall has features like screenshot capture, keystroke logging, and data gathering, and relies on legitimate cloud services for command-and-control. The Android variant collects various data and has seen active development.

AppWizard

April 21, 2026

Trojanized Android App Fuels New Wave of NFC Fraud

A new variant of the NGate malware family has emerged, using a trojanized Android application to capture payment card data and personal identification numbers (PINs). This modified version of HandyPay, a legitimate NFC relay app, has been distributed since November 2025, primarily targeting users in Brazil. The malware intercepts NFC payment card data and allows fraudulent transactions. Two distinct malware samples have been observed, delivered through phishing infrastructure that impersonates a Brazilian lottery site and a Google Play listing for a card protection tool. The trojanized app captures NFC data, requests the victim's card PIN, and transmits this information to attacker-controlled infrastructure. It requires minimal permissions, leveraging its role as the default payment application to evade detection. Evidence suggests that generative AI tools may have been used in its development, indicated by emoji markers in debug logs. ESET has reported its findings to Google, and Google Play Protect can detect known versions of the malware. The developer of HandyPay is investigating the misuse of its application.