WhatsApp 'Eternidade' Trojan Self-Propagates Across Brazil
In early 2024, a sophisticated infostealer campaign dubbed 'Eternidade' began targeting Brazilian Portuguese–speaking WhatsApp users. The attackers distributed a trojan combining phishing, credential theft, and worm-like self-propagation via compromised WhatsApp messages. Victims were lured with messages containing malicious links; once infected, devices exposed sensitive banking credentials and personal data to attackers. The malware leveraged localized tactics and social engineering to increase infection rates and circumvent traditional perimeter defenses, leading to widespread compromise across individual users and organizations reliant on WhatsApp for communication. The rapid spread, data loss, and potential for further extortion amplified business and consumer risks. This breach signals the growing sophistication of infostealer operations, especially their ability to exploit trusted communication apps in regionally tailored attacks. The incident raises alarm over encrypted-messaging-based malware and highlights gaps in endpoint and messaging security as threat actors increasingly weaponize social communication platforms.
Kill Chain
