Astaroth Banking Malware Emerges in Brazil Through Targeted Spear-Phishing Campaign
On October 16, 2024, Cyber Attack / Banking Trojan
A new spear-phishing initiative in Brazil has been discovered, spreading the banking malware Astaroth (also known as Guildma) through obfuscated JavaScript to evade security measures. According to Trend Micro’s recent analysis, this campaign has particularly affected various sectors, including manufacturing, retail, and government agencies. Malicious emails often disguise themselves as official tax documents, exploiting the urgency of personal income tax submissions to lure victims into downloading the malware. Trend Micro is monitoring this cluster of threat activity under the name Water Makara. Additionally, Google’s Threat Analysis Group (TAG) has identified a similar campaign, dubbed PINEAPPLE, that also targets Brazilian users with the same malware. Both operations begin with phishing messages masquerading as communications from official entities.