Casbaneiro and Horabot Phishing Campaign Hits Latin America and Europe
A Brazilian cybercrime group tracked as Augmented Marauder and Water Saci is targeting Spanish-speaking users at organizations across Latin America and Europe with a multi-stage phishing campaign that delivers the Casbaneiro banking trojan and uses Horabot for delivery and propagation. The operation begins with court summons-themed phishing emails carrying password-protected PDF lures that direct victims to malicious links and ZIP archives, leading to execution of HTA and VBS payloads, followed by AutoIt loaders and encrypted malware components.
Researchers said the malware chain includes anti-analysis checks, retrieval of additional payloads from remote servers, and dynamically generated judicial-themed PDF attachments created through a remote PHP API using random PINs. Horabot helps expand the campaign by harvesting Outlook contacts, abusing compromised email accounts, and sending new phishing messages, while the broader operation also incorporates ClickFix social engineering and WhatsApp-based distribution to evade defenses and widen infections.
Timeline
Apr 1, 2026
Researchers detail Horabot's role in propagation and dynamic PDF lures
Analysis of the campaign revealed that Horabot was being used both to deliver malware and to propagate the operation by harvesting Outlook contacts, abusing compromised email accounts, and sending phishing emails with dynamically generated judicial-themed PDF attachments. Researchers also found the malware performed anti-analysis checks, retrieved additional payloads from remote servers, and incorporated ClickFix and WhatsApp-based social engineering to expand infections.
Apr 1, 2026
Augmented Marauder launches Casbaneiro phishing campaign
A Brazilian cybercrime group tracked as Augmented Marauder, also known as Water Saci, began targeting Spanish-speaking users at organizations across Latin America and Europe with phishing emails delivering the Casbaneiro banking trojan. The campaign used court summons-themed lures, password-protected PDFs, malicious links, ZIP archives, and HTA/VBS payloads in a multi-stage infection chain.
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