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Water Curupira is a cybercriminal intrusion cluster associated with distributing the Pikabot malware through phishing-based delivery. Reported activity includes sending emails with password-protected ZIP archives that deliver Pikabot installers, indicating a focus on attachment-based initial access and malware staging while attempting to reduce detection by email security controls. The observed tradecraft supports characterization as an access-and-delivery operation centered on malicious email attachments and user execution. High-confidence reporting in the available data supports phishing attachment delivery of Pikabot, but does not establish broader victimology, geographic attribution, ransomware involvement, or a more complete capability set beyond initial access and malware delivery.
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1 distinct technique observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Used password-protected ZIP archives in email delivery chains to distribute Pikabot installers.
Uses password-protected ZIP attachments to deliver Pikabot installers.
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Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
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