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Plump Spider is a financially motivated cybercrime threat actor associated with Latin America, particularly Brazil. The group has been linked to campaigns that impersonate trusted Brazilian institutions, including government-themed entities, to deliver infostealers and web-based credential theft tooling against victims in Brazil. Reporting places Plump Spider among the major financially motivated operators active in the Latin American threat landscape. Plump Spider has been associated with infrastructure overlaps and recurring tradecraft involving abuse of Brazilian hosting providers, fake government-themed web properties, and malware delivery chains designed to steal credentials, browser cookies, and session data. Observed operations used Delphi- and Electron-based malware components, persistence through Windows autorun mechanisms and login-item settings, HTTPS command-and-control communications that tolerate invalid certificates, and tasking frameworks for remote payload delivery and execution. Related tooling has included browser-focused credential theft, keylogging, user-activity monitoring, and exfiltration of victim data. The actor has also been linked to JavaScript-based web stealers and man-in-the-browser activity targeting Brazilian online services. Observed scripts were capable of stealing cookies, form data, and browser storage contents, dynamically loading additional payloads, and spoofing legitimate portals to capture or relay sensitive information. High-confidence reporting ties these operations to financially motivated objectives rather than espionage or destructive activity.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
2 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
50 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Financial fraud activity targeting the Brazilian public, characterized by abuse of legitimate government domains and spoofed .gov.br-style infrastructure to distribute stealers, hijack sessions, and increase victim trust. The report assesses the current campaign as operationally linked to this group through infrastructure overlap and continuity of TTPs.
Financially motivated criminal activity cluster identified as a major operator in Latin America; described as based in LATAM or primarily focused on targets in the region.
eCrime group cited as leveraging AI-enabled social engineering (notably vishing/impersonation) to steal credentials and bypass controls.
Match sector + geo + tech-stack targeting against your real footprint.
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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.