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Threat Actor

Bizarro

bizarro · brazil · active since 2020-10

Bizarro is a Brazilian-origin banking trojan family operationally active from approximately late 2020 onwards with Kaspersky canonical first-disclosure July 16, 2021; operationally distinctive within the Brazilian-origin banking malware ecosystem for sustained European banking targeting expansion (Argentina, Chile, Spain, Portugal, France, Italy, Turkey during 2020-2022 peak period), unlike predecessor clusters like Banbra (banbra.yaml) and the Tetrade-cluster families that focused on Brazilian- customer-only targeting.

signature MSI installer dropper distribution tradecraft (operationally distinctive in Brazilian-origin banking malware ecosystem where ZIP- archive distribution is more common), cloud storage service abuse for command-and-control infrastructure (Microsoft Azure, AWS, GCP as C2 payload retrieval hosts), banking website overlay attacks, screen capture, clipboard hijacking for transaction redirection, and aggressive anti-analysis tradecraft including sandbox and VM evasion.

operationally coordinated with European money-laundering infrastructure to monetize European banking fraud proceeds.

curated alongside broader LATAM banking trojan ecosystem in this corpus (Banbra, Casbaneiro, Grandoreiro, Guildma/Astaroth, Javali, Melcoz, Mekotio, Amavaldo).

brazil confidence: high 8 aliases
Sigma rules200 YARA rules0 Live IOCs0 CVEs exploited0

Profile

Bizarro is a Brazilian-origin banking trojan family and the operator cluster operationally responsible for its development, distribution, and operational deployment from approximately late 2020 onwards. The cluster is operationally distinctive within the broader Brazilian-origin banking malware ecosystem in two dimensions: (1) EUROPEAN BANKING TARGETING EXPANSION. Unlike the operationally Brazilian-customer-focused predecessor clusters (Banbra, curated at banbra.yaml.

the Tetrade-cluster Brazilian-banking-only families including Guildma/Astaroth, Javali, Melcoz, Grandoreiro, all curated separately in this corpus), Bizarro operations expanded geographically beyond Brazilian banking customer targeting to include sustained operations against European banking customers in Argentina, Chile, Spain, Portugal, France, Italy, and Turkey during the cluster's 2020-2022 peak operational period. The operational expansion required Spanish, Portuguese, French, and Italian language localization of malicious spam email content and banking-overlay attack templates, and operational coordination with money-laundering infrastructure capable of converting European banking fraud proceeds into operator-accessible funds. (2) MSI INSTALLER DROPPER DISTRIBUTION TRADECRAFT. Bizarro operators have made MSI installer dropper distribution a signature operational tradecraft element, distributing malicious MSI installer packages via spam email and drive-by compromise, with the MSI installers containing full trojan installation packages. The MSI installer distribution tradecraft is operationally distinctive in the Brazilian- origin banking malware ecosystem (where ZIP-archive- containing-executable distribution is more common) and provides operational advantages including legitimate- installer-icon presentation in operating-system installer UIs, relatively trusted file extension presentation, and execution paths that may evade some endpoint-detection rules focused on direct EXE execution patterns. Additional signature operational tradecraft elements include cloud storage service abuse for command-and-control infrastructure (Microsoft Azure, AWS, GCP, Box as C2 payload retrieval hosts), banking website overlay attacks designed to intercept banking authentication credentials, screen capture and clipboard hijacking for banking transaction redirection, and aggressive anti-analysis tradecraft including sandbox detection and virtualization evasion. The cluster's operational tradecraft has subsequently influenced adjacent Brazilian-origin banking malware operations, the MSI installer distribution pattern and cloud-storage-C2 tradecraft have been observed in subsequent operations across the broader Brazilian-origin banking malware ecosystem, suggesting either operator-network tradecraft sharing or convergent operational evolution across the ecosystem. Bizarro is curated alongside the broader LATAM banking trojan ecosystem coverage in this corpus including Banbra (banbra.yaml, foundational Brazilian banking trojan, predecessor operational pattern), Casbaneiro (casbaneiro.yaml), Grandoreiro (grandoreiro.yaml), Guildma / Astaroth (guildma_astaroth.yaml), Javali (javali.yaml), Melcoz (melcoz.yaml), Mekotio (mekotio.yaml), and Amavaldo (amavaldo.yaml). Its operational distinctiveness within this ecosystem is the sustained European banking targeting expansion and the MSI installer dropper distribution tradecraft.

Aliases

8
bizarrobizarro banking trojanbizarro operatorsbizarro clusterbizarro brazilian banking trojanbizarro_brazilian_banking_clusterbizzarrobizarro raas

Notable Campaigns

4
2021Kaspersky Canonical Public Disclosure, Bizarro Banking Trojan (July 2021)
2020-2024MSI Installer Dropper Distribution, Operational Signature
2020-2024Cloud Storage Service Abuse for Command and Control Infrastructure
2020-2022Bizarro European Banking Targeting Expansion (2020-2022)

Attribution & Reporting

Attributed by
KasperskyESETTrend MicroSpanish CCN-CERT (Centro Criptologico Nacional)Portuguese CNCS (Centro Nacional de Cibersegurança)French ANSSIItalian CSIRT ItaliaBrazilian Federal Police (Policia Federal)Symantec / Broadcom Threat Hunter TeamSophosMicrosoft Threat IntelligenceArgentine CERT (CERT.ar)
Key reporting
reportKaspersky Securelist: Bizarro, A New Banking Trojan Targets Brazilian Customers and Expands to Europe (July 16, 2021), canonical first-disclosure
reportESET WeLiveSecurity: Bizarro Banking Trojan European Targeting Analysis
reportTrend Micro: Bizarro Banking Trojan Technical Analysis
reportSpanish CCN-CERT: Bizarro Banking Trojan Alert (2021-2022)
reportPortuguese CNCS: Bizarro Banking Trojan National Advisory
reportFrench ANSSI: Bizarro Banking Trojan Threat Intelligence Note
reportItalian CSIRT Italia: Bizarro Banking Trojan Italian Banking Sector Advisory
reportMalpedia Malware Profile: Bizarro

Operational

State sponsor

Cybercriminal cluster of Brazilian-origin operators responsible for developing, distributing, and operating the Bizarro banking trojan family, a Brazilian-origin banking malware operation that emerged in approximately late 2020 and was canonically disclosed by Kaspersky in July 2021. The cluster is operationally distinctive within the broader Brazilian-origin banking malware ecosystem in that, unlike the operationally Brazilian-customer-focused predecessor clusters (Banbra, curated at banbra.yaml.

the Tetrade-cluster Brazilian-banking-only families), Bizarro operations expanded geographically beyond Brazilian banking customer targeting to include sustained operations against European banking customers in Argentina, Spain, Portugal, France, Italy, and additional European countries during the cluster's 2020-2022 peak operational period. The geographically-expanded targeting profile operationally distinguishes Bizarro from the broader Brazilian-origin banking malware ecosystem and represents one of the most operationally-significant European-targeting Brazilian- origin banking trojan families documented in the public record. Industry analysis (Kaspersky canonical disclosure, ESET, Spanish CCN-CERT, Portuguese CNCS, French ANSSI) has assessed the cluster as Brazilian-origin based on operational tradecraft characteristics, Brazilian Portuguese language strings in malware samples, infrastructure analysis, and operational tradecraft continuity with the broader Brazilian-origin banking malware ecosystem including operational coordination with money-laundering infrastructure based in Brazil. The cluster operators have not been individually indicted or publicly named. The cluster operates as a financially-motivated cybercriminal operation with no known state sponsorship.

Motivations
financial_gain, banking_credential_theft, banking_fraud_operations, latin_american_banking_targeting, european_banking_expansion, brazilian_origin_geographic_expansion
Sectors
Regions

Detection Blind Spots

60 techniques
Across this actor’s 60 mapped techniques, the share covered by each detection layer. Low bars are where you’d be blind if this actor targeted you.
Behavioral / log (Sigma)56/60 · 93%
Analytics (MITRE CAR)29/60 · 48%
Runtime / container (Falco)8/60 · 13%
File / malware (YARA)1/60 · 1%
Network (Suricata/Snort)14/60 · 23%
Vuln scan (Nuclei)0/60 · 0%

Atomic Test Plan

30 techniques
Runnable Atomic Red Team tests covering this actor’s mapped techniques - validate your detections against this specific adversary. Cross-reference the blind spots above. For authorized lab / purple-team use. Open the full builder
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
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