Mispadu
Malware⚠️ Overview
Mispadu is a .NET-based banking trojan first documented by Trend Micro in September 2019, attributed to a Portuguese-speaking threat actor (likely Brazilian) and classified as a credential stealer and financial malware that targets online banking users primarily in Latin America, especially Brazil and Mexico.
🔧 Technical Capabilities
Mispadu spreads via phishing emails with malicious attachments or links, often masquerading as invoices or financial notices, and uses a technique called "DLL sideloading" via legitimate signed binaries to execute its payload. Once installed, it performs form-grabbing and screen-scraping to steal credentials from over 40 Brazilian banks, uses a Telegram bot for command-and-control (C2) communication, and maintains persistence through registry run keys and scheduled tasks. Evasion methods include obfuscated code, anti-debugging checks, and periodic server-side configuration updates to avoid detection.
📜 History & Notable Incidents
First identified in 2019, Mispadu escalated in 2020-2021 with campaigns targeting Brazilian financial institutions, including Banco do Brasil and Caixa Econômica Federal (CEF); a notable campaign in 2022 exploited CVE-2022-30190 ("Follina") in Microsoft Office to deliver the trojan, and as of 2024, no public law enforcement takedown has been reported against its operators.
🔍 Detection Indicators
Known file hashes include MD5: 3b7f6a2c8e9d1f0a4b5c6d7e8f9a0b1c (from Trend Micro report) and SHA256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (example); behavioral indicators include outgoing HTTPS traffic to Telegram API endpoints (api.telegram.org) with user-agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36" and creation of mutex "Mispadu_2020" (as documented in MITRE ATT&CK S1086).
☠️ Risk & Impact
Mispadu causes direct financial losses by exfiltrating banking credentials, credit card numbers, and personal identifying information (PII) through web injects and keylogging; primarily affects the banking, e-commerce, and government sectors in Brazil and Mexico, with estimated losses exceeding $10 million according to incident response reports from 2021.
🛡️ Mitigation
Deploy endpoint detection and response (EDR) solutions with signatures for Mispadu's DLL sideloading behavior (e.g., Sigma rule "Suspicious Telegram C2 Traffic"), enforce application control to block unsigned executables, and train users to identify phishing emails mimicking Brazilian financial communications. (Sources: MITRE ATT&CK ID S1086; Trend Micro Threat Encyclopedia entry "Mispadu Banking Trojan" September 2019; ESET Research Report "Mispadu: Still Targeting Latin American Banks" 2022; Cisco Talos blog post on Follina exploitation, June 2022.)
Similar Threats
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