Chihuahua Stealer and the New Cybercrime Frontier: Inside the Silent War for Your Data

The Chihuahua Stealer is a newly discovered .NET-based infostealer that blends common malware techniques with unusually advanced features. It first came to attention through a Reddit post on April 9, where a user shared an obfuscated PowerShell script they were tricked into executing via a Google Drive document. The script uses multi-stage payloads, achieving persistence through scheduled tasks and leading to the execution of the primary stealer payload. This malware targets browser data and crypto wallet extensions, compresses stolen data into an archive with the file extension “.chihuahua,” encrypts it using AES-GCM via Windows CNG APIs, and exfiltrates it over HTTPS, wiping all local traces to demonstrate its stealth techniques. Infostealer malware is one of the most underrated corporate and consumer information security threats today. These sophisticated remote access Trojans (RATs) silently infect computers and systematically exfiltrate massive amounts of sensitive informa...
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