Warden Stealer: The Rapid Rise of an Infostealer with an Appetite for AI Agent Data
Warden Stealer is an emerging Rust-based infostealer-as-a-service that has rapidly become one of the most prevalent threats, distributed via malware-as-a-service model since August 2026. Unlike most competitors, it includes a dedicated loader and built-in cryptocurrency clipper. The malware targets over 200 cryptocurrency wallet extensions, 360+ applications across 13 categories, and is notably one of the first infostealers specifically collecting AI assistant and agentic coding tool data, including tokens, credentials, and prompt histories from Claude, Codex, Grok, and Cursor. Operating through tiered subscriptions ranging from $149 for three days to $1,500 monthly, Warden Stealer employs sophisticated obfuscation techniques, morphing capabilities, and bypasses Application-Bound Encryption to steal browser data. The malware avoids CIS and Baltic countries and is distributed through cracked software, game cheats, malvertising, and ClickFix campaigns.
Pulse ID: 6ac89a6e10be1d80cdf57417
Pulse Link: https://otx.alienvault.com/pulse/6ac89a6e10be1d80cdf57417
Pulse Author: AlienVault
Created: 2026-10-09 07:40:30
Be advised, this data is unverified and should be considered preliminary. Always do further verification.
#InfoStealer #Clickfix #Malvertising #MalwareAsAService #OTX #AlienVault