MALWARE FAMILY
Mystic Stealer
Internal ID: win.mystic_stealer
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to ZScaler, a new information stealer that was first advertised in April 2023, capable of stealing credentials from nearly 40 web browsers and more than 70 browser extensions, also targeting cryptocurrency wallets, Steam, and Telegram. The code is heavily obfuscated making use of polymorphic string obfuscation, hash-based import resolution, and runtime calculation of constants.
Mystic implements a custom binary protocol that is encrypted with RC4.
Threat Analysis
Mystic Stealer is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.
External References
Quick Facts
TypeMalware Family
Aliases1
Also Known As
win.mystic_stealer
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.