MALWARE FAMILY
Immortal Stealer
Internal ID: win.immortal_stealer
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
ZScaler describes Immortal Stealer as a windows malware written in .NET designed to steal sensitive information from an infected machine. The Immortal stealer is sold on the dark web with different build-based subscriptions.
Threat Analysis
Immortal 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.immortal_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.