MALWARE FAMILY
SantaStealer
Internal ID: win.santa_stealer
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to Rapid7, this malware collects and exfiltrates sensitive documents, credentials, wallets, and data from a broad range of applications, and aims to operate entirely in-memory to avoid file-based detection. Stolen data is then compressed, split into 10 MB chunks, and sent to a C2 server over unencrypted HTTP.
Threat Analysis
SantaStealer 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.santa_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.