APT / THREAT GROUP
SantaStealer
2
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 known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.
External References
Quick Facts
TypeAPT / Threat Group
Aliases2
Also Known As
SantaStealerwin.santa_stealer
External Intelligence
Malpedia: win.santa_stealerResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.