APT / THREAT GROUP
EntryShell
2
aliases
Last seen:Mar 17, 2026
Intelligence Profile
Fileless malware 'EntryShell', a variant of the KeyBoy malware, due to similarities in backdoor command IDs and debug messages with old KeyBoy samples. The embedded malware config was encrypted with a unique algorithm.
Threat Analysis
EntryShell 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
win.entryshellEntryShell
External Intelligence
Malpedia: win.entryshellResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.