HOMETHREATSCMS8000 Backdoor
APT / THREAT GROUP

CMS8000 Backdoor

2
aliases
Last seen:Mar 17, 2026

Intelligence Profile

According to CISA, this is an implant found in firmware for the Contec CMS8000, a patient monitor used by the Healthcare and Public Health sector. An embedded backdoor function with a hard-coded IP address and functionality that enables patient data spillage was identified.

Threat Analysis

CMS8000 Backdoor is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

External References

→https://claroty.com/team82/research/are-contec-cms8000-patient-monitors-infected-with-a-chinese-backdoor-the-reality-is-more-complicated
→https://www.cisa.gov/sites/default/files/2025-01/fact-sheet-contec-cms8000-contains-a-backdoor-508c.pdf

Quick Facts

TypeAPT / Threat Group
Aliases2

Also Known As

elf.cms8000_backdoorCMS8000 Backdoor

External Intelligence

Malpedia: elf.cms8000_backdoor

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.
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CMS8000 Backdoor — APT / Threat Group | Threat Intelligence | CTIWATCH.COM