Cn Xiaoice Demo Virtualhuman 2026 05 17
Nicholas Michael Kloster / NuClide Research nicholas@nuclide-research.com
2026-05-17
Re: Unauthenticated Elasticsearch with AI/RAG workload, XiaoIce / 小冰 (cluster name ‘xiaoicedemo’, virtual-human knowledge cluster)
IP / Host: 8.147.113.203 (cluster xiaoicedemo (elasticsearchsolo))
Severity: HIGH
I’m an independent security researcher conducting good-faith AI infrastructure research under the NuClide Research umbrella (CISA disclosures CVE-2025-4364, ICSA-25-140-11). This is an unsolicited coordinated disclosure. No engagement exists with your organization. I have not read, modified, or exfiltrated documents. Only index metadata (schema, counts, sizes) needed to identify the exposure.
Summary
The Elasticsearch endpoint at http://8.147.113.203:9200 is reachable from the public internet with no authentication. The cluster carries one or more AI / RAG workloads (dense_vector or knn_vector fields). no operator-specific TLS certificate; cluster name ‘xiaoicedemo’ uniquely identifies the deployment.
State (verified 2026-05-17): MID-WIPE: extortion marker planted, virtual-human knowledge still alive
Infrastructure
| Field | Value |
|---|---|
| IP | 8.147.113.203 |
| ES version | Elasticsearch 8.17.0 |
| Cluster name | xiaoicedemo (elasticsearchsolo) |
| Country | China |
| Hosting | Alibaba Cloud (Aliyun) |
Alive on the cluster
| Index | Docs | Size | Notes |
|---|---|---|---|
prod_virtualhuman_knowledge_faq_default_org | 2 | 82.7 KB | 512d — virtual-human FAQ knowledge base |
prod_virtualhuman_knowledge_item_default_org | 2 | 30.7 KB | 512d — virtual-human knowledge items |
Extortion marker
An index named read_me is present on the cluster. This is the calling card of the Meow / Indexrm extortion campaign, an automated wipe-and-ransom operation. The marker indicates the attacker has already enumerated your cluster and either has wiped the data or is about to.
Sample marker content typically contains a ransom note pointing to a Bitcoin wallet and an email channel (wendy.etabw@gmx.com or one of two clone actor channels, scandal@onionmail.org, db-recovery@sharebot.net). We have separately reported all three channels to abuse contacts.
Do not pay. Our wallet-blockchain analysis (mempool.space) shows only ~5 victims across thousands of marked hosts have paid; the wallet has received roughly 0.018 BTC against a population of 4,400+ marked instances. Paying does not get your data back. The campaign is wipe-first, ransom-as-afterthought.
Why it matters
The cluster name ‘xiaoicedemo’ and the ‘prod_virtualhuman_knowledge_*’ index naming indicate this is XiaoIce / 小冰 production virtual-human knowledge data, not a demo. The data is still alive. Take it offline before the attacker completes the wipe.
One-line fix
Bind the Elasticsearch HTTP listener to the loopback interface and require authentication for any non-local client. For a Docker deployment:
docker run -p 127.0.0.1:9200:9200 -e xpack.security.enabled=true elasticsearch:8.17.0If the cluster is on a host network: set network.host: 127.0.0.1 in elasticsearch.yml, restart, then put it behind a reverse proxy or VPN with authentication.
For OpenSearch clusters: enable the security plugin with plugins.security.disabled: false.
Reference
Companion case study with the full 22-host survey: AI-LLM-Infrastructure-OSINT/blob/main/case-studies/commercial/22-ai-stack-attribution-2026-05-17.md
Companion methodology notes:
- Snapshot vs delta measurement (Insight #29)
- WHOIS over slug heuristics for disclosure routing (Insight #04)
Happy to provide additional forensic detail if useful. No response is required.
Regards, Nicholas Michael Kloster / NuClide Research nicholas@nuclide-research.com