base.app-open.click is an impersonation phishing page. Its hostname begins with "base" followed by "app-open", which makes it look like a link that launches a legitimate crypto app. Its blocklisting by MetaMask and SEAL points to crypto wallet users as the intended targets. PhishDestroy first saw it on 2026-09-11, and it went offline the next day, 2026-09-12. When last checked on 2026-10-19, the site was dead and its DNS was inactive.
How the scam works
Visitors landed on a page titled "Human Verification - Captcha" instead of the service the hostname suggested. The captcha title does not itself show a brand, but we classified the site as impersonation phishing. Fake verification screens like this are often used as a gate: they make the visit feel routine and push the victim toward the next step. That next step is usually a lookalike interface that asks for a wallet connection, a transaction signature or a recovery phrase. Any of these can hand control of the victim's funds to the operator.
Evidence
On 2026-09-16, VirusTotal showed 5 of 89 engines flagging the domain: alphaMountain.ai, CRDF, Fortinet, Gridinsoft and SOCRadar. That is a low count, so many security tools would not have warned visitors. The stronger signal comes from crypto-specific defenses, since MetaMask and SEAL list it alongside PhishDestroy. Spamhaus also places the domain in its DBL botnet category, which ties it to malicious infrastructure beyond a simple misleading page.
Infrastructure
The domain was registered through Global Domain Group LLC on 2026-02-26, about six and a half months before we detected it. That long gap suggests it was held in reserve before being put to use. It sat behind Cloudflare, Inc. on an address located in Canada, which hides the true origin server. Its certificate came from Let's Encrypt, so the padlock in the browser said nothing about whether the site was trustworthy.
What to do
If you connected a wallet on this site, review and revoke any token approvals it may have obtained. Then move your assets to a fresh wallet if you signed anything you did not understand. If you typed in a seed phrase, treat that wallet as compromised and empty it into a new one immediately. If the verification step asked you to paste or run anything on your computer, scan the device and change passwords from a clean machine. Defenders should block the domain and the wider app-open.click name, and check logs for visits around 2026-09-11 to 2026-09-12.
For the registrable domain app-open.click behind this subdomain, the registrar above operates under an ICANN accreditation agreement. The links below provide the official fee schedule and current DNS abuse compliance guidance.
Accreditation is a contract, not a safety certification.
RAA §3.18 establishes abuse-contact and handling requirements. This report can document stored outbound notices and later technical observations; it does not by itself establish receipt, investigation, remediation, or contractual non-compliance.
Certificate fingerprintfdeef6ae367c5dd30b6a496896c2e3fca7e0de0e7764585b6c31ad8382ab14e1Certificate names · 1 SANs
app-open.click
Saved certificate metadata. Certificate dates without a timezone are shown as stored. Transport encryption does not establish that the site is trustworthy.
Primary outcomeDNS 非活动reason: DNS NXDOMAIN80% confidence
Attributionsource: Dns Cache
Evidence layersAvailability: DNS inactiveContent: UnreachableDNS: NXDOMAINRegistration: Unknown
Latest HTTP observation未知Probe Inconclusive20%2026-10-19 01:14:09 UTC
RDAP registration未知
Observed timelinelast reachable: 2026-09-15 22:17:50 UTCcurrent episode first observed: 2026-09-30 16:14:55 UTCobserved RIP window: 2026-09-15 22:17:50 UTC → 2026-09-30 16:14:55 UTC · 353.95hmidpoint estimate ≈ 2026-09-23 07:16:22 UTC · precision low · basis bounded
Availability, content, DNS and registration are independent evidence layers. NXDOMAIN, an unreachable origin or missing content alone does not prove registrar action. A registrar or provider is credited only when a direct technical marker identifies that actor. Report causality is shown separately.
技术 · 3 identified
Cloudflare Browser Insights
AnalyticsRUM
Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Template-based draft · optional AI wording assistance requires separate consent
AI辅助草稿——事件详细信息由AI提供商处理 · 自行审核并提交
After a phishing incident
针对受害者的建议与指导
Choose the steps that match what you shared. Keep a copy of this report alongside your own records.
我应该立即采取什么措施？
紧急
Stop using the suspicious site. Open the real service through its official app or an address you already trust.
更改所有密码 — 电子邮件、Exchange 账户，以及任何使用同一密码的账户
启用双因素认证 使用身份验证器应用（而非短信）。禁用基于短信的恢复功能
冻结卡片 如果您在钓鱼网站上输入了银行信息
我应该为报告收集哪些信息？
联邦调查局（FBI）指南
Keep original emails, receipts, messages and screenshots in a secure place. A factual timeline helps the receiving authority understand what happened. IC3 evidence guidance ↗
Payment records — if you paid, save the receipt, amount, date, payment provider and recipient details.
Your bank or payment provider — contact its fraud team promptly through official contact details if money or card information was exposed.
当地警方 — 即使无法立即采取行动，也能留下正式记录
A report is not a guarantee of recovery or investigation, but prompt, accurate transaction data can help authorities and service providers trace the incident.
How do phishing scams typically work?
虚假网站 — 与正规网站完全一致的克隆网站，仅域名略有改动
猪的屠宰 — 通过Telegram/WhatsApp/交友软件花数周时间建立信任，随后钱被骗走
退款诈骗 — fraudsters pose as recovery agents and demand upfront fees. Never share a seed phrase or pay before independently verifying the provider
About this reportSources, observation dates and corrections
This report combines saved page captures, registration and network records, scanner results and PhishDestroy reporting history. Each source keeps its own observation date. Open a source report to inspect the original result.
The AI-assisted analysis was written on . It describes the evidence available at that time; later source checks can change.
A capture documents what was shown. A scanner result records that provider’s assessment at the time of its check. Neither a valid certificate nor a zero-detection result is a guarantee of safety.
