# PhishDestroy threat dossier — coinbig.us
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Fetched:   2026-07-29 02:45:17 UTC
Canonical: https://phishdestroy.io/domain/coinbig.us/

## VERDICT
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TAKEN DOWN (neutralised)
Composite threat score: 89/100 (PhishDestroy scoring — see methodology below)
Scam classification: Crypto Scam
Targeted brand: Ethereum (and: mastercard, solana, sui, tron, visa)

## DETECTION EVIDENCE
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VirusTotal:      1/93 security vendors flagged this domain
  Flagging vendors: Gridinsoft
Public blocklists: listed on 1 independent blocklist

## INFRASTRUCTURE
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IP address:      104.21.49.3 (US, San Francisco)
ASN:             ASAS13335 CLOUDFLARENET, US
Hosting org:     AS13335 Cloudflare, Inc.
Registered:      2026-02-21
Page title:      Buy/Sell Bitcoin, Ether and Altcoins | Cryptocurrency Exchange | Coinbig

## TLS CERTIFICATE
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Issuer:     WE1
Status:     INVALID chain

## ABUSE-REPORT HISTORY (evidence of registrar non-response)
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Status: CLOSED — no report required.
This domain was neutralised before the abuse-report cycle could be dispatched — either
the hosting provider / registrar suspended it on their own, the DNS went dead, or the
operator abandoned the infrastructure. PhishDestroy keeps the evidence bundle on file
for audit but no formal notice was sent.

## TIMELINE
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Domain registered: 2026-02-21 (per WHOIS / CT — may reflect a renewal or transfer date, not first-ever registration)
First detected:    2026-02-26 23:23:29 UTC (by PhishDestroy tracker)
First reported:    2026-02-26 23:23:29 UTC (abuse notice filed)
Last verified:     2026-07-29 04:21:55 UTC
Neutralised:       2026-04-21 22:05:28 UTC
Current status:    taken down (registrar suspended or DNS dead)

## EXTERNAL CORROBORATION (third-party evidence)
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URLScan.io:       https://urlscan.io/result/019a4aeb-33bf-70e4-8260-a9de69c78202/
Wayback Machine:  https://web.archive.org/web/*/coinbig.us
crt.sh CT logs:   https://crt.sh/?q=%25.coinbig.us
Google transparency: https://transparencyreport.google.com/safe-browsing/search?url=coinbig.us
AlienVault OTX:   https://otx.alienvault.com/indicator/domain/coinbig.us
URLhaus:          https://urlhaus.abuse.ch/host/coinbig.us/

## ANALYST NARRATIVE
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[Generated: 2026-07-07 20:10:14 UTC — narrative may predate facts above. Treat fields in TIMELINE / DETECTION EVIDENCE / INFRASTRUCTURE as authoritative if they differ from the prose below.]

coinbig.us Phishing Intelligence Report - PhishDestroy

The domain coinbig.us is a confirmed phishing site engaged in brand impersonation targeting Ethereum users. It presents itself as a cryptocurrency exchange under the name 'Coinbig' with the page title 'Buy/Sell Bitcoin, Ether and Altcoins | Cryptocurrency Exchange | Coinbig', but operates as a scam to deceive victims into disclosing login credentials or transferring funds. No cryptocurrency drainer kit was identified. The site is currently taken offline.

Technical indicators show limited detection: 1 of 95 VirusTotal security vendors flagged coinbig.us, while Google Safe Browsing has not marked it as unsafe. The domain appears on 1 security blocklist (PhishDestroy) and was created on February 21, 2026. It resolves to the IP address 104.21.49.3, hosted on Cloudflare's network (AS13335) in the US. The SSL certificate is issued by WE1, and Gridinsoft assigned a trust score of 0/100. Registrar information is not available.

Users who interacted with coinbig.us should immediately change any passwords used on the site, enable two-factor authentication on legitimate cryptocurrency platforms, and monitor accounts for unauthorized transactions. If funds were transferred, report the incident to local law enforcement and the impersonated brand (Ethereum). Victims can also submit the domain to anti-phishing initiatives such as PhishTank or the Anti-Phishing Working Group to prevent further abuse.

[Updates since narrative was generated:]
  - VirusTotal detections: now 1/93 (narrative was written when count was lower)

## SCORING METHODOLOGY
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Composite score is NOT derived from VirusTotal alone. PhishDestroy aggregates:
  - VirusTotal positive ratio
  - Public blocklist consensus (MetaMask, ScamSniffer, OpenPhish, PhishTank, URLhaus,
    CryptoFirewall, SEAL, Polkadot, Enkrypt, Phishunt, DiscordPhishing, PhishingDB)
  - Cloaking detection (HTTP 666 or rendering delta between bot and real visitor)
  - DNS-filter consensus (Quad9, CleanBrowsing, NextDNS, AdGuard, Cloudflare, etc.)
  - AlienVault OTX pulses + Cloudflare Radar + Google Safe Browsing
  - URLScan / URLQuery verdicts
  - Brand-impersonation heuristics (DOM analysis of forms, logos, wording)
  - Known phishing-kit fingerprinting (favicon hash, JS obfuscation signatures)
  - Wallet-drainer family classification (Angel, MS, Rainbow, Pink, Inferno, ...)
  - Free-TLS vs paid-cert ratio (throwaway infrastructure signal)
  - Registrar/hosting abuse history (this registrar's track record)
  - Human researcher sign-off (operator takedown team)

A domain present in our database is ALREADY flagged. A low VT count by itself does
NOT mean the domain is safe — new scam domains routinely show 0/95 VT for their
first 7–30 days while actively draining wallets. Always cross-reference the composite
score and the individual indicators above, not just VT.

## CORRECTIONS / APPEALS
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Full HTML report:  https://phishdestroy.io/domain/coinbig.us/
JSON API:          https://api.destroy.tools/v1/check?domain=coinbig.us
Appeal a flag:     https://phishdestroy.io/appeals/  (responded to within 48 hours, FP rate <0.01%)
Submit a report:   https://t.me/PhishDestroy_bot

About PhishDestroy: independent open-source threat-intelligence platform.
Tracked: 208,204 domains (82,853 alive under monitoring, 124,320 confirmed takedowns/dead). Site: https://phishdestroy.io