Threat research

A fake CAPTCHA hands a command to the Windows clipboard

On kishvekush[.]com, Radar observed a fake robot check change into Windows PowerShell paste instructions while the page attempted a command-like clipboard write. The write was intercepted; no command was run.

On kishvekush[.]com, Radar observed a fake robot check change into Windows PowerShell paste instructions while the page attempted a command-like clipboard write. The write was intercepted; no command was run.

Daily critical finding · observed

Play walkthroughPause / collapse walkthrough
01A counterfeit robot check appears

The retained baseline shows a reCAPTCHA-style checkbox over a dimmed page. Its appearance alone is not the decisive evidence.

02Concealed code loads a verification stage

Radar records hidden loader code and public RPC traffic while keeping the returned stage away from normal page execution.

03A command-like clipboard write is intercepted

The runtime event and final frame show a copied verification code followed by Win+X, PowerShell, Ctrl+V and Enter instructions.

04Observation stops before execution

Radar retains the evidence but never pastes or runs the command. Payload behavior and endpoint impact remain unverified.

Illustrated evidence sequence — not a recording of the website. No commands are run. Reduced-motion mode shows static steps.

What Radar observed

The original isolated browser session retained three readable frames: a counterfeit reCAPTCHA-style checkbox, a runtime clipboard event, and Win+X, Windows PowerShell, Ctrl+V and Enter instructions. Concealed page code also contacted public blockchain RPC services and constructed a full-screen external iframe loader.

Why it matters

The decisive evidence is the same-session handoff from browser verification to an operating-system command interface, together with an intercepted command-like clipboard write. That supports ClickFix delivery. Blockchain RPC use and obfuscation add context but would not prove an attack by themselves.

Observation limits

This is a point-in-time observation from 7 November UTC. The browser request budget and read-only RPC inspection limit were reached, the RPC response was withheld from page execution, and no complete downstream script reference was derived. Radar did not paste or execute the command, retrieve its payload or establish infection. The walkthrough is a labelled illustration, not a recording.

Recommended response

Close verification pages that ask you to open Run, PowerShell or Terminal and paste text. Preserve the report and notify your security team. If someone already followed the steps, isolate the device and begin incident response. Review the specific captured indicators rather than blocking shared RPC providers wholesale.

View source Radar report

Evidence reflects the scan time. A compromised website can change or be repaired; this is not an assertion about every visitor or its current state.

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