LWA-2026-7676 MAL-2026-12153 ↗ confirmed malware

bigops-awesome-viewer@35.1.4

Malicious code in bigops-awesome-viewer (npm)

T1195.002 · Compromise Software Supply ChainT1059 · Command and Scripting InterpreterT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1568.002 · DNS CalculationT1204.002 · Malicious File

Analysis

At require time, the package downloads and executes a binary payload. It detects the OS/architecture, then fetches a binary from Cloudflare Workers endpoints (oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) via HTTPS. If those fail, it falls back to DNS TXT-record-based chunked download from domains including sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<random-hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows) and spawned as a detached process. The package has no repository and no documented purpose beyond a generic description.

analyzed by
Leitwacht
first seen
Aug 3, 2026, 06:58 PM
analyzed
Aug 3, 2026, 07:02 PM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.