LWA-2026-7494 MAL-2026-12479 ↗ confirmed malware

time-linters-webapp-eslint-config@20.2.2

Malicious code in time-linters-webapp-eslint-config (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1082 · System Information DiscoveryT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1573 · Encrypted ChannelT1041 · Exfiltration Over C2 Channel

Analysis

At install/require time, the package executes _runtime.js which fingerprints the host (OS, architecture, CPU count, memory, hostname), then downloads a platform-specific binary from Cloudflare Workers C2 infrastructure (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) via HTTPS GET /pkg/package. If HTTPS fails, it falls back to DNS TXT record-based binary delivery via c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /var/tmp/.cache_<random> (Linux/macOS) or %TEMP%\dotnet_diag_<random>.exe (Windows) and executed as a detached background process. The package has no repository, no README, and its name impersonates an ESLint configuration package.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 04:09 PM
analyzed
Aug 2, 2026, 04:11 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.