LWA-2026-10262 MAL-2026-13266 ↗ confirmed malware

devplatform-table@35.7.6

Malicious code in devplatform-table (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1573 · Encrypted ChannelT1082 · System Information DiscoveryT1059 · Command and Scripting Interpreter

Analysis

On require, the package runs a dropper that downloads a binary payload from Cloudflare Workers endpoints oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev and oob-worker[.]cf101-adf[.]workers[.]dev (path /pkg/package), with a DNS-TXT fallback that reassembles a base64-encoded payload from TXT records on c[.]sdk[.]dl[.]wel1[.]ru. The payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), made executable, and launched as a detached background process via /bin/sh -c or cmd.exe start /b. The package also fingerprints the host OS/architecture before download.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 01:39 PM
analyzed
Aug 5, 2026, 02:48 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.