LWA-2026-10778 MAL-2026-13531 ↗ confirmed malware

damir-cbr-dawdntrnssbf@35.8.1

Malicious code in damir-cbr-dawdntrnssbf (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1059 · Command and Scripting Interpreter

Analysis

On require, this package downloads and executes a remote binary. It fetches a payload over HTTPS from oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf101-adf[.]workers[.]dev at path /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe by platform). If HTTPS is blocked it falls back to a DNS-TXT chunked base64 transfer from the wel1[.]ru domain family (c[.]sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the temp dir on Windows), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c '... &'.

analyzed by
Leitwacht
first seen
Aug 7, 2026, 11:25 AM
analyzed
Aug 7, 2026, 11:26 AM

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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.