LWA-2026-12223 MAL-2026-16344 ↗ confirmed malware

sorrawit-dev-helper@1.0.0

Malicious code in sorrawit-dev-helper (npm)

T1059.007 · JavaScriptT1102 · Web ServiceT1041 · Exfiltration Over C2 Channel

Analysis

The package ships no code; its postinstall hook runs a node one-liner that reads /tmp/flag.txt and exfiltrates the file contents to the remote endpoint hxxps://ca37-49-237-83-218[.]ngrok-free[.]app/?flag=[.][.]. via an HTTP GET. Installing the package triggers the file read and the outbound exfiltration to the ngrok tunnel host.

analyzed by
Leitwacht
first seen
Sep 18, 2026, 04:42 AM
analyzed
Sep 18, 2026, 04:43 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.