LWA-2026-11601 confirmed malware

@atfm/utils@99.99.99

Malicious code in @atfm/utils (npm)

T1059.007 · JavaScriptT1082 · System Information DiscoveryT1071.001 · Web ProtocolsT1041 · Exfiltration Over C2 Channel

Analysis

The package is a tiny stub (no functional code) whose preinstall and install hooks both run on installation: they collect the installer's username, hostname, current working directory, and package name, base64-encode them, and transmit them to the remote host callback[.]m0chan[.]co[.]uk via an HTTP GET to hxxps://<package-name>.callback[.]m0chan[.]co[.]uk/<encoded-data>, and additionally leak the data through a DNS query (nslookup) to the same domain. This exfiltrates host metadata to an external callback server on every install.

analyzed by
Leitwacht
first seen
Aug 24, 2026, 03:15 PM
analyzed
Aug 24, 2026, 03:16 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.