LWA-2026-11359 confirmed malware

comander-lib@1.0.0

Malicious code in comander-lib (npm)

T1059.007 · JavaScriptT1059 · Command and Scripting InterpreterT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1082 · System Information DiscoveryT1041 · Exfiltration Over C2 Channel

Analysis

The postinstall hook (scripts/postinstall.js) beacons host information to a remote C2 and, on Windows/WSL hosts, downloads and executes a second-stage binary. It POSTs a JSON payload with the host platform/architecture/node version to 193[.]70[.]34[.]101:20099/vote. On Windows and WSL it XOR-decodes an embedded download URL (key 'stf2026'), fetches a binary into %TEMP%\main.exe, and launches it as a detached background process (spawn with detached:true, stdio ignored, windowsHide:true); on WSL it also runs a shell bridge command via exec() to install the addon. The dropped main.exe runs independently of the installer.

analyzed by
Leitwacht
first seen
Aug 16, 2026, 02:50 AM
analyzed
Aug 16, 2026, 03:01 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.