boxy-mops @35.2.9
Vulnerability report · Last retrieved from osv.dev August 8, 2026 at 9:15 PM UTC
OSV ID
MAL-2026-13073
Ecosystem
npm
Summary
On require(), boxy-mops loads _compat.js, which assembles attacker-controlled hostnames from split string fragments (resolving to oob-worker.cf1XX-XXX.workers.dev and the *.dl.wel1.ru family: sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), performs an HTTPS GET for a platform-specific binary, writes the bytes under disguised names (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows) into /tmp or %TEMP%, chmods the file 0755, and detach-spawns it via /bin/sh -c or cmd.exe /c start with unref(). A DNS TXT chunked fallback channel is present for exfiltration/instruction retrieval when HTTPS is blocked. Runtime string reconstruction is used to hide destination hosts from static inspection; a DISABLE_TELEMETRY / DO_NOT_TRACK environment guard suppresses execution on analyst machines; a /tmp/.analytics_state cache stamp gates repeat runs. The advertised 'telemetry/analytics' framing does not match the observed behavior — the package fetches and executes opaque non-publisher binaries on the installer's host at import time.
Source: amazon-inspector (d377c600e4c23a91ca7b5c4465804849e0427d7f14392877ad961244142fe477)
Protect your entire dependency tree
Scan your lock files automatically on every PR. Block malicious packages before they reach production.