Critical Malware Feed Entry Detected 2026-08-20
Malware feed entry — detected by codelake scanners. This package was flagged malicious by our own detection pipeline. See the rules that fired and the package identifiers below. Full analysis, timeline and IOCs live on hand-curated advisories at /advisories; this page is the machine-generated receipt for the live feed.
Detection details
[email protected] published to npm, flagged by codelake scanners on 2026-08-20 09:41 UTC.
Detector rules that fired on this package:
- Package combines 4 high-risk capabilities (network, filesystem, process, obfuscation) across multiple findings — combined profile indicates likely malware
behavior.escalate.capability-combination - Install lifecycle hook (postinstall) executes a bundled script that itself contains malicious-behavior findings: postinstall.js
behavior.scripts.install-hook-runs-flagged-script - Source writes to an AI-agent config/instruction file (CLAUDE.md / .claude / .cursor / MCP config / copilot-instructions / agent rules) — agent-control-surface tampering
behavior.static.agent-config-tamper - Source spawns a child process with a non-literal command
behavior.static.child-spawn-dynamic - Source loads a module from a non-literal name — opaque dependency
behavior.static.dynamic-require - Source writes a file and chmod's it executable — local-stager pattern
behavior.static.fs-write-and-chmod - Source builds strings from char codes / hex escapes — obfuscation (often wraps a hidden payload)
behavior.static.obfuscation-charcode - Assembled string (escape, 1 fragments) reconstructs to "import " — code-token
mosaic.assembled-code-token - Assembled string (template, 3 fragments) reconstructs to "powershell -NoProfile -Command \"[Environment]::GetEnvironmentVariable('PATH', 'User')\"" — command; fed to a dynamic-execution sink
mosaic.assembled-command
OSV reference: MAL-2026-13462
This is an auto-generated entry in the codelake malware feed. Hand-curated deep case studies live on /advisories.