Destructive Malware Available In NPM Repo Went Unnoticed For 2 Years

An anonymous reader quotes a report from Ars Technica: Researchers have found malicious software that received more than 6,000 downloads from the NPM repository over a two-year span, in yet another discovery showing the hidden threats users of such open source archives face. Eight packages using names that closely mimicked those of widely used legitimate packages contained destructive payloads designed to corrupt or delete important data and crash systems, Kush Pandya, a researcher at security firm Socket, reported Thursday. The packages have been available for download for more than two years and accrued roughly 6,200 downloads over that time.

"What makes this campaign particularly concerning is the diversity of attack vectors -- from subtle data corruption to aggressive system shutdowns and file deletion," Pandya wrote. "The packages were designed to target different parts of the JavaScript ecosystem with varied tactics." [...] Some of the payloads were limited to detonate only on specific dates in 2023, but in some cases a phase that was scheduled to begin in July of that year was given no termination date. Pandya said that means the threat remains persistent, although in an email he also wrote: "Since all activation dates have passed (June 2023-August 2024), any developer following normal package usage today would immediately trigger destructive payloads including system shutdowns, file deletion, and JavaScript prototype corruption." The list of malicious packages included js-bomb, js-hood, vite-plugin-bomb-extend, vite-plugin-bomb, vite-plugin-react-extend, vite-plugin-vue-extend, vue-plugin-bomb, and quill-image-downloader.

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SecRule REQUEST_URI "@rx ..." "id:1001,phase:1,deny,status:403"

find /var/www -type f -name "*.php" -mmin -120

ss -tunp | grep -E ":(4444|1337|8080|9001)"

apt update && apt --only-upgrade install <pkg>

title: Detect Exploitation - Destructive Malware Available In NPM Repo Went Unnoticed For 2 Years
id: f6f2c9f5-4c3f-4133-88fb-76e3ed98899d
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access

rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-24"
        description = "YARA Signature for "
    strings:
        $str = "Destructive Malware Available " ascii wide
    condition:
        any of them
}