mal-2026-2902
Vulnerability from ossf_malicious_packages
Published
2026-04-15 22:05
Modified
2026-04-23 20:50
Summary
Malicious code in lockedin-chai-chain (npm)
Details

lockedin-chai-chain is a malicious npm package that when imported downloads a C2 dropper from https://jsonkeeper[.]com/b/FAWPU and executes it (similar to malware in to chai-await-test).

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (5f043508b642cb099f524948847b7a4835d3646132e8728ce3ee38864f14b733)

The package lockedin-chai-chain was found to contain malicious code.

Credits
Amazon Inspector actran@amazon.com
indece indece.com
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "lockedin-chai-chain"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "SEMVER"
        }
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "actran@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://indece.com"
      ],
      "name": "indece",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "iocs": {
      "urls": [
        "https://jsonkeeper.com/b/FAWPU"
      ]
    },
    "malicious-packages-origins": [
      {
        "import_time": "2026-04-23T20:49:07.750024719Z",
        "modified_time": "2026-04-23T20:43:56Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "SEMVER"
          }
        ],
        "sha256": "5f043508b642cb099f524948847b7a4835d3646132e8728ce3ee38864f14b733",
        "source": "amazon-inspector"
      }
    ]
  },
  "details": "lockedin-chai-chain is a malicious npm package that when imported downloads a C2 dropper from https://jsonkeeper[.]com/b/FAWPU and executes it (similar to malware in to chai-await-test).\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (5f043508b642cb099f524948847b7a4835d3646132e8728ce3ee38864f14b733)\nThe package lockedin-chai-chain was found to contain malicious code.\n",
  "id": "MAL-2026-2902",
  "modified": "2026-04-23T20:50:51Z",
  "published": "2026-04-15T22:05:03Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://www.indece.com/en-US/blog/7df041ba-feb1-4d87-918b-7fc2c709d805"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in lockedin-chai-chain (npm)"
}


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Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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