MAL-2026-2889

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-evm/MAL-2026-2889.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-2889
Aliases
  • GHSA-826h-2vvx-vf77
Published
2026-04-15T22:05:03Z
Modified
2026-09-01T11:30:56Z
Summary
Malicious code in chai-as-evm (npm)
Details

chai-as-evm 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 (022142050af16941071ae35d9336fdbfda3482fde1d22711c0d7cb231cac513a)

The package chai-as-evm was found to contain malicious code.

Database specific 
{
    "iocs": {
        "urls": [
            "https://jsonkeeper.com/b/FAWPU"
        ]
    },
    "malicious-packages-origins": [
        {
            "import_time": "2026-04-23T20:49:16.236612219Z",
            "modified_time": "2026-04-23T20:43:56Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "022142050af16941071ae35d9336fdbfda3482fde1d22711c0d7cb231cac513a",
            "source": "amazon-inspector"
        },
        {
            "id": "RLMA-2026-04986",
            "import_time": "2026-07-09T09:16:21.136629619Z",
            "modified_time": "2026-07-07T12:43:08Z",
            "sha256": "98fdb52d2afc25cca6ea04769bd3a59bc045df77bb75758120349697bb3a9227",
            "source": "reversing-labs",
            "versions": [
                "1.1.2"
            ]
        },
        {
            "id": "RLUA-2026-06115",
            "import_time": "2026-09-01T11:17:58.947874342Z",
            "modified_time": "2026-08-24T16:43:15Z",
            "sha256": "cb6ac6a00d247dc4d297f9ecb2f1bb1c8e63efebfa0fff6f052c832b5638e926",
            "source": "reversing-labs"
        }
    ]
}
References
Credits

Affected packages

npm / chai-as-evm

Package

Name
chai-as-evm
View open source insights on deps.dev
Purl
pkg:npm/chai-as-evm

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-evm/MAL-2026-2889.json"