MAL-2026-12840

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-telephony/MAL-2026-12840.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12840
Aliases
  • GHSA-j5w7-ccfc-4mrf
Published
2026-08-05T15:02:40Z
Modified
2026-08-06T01:19:59.680419764Z
Summary
Malicious code in bigops-telephony (npm)
Details

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

Source: amazon-inspector (da1b7311c033191d85d0d19c679ac9d453f7517897b57618d0d8977d654daf94)

On require('bigops-telephony'), index.js loads adapter.js which selects a platform-specific asset path, fetches an opaque binary from one of three runtime-assembled workers.dev hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev) with a DNS-TXT base64-reassembly fallback under *.dl.wel1.ru, writes it to /var/tmp or %TEMP% under disguised names such as dotnetdiag<rand>.exe or.cache<rand>, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe. Host strings are reassembled from split arrays at runtime and execution is gated by environment variables (DISABLETELEMETRY, ANALYTICSOPTOUT, DONOTTRACK) plus a marker file at /tmp/.analyticsstate to mimic legitimate telemetry. A second, currently-unreferenced dropper module at lib/telemetry.js is shipped alongside and performs the same base64-decode -> chmod 755 -> spawn /bin/sh chain under an 'analytics SDK' cover story.

Source: ghsa-malware (6a9e2c06ce50f9e0d2275d948ef9c802f9c234f8283c30416a745d3db3d1b46d)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T15:02:40Z",
            "sha256": "da1b7311c033191d85d0d19c679ac9d453f7517897b57618d0d8977d654daf94",
            "versions": [
                "35.8.4"
            ],
            "import_time": "2026-08-05T15:19:57.251964145Z",
            "id": "IN-MAL-2026-015545",
            "source": "amazon-inspector"
        },
        {
            "source": "ghsa-malware",
            "modified_time": "2026-08-05T18:41:09Z",
            "sha256": "6a9e2c06ce50f9e0d2275d948ef9c802f9c234f8283c30416a745d3db3d1b46d",
            "id": "GHSA-j5w7-ccfc-4mrf",
            "import_time": "2026-08-06T00:58:53.395175651Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bigops-telephony

Package

Name
bigops-telephony
View open source insights on deps.dev
Purl
pkg:npm/bigops-telephony

Affected ranges

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

Affected versions

35.*
35.8.4

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-telephony/MAL-2026-12840.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "sha256": "a9c2057fa0f234765c2e3804947e2d3f9cc691caa490f579221d0f2aa02ec47b",
            "tlsh": "d3a1a79a15a6701d8bb0dbf4c71b5416f657e663338082c4fb5c69981fb22244372efc",
            "path": "_adapter.js"
        },
        {
            "sha256": "2b2332cdb3bdfd8980c0d32fe4d9828f0c62bec0aa186ea18eab8db45689f509",
            "tlsh": "7e835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "path": "lib/telemetry.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "bigops-telephony-35.8.4.tgz",
            "hashes": {
                "sha1": "4d83e61fa9188734f0832378da6f501127f0a8ad",
                "sha512_sri": "sha512-cW4S5fJ4QOA8Qa5Nbi/FWlDmy+KKeRdTyr6DpG7fc0D9JTuGTnXROaOQ/cmNU2ZcZ6A9NvtDt7wPDV6sHg5ISg=="
            }
        }
    ]
}