MAL-2026-12854

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-videocalls/MAL-2026-12854.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12854
Aliases
  • GHSA-mg7c-j5rh-f6g9
Published
2026-08-05T15:00:49Z
Modified
2026-08-06T01:20:03.412714763Z
Summary
Malicious code in bigops-videocalls (npm)
Details

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

Source: amazon-inspector (4b04bc16010479f488969366f0af5596c33f668da075e09d5d1b8fad737f03cd)

On require of the package's main entry, support.js executes at import time: it selects a platform-specific path, fetches an opaque native binary from one of four hardcoded Cloudflare workers.dev hosts (oob-worker.cf101-adf/99-9b3/100-416/103-070.workers.dev), with a DNS TXT covert-channel fallback at *.dl.wel1.ru, writes the bytes to /var/tmp or %TEMP% under disguised filenames (.cache<hex> on POSIX, dotnetdiag<hex>.exe on Windows), sets mode 0755, and spawns the dropped file detached via /bin/sh -c or cmd.exe /c start. C2 hostnames are assembled from split string arrays (e.g. ['oob-worker.cf101-adf.worker','s.de','v'].join('')) to defeat static IOC extraction, and telemetry opt-out env vars are checked as cover. Dropped filenames impersonate system diagnostics artifacts. Requiring or installing this package results in download-and-execute of attacker-controlled native code on the installer's host.

Source: ghsa-malware (4cdb0ba7c13eb96c82c29d53786642ef0c7d738d10d0e2af5036b95740d24b3c)

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": [
        {
            "versions": [
                "35.9.9"
            ],
            "import_time": "2026-08-05T15:19:56.521076516Z",
            "sha256": "4b04bc16010479f488969366f0af5596c33f668da075e09d5d1b8fad737f03cd",
            "id": "IN-MAL-2026-015533",
            "modified_time": "2026-08-05T15:00:49Z",
            "source": "amazon-inspector"
        },
        {
            "import_time": "2026-08-06T00:58:53.414741657Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "id": "GHSA-mg7c-j5rh-f6g9",
            "sha256": "4cdb0ba7c13eb96c82c29d53786642ef0c7d738d10d0e2af5036b95740d24b3c",
            "modified_time": "2026-08-05T18:46:40Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-videocalls

Package

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

Affected ranges

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

Affected versions

35.*
35.9.9

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "bigops-videocalls-35.9.9.tgz",
            "hashes": {
                "sha512_sri": "sha512-IcFJGFNEA0S6wAu1IkYU+OgXfLk/Ibh3bfUA3F9naEM5xskBzSrtfL2iKABFcb8B+ToHY2R8KXwhht06wdECpA==",
                "sha1": "9ae080e9fdb5e4e5225f3fec0e3a20a70260796b"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_support.js",
            "sha256": "4e9e98524da79b1194eca442c44a5952c2c77bfbd84947e346313e7654beb514",
            "tlsh": "eeb1969616aa70198bb0e7e0c71b4816f55af6633781c2c4fb9c65881fb35248372efc"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-videocalls/MAL-2026-12854.json"