MAL-2026-13459

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/streak-map-cache/MAL-2026-13459.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13459
Aliases
  • GHSA-v2fj-c673-2gjm
Published
2026-08-06T15:31:13Z
Modified
2026-08-10T00:50:16Z
Summary
Malicious code in streak-map-cache (npm)
Details

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

Source: amazon-inspector (d6ae48e032b5494c8939d41973598b9dd35d5954ccf6850cd633e7992995cc6b)

The package advertises itself as a dependency-free day/streak math library, but its main entrypoint (dist/index.mjs) contains a top-level async IIFE that unconditionally chmods 0755 and spawns a bundled Linux ELF at dist/internal/calc-map.bin as a detached child process on every import/require. The JavaScript day-math logic in dist/internal/daymath.mjs is pure JS and never invokes the binary; a placeholder _ensureEngine() simply returns true, and code comments acknowledge the binary is cosmetic. The ELF is a RedShell C2 implant: it beacons to hardcoded C2 217.60.77.63 over plain HTTP, treats received input as shell commands, and implements reverse-shell, SOCKS5 proxy, TCP port-forwarding, memfd_create-based ELF/shellcode download-and-exec from http://217.60.77.63/Others/* and /SC/*, chunked file exfiltration to http://217.60.77.63/api/extract-receive, operator commands for SSH-key/credential/database harvesting (/ssh_keys, /creds, /dbfind, /env, /clipboard, /download, /dataextract), and systemd --user persistence. Cover-story framing (README, log strings, sha256 'integrity gate') labels the binary a 'native math accelerator' to defeat cursory review.

Source: ghsa-malware (b177c03c762501864b5b883d86f29137ebf6e03d516a338c31655434d3195c09)

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": [
        {
            "id": "IN-MAL-2026-016652",
            "import_time": "2026-08-06T18:09:01.640154801Z",
            "modified_time": "2026-08-06T15:31:13Z",
            "sha256": "d6ae48e032b5494c8939d41973598b9dd35d5954ccf6850cd633e7992995cc6b",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "id": "GHSA-v2fj-c673-2gjm",
            "import_time": "2026-08-09T23:21:54.558675Z",
            "modified_time": "2026-08-07T17:48:31Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "b177c03c762501864b5b883d86f29137ebf6e03d516a338c31655434d3195c09",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / streak-map-cache

Package

Name
streak-map-cache
View open source insights on deps.dev
Purl
pkg:npm/streak-map-cache

Affected ranges

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

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "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"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "dist/index.mjs",
            "sha256": "c753b7cbd2ffb89ad51dc6f48714204df8955d000520174329dd3785aede4562",
            "tlsh": "82413466afbd572997fc0782ce38b193252d84431f96dc95d94e473861c0b98d3c0979"
        },
        {
            "path": "dist/internal/calc-map.bin",
            "sha256": "4537b1189ce419f1a595cf47216c03f80e9170ce80dad8d9227a1e52f9cb3466",
            "tlsh": "83531a2bbdc28e3fc084d53087dfd42269b5705aaa33712f26111f293d59a69473f72a"
        },
        {
            "path": "dist/internal/daymath.mjs",
            "sha256": "c61a136ac79d294bd83bf01be5e9093a22ae721a7a37d85f25e3918247ca785e",
            "tlsh": "063144f5e2d85374d7b992509e0ad54aa32cf6373f56c541504c25e02483811f37dfd9"
        }
    ],
    "package_integrity": [
        {
            "filename": "streak-map-cache-1.0.0.tgz",
            "hashes": {
                "sha1": "c82af2395c9e14a5a42afe0af52521c38589e0ed",
                "sha512_sri": "sha512-swusKqc89ExBLEWouro3oQ35H9UJp53fG4NDNwq95emd+wqr5VOnOmHCOJQYjqaUUOn8j2vzGjj79D032XzBOw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/streak-map-cache/MAL-2026-13459.json"