MAL-2026-13576
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:34
Modified
2026-08-07 12:34
Summary
Malicious code in dolyame-ui-inputcount (npm)
Details

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

Source: amazon-inspector (e7a3d0d930d73916ee9555c5a2c1ca8596f25a4336041d881f268504ad8fab06)

On require() of the package, helpers.js runs a setup() routine that detects host OS/architecture, downloads a platform-specific binary from one of four obfuscated *.workers.dev endpoints (oob-worker.cf99-9b3.workers.dev, cf100-416.workers.dev, cf102-baf.workers.dev, cf103-070.workers.dev) with DNS-TXT fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the payload to /var/tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods it to 0755, and spawns it detached via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true, stdio:'ignore'}).unref(). Endpoint hostnames, DNS fallback labels, dropped-file names, require('child_process'), and fs.chmodSync are assembled from string fragments (e.g., ['oob-worker.','cf99-9b3.workers.dev'].join(''), require('child_' + 'process'), fs['chmod' + 'Sync']) to defeat plain-text pattern matching, with cover-story comments framing the code as an 'Analytics SDK' with 'exponential backoff retries'. A marker file /tmp/.analytics_state gates re-execution. The declared main entry lib/telemetry.js embeds a second parallel implementation of the same fetch/write/chmod/spawn primitives (base64 chunk reassembly, Buffer.from(chunks, 'base64'), chmod 0755, cp.spawn('/bin/sh', ['-c', filePath + ' &'],...)) dressed as an observability SDK. The name dolyame-ui-inputcount mimics a component-library naming convention and has no legitimate reason to fetch and execute an opaque binary from anonymous Cloudflare Worker infrastructure at import time.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
Credits

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "_helpers.js",
              "sha256": "14da71ffd89002a0b681cff97fafc52bcc31dc786b0672ed973ba7bce519091b",
              "tlsh": "e5a1a61a16fa30140792e5d8891f4816719ef98336c4e8c4fb4ca6995f9b238c3b39fc"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "c0c650bdd03d5049580ebb4b3ca3e40d413fb9e54444c5014228f7e256b5cf52",
              "tlsh": "2c733f4966fb10214263b0685fbb40437635c4072a4aed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-ui-inputcount-35.8.1.tgz",
              "hashes": {
                "sha1": "e57b343c59951c729f76cd1e42fdab2a9263bec4",
                "sha512_sri": "sha512-CPsKPnwlRwrqkeohde9KMbDlrj6GTyViNaPlZXIkY70heM6B7El4XWfVg2rvEu3Vj2Vig/wITz/X/yllMIzKaQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-ui-inputcount"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017036",
        "import_time": "2026-08-07T12:51:23.170669994Z",
        "modified_time": "2026-08-07T12:34:37Z",
        "sha256": "e7a3d0d930d73916ee9555c5a2c1ca8596f25a4336041d881f268504ad8fab06",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (e7a3d0d930d73916ee9555c5a2c1ca8596f25a4336041d881f268504ad8fab06)\nOn require() of the package, _helpers.js runs a setup() routine that detects host OS/architecture, downloads a platform-specific binary from one of four obfuscated `*.workers.dev` endpoints (oob-worker.cf99-9b3.workers.dev, cf100-416.workers.dev, cf102-baf.workers.dev, cf103-070.workers.dev) with DNS-TXT fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the payload to /var/tmp/.cache_\u003chex\u003e on Unix or %TEMP%\\dotnet_diag_\u003chex\u003e.exe on Windows, chmods it to 0755, and spawns it detached via `cp.spawn(\u0027/bin/sh\u0027, [\u0027-c\u0027, fp + \u0027 \u0026\u0027], {detached:true, stdio:\u0027ignore\u0027}).unref()`. Endpoint hostnames, DNS fallback labels, dropped-file names, `require(\u0027child_process\u0027)`, and `fs.chmodSync` are assembled from string fragments (e.g., `[\u0027oob-worker.\u0027,\u0027cf99-9b3.workers.dev\u0027].join(\u0027\u0027)`, `require(\u0027child_\u0027 + \u0027process\u0027)`, `fs[\u0027chmod\u0027 + \u0027Sync\u0027]`) to defeat plain-text pattern matching, with cover-story comments framing the code as an \u0027Analytics SDK\u0027 with \u0027exponential backoff retries\u0027. A marker file `/tmp/.analytics_state` gates re-execution. The declared main entry `lib/telemetry.js` embeds a second parallel implementation of the same fetch/write/chmod/spawn primitives (base64 chunk reassembly, `Buffer.from(chunks, \u0027base64\u0027)`, chmod 0755, `cp.spawn(\u0027/bin/sh\u0027, [\u0027-c\u0027, filePath + \u0027 \u0026\u0027],...)`) dressed as an observability SDK. The name `dolyame-ui-inputcount` mimics a component-library naming convention and has no legitimate reason to fetch and execute an opaque binary from anonymous Cloudflare Worker infrastructure at import time.\n",
  "id": "MAL-2026-13576",
  "modified": "2026-08-07T12:34:37Z",
  "published": "2026-08-07T12:34:37Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-ui-inputcount/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-ui-inputcount (npm)"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…