{"id":"MAL-2026-17299","revision":null,"records":[{"revision":"276d5034526d4e0e9d3bfce3f83afced","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-17299","aliases":[],"title":"Malicious code in testosu8887 (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7d9d3296b770afd3fdebaf4df9d113873e9c77d2d498d2e7941a3465eeb6f97d)\nOn require or CLI invocation, dist/index.cjs and dist/cli.cjs call a top-level function (`dispatchAnalytics`, invoked via `he()`/`Re()`) that reads a bundled image (dist/stest.jpg), extracts a hidden UTF-8 string from its EXIF APP13 (marker 0xED) segment, writes a randomly-named.vbs file to the OS temp directory, and spawns wscript.exe detached with `windowsHide:true` to run it. The VBS launches powershell.exe with an `-EncodedCommand` argument sourced from the image; the decoded PowerShell downloads https://m1.ppy.sh/r/osu!install.exe to %LOCALAPPDATA%\\Temp\\lahost.exe and executes it via Start-Process. Sensitive tokens are assembled at runtime from array joins (`[\"power\",\"shell\",\".exe\"].join(\"\")`, `[\"wscript\",\".exe\"].join(\"\")`, split `-NoProfile`/`-NonInteractive`/`-EncodedCommand` fragments) and the payload body is hidden in JPEG EXIF rather than present as source strings, concealing the behavior from static scanners. The package name suggests a test/typosquat targeting the osu! game community.\n","state":0,"publishedAt":"2026-09-29T23:05:23+00:00","modifiedAt":"2026-09-29T23:30:05.068151+00:00","affected":[{"ecosystem":"npm","name":"testosu8887","ranges":[],"versions":["1.0.1"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/testosu8887/v/1.0.1"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-17299","license":"OSV · upstream source license applies","key":"osv:MAL-2026-17299","identifiers":["MAL-2026-17299"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T05:58:40.9203184+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T05:58:40.9203184+00:00","lastSuccessAt":"2026-11-12T05:58:41.095627+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:58:41.0956282+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-88a69dfec4d1b83d929ca06b957aa3a4484cd80632df1e27cf4c312635b2bedd","complete":true,"records":424594,"lastAttemptAt":"2026-11-12T05:56:53.4810169+00:00","lastSuccessAt":"2026-11-12T05:56:53.4611758+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:56:53.4810169+00:00","snapshotPublishedAt":"2026-11-12T05:28:30+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-dfa2c4aaec6f4aecad791663dd265c1b","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T06:00:32.7256045+00:00","lastSuccessAt":"2026-11-12T06:00:32.721+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:00:32.721+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-12T05:58:40.9203184+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T05:58:40.9203184+00:00","lastSuccessAt":"2026-11-12T05:58:41.0963887+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:58:41.0963888+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-6b3a361b3e0f452d8ff70bd272635b35","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T05:59:00.2510884+00:00","lastSuccessAt":"2026-11-12T05:59:00.248+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:59:00.248+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-12T05:58:40.8633143+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:58:40.8633143+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-12T05:56:53.625749+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:56:53.625749+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-12T05:58:40.8782632+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:58:40.8782632+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-eb5176d73e87a862c4cae7484f3fd31f7d170139114b3e99e25926d661f6435b","complete":true,"records":231700,"lastAttemptAt":"2026-11-12T05:58:40.7363027+00:00","lastSuccessAt":"2026-11-12T05:58:39.2691741+00:00","error":null,"lastVerifiedAt":"2026-11-12T05:58:40.7363027+00:00","snapshotPublishedAt":"2026-11-12T05:48:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}