@or-sdk/library-categories@0.2.8
Malicious code in @or-sdk/library-categories (npm)
T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1027 · Obfuscated Files or InformationT1195.002 · Compromise Software Supply Chain
Analysis
The package's preinstall hook (node setup.mjs) downloads the Bun JavaScript runtime from github[.]com/oven-sh/bun/releases/download/bun-v1.3.13/ and uses it to execute a bundled 727KB obfuscated script (math_init.js) at install time. The script is obfuscated with an encoded string array and a custom decoder, hiding its payload strings. The package also depends on the known-malicious packages @or-sdk/base and @or-sdk/providers. A library-categories SDK has no legitimate reason to download a runtime and run an obfuscated payload during installation.
- analyzed by
- Leitwacht
- first seen
- Aug 4, 2026, 11:58 AM
- analyzed
- Aug 4, 2026, 05:37 PM
- weekly installs
- 376
Related advisories
- @or-sdk/base@0.44.6
- @or-sdk/sdk-api@0.29.4
- @or-sdk/providers@0.3.8
- @or-sdk/content-request@0.2.8
- @or-sdk/adapters@0.3.8
- @or-sdk/tables@0.28.7
- @or-sdk/store@2.1.7
- @or-sdk/bots@1.7.3
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.