@or-sdk/cards@1.2.7
Malicious code in @or-sdk/cards (npm)
T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1027 · Obfuscated Files or InformationT1195.002 · Compromise Software Supply Chain
Analysis
The package's preinstall hook (setup.mjs) downloads the Bun runtime from a GitHub release URL and uses it to execute a 727KB obfuscated script (math_init.js) bundled in the package. The script is obfuscated with a large encoded string array and a custom decoder, concealing its behaviour. The package also depends on three sibling packages (@or-sdk/base, @or-sdk/data-hub-svc, @or-sdk/tags) that are known-malicious. Installing this package runs the obfuscated payload at install time via a downloaded runtime.
- analyzed by
- Leitwacht
- first seen
- Aug 4, 2026, 11:59 AM
- analyzed
- Aug 4, 2026, 04:53 PM
- weekly installs
- 92
Related advisories
- @or-sdk/base@0.44.6
- @or-sdk/sdk-api@0.29.4
- @or-sdk/providers@0.3.8
- @or-sdk/data-hub@0.26.7
- webdev-conf@5.0.0
- @or-sdk/library-source@0.4.7
- @or-sdk/knowledge-models@0.25.7
- @or-sdk/deployments@2.1.7
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.