INTEL_REPORT
Microsoft Security Blog · published 6/18/2026, 3:43:04 AM · TLP amber
Summary
Ingested excerpt (first ~500 chars of normalized text).
From package to postinstall payload: Inside the Mastra npm supply chain compromise A poisoned npm package infected 140+ projects with a hidden payload. This report highlights how to detect, hunt, and defend against supply chain attacks using Microsoft Defender and actionable threat intelligence. The post From package to postinstall payload: Inside the Mastra npm supply chain compromise appeared first on Microsoft Security Blog . In this article Attack chain overview Discove…
https://www.microsoft.com/en-us/security/blog/2026/06/17/postinstall-payload-inside-mastra-npm-supply-chain-compromise
sha256:d5e3dc8e482f94cd87babad94e0b1f195eccc2146b8d760f1f82ad87ecbd4931
What we pulled out
Deterministic extractor (IOC + allowlisted tokens + ATT&CK IDs present in DB).
Indicators
Linked with report → mentions → indicator. Values open the indicator workspace.
Malware families
Allowlist token matches only.
Threat actors mentioned
Allowlist mentions — not a formal attribution verdict.
ATT&CK techniques
MITRE IDs referenced in text and present in local technique table.
CONTINUE INVESTIGATION
High-signal pivots without leaving the thread you started in search.
Browse the report corpus.
Neighborhood from the first linked indicator.
| node.exe |
| Open → |
| ip | 23.254.164.92 | Open → |
| ip | 23.254.164.123 | Open → |
| domain | tutamail.com | Open → |
| domain | setup.cjs | Open → |
| domain | com.nvm.protocal.plist | Open → |
| domain | nvmconf.service | Open → |
| url | https://23.254.164.92:8000/update/49890878 | Open → |
| sha256 | 221c45a790dec2a296af57969e1165a16f8f49733aeab64c0bbd768d9943badf | Open → |
| domain | default.target | Open → |
| domain | protocal.cjs | Open → |
| domain | com.nvm.protocal | Open → |
| domain | fs.rmsync | Open → |
| domain | npmstealz.za | Open → |
| domain | reflection.assembly | Open → |
| domain | npmsteal.db | Open → |
| domain | psexec.de | Open → |
| domain | easy-day-js-1.11.22.tgz | Open → |
| domain | easy-day-js-1.11.21.tgz | Open → |
| domain | mastra-1.13.1.tgz | Open → |
| domain | protocol.cjs | Open → |
| sha256 | b122a9873bedf145ae2a7fd024b5f309007dbb025149f4dc4ac3f7e4f32a36a4 | Open → |
| sha256 | ae70dd4f6bc0d1c8c2848e4e6b51934626c4818dcb5af99d080ddbd7dc337185 | Open → |
| sha256 | 4a8860240e4231c3a74c81949be655a28e096a7d72f38fbe84e5b37636b98417 | Open → |
| sha256 | b73de25c053c3225a077738a1fcbd9ca6966d7b3cd6f5494a30f0aa0eae55c7e | Open → |