{"items":[{"id":"NVI-00011020","kind":"supply_chain_event","title":"Malicious code in typesens (npm)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mh5h-258m-rw22"],"plain_summary":"GitHub lists this malware advisory for typesens. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-9288907b0c96c35411fa6ef162addd30"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-9288907b0c96c35411fa6ef162addd30","url":"https://github.com/advisories/GHSA-mh5h-258m-rw22","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mh5h-258m-rw22","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:05.881Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9288907b0c96c35411fa6ef162addd30"],"technology":"typesens","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (3ded39f31b2c2d4d73e0b576ab862c9ed90688153a43c359dae5b26854ad8738)\npackage.json declares postinstall `wscript.exe 4444.vbs`, which runs automatically on `npm install`. The shipped 4444.vbs (~765 KB) contains a multi-layer decryption chain (AES S-box, ChaCha20-IETF, SHA-256 constants XOR-masked with 0x5A5A5A5A) over ~665 base64 chunks, decodes a payload to %TEMP% as a.dat file, drops a PowerShell loader, and invokes powershell.exe to perform process hollowing on Windows. Function names in the VBS are randomized (PlatformProbeLVI, DeviceCatalogUBYQ, EndpointRegistryRFX) and the `CreateObject` target is XOR-decoded at runtime; a cover-story header labels the file as a 'Verdant Signals Corp Device Telemetry Aggregator'. The advertised library surface — src/index.js is a trivial zod-based email-domain check with no network I/O, and the README claims 'No installation scripts' and describes a 'booking-eligibility' utility — is a decoy contradicting the package.json `files` entry that ships 4444.vbs and the postinstall hook that runs it. The typosquat-shaped name (typesens) reinforces the lure framing.\n\n---\n\nCredit: [OpenSSF](https://github.com/ossf/malicious-pa","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T23:18:22.424Z","source_updated_at":"2026-10-05T06:30:41.000Z","source_disclosed_at":"2026-10-05T06:30:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T23:13:05.881Z"}],"next_cursor":null,"snapshot_revision":"42594"}