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Malicious package

@demica/sharednpm

Malicious code in @demica/shared (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5351
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @demica/shared

What this malware does

Note: This report is updated by a verification record

Dep-confusion squat of internal @demica/shared at sentinel high version 99.99.100 + auto-exec postinstall (canary.js) beaconing to RAW IP 157.230.17.236:80/dc. Sentinel-high-version + auto-exec beacon = MALICIOUS per operator policy (c913); "authorized canary" framing does NOT downgrade, raw-IP dest matches masterkrweb. 6-pkg @demica canary campaign.

@demica/[email protected] declares postinstall: node canary.js postinstall in package.json, which fires automatically on npm install. canary.js issues a plaintext HTTP GET to bare IP 157.230.17.236:80 at path /dc?... with query parameters including os.hostname(), the package name/version, a nonce, and the lifecycle phase. The installer's host identifier is disclosed to a third-party endpoint over unauthenticated HTTP without consent. The package self-describes as a 'dependency-confusion canary' and uses an inflated version (99.99.100) under the @demica scope to outrank a presumed internal package of the same name — the canonical dependency-confusion attack shape. Regardless of the operator's stated intent, any party that resolves this public package on npm install is beaconed to an attacker-shaped destination (bare IP, plaintext HTTP, no opt-out).

Malicious versions

1 flagged
99.99.100

Indicators of compromise (SHA-256)

dfc020ab633bac129072df0d74deea8e0a2e118b43dbebf01ba9bbf2b13b6e76

Frequently asked questions

No. @demica/shared on npm has been identified as a malicious package (version 99.99.100 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-005010

References

Credits

  • Amazon Inspector · finder
  • SafeDep · finder

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Supply-chain protection
@demica/shared (npm) malicious package — MAL-2026-5351 | O3 Security