What does the devplatform-spa-tokens malware do?

On require(), index.js loads _support.js, which assembles Cloudflare Workers hostnames (oob-worker.cf*.workers.dev) and fallback domain sdk.dl.wel1.ru at runtime from split string arrays joined via.join(""), downloads a platform-specific binary from those hosts (with a DNS TXT chunked fallback via c. /i. records when HTTPS is blocked), writes the payload to a temp path with a disguised name (e.g. dotnet_diag_ .exe,.cache_ ), chmods 0755 on POSIX, and spawns it detached via spawn("/bin/sh") or spawn("cmd"). Execution is gated by DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env vars and a /tmp/.analytics_state cache, framing the dropper as analytics. The advert

Which versions of devplatform-spa-tokens are malicious?

The following npm versions of devplatform-spa-tokens are flagged malicious: 35.3.1. Treat any of these as compromised.

How do I remediate devplatform-spa-tokens if I installed it?

devplatform-spa-tokens is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed devplatform-spa-tokens — how do I know if it already compromised me?

If devplatform-spa-tokens was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is devplatform-spa-tokens part of a known attack campaign?

Yes — devplatform-spa-tokens is associated with the IN-MAL-2026-014996 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find devplatform-spa-tokens across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for devplatform-spa-tokens (version 35.3.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging devplatform-spa-tokens across your stack and pipelines.

Malicious package

devplatform-spa-tokensnpm

devplatform-spa-tokens is a confirmed malicious npm package (MAL-2026-12785) that steals credentials and exfiltrates sensitive data (malicious version 35.3.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in devplatform-spa-tokens (npm)

MAL-2026-12785

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall devplatform-spa-tokens

What this malware does

On require(), index.js loads support.js, which assembles Cloudflare Workers hostnames (oob-worker.cf*.workers.dev) and fallback domain sdk.dl.wel1.ru at runtime from split string arrays joined via.join(""), downloads a platform-specific binary from those hosts (with a DNS TXT chunked fallback via c.<domain>/i.<domain> records when HTTPS is blocked), writes the payload to a temp path with a disguised name (e.g. dotnet_diag<rand>.exe,.cache_<rand>), chmods 0755 on POSIX, and spawns it detached via spawn("/bin/sh") or spawn("cmd"). Execution is gated by DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env vars and a /tmp/.analytics_state cache, framing the dropper as analytics. The advertised TokenManager API is a decoy — no relation to the download-and-execute behavior. Destination hosts are anonymous workers.dev / lookalike infrastructure, not the package's stated purpose or publisher.

Malicious versions

1 flagged

35.3.1

Indicators of compromise (SHA-256)

6127d0c2ccf2b21fdd6f22244b040c905b2296c86c47cc3c4eb012b61a4c455a

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for devplatform-spa-tokens (version 35.3.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging devplatform-spa-tokens across your stack and pipelines.
If you installed it — respond
devplatform-spa-tokens is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If devplatform-spa-tokens was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks devplatform-spa-tokens before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. devplatform-spa-tokens on npm has been identified as a malicious package (version 35.3.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014996

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks devplatform-spa-tokens-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

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