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Malicious package

twork-data-services-eacq-company-service-v2-api-v1-identifiers-crmnpm

Advisory published Updated

twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm is a confirmed malicious npm package (MAL-2026-12291) that steals credentials and exfiltrates sensitive data (malicious version 20.6.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm (npm)

MAL-2026-12291
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm

What this malware does

index.js unconditionally requires setup.js on module load. setup.js reconstructs C2 hostnames at runtime from split string fragments (resolving to oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, with a DNS-TXT fallback channel under *.dl.well1.site), downloads a platform-specific binary, writes it to a temp path with a masquerading filename (.cache_<hex>, dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe with no hash or signature verification. The package's advertised purpose does not require any native binary. Environment variables such as DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, and DO_NOT_TRACK are checked to skip execution, consistent with sandbox/analyst evasion. A sibling module lib/telemetry.js, not currently reached from the entrypoint, ships the same spawn(/bin/sh) + chmodSync 0755 + base64-buffer decode pattern with split 'child_'+'process' require, indicating a staged alternate dropper bundled with the package.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
20.6.7

Indicators of compromise (SHA-256)

a35dfc30f1440b5057988bc44c6bdaecee3c33317799c140354ed7adae679838
f5347a9e766906ea14e00c25f2456b052a97595000922bbb18ad9eeba28e6e93

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm (version 20.6.7).

  2. If you installed it — respond

    twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm 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.

  3. Did it already run?

    If twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm on npm has been identified as a malicious package (version 20.6.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014599GHSA-c75f-43pv-m83v

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

twork-data-services-eacq-company-service-v2-api-v1-identifiers-crm (npm) malicious package — MAL-2026-12291 | O3 Security