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Malicious package

zwknum1RubyGems

Malicious code in zwknum1 (RubyGems) Remove it immediately and rotate any exposed credentials.

MAL-2026-9864
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zwknum1

Malicious versions

1 flagged
0.0.2766

Indicators of compromise (SHA-256)

68dfb326c849dace1a88a7b0d9839bddb0fad461d1f3805301ff6feadc440fb4

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for zwknum1 (version 0.0.2766). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging zwknum1 across your stack and pipelines.

  2. If you installed it — respond

    Remove zwknum1 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If zwknum1 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.

  4. How O3 protects you

    O3 blocks zwknum1 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. zwknum1 on RubyGems has been identified as a malicious package (version 0.0.2766 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-04515

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zwknum1-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

zwknum1 (RubyGems) malicious package — MAL-2026-9864 | O3 Security