Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
Malicious package

zwtd103RubyGems

Advisory published Updated

zwtd103 is a confirmed malicious RubyGems package (MAL-2026-9903) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in zwtd103 (RubyGems)

MAL-2026-9903
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zwtd103

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

9e9b528a49f8687180faddc004dfa6792aef3974ce56e9e51433449f837dd094
5c3b399a04cf6b975ee4813ed777a0296806f05b373a255d6a3a9acde041b751

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zwtd103 (version 0.0.1).

  2. If you installed it — respond

    Remove zwtd103 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 zwtd103 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. zwtd103 on RubyGems has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-04554RLUA-2026-10492

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zwtd103-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.

Explore

zwtd103 (RubyGems) malicious package — MAL-2026-9903 | O3 Security