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Malicious package

zlam_mode12909RubyGems

Advisory published Updated

zlam_mode12909 is a confirmed malicious RubyGems package (MAL-2026-9639) 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 zlam_mode12909 (RubyGems)

MAL-2026-9639
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zlam_mode12909

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

62e516709116d1e2243d73cc650978887d711948869f34b91d0d85a5b2023844
19e5231feefabadad7fea61dda57a9a832c1263023a68ae6d11d38ac20885e99

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zlam_mode12909 (version 0.0.1).

  2. If you installed it — respond

    Remove zlam_mode12909 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 zlam_mode12909 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. zlam_mode12909 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-2026-04290RLUA-2026-10227

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zlam_mode12909-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

zlam_mode12909 (RubyGems) malicious package — MAL-2026-9639 | O3 Security