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Malicious package

gemx559383abcRubyGems

Advisory published Updated

gemx559383abc is a confirmed malicious RubyGems package (MAL-2026-7709) 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 gemx559383abc (RubyGems)

MAL-2026-7709
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall gemx559383abc

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

9de5bdb60516d6577496536907f8bc1c2f01056f84dde91fb1ec807ddf5aaeb6
10978bbf27fadb709482d23f855f401b71adf2c1c17573c51c52ea37e00c00e7

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for gemx559383abc (version 0.0.1).

  2. If you installed it — respond

    Remove gemx559383abc 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 gemx559383abc 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. gemx559383abc 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-2026-02360RLUA-2026-08142

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks gemx559383abc-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

gemx559383abc (RubyGems) malicious package — MAL-2026-7709 | O3 Security