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Malicious package

proxyfooabc53ee9f5fRubyGems

Advisory published Updated

proxyfooabc53ee9f5f is a confirmed malicious RubyGems package (MAL-2026-8429) 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 proxyfooabc53ee9f5f (RubyGems)

MAL-2026-8429
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall proxyfooabc53ee9f5f

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

c9ec4a3cde5d2f601132cfcb77fd16862cd90b8ef65c661aa38384f9c7e09ea4
12afe0714658778349e9e15a3ce0d2b1a0847cc599a2f49d74f1175fd6d78253

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for proxyfooabc53ee9f5f (version 0.0.1).

  2. If you installed it — respond

    Remove proxyfooabc53ee9f5f 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 proxyfooabc53ee9f5f 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. proxyfooabc53ee9f5f 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-2026-03080RLUA-2026-08955

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks proxyfooabc53ee9f5f-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

proxyfooabc53ee9f5f (RubyGems) malicious package — MAL-2026-8429 | O3 Security