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Malicious package

vanc4inrp1778552437RubyGems

Advisory published Updated

vanc4inrp1778552437 is a confirmed malicious RubyGems package (MAL-2026-9101) 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 vanc4inrp1778552437 (RubyGems)

MAL-2026-9101
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall vanc4inrp1778552437

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

1ae2212d0872d7ff020dda64eec7c13b0b0a7ce035ed05c7ae6eacc05c724383
91476fefe14571f552dda4353224cc5fb3fba3babb46789b8a4672216210ca82

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for vanc4inrp1778552437 (version 0.0.1).

  2. If you installed it — respond

    Remove vanc4inrp1778552437 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 vanc4inrp1778552437 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. vanc4inrp1778552437 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-2026-03752RLUA-2026-09681

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks vanc4inrp1778552437-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

vanc4inrp1778552437 (RubyGems) malicious package — MAL-2026-9101 | O3 Security