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Malicious package

zsgsearch1RubyGems

Advisory published Updated

zsgsearch1 is a confirmed malicious RubyGems package (MAL-2026-9788) 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 zsgsearch1 (RubyGems)

MAL-2026-9788
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zsgsearch1

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d0a1efbb32233c1ca84bd383d6ac1b3ca86ad15023d4da9b1310699c60eb36a4
0445410eeb3a6a8a2a39a2d034c51beb3263b5d8c377fa9f0b97a0775de8b928

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zsgsearch1 (version 0.0.1).

  2. If you installed it — respond

    Remove zsgsearch1 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 zsgsearch1 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. zsgsearch1 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-2026-04439RLUA-2026-10377

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zsgsearch1-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

zsgsearch1 (RubyGems) malicious package — MAL-2026-9788 | O3 Security