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Malicious package

zjgview5RubyGems

Advisory published Updated

zjgview5 is a confirmed malicious RubyGems package (MAL-2026-9593) 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 zjgview5 (RubyGems)

MAL-2026-9593
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zjgview5

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

6d105cb344df2361c569ebabed356968bb9829d04999be5ec0b477384f9f307a
92fce2cb88b6a9c2b6e876476ca6ff90517d4e0e955acd47a48d9b161bfd3675

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zjgview5 (version 0.0.1).

  2. If you installed it — respond

    Remove zjgview5 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 zjgview5 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. zjgview5 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-2026-04244RLUA-2026-10181

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zjgview5-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

zjgview5 (RubyGems) malicious package — MAL-2026-9593 | O3 Security