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Malicious package

zjsrch2RubyGems

Advisory published Updated

zjsrch2 is a confirmed malicious RubyGems package (MAL-2026-9614) 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 zjsrch2 (RubyGems)

MAL-2026-9614
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zjsrch2

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

ddcc4ba9e91a5be973450296c6e12f3b979123713654497cd5a5822f3a83803f
15c1a050ef35274002bed3bafb78cae41bdc40d8b3ee377fca5550f0feb038b2

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zjsrch2 (version 0.0.1).

  2. If you installed it — respond

    Remove zjsrch2 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 zjsrch2 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. zjsrch2 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-2026-04265RLUA-2026-10202

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zjsrch2-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

zjsrch2 (RubyGems) malicious package — MAL-2026-9614 | O3 Security