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Malicious package

ylam01778568568RubyGems

Advisory published Updated

ylam01778568568 is a confirmed malicious RubyGems package (MAL-2026-9555) 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 ylam01778568568 (RubyGems)

MAL-2026-9555
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall ylam01778568568

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d8d6b6e162daa098c0534c571998539863c62f55181acd73f4e2f02e8cf67267
1b99f46144a48563ebddbab0b5c1624a0e3e4a1da2b3927d94062a0106732594

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for ylam01778568568 (version 0.0.1).

  2. If you installed it — respond

    Remove ylam01778568568 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 ylam01778568568 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. ylam01778568568 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-2026-04206RLUA-2026-10140

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks ylam01778568568-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

ylam01778568568 (RubyGems) malicious package — MAL-2026-9555 | O3 Security