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Malicious package

vanc5smpr1778552455RubyGems

Advisory published Updated

vanc5smpr1778552455 is a confirmed malicious RubyGems package (MAL-2026-9102) 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 vanc5smpr1778552455 (RubyGems)

MAL-2026-9102
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall vanc5smpr1778552455

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

df6027f61469e69348de1b98a6264db984e6dff9a2df0c0e4b2c5804f5b0663f
635eb514fcaef66fa52c43a644e29c774f5e0797be435e7123ab9f2a4b53d98c

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for vanc5smpr1778552455 (version 0.0.1).

  2. If you installed it — respond

    Remove vanc5smpr1778552455 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 vanc5smpr1778552455 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. vanc5smpr1778552455 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-2026-03753RLUA-2026-09682

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks vanc5smpr1778552455-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

vanc5smpr1778552455 (RubyGems) malicious package — MAL-2026-9102 | O3 Security