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Malicious package

slt27395RubyGems

Advisory published Updated

slt27395 is a confirmed malicious RubyGems package (MAL-2026-8779) that executes malicious code on install (malicious version 0.0.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in slt27395 (RubyGems)

MAL-2026-8779
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall slt27395

Malicious versions

1 flagged
0.0.2

Indicators of compromise (SHA-256)

f84b044bf304f6284de56c4e5573b7ef0b78069485e42760fddb15b5480ce2e4
4a02866bff8bff54c62999026cc29551a93c15d3b9abd751e704937a7928027e

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for slt27395 (version 0.0.2).

  2. If you installed it — respond

    Remove slt27395 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 slt27395 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. slt27395 on RubyGems has been identified as a malicious package (version 0.0.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-03430RLUA-2026-09328

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks slt27395-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

slt27395 (RubyGems) malicious package — MAL-2026-8779 | O3 Security