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Malicious package

slwfossil7565RubyGems

Advisory published Updated

slwfossil7565 is a confirmed malicious RubyGems package (MAL-2026-8794) 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 slwfossil7565 (RubyGems)

MAL-2026-8794
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall slwfossil7565

Malicious versions

1 flagged
0.0.2

Indicators of compromise (SHA-256)

4e5b21d4676c02687c77a757a8923bcc5998f7e251c65f6c90cfe669db303a51
ab0707ed0321c98537265e198d9324877f06132f1c00dd4c4edac2c71eb52f9c

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for slwfossil7565 (version 0.0.2).

  2. If you installed it — respond

    Remove slwfossil7565 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 slwfossil7565 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. slwfossil7565 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-2026-03445RLUA-2026-09343

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks slwfossil7565-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

slwfossil7565 (RubyGems) malicious package — MAL-2026-8794 | O3 Security