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Malicious package

xwandstestfoobarxRubyGems

Advisory published Updated

xwandstestfoobarx is a confirmed malicious RubyGems package (MAL-2026-9548) 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 xwandstestfoobarx (RubyGems)

MAL-2026-9548
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall xwandstestfoobarx

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

072898c89eb5b7acafd1f7b8c53c97f39d97833110f819c1737871082062d275
890b9e929ff1a2c605ef261cf9b66ac5a58e60c2c128af7cf98b4d6f5f5c7c92

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove xwandstestfoobarx 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 xwandstestfoobarx 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. xwandstestfoobarx 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-2026-04199RLUA-2026-10132

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks xwandstestfoobarx-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

xwandstestfoobarx (RubyGems) malicious package — MAL-2026-9548 | O3 Security