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Malicious package

watestabc128RubyGems

Advisory published Updated

watestabc128 is a confirmed malicious RubyGems package (MAL-2026-9309) 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 watestabc128 (RubyGems)

MAL-2026-9309
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall watestabc128

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

9976040ca8ea43347b6f150aeb33775c1354ebc0767c0b3452fe86127b42fc95
b65c7e5032913690e3b6b02c179bdf75d81d53953889bf16dc91df0fe9d77c58

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for watestabc128 (version 0.0.1).

  2. If you installed it — respond

    Remove watestabc128 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 watestabc128 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. watestabc128 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-2026-03960RLUA-2026-09890

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks watestabc128-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

watestabc128 (RubyGems) malicious package — MAL-2026-9309 | O3 Security