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Malicious package

wandsyardresabc2RubyGems

Advisory published Updated

wandsyardresabc2 is a confirmed malicious RubyGems package (MAL-2026-9300) that opens a backdoor for remote access (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in wandsyardresabc2 (RubyGems)

MAL-2026-9300
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall wandsyardresabc2

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

4f7f683e9826945dbdb8eb2fbe0158f15458431f29d94c0621fc5bcc223c2834
3ecf836d4993a04c94c9922fcf23ce11dad0d2af097fbb1a158f800d6d36c89d

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for wandsyardresabc2 (version 0.0.1).

  2. If you installed it — respond

    wandsyardresabc2 establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If wandsyardresabc2 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. wandsyardresabc2 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-2026-03951RLUA-2026-09881

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks wandsyardresabc2-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

wandsyardresabc2 (RubyGems) malicious package — MAL-2026-9300 | O3 Security