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Malicious package

8y234rtv8yvfNuGet

Advisory published Updated

8y234rtv8yvf is a confirmed malicious NuGet package (MAL-2026-1883) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in 8y234rtv8yvf (NuGet)

MAL-2026-1883
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
remove 8y234rtv8yvf

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

b40511ee00c790d08e4ad3af1c374f1c2a52302c5bde510cc551bea461cadd7f

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for 8y234rtv8yvf (version 1.0.0).

  2. If you installed it — respond

    Remove 8y234rtv8yvf 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 8y234rtv8yvf 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. 8y234rtv8yvf on NuGet has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-00011

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks 8y234rtv8yvf-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

8y234rtv8yvf (NuGet) malicious package — MAL-2026-1883 | O3 Security