Which versions of mandrill-api-ruby are malicious?

The following RubyGems versions of mandrill-api-ruby are flagged malicious: 6.0.1. Treat any of these as compromised.

How do I remediate mandrill-api-ruby if I installed it?

Remove mandrill-api-ruby 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.

I already installed mandrill-api-ruby — how do I know if it already compromised me?

If mandrill-api-ruby 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.

How do I find mandrill-api-ruby across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for mandrill-api-ruby (version 6.0.1).

Malicious package

mandrill-api-rubyRubyGems

mandrill-api-ruby is a confirmed malicious RubyGems package (MAL-2023-1428) that executes malicious code on install (malicious version 6.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in mandrill-api-ruby (RubyGems)

MAL-2023-1428

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

gem uninstall mandrill-api-ruby

What this malware does

The OpenSSF Package Analysis project identified 'mandrill-api-ruby' @ 6.0.1 (rubygems) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

6.0.1

Indicators of compromise (SHA-256)

16f2aff274da86497ad8fe6322b501a1269cd37d3ad40e227f11126aa2da5413

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for mandrill-api-ruby (version 6.0.1).
If you installed it — respond
Remove mandrill-api-ruby 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.
Did it already run?
If mandrill-api-ruby 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. mandrill-api-ruby on RubyGems has been identified as a malicious package (version 6.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks mandrill-api-ruby-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database