Which versions of hfc are malicious?

The following RubyGems versions of hfc are flagged malicious: 2.9.0. Treat any of these as compromised.

How do I remediate hfc if I installed it?

Remove hfc 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 hfc — how do I know if it already compromised me?

If hfc 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.

Is hfc part of a known attack campaign?

Yes — hfc is associated with the RLMA-2024-05749, RLUA-2024-10268, RLUA-2026-08182 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find hfc across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for hfc (version 2.9.0).

Malicious package

hfcRubyGems

hfc is a confirmed malicious RubyGems package (MAL-2024-6943) that executes malicious code on install (malicious version 2.9.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in hfc (RubyGems)

MAL-2024-6943

Immediate action

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

gem uninstall hfc

Malicious versions

1 flagged

2.9.0

Indicators of compromise (SHA-256)

5a080b997a138c1e84705f5c279cbef9fff9382b312af7840120029e76ff9eea

b3a2a73acad3fc787487d2b288db14e7fc9c695e80c1518e9b0a86957c92fda3

34119e2ad47b86360bb2ac234a99136a255a9ae3a6373d4e497ede7dda047c9a

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for hfc (version 2.9.0).
If you installed it — respond
Remove hfc 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 hfc 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. hfc on RubyGems has been identified as a malicious package (version 2.9.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-05749RLUA-2024-10268RLUA-2026-08182

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks hfc-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

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