Which versions of sprox-c160-0fossil are malicious?

The following RubyGems versions of sprox-c160-0fossil are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate sprox-c160-0fossil if I installed it?

Remove sprox-c160-0fossil 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 sprox-c160-0fossil — how do I know if it already compromised me?

If sprox-c160-0fossil 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 sprox-c160-0fossil part of a known attack campaign?

Yes — sprox-c160-0fossil is associated with the RLMA-2026-03512, RLUA-2026-09418 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 sprox-c160-0fossil across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for sprox-c160-0fossil (version 0.0.1).

Malicious package

sprox-c160-0fossilRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

sprox-c160-0fossil is a confirmed malicious RubyGems package (MAL-2026-8861) 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 sprox-c160-0fossil (RubyGems)

MAL-2026-8861

Immediate action

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

gem uninstall sprox-c160-0fossil

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

1fc8634ac2c07b8003d5a6800a10b9d97cbef773172a037f37fe177c7031d959

681b4116cc7b08dfe04511e441ba526fea2e15149926a419cb8f43804f9f8568

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for sprox-c160-0fossil (version 0.0.1).
If you installed it — respond
Remove sprox-c160-0fossil 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 sprox-c160-0fossil 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. sprox-c160-0fossil 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-2026-03512RLUA-2026-09418

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks sprox-c160-0fossil-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