What does the ccsinstaller malware do?

Installing package downloads and install an infostealer Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2023-11-dgsinstaller Reasons (based on the campaign): - The package overrides the install command in setup.py to execute malicious code during installation. - infostealer - Downloads and executes a remote malicious script.

Which versions of ccsinstaller are malicious?

The following PyPI versions of ccsinstaller are flagged malicious: 1.0.0, 1.0.1, 1.0.2. Treat any of these as compromised.

How do I remediate ccsinstaller if I installed it?

ccsinstaller is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed ccsinstaller — how do I know if it already compromised me?

If ccsinstaller 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 ccsinstaller part of a known attack campaign?

Yes — ccsinstaller is associated with the 2023-11-dgsinstaller 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 ccsinstaller across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for ccsinstaller (3 malicious versions).

Malicious package

ccsinstallerPyPI

Advisory published Nov 27, 2024Updated Dec 12, 2025

ccsinstaller is a confirmed malicious PyPI package (MAL-2024-12231) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1, 1.0.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in ccsinstaller (PyPI)

MAL-2024-12231

Immediate action

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

pip uninstall ccsinstaller

What this malware does

Installing package downloads and install an infostealer

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2023-11-dgsinstaller

Reasons (based on the campaign):

The package overrides the install command in setup.py to execute malicious code during installation.
infostealer
Downloads and executes a remote malicious script.

Malicious versions

3 flagged

1.0.01.0.11.0.2

Indicators of compromise (SHA-256)

0bd48e0a27eda226cda356372deefaba372a774b6753ebd3d729efef32f8cb52

3e18cda71c2919c802b866f37fc87002396540fd6d3ea3f22b7703111c247518

b3bde2e35931ba9cb587dbfe78fe98d31b38682b9e6b05be8fd204a312a19ee0

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for ccsinstaller (3 malicious versions).
If you installed it — respond
ccsinstaller is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If ccsinstaller 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. ccsinstaller on PyPI has been identified as a malicious package (versions 1.0.0, 1.0.1, 1.0.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2023-11-dgsinstaller

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)

Detect & block this

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

Malware detection Runtime egress monitoring

Explore

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