What does the safecheckit malware do?

During installation the package downloads and installs two executables identified as backdoors trojans. Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-03-thisismytest123 Reasons (based on the campaign): - Downloads and executes a remote executable. - backdoor - malware The OpenSSF Package Analysis project identified 'safecheckit' @ 2.0.0 (pypi) as malicious. It is considered malicious because: - The package executes one or more commands associated with malicious behavior.

Which versions of safecheckit are malicious?

The following PyPI versions of safecheckit are flagged malicious: 1.0.0, 2.0.0. Treat any of these as compromised.

How do I remediate safecheckit if I installed it?

safecheckit 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 safecheckit — how do I know if it already compromised me?

If safecheckit 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 safecheckit part of a known attack campaign?

Yes — safecheckit is associated with the 2026-03-thisismytest123 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 safecheckit across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for safecheckit (2 malicious versions).

Malicious package

safecheckitPyPI

Advisory published Mar 29, 2026Updated Mar 29, 2026

safecheckit is a confirmed malicious PyPI package (MAL-2026-2292) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 2.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in safecheckit (PyPI)

MAL-2026-2292

Immediate action

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

pip uninstall safecheckit

What this malware does

During installation the package downloads and installs two executables identified as backdoors trojans.

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

Campaign: 2026-03-thisismytest123

Reasons (based on the campaign):

Downloads and executes a remote executable.
backdoor
malware

The OpenSSF Package Analysis project identified 'safecheckit' @ 2.0.0 (pypi) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

2 flagged

1.0.02.0.0

Indicators of compromise (SHA-256)

84f17b127af2c89551ea0059e4741da3fb5158405fbeabf042f7d5d89a098b21

f689816cc67f4e58760477b2dd2215e5ba996fcb32e67560d18cab0a3a747bf1

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for safecheckit (2 malicious versions).
If you installed it — respond
safecheckit 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 safecheckit 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. safecheckit on PyPI has been identified as a malicious package (versions 1.0.0, 2.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-thisismytest123

References

Credits

Kamil Mańkowski (kam193) · reporter
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks safecheckit-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

All malware advisories How O3 detects malware Vulnerability database