ln9qw38745gPyPI
Advisory published Updated
ln9qw38745g is a confirmed malicious PyPI package (MAL-2026-18583) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in ln9qw38745g (PyPI)
What this malware does
Package ships an embedded executable identified as malware by AV vendors, and is related to a previously discovered package that after a few releases swapt benign exe with a malicious RAT.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-11-filipt
Reasons (based on the campaign):
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The package overrides the install command in setup.py to execute malicious code during installation.
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malware
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rat
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for ln9qw38745g (2 malicious versions).
If you installed it — respond
ln9qw38745g 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 ln9qw38745g 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
Campaign
References
Credits
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks ln9qw38745g-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.