heroku-tlPyPI
Advisory published Updated
heroku-tl is a confirmed malicious PyPI package (MAL-2025-2967) that steals credentials and exfiltrates sensitive data (malicious versions 2.1.0, 2.1.1, 2.2.2…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in heroku-tl (PyPI)
What this malware does
Clone of a legit Telegram client, with a hidden code that, under some conditions, can attempt to destroy the Linux OS.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-03-heroku-tl
Reasons (based on the campaign):
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clones-real-package
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action-hidden-in-lib-usage
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for heroku-tl (15 malicious versions).
If you installed it — respond
heroku-tl 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 heroku-tl 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)
- ReversingLabs · finder
Detect & block this
O3 blocks heroku-tl-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.