my-package-jiecub3PyPI
Advisory published Updated
my-package-jiecub3 is a confirmed malicious PyPI package (MAL-2026-2962) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.1.0, 1.2.0…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in my-package-jiecub3 (PyPI)
What this malware does
During installation, the package attempts to create a reverse shell
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-04-my-package-jiecub3
Reasons (based on the campaign):
- The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for my-package-jiecub3 (7 malicious versions).
If you installed it — respond
my-package-jiecub3 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 my-package-jiecub3 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 my-package-jiecub3-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.