MAL-2026-4859
Malicious code in telethon-pro-safe (PyPI)
Details
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## Source: kam193 (8bc2e515c2eb7bf73ea5d532cfb6701dcaf3dd95e9d8248ee3d426b1d0c1ed8c) During installation, package executes obfuscated code that starts a RAT-like software allowing remote control and exfiltrating sensitive data.
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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-05-telethon-pro-safe
Reasons (based on the campaign):
- rat
- The package overrides the install command in setup.py to execute malicious code during installation.
- exfiltration-credentials
- exfiltration-browser-data
- The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.
- The package contains code to detect if it is running in a sandbox environment.
- The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
- infostealer
- obfuscation
Are you affected?
Enter the version of the package you're using.
Affected packages
No fixed version published yet for telethon-pro-safe (pip). Pin to a known-safe version or switch to an alternative.