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OpenAdvisories
Malicious MAL-2025-191674

aiogram-msgeffect

PyPI package · versions 1.2.1, 1.1.4

Reported Nov 22, 2025 · Updated Mar 19, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (edd5a99e6d1cebb47e713991f08b50dee4b5bf93ae487f6adc446318ccdba6e7)
Importing the module starts obfuscated code which then look for data related to some Telegram clients and attempt to exfiltrate them

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

Campaign: 2025-11-tgeffect

Reasons (based on the campaign):

- obfuscation

- target:telegram

- exfiltration-credentials