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Malicious package

iamenumerPyPI

Advisory published Updated

iamenumer is a confirmed malicious PyPI package (MAL-2025-41687) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in iamenumer (PyPI)

MAL-2025-41687
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall iamenumer

What this malware does

Before creating the boto3 client, package exfiltrates user's credentials. Packages from the campaign are used as dependency in a GitHub project promising automating cloud enumeration

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

Campaign: 2025-08-aws-enumerate

Reasons (based on the campaign):

  • exfiltration-generic

  • action-hidden-in-lib-usage

  • exfiltration-credentials

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

2fb779637806a688c42fc467de4ed9d7aa7deb1817c44a9ca99d6023fa3a4a28
f6a687102676cbcee0689be14638d365e485eb34fe21956bf24c668382fe7169
2281f18809744cd511d94170c1ce172994a633aa0b8b5bc9fa9b892629b5d674
1fe148c84a46605ffa98e83b3a47078cdb3a0567db438212783acb17498145bc

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for iamenumer (version 1.0.0).

  2. If you installed it — respond

    iamenumer 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.

  3. Did it already run?

    If iamenumer 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

No. iamenumer on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-041792025-08-aws-enumerateRLUA-2026-00416

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks iamenumer-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

iamenumer (PyPI) malicious package — MAL-2025-41687 | O3 Security