Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
Malicious package

remjsonparsePyPI

Malicious code in remjsonparse (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-1290
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall remjsonparse

What this malware does

During import, package starts advanced compromise actions: exfiltrates AWS and git credentials, commands history, security tools in use. After that, the code waits for further commands from C2. The code is also prepared to configure persistence through autostart keys, crontabs or Linux services, as well as to configure new SSH credentials for remote access.

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

Campaign: 2026-03-remjsonparse

Reasons (based on the campaign):

  • The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

  • typosquatting

  • peristence-autorun

  • exfiltration-generic

  • exfiltration-credentials

Malicious versions

7 flagged
0.1.00.1.10.1.20.1.30.1.40.1.60.1.7

Indicators of compromise (SHA-256)

e478d1e016f1d6d6d1cb4a9d23ac45449c22d99aa8e71c88d2f38fae8951f23f

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for remjsonparse (7 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging remjsonparse across your stack and pipelines.

  2. If you installed it — respond

    remjsonparse 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 remjsonparse was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks remjsonparse before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. remjsonparse on PyPI has been identified as a malicious package (versions 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.6, 0.1.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-remjsonparse

References

Credits

  • Kamil Mańkowski (kam193) · analyst

Detect & block this

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

remjsonparse (PyPI) malicious package — MAL-2026-1290 | O3 Security