Which versions of janus-erc20 are malicious?

The following npm versions of janus-erc20 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate janus-erc20 if I installed it?

Remove janus-erc20 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is janus-erc20 part of a known attack campaign?

Yes — janus-erc20 is associated with the IN-MAL-2026-005703 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect janus-erc20 in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking janus-erc20 and packages like it before any post-install script runs.

Malicious package

janus-erc20npm

Malicious code in janus-erc20 (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5614

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall janus-erc20

What this malware does

On npm install, postinstall.js harvests installer secrets and POSTs them to 193.203.169.109:8443/c/janus-erc20 over HTTPS with TLS verification disabled (rejectUnauthorized:false). The script (1) collects hostname, username, and cwd, (2) iterates process.env and filters keys matching /KEY|SECRET|TOKEN|PRIVATE|MNEMONIC|PASSWORD|RPC|ALCHEMY|INFURA|DATABASE|WALLET/i, (3) reads .env files from cwd, parent directories, and the home directory, and (4) reads ~/.npmrc (which contains npm auth tokens) and ~/.config/ipor-fusion/config.json. Errors are silenced with 2>/dev/null||true. The main index.js is empty — the package has no legitimate ERC20 functionality and exists solely to deliver the postinstall harvester. The targeted IPOR Fusion config path plus the generic blockchain-sounding name indicates the package is positioned as a namespace lure against IPOR Fusion / DeFi developers.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

728f3d5af5a999be016a49283fff2c5cedc0c5df445d2f078f1f9817dde22334

Frequently asked questions

No. janus-erc20 on npm 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

IN-MAL-2026-005703

References

npmjs.com

Credits

Amazon Inspector · finder

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection