Which versions of web3-utils-crypto are malicious?

The following npm versions of web3-utils-crypto are flagged malicious: 1.10.4. Treat any of these as compromised.

How do I remediate web3-utils-crypto if I installed it?

web3-utils-crypto 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.

I already installed web3-utils-crypto — how do I know if it already compromised me?

If web3-utils-crypto 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.

Is web3-utils-crypto part of a known attack campaign?

Yes — web3-utils-crypto is associated with the IN-MAL-2026-015784 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find web3-utils-crypto across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for web3-utils-crypto (version 1.10.4).

Malicious package

web3-utils-cryptonpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

web3-utils-crypto is a confirmed malicious npm package (MAL-2026-13354) that steals credentials and exfiltrates sensitive data (malicious version 1.10.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in web3-utils-crypto (npm)

MAL-2026-13354

Immediate action

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

npm uninstall web3-utils-crypto

What this malware does

web3-utils-crypto impersonates the web3-utils library (package description: 'Drop-in replacement for web3-utils') and ships stub wallet APIs including generateMnemonic and createWallet that return non-functional random values. On require(), index.js serializes the full process.env plus os.hostname, username, homedir, platform, cwd, package name/version and timestamp, base64-encodes the payload, and sends it via HTTPS GET to https://api.telegram.org/bot<token>/sendMessage with chat_id 8969499041 (bot id 7231970337). A tmp flag file suppresses repeat sends. process.env on developer and CI machines routinely contains AWS_*, GITHUB_TOKEN, NPM_TOKEN, DB_PASSWORD and similar credentials, so any consumer that installs and loads this package leaks its full environment to the attacker-controlled Telegram chat.

Malicious versions

1 flagged

1.10.4

Indicators of compromise (SHA-256)

d1f0dfc7ad97140ef740758424cd859d9c25ee55a6d6346859cebaf1e64cdce9

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for web3-utils-crypto (version 1.10.4).
If you installed it — respond
web3-utils-crypto 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.
Did it already run?
If web3-utils-crypto 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. web3-utils-crypto on npm has been identified as a malicious package (version 1.10.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015784

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks web3-utils-crypto-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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