monogroknpm
monogrok is a confirmed malicious npm package (MAL-2026-10638) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.1, 1.0.7, 1.0.8…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in monogrok (npm)
What this malware does
Package advertises itself as a bulk-mailing / mail-server abuse toolkit (homepage mntmc.rip) and ships modules for bulk mail delivery (func/snd/mlr/), SMTP credential brute/scan against third-party providers including AWS SES (func/smx/ — aws.js, awssho.js, awsxt.js, crdv.js, passgo.js, vaws.js), Shodan enumeration (func/sho/), IMAP/POP3/EWS/M365 mailbox access (func/box/imap.js, pop3.js, ewsv.js, msap.js), Chrome cookie handling (func/box/chrm.js, ckie.js, ckpr.js), redirector chains (func/rdt/), IP/proxy rotation (func/ipr/*), and email extractors. The entire code tree (396 files) is protected with javascript-obfuscator (string-array + RC4-style decoder + self-defending wrapper); devDependencies declare javascript-obfuscator and caxa (single-binary packager). The package's main (oibWljdTg.js) wires an integrity/tamper subsystem at load time that, on integrity failure, POSTs hostname, os.userInfo().username, cwd, pid, timestamp, and a Bearer token read from ~/.monotomic.token to https://api.mntmc.rip/ibW9B3RlbmF/token/security/tamper. Installer-side impact under this engine's threat model is limited: the offensive functionality targets third-party mail servers and credential owners, not the installer (the installer is the operator who chose to run this tooling); the load-time POST carries only limited host identifiers plus a token that the package itself provisioned in the installer's home directory, so it is closer to license/anti-tamper phone-home than to credential-harvest exfiltration. There is no traced read of ~/.aws/, ~/.ssh/, ~/.npmrc, browser secret stores, or environment credential scraping in this package's own load path. Routing to human review because (a) the package is commercial abuse-tooling sold through an external portal, which many downstream distribution channels will want to advisory on regardless of installer-side attack shape, and (b) the combination of full-tree obfuscation + author-endpoint load-time beacon + offensive purpose is a composite risk that a human should adjudicate for publication policy.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for monogrok (18 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging monogrok across your stack and pipelines.
If you installed it — respond
monogrok 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 monogrok 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.
How O3 protects you
O3 blocks monogrok 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks monogrok-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.