Malware in theta-kit
Malware was discovered in the npm package theta-kit, resulting in full system compromise for any computer with the package installed or running. All secrets and keys on affected systems should be rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with theta-kit installed or running
- Ecosystems
- Attack vectors
- Affected entities
- theta-kitnpm package
A critical malware incident was identified in the npm package theta-kit. According to the GitHub advisory (GHSA-ccpw-cfwc-qgw4), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately from a different, uncompromised system. While the package should be removed, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the initial compromise, given that the outside entity may have gained full control of the system.\n\nAffected users should treat their systems as potentially fully compromised and take appropriate incident response measures.
Indicators of compromise
- Packages
- theta-kit
Remediation
- Immediately rotate all secrets and keys from a different, uncompromised computer
- Remove the theta-kit package from all affected systems
- Conduct a full security audit and forensic analysis of any system that had theta-kit installed
- Monitor affected systems for signs of persistent malware or unauthorized access
- Consider rebuilding affected systems from clean media if full compromise is suspected
Sources
- GitHub Advisory GHSA-ccpw-cfwc-qgw4 · GitHub Advisory Database
Cite this entry
"Malware in theta-kit." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 6, 2026; last updated July 6, 2026. https://supplychainattack.org/incident/malware-in-theta-kit-1eo20s
Suggest a correction
Found an error or have a newer source? Corrections to factual errors take priority over new entries.
Related incidents
- containedcritical
Malicious code in ladash-cli (npm)
ladash-cli is a typosquat package on npm that executes malicious code during installation. The postinstall script downloads and executes a Windows binary, with special handling for WSL environments to compromise the underlying Windows host.
npmTyposquattingCompromised package - containedcritical
Malicious code in comand (npm)
The npm package 'comand' contained malicious code that executed automatically on install via postinstall.js, exfiltrating platform information and downloading an unsigned executable (main.exe) to Windows systems or via WSL PowerShell bridges. The package name appears to be a typosquat of 'command', and the GitHub owner (braz1) does not match the npm publisher.
npmCompromised packageTyposquatting - resolvedcritical
Malicious code in core-js-gns (npm)
The npm package core-js-gns contained malicious code in its postinstall hook that exfiltrated system information and executed remotely-fetched Python code on developer machines. The package name was a typosquat of the legitimate core-js library.
npmCompromised packageTyposquatting - resolvedcritical
Malicious code in comander-lib (npm)
comander-lib@1.0.0 is a typosquat of the legitimate `commander` package containing malicious code. The package's postinstall script exfiltrates system information to a C2 server and downloads and executes a Windows payload, with capability to escape WSL/Linux sandboxes via PowerShell.
npmTyposquattingCompromised package