Malicious code in evm-typechain (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0a78b4d04410e295cbe340c95e6800a0777717d46ce136f0c30b5593d1bd9738) On require, index.js issues an HTTPS GET to https://www.jsonkeeper.com/b/PC5CK, passes the returned JSON `cookie` field to `new Function('require',...)`, and invokes it with the real `require` capability. The invocation is concealed at the end of index.js behind a long run of tab whitespace on the same line as `module.exports = leanhooksPlugin;`, and the file carries a false `Mongoose LeanHooks Plugin` header that does not match the package's advertised purpose. The remote content is attacker-mutable (unpinned, no hash/signature) and executes with full module-loading capability, giving arbitrary remote code execution in any Node.js process that imports the package. The package name and description impersonate the widely used TypeChain project (`type-safe bindings for Ethereum smart contracts`), while the shipped code is an unrelated Mongoose plugin stub bolted to the remote loader; the repository URL (`drudge/evm-typeschain`) is a spelling mismatch. This is a typosquat lure fronting an import-time RCE dropper. ## Source: ghsa-malware (7f309e50be1b9923d440673fba72e6c345b370828f8d8a0e313afb6d6d2e96f0) 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.
AI Analysis
Technical Summary
The 'evm-typechain' package in the npm ecosystem has been identified as containing malicious code. Installation or execution of this package results in a full system compromise, potentially allowing attackers to control the affected computer. Due to the severity of the compromise, simply uninstalling the package may not remove all malicious artifacts. The advisory strongly recommends rotating all secrets and keys from a different, uncompromised machine to mitigate ongoing risks.
Potential Impact
Any system with the 'evm-typechain' package installed or running is considered fully compromised, meaning attackers may have complete control over the system. This includes potential unauthorized access to all stored secrets and keys, which must be rotated immediately. The presence of the package indicates a severe security breach with high risk to confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Remove the 'evm-typechain' package immediately from all affected systems. Rotate all secrets and keys stored on the compromised machines from a separate, secure computer. Because full control of the system may have been given to an attacker, further forensic analysis and remediation may be necessary to ensure complete removal of malicious software. No official patch or fix is available as this is a malicious package; prevention involves avoiding installation and removing the package if found.
Malicious code in evm-typechain (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0a78b4d04410e295cbe340c95e6800a0777717d46ce136f0c30b5593d1bd9738) On require, index.js issues an HTTPS GET to https://www.jsonkeeper.com/b/PC5CK, passes the returned JSON `cookie` field to `new Function('require',...)`, and invokes it with the real `require` capability. The invocation is concealed at the end of index.js behind a long run of tab whitespace on the same line as `module.exports = leanhooksPlugin;`, and the file carries a false `Mongoose LeanHooks Plugin` header that does not match the package's advertised purpose. The remote content is attacker-mutable (unpinned, no hash/signature) and executes with full module-loading capability, giving arbitrary remote code execution in any Node.js process that imports the package. The package name and description impersonate the widely used TypeChain project (`type-safe bindings for Ethereum smart contracts`), while the shipped code is an unrelated Mongoose plugin stub bolted to the remote loader; the repository URL (`drudge/evm-typeschain`) is a spelling mismatch. This is a typosquat lure fronting an import-time RCE dropper. ## Source: ghsa-malware (7f309e50be1b9923d440673fba72e6c345b370828f8d8a0e313afb6d6d2e96f0) 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.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'evm-typechain' package in the npm ecosystem has been identified as containing malicious code. Installation or execution of this package results in a full system compromise, potentially allowing attackers to control the affected computer. Due to the severity of the compromise, simply uninstalling the package may not remove all malicious artifacts. The advisory strongly recommends rotating all secrets and keys from a different, uncompromised machine to mitigate ongoing risks.
Potential Impact
Any system with the 'evm-typechain' package installed or running is considered fully compromised, meaning attackers may have complete control over the system. This includes potential unauthorized access to all stored secrets and keys, which must be rotated immediately. The presence of the package indicates a severe security breach with high risk to confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Remove the 'evm-typechain' package immediately from all affected systems. Rotate all secrets and keys stored on the compromised machines from a separate, secure computer. Because full control of the system may have been given to an attacker, further forensic analysis and remediation may be necessary to ensure complete removal of malicious software. No official patch or fix is available as this is a malicious package; prevention involves avoiding installation and removing the package if found.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6932
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-c4gm-jp6q-h9hq"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a4e4f0dc9d9e3dbe328e0f5
Added to database: 07/08/2026, 13:22:21 UTC
Last enriched: 07/08/2026, 13:52:38 UTC
Last updated: 07/31/2026, 02:44:13 UTC
Views: 25
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