Malicious code in @hoteldev/common (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9bb27849cbb16840b019ef47d6a84627d61eb9d48df28da5a9bc1a208e1ff758) build/index.js appends an eval(atob(...)) block after the normal __exportStar section that decodes to an import-time loader. The loader resolves a C2 IP by reading an Ethereum transaction associated with wallet 0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a (via eth_getBlockByNumber), then issues HTTP requests to http://<derived-IP>:443/0x/cls and http://<derived-IP>:443/0x/ls with an x-payload-b64 header, XOR-decrypts the responses, and launches each decoded body through spawn('node', ['-e', <payload>], {detached: true, stdio: 'ignore', windowsHide: true}).unref(). Strings inside the payload (http, https, spawn, child_process, eth_getBlockByNumber, x-payload-b64) are written as \u#### unicode escapes to hide the behavior from casual review. The loader runs on any require/import of the package, giving the operator of the on-chain-designated host arbitrary, hidden, detached code execution on the installer's machine, with the C2 address rotatable via a new Ethereum transaction. ## Source: ghsa-malware (aacfc893117769583694bc71a02db63d49b37b36243c48e00fa492c68e6beb37) 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 @hoteldev/common npm package version 1.0.9 includes obfuscated malicious code that appends an eval(atob(...)) block to the module exports. This block acts as a loader that queries the Ethereum blockchain for a transaction linked to a specific wallet address to derive a C2 server IP. It then sends HTTP requests with encoded headers to this server, XOR-decrypts the responses, and executes the resulting code as detached Node.js processes. The malicious strings are encoded as Unicode escapes to evade casual code review. This behavior triggers on any import or require of the package, allowing the attacker to run arbitrary code on the host system stealthily.
Potential Impact
This malicious package enables an attacker to achieve arbitrary, hidden, and detached code execution on any machine that installs and imports @hoteldev/common version 1.0.9. The attacker can rotate the C2 server address dynamically via Ethereum transactions, complicating detection and response. This poses a severe risk of system compromise, data theft, or further malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove and avoid installing version 1.0.9 of @hoteldev/common. Audit existing environments for this package and replace it with trusted alternatives. Monitor for suspicious Node.js processes spawned detached from normal workflows. Check vendor advisories or npm security advisories for updates or official fixes.
Malicious code in @hoteldev/common (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9bb27849cbb16840b019ef47d6a84627d61eb9d48df28da5a9bc1a208e1ff758) build/index.js appends an eval(atob(...)) block after the normal __exportStar section that decodes to an import-time loader. The loader resolves a C2 IP by reading an Ethereum transaction associated with wallet 0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a (via eth_getBlockByNumber), then issues HTTP requests to http://<derived-IP>:443/0x/cls and http://<derived-IP>:443/0x/ls with an x-payload-b64 header, XOR-decrypts the responses, and launches each decoded body through spawn('node', ['-e', <payload>], {detached: true, stdio: 'ignore', windowsHide: true}).unref(). Strings inside the payload (http, https, spawn, child_process, eth_getBlockByNumber, x-payload-b64) are written as \u#### unicode escapes to hide the behavior from casual review. The loader runs on any require/import of the package, giving the operator of the on-chain-designated host arbitrary, hidden, detached code execution on the installer's machine, with the C2 address rotatable via a new Ethereum transaction. ## Source: ghsa-malware (aacfc893117769583694bc71a02db63d49b37b36243c48e00fa492c68e6beb37) 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 @hoteldev/common npm package version 1.0.9 includes obfuscated malicious code that appends an eval(atob(...)) block to the module exports. This block acts as a loader that queries the Ethereum blockchain for a transaction linked to a specific wallet address to derive a C2 server IP. It then sends HTTP requests with encoded headers to this server, XOR-decrypts the responses, and executes the resulting code as detached Node.js processes. The malicious strings are encoded as Unicode escapes to evade casual code review. This behavior triggers on any import or require of the package, allowing the attacker to run arbitrary code on the host system stealthily.
Potential Impact
This malicious package enables an attacker to achieve arbitrary, hidden, and detached code execution on any machine that installs and imports @hoteldev/common version 1.0.9. The attacker can rotate the C2 server address dynamically via Ethereum transactions, complicating detection and response. This poses a severe risk of system compromise, data theft, or further malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove and avoid installing version 1.0.9 of @hoteldev/common. Audit existing environments for this package and replace it with trusted alternatives. Monitor for suspicious Node.js processes spawned detached from normal workflows. Check vendor advisories or npm security advisories for updates or official fixes.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12318
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a735747bf8831d53915a0b2
Added to database: 08/05/2026, 15:31:19 UTC
Last enriched: 08/05/2026, 17:37:24 UTC
Last updated: 09/13/2026, 22:02:46 UTC
Views: 24
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