Malicious code in statist-browser-typed-client-sme.rko.finance.web (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9f8aa3f187231d6a828b8d3cd99eee3f0b3dbb95abecc8ebf1add2c393f59b15) On require() of the package, _support.js assembles remote hostnames from split-string array joins (e.g. ["oob-wo","rker.cf1","02-baf.workers.","dev"].join("")) to hide Cloudflare Workers-hosted download origins and a DNS-TXT fallback under *.dl.well1.site. It selects a platform-specific path, downloads an opaque native binary over HTTPS, writes it to /tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe,.cache_<hex>), chmods it 0o755 on POSIX, and spawns it detached (detached:true, stdio:"ignore",.unref()) via /bin/sh -c or cmd.exe /c start /b. A marker file.analytics_state throttles re-download to ~6.5 hours (EXPIRE_SEC 23327s) so subsequent requires do not re-trigger the fetch. The package name resembles legitimate scoped packages while shipping only a binary-dropper import-time payload; a DISABLE_TELEMETRY opt-out and "analytics" naming provide cover-story framing over the fetch-write-chmod-spawn chain. ## Source: ghsa-malware (ad6959e1bd9f23751057c2c7d61d91cc3a6bf7dff795ad045271dabaac5c77eb) 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
This malicious npm package, identified as statist-browser-typed-client-sme.rko.finance.web version 20.7.7, executes a multi-stage attack upon require(). It constructs obfuscated remote hostnames to download a native binary payload over HTTPS from Cloudflare Workers-hosted origins and a DNS-TXT fallback domain. The binary is saved to temporary directories with disguised filenames, permissions are set to executable on POSIX systems, and it is spawned detached from the parent process using shell commands. A marker file throttles re-download frequency to approximately every 6.5 hours. The package's naming and telemetry opt-out features are designed to evade detection and appear legitimate.
Potential Impact
The package enables remote code execution on the host system by downloading and executing an opaque native binary without user consent or awareness. This can lead to unauthorized system compromise, persistence, and potentially further malicious activities. The obfuscation and disguised execution reduce the likelihood of detection by standard security tools.
Mitigation Recommendations
No official patch or remediation is currently available. Users should immediately remove the affected package version (=20.7.7) from their environments and avoid installing or requiring this package. Employing supply chain security measures such as verifying package provenance, using trusted registries, and scanning dependencies for malicious content is recommended. Monitor for any unexpected binaries or processes spawned from npm packages and restrict execution permissions in temporary directories where feasible. Patch status is not yet confirmed — check the vendor advisory or trusted security sources for updates.
Malicious code in statist-browser-typed-client-sme.rko.finance.web (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9f8aa3f187231d6a828b8d3cd99eee3f0b3dbb95abecc8ebf1add2c393f59b15) On require() of the package, _support.js assembles remote hostnames from split-string array joins (e.g. ["oob-wo","rker.cf1","02-baf.workers.","dev"].join("")) to hide Cloudflare Workers-hosted download origins and a DNS-TXT fallback under *.dl.well1.site. It selects a platform-specific path, downloads an opaque native binary over HTTPS, writes it to /tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe,.cache_<hex>), chmods it 0o755 on POSIX, and spawns it detached (detached:true, stdio:"ignore",.unref()) via /bin/sh -c or cmd.exe /c start /b. A marker file.analytics_state throttles re-download to ~6.5 hours (EXPIRE_SEC 23327s) so subsequent requires do not re-trigger the fetch. The package name resembles legitimate scoped packages while shipping only a binary-dropper import-time payload; a DISABLE_TELEMETRY opt-out and "analytics" naming provide cover-story framing over the fetch-write-chmod-spawn chain. ## Source: ghsa-malware (ad6959e1bd9f23751057c2c7d61d91cc3a6bf7dff795ad045271dabaac5c77eb) 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
This malicious npm package, identified as statist-browser-typed-client-sme.rko.finance.web version 20.7.7, executes a multi-stage attack upon require(). It constructs obfuscated remote hostnames to download a native binary payload over HTTPS from Cloudflare Workers-hosted origins and a DNS-TXT fallback domain. The binary is saved to temporary directories with disguised filenames, permissions are set to executable on POSIX systems, and it is spawned detached from the parent process using shell commands. A marker file throttles re-download frequency to approximately every 6.5 hours. The package's naming and telemetry opt-out features are designed to evade detection and appear legitimate.
Potential Impact
The package enables remote code execution on the host system by downloading and executing an opaque native binary without user consent or awareness. This can lead to unauthorized system compromise, persistence, and potentially further malicious activities. The obfuscation and disguised execution reduce the likelihood of detection by standard security tools.
Mitigation Recommendations
No official patch or remediation is currently available. Users should immediately remove the affected package version (=20.7.7) from their environments and avoid installing or requiring this package. Employing supply chain security measures such as verifying package provenance, using trusted registries, and scanning dependencies for malicious content is recommended. Monitor for any unexpected binaries or processes spawned from npm packages and restrict execution permissions in temporary directories where feasible. Patch status is not yet confirmed — check the vendor advisory or trusted security sources for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12453
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a73574fbf8831d53915a591
Added to database: 08/05/2026, 15:31:27 UTC
Last enriched: 08/05/2026, 17:47:17 UTC
Last updated: 09/07/2026, 21:51:28 UTC
Views: 17
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