Malicious code in dolyame-ui-checkbox (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (2a445ffd0f222f7d58ad870ad641f9dd2fb21a1cc43795cbef5c58109cafebbe) On require of the package, index.js loads _vendor.js, which reconstructs a set of C2 hostnames from string-split fragments (four *.workers.dev mirrors and a *.dl.wel1.ru DNS-TXT fallback), selects a per-platform endpoint, downloads an attacker-controlled binary via https.get (or reassembles it from chunked base64 DNS TXT records at c.<domain>/<i>.<domain> when HTTPS is blocked), writes it to /var/tmp on Unix or %TEMP% on Windows under cover-story names such as.cache_<hex> or dotnet_diag_<hex>.exe, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A second, functionally equivalent dropper is packaged as lib/telemetry.js (81 KB), disguised as an analytics SDK, implementing the same fetch->chmod 755->spawn('/bin/sh','-c', path+' &') pattern with a base64-decoded payload path. Host reconstruction via string-splitting and the DNS-TXT covert transport are anti-analysis features paired with the dropper.
Malicious code in dolyame-ui-checkbox (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (2a445ffd0f222f7d58ad870ad641f9dd2fb21a1cc43795cbef5c58109cafebbe) On require of the package, index.js loads _vendor.js, which reconstructs a set of C2 hostnames from string-split fragments (four *.workers.dev mirrors and a *.dl.wel1.ru DNS-TXT fallback), selects a per-platform endpoint, downloads an attacker-controlled binary via https.get (or reassembles it from chunked base64 DNS TXT records at c.<domain>/<i>.<domain> when HTTPS is blocked), writes it to /var/tmp on Unix or %TEMP% on Windows under cover-story names such as.cache_<hex> or dotnet_diag_<hex>.exe, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A second, functionally equivalent dropper is packaged as lib/telemetry.js (81 KB), disguised as an analytics SDK, implementing the same fetch->chmod 755->spawn('/bin/sh','-c', path+' &') pattern with a base64-decoded payload path. Host reconstruction via string-splitting and the DNS-TXT covert transport are anti-analysis features paired with the dropper.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-13144
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a738533bf8831d5394f0979
Added to database: 08/05/2026, 18:47:15 UTC
Last updated: 08/05/2026, 18:47:15 UTC
Views: 1
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