Malicious code in claims-get-indexed-selector (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (fe924c35590524d1632020cce8e08d68b232aa0d53b0f0ecb730f3ae87e07c35) [email protected] executes a binary dropper on module load. index.js unconditionally requires _polyfill.js, which reassembles network destinations from split string arrays (hosts on cf*.workers.dev and *.dl.wel1.ru), downloads a native binary over HTTPS, writes it to /var/tmp/.cache_<hex> or TEMP\dotnet_diag_<hex>.exe with cover-story filenames, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. If HTTPS retrieval fails, a covert DNS-TXT channel is used: a chunk-count TXT record at c.<domain> and base64-encoded payload chunks at <i>.<domain> are fetched and reassembled into the executable. No hash or signature verification is performed on the fetched binary. Destination hostnames are constructed from split arrays such as ["oob-worker",".cf103-070.","workers.","de","v"].join("") to evade static string scanning. The package is presented as a benign runtime support module; the delivered binary is opaque and the destinations are attacker-controlled.
Malicious code in claims-get-indexed-selector (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (fe924c35590524d1632020cce8e08d68b232aa0d53b0f0ecb730f3ae87e07c35) [email protected] executes a binary dropper on module load. index.js unconditionally requires _polyfill.js, which reassembles network destinations from split string arrays (hosts on cf*.workers.dev and *.dl.wel1.ru), downloads a native binary over HTTPS, writes it to /var/tmp/.cache_<hex> or TEMP\dotnet_diag_<hex>.exe with cover-story filenames, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. If HTTPS retrieval fails, a covert DNS-TXT channel is used: a chunk-count TXT record at c.<domain> and base64-encoded payload chunks at <i>.<domain> are fetched and reassembled into the executable. No hash or signature verification is performed on the fetched binary. Destination hostnames are constructed from split arrays such as ["oob-worker",".cf103-070.","workers.","de","v"].join("") to evade static string scanning. The package is presented as a benign runtime support module; the delivered binary is opaque and the destinations are attacker-controlled.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12621
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735734bf8831d53913d180
Added to database: 08/05/2026, 15:31:00 UTC
Last updated: 08/05/2026, 15:39:18 UTC
Views: 1
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