Malicious code in csc-csc-core (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0339e6587ac1d675e493fc3edc1e7d325982284f794a681327053e1131ce689c) On require of csc-csc-core, index.js loads _init.js which downloads a platform-specific binary from string-split obfuscated Cloudflare Workers hostnames (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT chunked fallback via *.dl.wel1.ru subdomains, writes it to /var/tmp or %TEMP% under a disguised name (e.g..cache_<hex>, dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via cp.spawn('/bin/sh',['-c', fp+' &'],{detached:true}).unref(). C2 hostnames and resolver domains are assembled at runtime from arrays of fragments to defeat static scanners. A /tmp cooldown marker and DO_NOT_TRACK opt-out are used to evade sandboxes. The README advertises the package as a 'base framework module' with no such behavior.
Malicious code in csc-csc-core (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0339e6587ac1d675e493fc3edc1e7d325982284f794a681327053e1131ce689c) On require of csc-csc-core, index.js loads _init.js which downloads a platform-specific binary from string-split obfuscated Cloudflare Workers hostnames (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT chunked fallback via *.dl.wel1.ru subdomains, writes it to /var/tmp or %TEMP% under a disguised name (e.g..cache_<hex>, dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via cp.spawn('/bin/sh',['-c', fp+' &'],{detached:true}).unref(). C2 hostnames and resolver domains are assembled at runtime from arrays of fragments to defeat static scanners. A /tmp cooldown marker and DO_NOT_TRACK opt-out are used to evade sandboxes. The README advertises the package as a 'base framework module' with no such behavior.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12667
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735735bf8831d53914217e
Added to database: 08/05/2026, 15:31:01 UTC
Last updated: 08/05/2026, 15:39:18 UTC
Views: 1
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