Malicious code in dolyame-ui-tablemobile (npm)
The npm package dolyame-ui-tablemobile contains malicious code that executes arbitrary native payloads fetched from attacker-controlled Cloudflare Workers hosts on require(). The payload is obfuscated via string-splitting, DNS-TXT fallback, and evasion techniques, and runs with the privileges of the consuming process.
- Disclosed
- Last updated
- Blast radius
- Any npm consumer of dolyame-ui-tablemobile; payload execution on require() affects all downstream users.
- Ecosystems
- Attack vectors
- Affected entities
- dolyame-ui-tablemobilenpm package containing malicious code in index.js and lib/telemetry.js
The npm package dolyame-ui-tablemobile was found to contain malicious code in its index.js and lib/telemetry.js files. Upon require(), the package loads bootstrap.js, which selects a platform-specific payload path and fetches executable bytes from one of three attacker-controlled Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev). The hostnames are reconstructed at runtime via string-splitting to evade static analysis.\n\nThe downloaded payload is written to temporary directories (/var/tmp/.cache on POSIX or %TEMP%\dotnet_diag_.exe on Windows), made executable (chmod 0755), and spawned detached via /bin/sh or cmd. A secondary execution path exists in lib/telemetry.js, which mirrors the same base64-decode → temp-write → chmod → spawn chain, framed as an 'analytics extension' to disguise its true purpose.\n\nAdditional evasion techniques include obfuscated require() calls (require("child_"+"process")), filesystem operations (fs["chmod"+"Sync"]), and hostname lookups (os"host"+"name"). The delivered payload is opaque native code unrelated to any documented UI table component functionality. The package was identified by the OpenSSF malicious-packages project.
Indicators of compromise
- Domains
- oob-worker.cf99-9b3.workers.dev
- oob-worker.cf100-416.workers.dev
- oob-worker.cf102-baf.workers.dev
- dl.wel1.ru
Remediation
- Immediately remove dolyame-ui-tablemobile from all projects and dependencies.
- Audit npm package.json and lock files for any presence of dolyame-ui-tablemobile.
- If the package was installed, assume the system may be compromised; review process execution logs and network connections for outbound requests to the identified Cloudflare Workers and dl.wel1.ru domains.
- Regenerate any credentials or secrets that may have been exposed on affected systems.
- Update to a clean, verified version of any UI table component library if needed.
- Monitor for suspicious child processes spawned from Node.js or npm install operations.
Sources
- GitHub Advisory GHSA-5x2p-c62p-xg8q · GitHub Advisory Database
Cite this entry
"Malicious code in dolyame-ui-tablemobile (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 7, 2026; last updated August 7, 2026. https://supplychainattack.org/incident/malicious-code-in-dolyame-ui-tablemobile-npm-7t6zof
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