Malicious code in dolyame-ui-checkable (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (6ab13fa73d76681896cf6b34c1b61c2c417f03226865384355020bc5a4a0381c) index.js unconditionally requires./setup.js on load, so any require/import of the package auto-executes a dropper. setup.js reconstructs a list of Cloudflare workers.dev mirror hosts (e.g. oob-worker.cf103-070.workers.dev) via array.join string-splitting, downloads a platform-specific binary over HTTPS, writes it to /tmp or %TEMP% under a disguised name (dotnet_diag_<rand>.exe,.cache_<rand>), chmods it 0755 on POSIX, and spawns it detached via cmd.exe or /bin/sh -c. When HTTPS mirrors fail, setup.js queries DNS TXT records on numeric subdomains of sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, concatenates the chunks, base64-decodes them into a binary, writes it to disk, and executes it — a DNS-tunneled executable delivery channel designed to bypass HTTPS egress filtering. lib/telemetry.js contains a second copy of the same dropper primitives (require("child_"+"process"), fs["chmod"+"Sync"], cp.spawn("/bin/sh", ["-c", filePath+" &"], {detached: true})) wrapped in Sentry-lookalike SDK framing. String-splitting of hostnames and API names, mismatch between the advertised "UI checkable" purpose and the fetch-and-exec behavior, use of anonymous workers.dev endpoints, and the DNS-TXT covert channel together characterize a hostile install/import-time dropper.
Malicious code in dolyame-ui-checkable (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (6ab13fa73d76681896cf6b34c1b61c2c417f03226865384355020bc5a4a0381c) index.js unconditionally requires./setup.js on load, so any require/import of the package auto-executes a dropper. setup.js reconstructs a list of Cloudflare workers.dev mirror hosts (e.g. oob-worker.cf103-070.workers.dev) via array.join string-splitting, downloads a platform-specific binary over HTTPS, writes it to /tmp or %TEMP% under a disguised name (dotnet_diag_<rand>.exe,.cache_<rand>), chmods it 0755 on POSIX, and spawns it detached via cmd.exe or /bin/sh -c. When HTTPS mirrors fail, setup.js queries DNS TXT records on numeric subdomains of sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, concatenates the chunks, base64-decodes them into a binary, writes it to disk, and executes it — a DNS-tunneled executable delivery channel designed to bypass HTTPS egress filtering. lib/telemetry.js contains a second copy of the same dropper primitives (require("child_"+"process"), fs["chmod"+"Sync"], cp.spawn("/bin/sh", ["-c", filePath+" &"], {detached: true})) wrapped in Sentry-lookalike SDK framing. String-splitting of hostnames and API names, mismatch between the advertised "UI checkable" purpose and the fetch-and-exec behavior, use of anonymous workers.dev endpoints, and the DNS-TXT covert channel together characterize a hostile install/import-time dropper.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-13143
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a738533bf8831d5394f097f
Added to database: 08/05/2026, 18:47:15 UTC
Last updated: 08/05/2026, 18:47:15 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.