🛡️ MAL-2026-13276 — dippy-invertor

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in dippy-invertor (npm)

Source: amazon-inspector

On require('dippy-invertor'), index.js unconditionally loads _ext.js, which downloads an OS-specific executable from four hardcoded Cloudflare Workers hosts (oob-worker.cf10*.workers.dev family) and, on HTTPS failure, falls back to a DNS-TXT covert channel against sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru (queries TXT at c.<domain> for a chunk count, iterates 0.<domain>..N.<domain>, base64-decodes the concatenation). The retrieved payload is written to /tmp or %TEMP% under a disguised name (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached and unref'd via /bin/sh -c or cmd. Hostnames and the child_process / chmodSync API names are split-concatenated ([...].join('')) to evade string scanning, and cover-story identifiers (analytics_state, DISABLE_TELEMETRY, dotnet_diag_*.exe) disguise the loader. The package has no legitimate advertised behavior that requires fetching and executing an opaque remote binary at load time.

Affected software

MAL-2026-13276 is recorded against 1 package.

  • dippy-invertor

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
dippy-invertor — —

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