🛡️ MAL-2026-12231 — tinkoff-boxy-form-desktop-sme-registrati

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

Description

Malicious code in tinkoff-boxy-form-desktop-sme-registration-ooo (npm)

Source: amazon-inspector

Package name typosquats Tinkoff's official SME registration form. On require() of the package, index.js loads _ext.js, which reconstructs attacker-controlled hostnames from string fragments (e.g. 'oob-worker.cf101-adf.workers.dev' and 'tin.dl.well1.site'), fetches a platform-specific binary over HTTPS, and falls back to reconstructing the payload from base64 chunks served in DNS TXT records under *.dl.well1.site when HTTPS is unavailable. The fetched bytes are written to /tmp or %TEMP% under disguised filenames (dotnet_diag_<rand>.exe,.cache_<rand>, loader_mac), marked executable with chmod 0755 on Unix, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &']) on Unix or cp.spawn('cmd.exe', ['/c', 'start', '/b', fp]) on Windows. The dropper is unrelated to the package's advertised purpose as a form/SDK.

Affected software

MAL-2026-12231 is recorded against 1 package.

  • tinkoff-boxy-form-desktop-sme-registration-ooo

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
tinkoff-boxy-form-desktop-sme-registration-ooo — —

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