LWA-2026-7444 MAL-2026-12342 ↗ confirmed malware

boxy-fixture-allure@20.8.1

Malicious code in boxy-fixture-allure (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1573 · Encrypted ChannelT1041 · Exfiltration Over C2 Channel

Analysis

On require(), the package downloads a binary payload from one of four Cloudflare Workers C2 hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) via HTTPS GET to /pkg/package (or platform-specific paths /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If HTTPS fails, it falls back to DNS TXT-record-based payload retrieval from subdomains of well1[.]site (tin[.]dl[.]well1[.]site, tina[.]dl[.]well1[.]site, ldr[.]dl[.]well1[.]site, win[.]dl[.]well1[.]site). The downloaded binary is written to /var/tmp/.cache_<random-hex> (Linux/macOS) or C:\Windows\Temp\dotnet_diag_<random-hex>.exe (Windows) and executed as a detached background process.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 03:17 PM
analyzed
Aug 2, 2026, 03:19 PM

Related advisories

browse all confirmed advisories →

Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.