{"answers":{"affected":"1 open source package ship an affected version, including boxy-adapter-tramvai.","exploited":"There is no known exploitation of MAL-2026-13028 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-13028 is a malicious package in boxy-adapter-tramvai, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-13028 is a malicious package: boxy-adapter-tramvai (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-13028/ (Markdown: https://insights.sbomify.com/MAL-2026-13028/index.md)","id":"MAL-2026-13028","markdown":"https://insights.sbomify.com/MAL-2026-13028/index.md","name":"MAL-2026-13028","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On library load, index.js requires./_runtime.js, which selects a platform-specific staging path, fetches an opaque binary from obfuscated Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT base64 fallback under *.dl.wel1.ru (sdk/ext/pkg/net subdomains), writes the bytes to /var/tmp/.cache_\u003chex\u003e or %TEMP%\\dotnet_diag_\u003chex\u003e.exe, chmods 0755, and detached-spawns via /bin/sh -c or cmd. Hostnames are reconstructed at runtime via Array.join fragments to evade static analysis; a cache marker file at /tmp/.analytics_state gates re-execution, and env vars named DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK are used as a telemetry cover story. The DNS-TXT channel reads a chunk count from c.\u003cdomain\u003e then reassembles base64 fragments from 0.\u003cdomain\u003e..N.\u003cdomain\u003e into an executable buffer, providing a firewall-evading secondary delivery path. Payload bytes are unpinned, unverified, and staged under filenames impersonating OS diagnostic tools. The name mimics the legitimate @tramvai ecosystem.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in boxy-adapter-tramvai (npm)","id":"MAL-2026-13028","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":[],"last_affected":[],"package":"boxy-adapter-tramvai","purl":"pkg:npm/boxy-adapter-tramvai","source":"MAL-2026-13028"}],"products":null,"published":"2026-08-05","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-13028/"}