{"answers":{"affected":"1 open source package ship an affected version, including tramvai-tinkoff-module-legacy-popup.","exploited":"There is no known exploitation of MAL-2026-12052 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-2026-12052 is a malicious package in tramvai-tinkoff-module-legacy-popup, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12052 is a malicious package: tramvai-tinkoff-module-legacy-popup (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-2026-12052/ (Markdown: https://insights.sbomify.com/MAL-2026-12052/index.md)","id":"MAL-2026-12052","markdown":"https://insights.sbomify.com/MAL-2026-12052/index.md","name":"MAL-2026-12052","record":{"aliases":["GHSA-x6vc-4q97-5qw4"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require() of tramvai-tinkoff-module-legacy-popup, index.js loads setup.js, which selects a platform-specific payload from a hardcoded binary map, fetches it over HTTPS from Cloudflare Workers hosts whose names are assembled via array-join string concatenation (oob-worker.cf101-adf.workers.dev, cf103-070.workers.dev, cf99-9b3.workers.dev), writes the response to a temp directory under masquerading names (e.g. dotnet_diag_*.exe,.cache_*), chmods it 0o755, and spawns it detached via /bin/sh or cmd. setup.js also implements a DNS-TXT covert-channel fallback: it reads a chunk count from a TXT record at c.\u003cdomain\u003e and reassembles N base64 TXT chunks from 0.\u003cdomain\u003e, 1.\u003cdomain\u003e,... under tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site before executing the reconstructed binary. index.js itself exports only a stub class with no functionality matching the advertised 'tramvai tinkoff module' purpose; lib/telemetry.js contains a parallel unused dropper helper (cp.spawn(/bin/sh), fs.chmodSync 0o755). The package name impersonates the tramvai/tinkoff Russian-language OSS ecosystem.\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.","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 tramvai-tinkoff-module-legacy-popup (npm)","id":"MAL-2026-12052","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":["0"],"last_affected":[],"package":"tramvai-tinkoff-module-legacy-popup","purl":"pkg:npm/tramvai-tinkoff-module-legacy-popup","source":"MAL-2026-12052"}],"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-2026-12052/"}