calculator-preinstall-chain-demo

{"schema_version":"1.7.4","id":"MAL-2026-18453","published":"2026-11-01T00:39:35Z","modified":"2026-11-02T16:21:00.212646486Z","aliases":["GHSA-gmrr-hqfh-q4j3"],"summary":"Malicious code in calculator-preinstall-chain-demo (npm)","details":"calculator-preinstall-chain-demo@1.1.2 has no install script of its own but depends on exactly calculator-preinstall-hook-demo@1.1.2, so npm install runs that package's preinstall script (`node preinstall.js`). The script POSTs the machine's hostname and the OS username to the Discord webhook `https://discord.com/api/webhooks/1566215853794394162/xsqpEbSn-cc3DU2AKWdzqWnXX5hjTfV-gUePQZ4evrHGlZctMd40TKCrN42qnJd7moc1`. Both packages were published by the npm account bigdevin55 on 2026-11-01.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: ghsa-malware (75fa7ce6d7d33ed240fa7d5b89a441dc860308dfc036b9bf83bec447126fb070)\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.\n\n## Source: ossf-package-analysis (88c07c18a13b451e734355c6d2bb4ca05dc4c76209fe483b97403c968c09c0ea)\nThe OpenSSF Package Analysis project identified 'calculator-preinstall-chain-demo' @ 1.1.1 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n","affected":[{"package":{"name":"calculator-preinstall-chain-demo","ecosystem":"npm"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["1.1.2","1.1.1"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}]}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/calculator-preinstall-chain-demo"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-gmrr-hqfh-q4j3"}],"database_specific":{"iocs":{"files":[{"digests":{"sha256":"bb605d4d0ff114fe127e7ecd8473d78ae49730d4b2b627d3cb0496c9fdd1f2e6"},"note":"depends on calculator-preinstall-hook-demo 1.1.2, whose preinstall POSTs hostname and username to a Discord webhook (calculator-preinstall-chain-demo@1.1.2).","paths":["package.json"],"source":"PACKAGE_ARCHIVE"}],"urls":["https://discord.com/api/webhooks/1566215853794394162/xsqpEbSn-cc3DU2AKWdzqWnXX5hjTfV-gUePQZ4evrHGlZctMd40TKCrN42qnJd7moc1"]},"malicious-packages-origins":[{"import_time":"2026-11-02T06:26:01.369649878Z","modified_time":"2026-11-01T01:08:06Z","sha256":"88c07c18a13b451e734355c6d2bb4ca05dc4c76209fe483b97403c968c09c0ea","source":"ossf-package-analysis","versions":["1.1.1"]},{"id":"GHSA-gmrr-hqfh-q4j3","import_time":"2026-11-02T16:19:46.139348042Z","modified_time":"2026-11-02T16:14:50Z","ranges":[{"events":[{"introduced":"0"}],"type":"SEMVER"}],"sha256":"75fa7ce6d7d33ed240fa7d5b89a441dc860308dfc036b9bf83bec447126fb070","source":"ghsa-malware"}]},"credits":[{"name":"InvisiRisk, Inc.","contact":["https://www.invisirisk.com","mailto:research@invisirisk.com"],"type":"FINDER"},{"name":"OpenSSF: Package Analysis","contact":["https://github.com/ossf/package-analysis","https://openssf.slack.com/channels/package_analysis"],"type":"FINDER"}]}