[XORIndex Loader](https://attack.mitre.org/software/S1248) is a XOR-encoded loader that collects host data, decodes follow-on scripts and acts as a downloader for the [BeaverTail](https://attack.mitre.org/software/S1246) malware. [XORIndex Loader](https://attack.mitre.org/software/S1248) was first reported in June 2025. [XORIndex Loader](https://attack.mitre.org/software/S1248) has been leveraged by North Korea-affiliated threat actors identified as [Contagious Interview](https://attack.mitre.org/groups/G1052). [XORIndex Loader](https://attack.mitre.org/software/S1248) has been delivered to victims through code repository sites utilizing typo squatting naming conventions of various npm packages.(Citation: Socket BeaverTail XORIndex HexEval Contagious Interview July 2025)