MITRE ATT&CKsoftware (malware)
S1249 HexEval Loader
- Domain
- enterprise
- Platforms
- Linux, macOS, Windows
- Version
- 1.0
- Created
- 2025-10-22
Description
HexEval Loader is a hex-encoded loader that collects host data, decodes follow-on scripts and acts as a downloader for the BeaverTail malware. HexEval Loader was first reported in April 2025. HexEval Loader has previously been leveraged by North Korea-affiliated threat actors identified as Contagious Interview. HexEval Loader has been delivered to victims through code repository sites utilizing typosquatting naming conventions of various npm packages.
Related
Uses · MITRE ATT&CK (12)
- T1027.013 Encrypted/Encoded File sub-technique
- T1614 System Location Discovery technique
- T1059.007 JavaScript sub-technique
- T1071.001 Web Protocols sub-technique
- T1056.001 Keylogging sub-technique
- T1036.005 Match Legitimate Resource Name or Location sub-technique
- T1140 Deobfuscate/Decode Files or Information technique
- T1016 System Network Configuration Discovery technique
- T1033 System Owner/User Discovery technique
- T1041 Exfiltration Over C2 Channel technique
- T1082 System Information Discovery technique
- T1105 Ingress Tool Transfer technique
Referenced by MITRE ATT&CK · uses (1)
- G1052 Contagious Interview group
References
- https://socket.dev/blog/lazarus-expands-malicious-npm-campaign-11-new-packages-add-malware-loaders-and-bitbucket Socket Contagious Interview NPM April 2025
- https://socket.dev/blog/contagious-interview-campaign-escalates-67-malicious-npm-packages Socket BeaverTail XORIndex HexEval Contagious Interview July 2025
- https://socket.dev/blog/north-korean-contagious-interview-campaign-drops-35-new-malicious-npm-packages Socket HexEval BeaverTail Contagious Interview June 2025