Emerging Threathighexperimental

Axios NPM Compromise File Creation Indicators - Windows

Detects file creation events linked to the Axios NPM supply chain compromise. Axios is a popular JavaScript HTTP client. On March 30, 2026, malicious versions (1.14.1, 0.30.4) were published to npm, injecting a dependency (plain-crypto-js@4.2.1) that executed a postinstall script as a cross-platform RAT dropper. The dropper contacted a C2 server, delivered platform-specific payloads, deleted itself, and replaced package.json to evade detection. The attack used cscript.exe (VBScript), curl.exe (C2), and PowerShell masquerading as Windows Terminal.

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Launch

Swachchhanda Shrawan Poudel (Nextron Systems)Created Wed Apr 01cd6386fa-bb9a-4b67-b006-786b6ab5d2ba2026

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

WindowsFile Event

ProductWindows← raw: windows

CategoryFile Event← raw: file_event

Events for file system activity including creation, modification, and deletion.

Detection Logic

detection:
    selection_img:
        Image|endswith:
            - '\node.exe'
            - '\powershell.exe'
    selection_fils:
        - TargetFilename:
              - 'C:\ProgramData\wt.exe'
              - 'C:\ProgramData\system.bat'
        - TargetFilename|contains|all:
              - 'C:\Users\'
              - '\AppData\Local\Temp\6202033.vbs'
        - TargetFilename|contains|all:
              - 'C:\Users\'
              - '\AppData\Local\Temp\6202033.ps1'
    condition: all of selection_*