Sigma rule: Potentially Suspicious Inline JavaScript Execution via NodeJS Binary

Rule

Title

Potentially Suspicious Inline JavaScript Execution via NodeJS Binary

Status

experimental

Level

medium

Author

Microsoft (idea), Swachchhanda Shrawan Poudel (Nextron Systems)

Date

2025-04-21

File

rules/windows/process_creation/proc_creation_win_susp_inline_node_js_execution.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potentially suspicious inline JavaScript execution using Node.js with specific keywords in the command line.

Log source

product

windows

category

process_creation

Detection

selection_img:
    - Image|endswith: '\node.exe'
    - OriginalFileName: 'node.exe'
    - Product: 'Node.js'
selection_cmd:
    CommandLine|contains|all:
        - 'http'
        - 'execSync'
        - 'spawn'
        - 'fs'
        - 'path'
        - 'zlib'
condition: all of selection_*

False positives (as the rule lists them)

• Legitimate scripts using Node.js with these modules

Tags

• attack.execution
• attack.t1059.007

MITRE ATT&CK ids this rule names

• T1059.007

References

• https://www.microsoft.com/en-us/security/blog/2025/04/15/threat-actors-misuse-node-js-to-deliver-malware-and-other-malicious-payloads/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_susp_inline_node_js_execution.yml