Detection rules › Sigma
Potentially Suspicious Inline JavaScript Execution via NodeJS Binary
Detects potentially suspicious inline JavaScript execution using Node.js with specific keywords in the command line.
Known false positives
- Legitimate scripts using Node.js with these modules
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Potentially Suspicious Inline JavaScript Execution via NodeJS Binary
id: 8537c866-072e-460d-bfff-aaf39cbd73d3
status: experimental
description: Detects potentially suspicious inline JavaScript execution using Node.js with specific keywords in the command line.
references:
- https://www.microsoft.com/en-us/security/blog/2025/04/15/threat-actors-misuse-node-js-to-deliver-malware-and-other-malicious-payloads/
author: Microsoft (idea), Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-04-21
tags:
- attack.execution
- attack.t1059.007
logsource:
category: process_creation
product: windows
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_*
falsepositives:
- Legitimate scripts using Node.js with these modules
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- Image|endswith: '\node.exe'
- OriginalFileName: 'node.exe'
- Product: 'Node.js'
Stage 2: selection_cmd
selection_cmd:
CommandLine|contains|all:
- 'http'
- 'execSync'
- 'spawn'
- 'fs'
- 'path'
- 'zlib'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with value:"\node.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"node.exe" |
Product | eq |
| field:"Product" kind:eq value:"Node.js" |