Detection rules › Sigma

Node Process Executions

Status
test
Severity
medium
Log source
category process_creation, product windows
Author
Max Altgelt (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects the execution of other scripts using the Node executable packaged with Adobe Creative Cloud

MITRE ATT&CK coverage

Telemetry coverage

Rule body

title: Node Process Executions
id: df1f26d3-bea7-4700-9ea2-ad3e990cf90e
status: test
description: Detects the execution of other scripts using the Node executable packaged with Adobe Creative Cloud
references:
    - https://twitter.com/mttaggart/status/1511804863293784064
author: Max Altgelt (Nextron Systems)
date: 2022-04-06
tags:
    - attack.execution
    - attack.stealth
    - attack.t1127
    - attack.t1059.007
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\Adobe Creative Cloud Experience\libs\node.exe'
    filter:
        CommandLine|contains: 'Adobe Creative Cloud Experience\js' # Folder where Creative Cloud's JS resources are located
    condition: selection and not filter
falsepositives:
    - Unknown
level: medium

Stages and Predicates

Stage 0: condition

selection and not filter

Stage 1: selection

selection:
    Image|endswith: '\Adobe Creative Cloud Experience\libs\node.exe'

Stage 2: not filter

filter:
    CommandLine|contains: 'Adobe Creative Cloud Experience\js'

Exclusions

The rule actively suppresses these predicates.

FieldKindExcluded valuesSearch
CommandLinematchAdobe Creative Cloud Experience\jsexcludes:CommandLine field:"CommandLine" value:"Adobe Creative Cloud Experience\js"

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Imageends_with
  • \Adobe Creative Cloud Experience\libs\node.exe
field:"Image" kind:ends_with value:"\Adobe Creative Cloud Experience\libs\node.exe"