Detection rules › Sigma
Automated Collection Command PowerShell
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Collection | T1119 Automated Collection |
Event coverage
| Provider | Event | Title |
|---|---|---|
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
Rule body yaml
title: Automated Collection Command PowerShell
id: c1dda054-d638-4c16-afc8-53e007f3fbc5
status: test
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md
author: frack113
date: 2021-07-28
modified: 2022-12-25
tags:
- attack.collection
- attack.t1119
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection_ext:
ScriptBlockText|contains:
- '.doc'
- '.docx'
- '.xls'
- '.xlsx'
- '.ppt'
- '.pptx'
- '.rtf'
- '.pdf'
- '.txt'
selection_cmd:
ScriptBlockText|contains|all:
- 'Get-ChildItem'
- ' -Recurse '
- ' -Include '
condition: all of selection*
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
all of selection*Stage 1: selection_ext
selection_ext:
ScriptBlockText|contains:
- '.doc'
- '.docx'
- '.xls'
- '.xlsx'
- '.ppt'
- '.pptx'
- '.rtf'
- '.pdf'
- '.txt'
Stage 2: selection_cmd
selection_cmd:
ScriptBlockText|contains|all:
- 'Get-ChildItem'
- ' -Recurse '
- ' -Include '
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
ScriptBlockText | match |
|