Detection rules › Sigma
Suspicious Interactive PowerShell as SYSTEM
Detects the creation of files that indicator an interactive use of PowerShell in the SYSTEM user context
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059.001 Command and Scripting Interpreter: PowerShell |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 11 | FileCreate |
Rule body yaml
title: Suspicious Interactive PowerShell as SYSTEM
id: 5b40a734-99b6-4b98-a1d0-1cea51a08ab2
status: test
description: Detects the creation of files that indicator an interactive use of PowerShell in the SYSTEM user context
references:
- https://jpcertcc.github.io/ToolAnalysisResultSheet/details/PowerSploit_Invoke-Mimikatz.htm
author: Florian Roth (Nextron Systems)
date: 2021-12-07
modified: 2022-08-13
tags:
- attack.execution
- attack.t1059.001
logsource:
product: windows
category: file_event
detection:
selection:
TargetFilename:
- 'C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt'
- 'C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive'
condition: selection
falsepositives:
- Administrative activity
- PowerShell scripts running as SYSTEM user
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetFilename:
- 'C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt'
- 'C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive'
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 |
|---|---|---|
TargetFilename | eq |
|