Sigma rule: PowerShell Remote Session Creation

Rule

Title

PowerShell Remote Session Creation

Status

test

Level

medium

Author

frack113

Date

2022-01-06

Modified

2023-01-02

File

rules/windows/powershell/powershell_script/posh_ps_remote_session_creation.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Adversaries may abuse PowerShell commands and scripts for execution.
PowerShell is a powerful interactive command-line interface and scripting environment included in the Windows operating system

Log source

product

windows

category

ps_script

definition

Requirements: Script Block Logging must be enabled

Detection

selection:
    ScriptBlockText|contains|all:
        - 'New-PSSession'
        - '-ComputerName '
condition: selection

False positives (as the rule lists them)

• Legitimate administrative script

Tags

• attack.execution
• attack.t1059.001

MITRE ATT&CK ids this rule names

• T1059.001

References

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.001/T1059.001.md#atomic-test-10---powershell-invoke-downloadcradle
• https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/new-pssession?view=powershell-7.4

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/powershell/powershell_script/posh_ps_remote_session_creation.yml