Import PowerShell Modules From Suspicious Directories

Title: Import PowerShell Modules From Suspicious Directories
Status: test
Description:Detects powershell scripts that import modules from suspicious directories
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2022-07-07
modified:2023-01-10
Tags:

• -'attack.execution'
• -'attack.t1059.001'

Logsource:

• product: windows
• category: ps_script
• definition: Requirements: Script Block Logging must be enabled

Detection:
  selection:
    ScriptBlockText|contains:
      -'Import-Module "$Env:Temp\'
      -'Import-Module '$Env:Temp\'
      -'Import-Module $Env:Temp\'
      -'Import-Module "$Env:Appdata\'
      -'Import-Module '$Env:Appdata\'
      -'Import-Module $Env:Appdata\'
      -'Import-Module C:\Users\Public\'
      -'ipmo "$Env:Temp\'
      -'ipmo '$Env:Temp\'
      -'ipmo $Env:Temp\'
      -'ipmo "$Env:Appdata\'
      -'ipmo '$Env:Appdata\'
      -'ipmo $Env:Appdata\'
      -'ipmo C:\Users\Public\'

  condition:selection
Falsepositives:
  -Unknown
Level: medium