PowerShell Profile Modification

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About the rule

Rule Type

Standard

Rule Description

Detects the creation or modification of a powershell profile which could indicate suspicious activity as the profile can be used as a mean of persistence

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND FILENAME endswith "\Microsoft.PowerShell_profile.ps1,\PowerShell\profile.ps1,\Program Files\PowerShell\7-preview\profile.ps1,\Program Files\PowerShell\7\profile.ps1,\Windows\System32\WindowsPowerShell\v1.0\profile.ps1,\WindowsPowerShell\profile.ps1" OR OBJECTNAME endswith "\Microsoft.PowerShell_profile.ps1,\PowerShell\profile.ps1,\Program Files\PowerShell\7-preview\profile.ps1,\Program Files\PowerShell\7\profile.ps1,\Windows\System32\WindowsPowerShell\v1.0\profile.ps1,\WindowsPowerShell\profile.ps1" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

HieuTT35, Nasreddine Bencherchali (Nextron Systems)