Query: write Sigma for Detects attempts to disable the Windows Firewall using PowerShell
Matching passage: Sigma rule: Detects attempts to disable the Windows Firewall using PowerShell. Logsource: windows / process_creation. Rule: title: Windows Firewall Disabled via PowerShell id: 12f6b752-042d-483e-bf9c-915a6d06ad75 related: - id: 488b44e7-3781-4a71-888d-c95abfacf44d type: similar status: test description: Detects attempts to disable the Windows Firewall using PowerShell references: - https://www.elastic.co/guide/en/security/current/windows-firewall-disabled-via-powershell.html author: Tim Rauch, Elastic (idea) date: 2022-09-14 modified: 2023-02-13 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_name: - Image|endswith: - \powershell.exe - \pwsh.exe - \powershell_ise.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_args: CommandLine|contains|all: - 'Set-NetFirewallProfile ' - ' -Enabled ' - ' False' selection_opt: CommandLine|contains: - ' -All ' - Public - Domain - Private condition: all of selection_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects base64 encoded strings used in hidden malicious PowerShell command lines. Logsource: windows / process_creation. Rule: title: Malicious Base64 Encoded PowerShell Keywords in Command Lines id: f26c6093-6f14-4b12-800f-0fcb46f5ffd0 status: test description: Detects base64 encoded strings used in hidden malicious PowerShell command lines references: - http://www.leeholmes.com/blog/2017/09/21/searching-for-content-in-base-64-strings/ author: John Lambert (rule) date: 2019-01-16 modified: 2023-01-05 tags: - attack.execution - attack.t1059.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_hidden: CommandLine|contains: ' hidden ' selection_encoded: CommandLine|contains: - AGkAdABzAGEAZABtAGkAbgAgAC8AdAByAGEAbgBzAGYAZQByA - aXRzYWRtaW4gL3RyYW5zZmVy - IAaQB0AHMAYQBkAG0AaQBuACAALwB0AHIAYQBuAHMAZgBlAHIA - JpdHNhZG1pbiAvdHJhbnNmZX - YgBpAHQAcwBhAGQAbQBpAG4AIAAvAHQAcgBhAG4AcwBmAGUAcg - Yml0c2FkbWluIC90cmFuc2Zlc - AGMAaAB1AG4AawBfAHMAaQB6AGUA - JABjAGgAdQBuAGsAXwBzAGkAegBlA - JGNodW5rX3Npem - QAYwBoAHUAbgBrAF8AcwBpAHoAZQ - RjaHVua19zaXpl - Y2h1bmtfc2l6Z - AE8ALgBDAG8AbQBwAHIAZQBzAHMAaQBvAG4A - kATwAuAEMAbwBtAHAAcgBlAHMAcwBpAG8Abg - lPLkNvbXByZXNzaW9u - SQBPAC4AQwBvAG0AcAByAGUAcwBzAGkAbwBuA - SU8uQ29tcHJlc3Npb2 - Ty5Db21wcmVzc2lvb - AE8ALgBNAGUAbQBvAHIAeQBTAHQAcgBlAGEAbQ - kATwAuAE0AZQBtAG8AcgB5AFMAdAByAGUAYQBtA - lPLk1lbW9yeVN0cmVhb - SQBPAC4ATQBlAG0AbwByAHkAUwB0AHIAZQBhAG0A - SU8uTWVtb3J5U3RyZWFt - Ty5NZW1vcnlTdHJlYW - 4ARwBlAHQAQwBoAHUAbgBrA - 5HZXRDaHVua - AEcAZQB0AEMAaAB1AG4Aaw - LgBHAGUAdABDAGgAdQBuAGsA - LkdldENodW5r - R2V0Q2h1bm - AEgAUgBFAEEARABfAEkATgBGAE8ANgA0A - QASABSAEUAQQBEAF8ASQBOAEYATwA2ADQA - RIUkVBRF9JTkZPNj - SFJFQURfSU5GTzY0 - VABIAFIARQBBAEQAXwBJAE4ARgBPADYANA - VEhSRUFEX0lORk82N - AHIAZQBhAHQAZQBSAGUAbQBvAHQAZQBUAGgAcgBlAGEAZA - cmVhdGVSZW1vdGVUaHJlYW - MAcgBlAGEAdABlAFIAZQBtAG8AdABlAFQAaAByAGUAYQBkA - NyZWF0ZVJlbW90ZVRocmVhZ - Q3JlYXRlUmVtb3RlVGhyZWFk - QwByAGUAYQB0AGUAUgBlAG0AbwB0AGUAVABoAHIAZQBhAGQA - 0AZQBtAG0AbwB2AGUA - 1lbW1vdm - AGUAbQBtAG8AdgBlA - bQBlAG0AbQBvAHYAZQ - bWVtbW92Z - ZW1tb3Zl condition: all of selection_* falsepositives: - Unknown level: high