Query: detect Detects suspicious PowerShell invocation command parameters in logs
Matching passage: Sigma rule: Detects suspicious PowerShell invocation command parameters. Logsource: windows / ps_module. Rule: title: Suspicious PowerShell Invocations - Specific - PowerShell Module id: 8ff28fdd-e2fa-4dfa-aeda-ef3d61c62090 related: - id: fce5f582-cc00-41e1-941a-c6fabf0fdb8c type: obsolete - id: ae7fbf8e-f3cb-49fd-8db4-5f3bed522c71 type: similar - id: 536e2947-3729-478c-9903-745aaffe60d2 type: similar status: test description: Detects suspicious PowerShell invocation command parameters references: - Internal Research - https://github.com/HackTricks-wiki/hacktricks/blob/e4c7b21b8f36c97c35b7c622732b38a189ce18f7/src/windows-hardening/windows-local-privilege-escalation/privilege-escalation-with-autorun-binaries.md author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro date: 2017-03-05 modified: 2025-02-17 tags: - attack.execution - attack.t1059.001 logsource: product: windows category: ps_module definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b detection: selection_convert_b64: ContextInfo|contains|all: - -nop - ' -w ' - hidden - ' -c ' - '[Convert]::FromBase64String' selection_iex: ContextInfo|contains|all: - ' -w ' - hidden - -noni - -nop - ' -c ' - iex - New-Object selection_enc: ContextInfo|contains|all: - ' -w ' - hidden - -ep - bypass - -Enc selection_reg: ContextInfo|contains|all: - powershell - reg - add ContextInfo|contains: - \software\microsoft\windows\currentversion\run - \software\wow6432node\microsoft\windows\currentversion\run - \software\microsoft\windows\currentversion\policies\explorer\run selection_webclient: ContextInfo|contains|all: - bypass - -noprofile - -windowstyle - hidden - new-object - system.net.webclient - .download selection_iex_webclient: ContextInfo|contains|all: - iex - New-Object - Net.WebClient - .Download filter_chocolatey: ContextInfo|contains: - (New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1 - Write-ChocolateyWarning condition: 1 of selection_* and not 1 of filter_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects when the "index" value of a scheduled task is modified from the registry Which effectively hides it from any too. Logsource: windows / registry_set. Rule: title: Hide Schedule Task Via Index Value Tamper id: 5b16df71-8615-4f7f-ac9b-6c43c0509e61 related: - id: acd74772-5f88-45c7-956b-6a7b36c294d2 type: similar - id: 526cc8bc-1cdc-48ad-8b26-f19bff969cec type: similar status: test description: 'Detects when the "index" value of a scheduled task is modified from the registry Which effectively hides it from any tooling such as "schtasks /query" (Read the referenced link for more information about the effects of this technique) ' references: - https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments author: Nasreddine Bencherchali (Nextron Systems) date: 2022-08-26 modified: 2023-08-17 tags: - attack.defense-impairment - attack.t1685 logsource: category: registry_set product: windows detection: selection: TargetObject|contains|all: - \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\ - Index Details: DWORD (0x00000000) condition: selection falsepositives: - Unlikely level: high