Query: rule covering Detect indirect command execution via Program Compatibility Assistant pcwrun.exe
Matching passage: Sigma rule: Detect indirect command execution via Program Compatibility Assistant pcwrun.exe. Logsource: windows / process_creation. Rule: title: Indirect Command Execution By Program Compatibility Wizard id: b97cd4b1-30b8-4a9d-bd72-6293928d52bc status: test description: Detect indirect command execution via Program Compatibility Assistant pcwrun.exe references: - https://twitter.com/pabraeken/status/991335019833708544 - https://lolbas-project.github.io/lolbas/Binaries/Pcwrun/ author: A. Sungurov , oscd.community date: 2020-10-12 modified: 2021-11-27 tags: - attack.stealth - attack.t1218 - attack.execution logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \pcwrun.exe condition: selection falsepositives: - Need to use extra processing with 'unique_count' / 'filter' to focus on outliers as opposed to commonly seen artifacts - Legit usage of scripts level: low
Near-miss passage: Sigma rule: Detects suspicious PowerShell invocation command parameters. Logsource: windows / ps_script. Rule: title: Suspicious PowerShell Invocations - Specific id: ae7fbf8e-f3cb-49fd-8db4-5f3bed522c71 related: - id: fce5f582-cc00-41e1-941a-c6fabf0fdb8c type: obsolete - id: 8ff28fdd-e2fa-4dfa-aeda-ef3d61c62090 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_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_convert_b64: ScriptBlockText|contains|all: - -nop - ' -w ' - hidden - ' -c ' - '[Convert]::FromBase64String' selection_iex_selection: ScriptBlockText|contains|all: - ' -w ' - hidden - -noni - -nop - ' -c ' - iex - New-Object selection_enc_selection: ScriptBlockText|contains|all: - ' -w ' - hidden - -ep - bypass - -Enc selection_reg_selection: ScriptBlockText|contains|all: - powershell - reg - add ScriptBlockText|contains: - \software\microsoft\windows\currentversion\run - \software\wow6432node\microsoft\windows\currentversion\run - \software\microsoft\windows\currentversion\policies\explorer\run selection_webclient_selection: ScriptBlockText|contains|all: - bypass - -noprofile - -windowstyle - hidden - new-object - system.net.webclient - .download selection_iex_webclient: ScriptBlockText|contains|all: - iex - New-Object - Net.WebClient - .Download filter_chocolatey: ScriptBlockText|contains: - (New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1 - (New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1') - Write-ChocolateyWarning condition: 1 of selection_* and not 1 of filter_* falsepositives: - Unknown level: high