Query: alert when Detects usage of "findstr" with the argument "385201". Which could indicate potential discovery of an installed Sysinter
Matching passage: Sigma rule: Detects usage of "findstr" with the argument "385201". Which could indicate potential discovery of an installed Sysinter. Logsource: windows / process_creation. Rule: title: Sysmon Discovery Via Default Driver Altitude Using Findstr.EXE id: 37db85d1-b089-490a-a59a-c7b6f984f480 status: test description: Detects usage of "findstr" with the argument "385201". Which could indicate potential discovery of an installed Sysinternals Sysmon service using the default driver altitude (even if the name is changed). references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md#atomic-test-5---security-software-discovery---sysmon-service author: frack113 date: 2021-12-16 modified: 2023-11-14 tags: - attack.discovery - attack.t1518.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \find.exe - \findstr.exe - OriginalFileName: - FIND.EXE - FINDSTR.EXE selection_cli: CommandLine|contains: ' 385201' condition: all of selection_* falsepositives: - Unknown level: high
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