Query: rule covering Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application
Matching passage: Sigma rule: Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application. Logsource: windows / registry_set. Rule: title: Potential Persistence Via Shim Database Modification id: dfb5b4e8-91d0-4291-b40a-e3b0d3942c45 status: test description: 'Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application shims. The Microsoft Windows Application Compatibility Infrastructure/Framework (Application Shim) was created to allow for backward compatibility of software as the operating system codebase changes over time ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.011/T1546.011.md#atomic-test-3---registry-key-creation-andor-modification-events-for-sdb - https://www.fireeye.com/blog/threat-research/2017/05/fin7-shim-databases-persistence.html - https://andreafortuna.org/2018/11/12/process-injection-and-persistence-using-application-shimming/ author: frack113 date: 2021-12-30 modified: 2025-10-22 tags: - attack.privilege-escalation - attack.persistence - attack.t1546.011 logsource: category: registry_set product: windows detection: selection: TargetObject|contains: - \SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\InstalledSDB\ - \SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\ filter_main_empty_string: Details: '' filter_main_empty_value: Details: (Empty) filter_main_null: Details: null condition: selection and not 1 of filter_main_* falsepositives: - Legitimate custom SHIM installations will also trigger this rule level: medium
Near-miss passage: Sigma rule: Detects PowerShell writing startup shortcuts. This procedure was highlighted in Red Canary Intel Insights Oct. 2021, "We. Logsource: windows / file_event. Rule: title: Potential Startup Shortcut Persistence Via PowerShell.EXE id: 92fa78e7-4d39-45f1-91a3-8b23f3f1088d status: test description: 'Detects PowerShell writing startup shortcuts. This procedure was highlighted in Red Canary Intel Insights Oct. 2021, "We frequently observe adversaries using PowerShell to write malicious .lnk files into the startup directory to establish persistence. Accordingly, this detection opportunity is likely to identify persistence mechanisms in multiple threats. In the context of Yellow Cockatoo, this persistence mechanism eventually launches the command-line script that leads to the installation of a malicious DLL" ' references: - https://redcanary.com/blog/intelligence-insights-october-2021/ - https://github.com/redcanaryco/atomic-red-team/blob/36d49de4c8b00bf36054294b4a1fcbab3917d7c5/atomics/T1547.001/T1547.001.md#atomic-test-7---add-executable-shortcut-link-to-user-startup-folder author: Christopher Peacock '@securepeacock', SCYTHE date: 2021-10-24 modified: 2023-02-23 tags: - attack.privilege-escalation - attack.persistence - attack.t1547.001 logsource: product: windows category: file_event detection: selection: Image|endswith: - \powershell.exe - \pwsh.exe TargetFilename|contains: \start menu\programs\startup\ TargetFilename|endswith: .lnk condition: selection falsepositives: - Depending on your environment accepted applications may leverage this at times. It is recommended to search for anomalies inidicative of malware. level: high