title: PsExec Tool Execution author: Thomas Patzke date: 2017/06/12 description: Detects PsExec service installation and execution events (service and Sysmon) detection: SELECTION_1: EventID: 17 SELECTION_2: EventID: 18 SELECTION_3: PipeName: \PSEXESVC condition: ((SELECTION_1 or SELECTION_2) and SELECTION_3) falsepositives: - unknown fields: - EventID - CommandLine - ParentCommandLine - ServiceName - ServiceFileName - TargetFilename - PipeName id: f3f3a972-f982-40ad-b63c-bca6afdfad7c level: low logsource: category: pipe_created definition: Note that you have to configure logging for Named Pipe Events in Sysmon config (Event ID 17 and Event ID 18). The basic configuration is in popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular. How to test detection? You can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575 product: windows modified: 2021/09/21 references: - https://www.jpcert.or.jp/english/pub/sr/ir_research.html - https://jpcertcc.github.io/ToolAnalysisResultSheet related: - id: 42c575ea-e41e-41f1-b248-8093c3e82a28 type: derived status: experimental tags: - attack.execution - attack.t1035 - attack.t1569.002 - attack.s0029 yml_filename: pipe_created_tool_psexec.yml yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/pipe_created