Title:PsExec Tool Execution From Suspicious Locations - PipeName Status:test Description:Detects PsExec default pipe creation where the image executed is located in a suspicious location. Which could indicate that the tool is being used in an attack References: -https://www.jpcert.or.jp/english/pub/sr/ir_research.html -https://jpcertcc.github.io/ToolAnalysisResultSheet Author: Nasreddine Bencherchali (Nextron Systems) Date: 2022-08-04 modified:2023-09-20 Tags:
-'attack.execution'
-'attack.t1569.002'
-'attack.s0029'
Logsource:
category: pipe_created
product: windows
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
condition:selection Falsepositives:
-Rare legitimate use of psexec from the locations mentioned above. This will require initial tuning based on your environment. Level:medium
