PUA - PAExec Default Named Pipe

Title: PUA - PAExec Default Named Pipe
Status: test
Description:Detects PAExec default named pipe
References:
  -https://github.com/microsoft/Microsoft-365-Defender-Hunting-Queries/blob/efa17a600b43c897b4b7463cc8541daa1987eeb4/Command%20and%20Control/C2-NamedPipe.md
  -https://github.com/poweradminllc/PAExec
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2022-10-26
modified:None
Tags:

• -'attack.execution'
• -'attack.t1569.002'

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

Detection:
  selection:
    PipeName|startswith: '\PAExec'
  condition:selection
Falsepositives:
  -Unknown
Level: medium