Detectionmediumtest

Potentially Suspicious Execution Of PDQDeployRunner

Detects suspicious execution of "PDQDeployRunner" which is part of the PDQDeploy service stack that is responsible for executing commands and packages on a remote machines

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Launch

Nasreddine Bencherchali (Nextron Systems)Created Fri Jul 22Updated Thu May 0212b8e9f5-96b2-41e1-9a42-8c6779a5c184windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection_parent:
        ParentImage|contains: '\PDQDeployRunner-'
    selection_child:
        # Improve this section by adding other suspicious processes, commandlines or paths
        - Image|endswith:
              # If you use any of the following processes legitimately comment them out
              - '\bash.exe'
              - '\certutil.exe'
              - '\cmd.exe'
              - '\csc.exe'
              - '\cscript.exe'
              - '\dllhost.exe'
              - '\mshta.exe'
              - '\msiexec.exe'
              - '\regsvr32.exe'
              - '\rundll32.exe'
              - '\scriptrunner.exe'
              - '\wmic.exe'
              - '\wscript.exe'
              - '\wsl.exe'
        - Image|contains:
              - ':\ProgramData\'
              - ':\Users\Public\'
              - ':\Windows\TEMP\'
              - '\AppData\Local\Temp'
        - CommandLine|contains:
              - ' -decode '
              - ' -enc '
              - ' -encodedcommand '
              - ' -w hidden'
              - 'DownloadString'
              - 'FromBase64String'
              - 'http'
              - 'iex '
              - 'Invoke-'
    condition: all of selection_*