Hayabusa medium test sigma

Process Memory Dump Via Dotnet-Dump

Detects the execution of "dotnet-dump" with the "collect" flag. The execution could indicate potential process dumping of critical processes such as LSASS.

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Detection Logic

{
  "process_creation": {
    "EventID": 4688,
    "Channel": "Security"
  },
  "selection_img": [
    {
      "NewProcessName
| endswith": "\\dotnet-dump.exe"
    },
    {
      "OriginalFileName": "dotnet-dump.dll"
    }
  ],
  "selection_cli": {
    "CommandLine
| contains": "collect"
  },
  "condition": "process_creation and (all of selection_*)"
}

False Positives

⚠ Process dumping is the expected behavior of the tool. So false positives are expected in legitimate usage. The PID/Process Name of the process being dumped needs to be investigated

Field Validations

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