Update July, 2022

We started QLOG as an experiment to learn more about Windows ETW. QLOG provides enriched Logging for process creation events on Windows. We have stopped development of QLOG because in the meantime free tools were published which use ETW for telemetry and do a way better job than QLOG. Curious? Have a look a Aurora Agent from Nextron.

What is Qlog

QLOG doesn’t use API hooks and it doesn’t require a driver to be installed on the target system, QLOG only uses ETW to retrieve its telemetry. Currently QLOG supports “process create” events only. QLOG runs as a Windows Services, but can also run in console mode, if you want to stream the enriched events to console directly.

How does it work

QLOG reads from ETW, enriches events and writes enriched events to Event Channel “QLOG”. It creates and uses a new event source named “QMonitor” to write to Windows Eventlog.

Development & License

QLOG is being developed by threathunters.io community and will be open sourced once it reaches production grade maturity.

Usage & install

QLOG requires .NET Framework >=4.7.2 to be installed.

To run in interactive console mode, just run

qlog.exe

To install / deinstall as Windows service, run:

#install service
qlog.exe -i 

#deinstall service
qlog.exe -u 

Example output of enriched PROCESS CREATE events

{
  "EventGuid": "630699d6-ec7b-4e93-8ff8-ebd34a4c1646",
  "StartTime": "2021-12-30T09:13:38.0867746+01:00",
  "QEventID": 100,
  "QType": "Process Create",
  "Username": "TESTPC\\TestUser",
  "UsernameSID": "S-1-5-21-2182592019-244663482-1304351222-1001",
  "Imagefilename": "NOTEPAD.EXE",
  "KernelImagefilename": "NOTEPAD.EXE",
  "OriginalFilename": "NOTEPAD.EXE",
  "Fullpath": "C:\\Program Files\\WindowsApps\\Microsoft.WindowsNotepad_10.2103.6.0_x64__8wekyb3d8bbwe\\Notepad\\Notepad.exe",
  "PID": 11272,
  "Commandline": "\"C:\\Program Files\\WindowsApps\\Microsoft.WindowsNotepad_10.2103.6.0_x64__8wekyb3d8bbwe\\Notepad\\Notepad.exe\" ",
  "Modulecount": 53,
  "TTPHash": "9A0227AC826AA2D8CBA9FCB92AD1465D2ACF8ECE1EF004EA4F36BE6939F253E5",
  "Imphash": "CA88689695B1E2B1E2A85FC73742E524",
  "sha256": "DEB5B0067E4AF84BB07FA3D84631CEE94787FB3BE7CDA11C0016992F54AB4DDA",
  "md5": "62F12AC2CE2C3E90C7D99809FF90AADA",
  "sha1": "48C2E57A9B5BB4D7277A70DD6F0BEFBDF5B23B6C",
  "ProcessIntegrityLevel": "Medium",
  "isOndisk": true,
  "isRunning": true,
  "Signed": "Not signed",
  "AuthenticodeHash": "",
  "Signatures": [],
  "isParent": false,
  "ParentProcess": {
    "EventGuid": null,
    "StartTime": "2021-12-29T12:22:13.6175162+01:00",
    "QEventID": 100,
    "QType": "Process Create",
    "Username": "TESTPC\\TestUser",
    "UsernameSID": "S-1-5-21-2182592019-244663482-1304351222-1001",
    "Imagefilename": "",
    "KernelImagefilename": "",
    "OriginalFilename": "EXPLORER.EXE",
    "Fullpath": "C:\\WINDOWS\\Explorer.EXE",
    "PID": 7008,
    "Commandline": "C:\\WINDOWS\\Explorer.EXE ",
    "Modulecount": 356,
    "TTPHash": "",
    "Imphash": "0DA09DC956F7D38FFB8EE50CCBA217BF",
    "sha256": "4C1D9F1CB41545DD46430130FC3F0E15665BD1948942B0B85410305DAA7AAA9C",
    "md5": "3F786F7D200D0530757B91C5C80BC049",
    "sha1": "FF02A95A759C1880FC580158062D43FDF3B85739",
    "ProcessIntegrityLevel": "Medium",
    "isOndisk": true,
    "isRunning": true,
    "Signed": "Signature valid",
    "AuthenticodeHash": "CD0E17F28F486759625C30A95E78BBC4BC0A3B697AF83B3E1C09267CAEEA51B3",
    "Signatures": [
      {
        "Subject": "CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US",
        "Issuer": "CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US",
        "NotBefore": "15.12.2020 22:29:13",
        "NotAfter": "02.12.2021 22:29:13",
        "DigestAlgorithmName": "SHA256",
        "Thumbprint": "F7C2F2C96A328C13CDA8CDB57B715BDEA2CBD1D9",
        "TimestampSignatures": [
          {
            "Subject": "CN=Microsoft Time-Stamp Service, OU=Thales TSS ESN:462F-E319-3F20, OU=Microsoft Operations Puerto Rico, O=Microsoft Corporation, L=Redmond, S=Washington, C=US",
            "Issuer": "CN=Microsoft Time-Stamp PCA 2010, O=Microsoft Corporation, L=Redmond, S=Washington, C=US",
            "NotBefore": "14.01.2021 20:02:14",
            "NotAfter": "11.04.2022 21:02:14",
            "DigestAlgorithmName": "SHA256",
            "Thumbprint": "A9C92B731AE7D10B21A6EA338E9FA5F8349F34BF",
            "Timestamp": "29.07.2021 11:39:24 +02:00"
          }
        ]
      }
    ],
    "isParent": false,
    "ParentProcess": null
  }
}